./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loops/invert_string-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL --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 e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 07:54:32,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 07:54:32,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 07:54:32,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 07:54:32,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 07:54:32,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 07:54:32,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 07:54:32,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 07:54:32,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 07:54:32,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 07:54:32,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 07:54:32,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 07:54:32,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 07:54:32,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 07:54:32,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 07:54:32,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 07:54:32,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 07:54:32,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 07:54:32,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 07:54:32,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 07:54:32,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 07:54:32,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 07:54:32,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 07:54:32,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 07:54:32,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 07:54:32,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 07:54:32,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 07:54:32,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 07:54:32,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 07:54:32,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 07:54:32,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 07:54:32,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 07:54:32,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 07:54:32,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 07:54:32,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 07:54:32,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 07:54:32,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 07:54:32,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 07:54:32,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 07:54:32,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 07:54:32,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 07:54:32,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-25 07:54:32,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 07:54:32,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 07:54:32,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 07:54:32,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 07:54:32,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 07:54:32,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 07:54:32,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 07:54:32,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 07:54:32,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 07:54:32,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 07:54:32,962 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-25 07:54:32,962 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-25 07:54:32,962 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-25 07:54:32,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 07:54:32,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 07:54:32,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 07:54:32,963 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-25 07:54:32,964 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-25 07:54:32,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 07:54:32,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:54:32,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 07:54:32,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 07:54:32,965 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-25 07:54:32,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 07:54:32,966 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_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 [2021-11-25 07:54:33,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 07:54:33,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 07:54:33,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 07:54:33,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 07:54:33,392 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 07:54:33,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/../../sv-benchmarks/c/loops/invert_string-2.c [2021-11-25 07:54:33,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/data/a8ab424aa/459dafa32d4a46d5ac493ae5f79b2d52/FLAG597eb0a04 [2021-11-25 07:54:34,074 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 07:54:34,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/sv-benchmarks/c/loops/invert_string-2.c [2021-11-25 07:54:34,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/data/a8ab424aa/459dafa32d4a46d5ac493ae5f79b2d52/FLAG597eb0a04 [2021-11-25 07:54:34,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/data/a8ab424aa/459dafa32d4a46d5ac493ae5f79b2d52 [2021-11-25 07:54:34,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 07:54:34,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 07:54:34,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 07:54:34,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 07:54:34,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 07:54:34,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178fcbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34, skipping insertion in model container [2021-11-25 07:54:34,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 07:54:34,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 07:54:34,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-11-25 07:54:34,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:54:34,737 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 07:54:34,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-11-25 07:54:34,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:54:34,778 INFO L208 MainTranslator]: Completed translation [2021-11-25 07:54:34,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34 WrapperNode [2021-11-25 07:54:34,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 07:54:34,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 07:54:34,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 07:54:34,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 07:54:34,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,826 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2021-11-25 07:54:34,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 07:54:34,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 07:54:34,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 07:54:34,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 07:54:34,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 07:54:34,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 07:54:34,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 07:54:34,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 07:54:34,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:54:34" (1/1) ... [2021-11-25 07:54:34,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:54:34,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/z3 [2021-11-25 07:54:34,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-25 07:54:34,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-25 07:54:35,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 07:54:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 07:54:35,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 07:54:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 07:54:35,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 07:54:35,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 07:54:35,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 07:54:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 07:54:35,130 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 07:54:35,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 07:54:35,455 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 07:54:35,541 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 07:54:35,542 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 07:54:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:35 BoogieIcfgContainer [2021-11-25 07:54:35,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 07:54:35,546 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-25 07:54:35,546 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-25 07:54:35,570 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-25 07:54:35,571 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:35" (1/1) ... [2021-11-25 07:54:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 07:54:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:54:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 29 states and 32 transitions. [2021-11-25 07:54:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-11-25 07:54:35,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 07:54:35,667 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:54:35,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:54:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:54:35,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:54:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:54:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2021-11-25 07:54:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-25 07:54:35,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 07:54:35,968 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:54:35,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:54:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:54:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:54:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:54:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2021-11-25 07:54:36,096 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-25 07:54:36,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 07:54:36,097 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:54:36,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:54:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:54:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:54:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:54:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 29 states and 35 transitions. [2021-11-25 07:54:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-25 07:54:36,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 07:54:36,497 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:54:36,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:54:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:54:36,527 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:54:36,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:54:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:54:36,646 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:54:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:54:36,682 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-11-25 07:54:36,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 07:54:36 ImpRootNode [2021-11-25 07:54:36,719 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-25 07:54:36,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 07:54:36,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 07:54:36,722 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 07:54:36,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:54:35" (3/4) ... [2021-11-25 07:54:36,729 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 07:54:36,772 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67e3076d-4521-4696-b801-cdb97c5b06a1/bin/ukojak-d1pc8ZmBRL/witness.graphml [2021-11-25 07:54:36,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 07:54:36,774 INFO L158 Benchmark]: Toolchain (without parser) took 2354.42ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 54.3MB in the beginning and 73.7MB in the end (delta: -19.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 07:54:36,775 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 90.2MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:54:36,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.92ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 54.1MB in the beginning and 95.7MB in the end (delta: -41.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-25 07:54:36,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.39ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 94.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:54:36,778 INFO L158 Benchmark]: Boogie Preprocessor took 41.46ms. Allocated memory is still 119.5MB. Free memory was 94.1MB in the beginning and 92.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:54:36,779 INFO L158 Benchmark]: RCFGBuilder took 675.61ms. Allocated memory is still 119.5MB. Free memory was 92.6MB in the beginning and 79.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 07:54:36,779 INFO L158 Benchmark]: CodeCheck took 1173.52ms. Allocated memory is still 119.5MB. Free memory was 79.5MB in the beginning and 75.8MB in the end (delta: 3.7MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-11-25 07:54:36,780 INFO L158 Benchmark]: Witness Printer took 51.33ms. Allocated memory is still 119.5MB. Free memory was 75.8MB in the beginning and 73.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:54:36,785 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, 29 locations, 14 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 6 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L15] int MAX = __VERIFIER_nondet_uint(); [L16] char str1[MAX], str2[MAX]; [L17] int cont, i, j; [L18] cont = 0 [L20] i=0 VAL [cont=0, i=0, MAX=0, str1={10116:0}, str2={10115:0}] [L20] COND FALSE !(i