./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY --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 87b189dc1f4e4e7b15d899fcbb97cc91a55d1376 .............................................................................................................................................................................................................................................. 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-4e77c04 [2021-10-13 04:35:20,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 04:35:20,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 04:35:20,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 04:35:20,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 04:35:20,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 04:35:20,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 04:35:20,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 04:35:20,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 04:35:20,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 04:35:20,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 04:35:20,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 04:35:20,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 04:35:20,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 04:35:20,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 04:35:20,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 04:35:20,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 04:35:20,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 04:35:20,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 04:35:20,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 04:35:20,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 04:35:20,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 04:35:20,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 04:35:20,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 04:35:20,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 04:35:20,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 04:35:20,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 04:35:20,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 04:35:20,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 04:35:20,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 04:35:20,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 04:35:20,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 04:35:20,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 04:35:20,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 04:35:20,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 04:35:20,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 04:35:20,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 04:35:20,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 04:35:20,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 04:35:20,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 04:35:20,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 04:35:20,285 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-10-13 04:35:20,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 04:35:20,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 04:35:20,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 04:35:20,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 04:35:20,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 04:35:20,317 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 04:35:20,317 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 04:35:20,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 04:35:20,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 04:35:20,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 04:35:20,318 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 04:35:20,318 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 04:35:20,318 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 04:35:20,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 04:35:20,319 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 04:35:20,319 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 04:35:20,319 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 04:35:20,320 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 04:35:20,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 04:35:20,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:35:20,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 04:35:20,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 04:35:20,321 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 04:35:20,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 04:35:20,321 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_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87b189dc1f4e4e7b15d899fcbb97cc91a55d1376 [2021-10-13 04:35:20,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 04:35:20,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 04:35:20,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 04:35:20,582 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 04:35:20,583 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 04:35:20,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/loops/invert_string-2.c [2021-10-13 04:35:20,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/data/fd2f6dc1c/245c98e8c0db43e18718daae0ef10508/FLAG2af79fb94 [2021-10-13 04:35:21,119 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 04:35:21,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/sv-benchmarks/c/loops/invert_string-2.c [2021-10-13 04:35:21,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/data/fd2f6dc1c/245c98e8c0db43e18718daae0ef10508/FLAG2af79fb94 [2021-10-13 04:35:21,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/data/fd2f6dc1c/245c98e8c0db43e18718daae0ef10508 [2021-10-13 04:35:21,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 04:35:21,526 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 04:35:21,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 04:35:21,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 04:35:21,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 04:35:21,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392071f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21, skipping insertion in model container [2021-10-13 04:35:21,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 04:35:21,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 04:35:21,723 WARN L228 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_4d288101-46f7-4ad7-ad85-b86b723affb4/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-10-13 04:35:21,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:35:21,761 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 04:35:21,780 WARN L228 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_4d288101-46f7-4ad7-ad85-b86b723affb4/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2021-10-13 04:35:21,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:35:21,817 INFO L208 MainTranslator]: Completed translation [2021-10-13 04:35:21,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21 WrapperNode [2021-10-13 04:35:21,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 04:35:21,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 04:35:21,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 04:35:21,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 04:35:21,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 04:35:21,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 04:35:21,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 04:35:21,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 04:35:21,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 04:35:21,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 04:35:21,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 04:35:21,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 04:35:21,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:35:21" (1/1) ... [2021-10-13 04:35:21,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:35:21,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/z3 [2021-10-13 04:35:21,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 04:35:21,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 04:35:22,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 04:35:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 04:35:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 04:35:22,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 04:35:22,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 04:35:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 04:35:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 04:35:22,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 04:35:22,354 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-13 04:35:22,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:35:22 BoogieIcfgContainer [2021-10-13 04:35:22,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 04:35:22,358 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 04:35:22,358 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 04:35:22,377 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 04:35:22,377 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:35:22" (1/1) ... [2021-10-13 04:35:22,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 04:35:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:35:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 29 states and 32 transitions. [2021-10-13 04:35:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-10-13 04:35:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 04:35:22,461 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:35:22,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:35:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:35:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:35:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:35:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2021-10-13 04:35:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-13 04:35:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 04:35:22,714 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:35:22,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:35:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:35:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:35:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:35:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2021-10-13 04:35:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-10-13 04:35:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 04:35:22,807 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:35:22,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:35:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:35:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:35:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:35:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 29 states and 34 transitions. [2021-10-13 04:35:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-10-13 04:35:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 04:35:23,166 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:35:23,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:35:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:35:23,231 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:35:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:35:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:35:23,308 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:35:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:35:23,331 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-10-13 04:35:23,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 04:35:23 ImpRootNode [2021-10-13 04:35:23,350 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 04:35:23,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 04:35:23,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 04:35:23,351 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 04:35:23,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:35:22" (3/4) ... [2021-10-13 04:35:23,353 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 04:35:23,386 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d288101-46f7-4ad7-ad85-b86b723affb4/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 04:35:23,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 04:35:23,389 INFO L168 Benchmark]: Toolchain (without parser) took 1861.68 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 63.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-13 04:35:23,389 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 88.1 MB. Free memory is still 48.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:35:23,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.14 ms. Allocated memory is still 107.0 MB. Free memory was 74.9 MB in the beginning and 84.1 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 04:35:23,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.63 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 04:35:23,392 INFO L168 Benchmark]: Boogie Preprocessor took 41.03 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:35:23,393 INFO L168 Benchmark]: RCFGBuilder took 438.03 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 66.3 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-13 04:35:23,394 INFO L168 Benchmark]: CodeCheck took 992.09 ms. Allocated memory is still 107.0 MB. Free memory was 66.3 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2021-10-13 04:35:23,394 INFO L168 Benchmark]: Witness Printer took 36.46 ms. Allocated memory is still 107.0 MB. Free memory was 64.7 MB in the beginning and 63.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 04:35:23,398 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: 916.0ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 20 SDslu, 16 SDs, 0 SdLazy, 64 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 139.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 248.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 14.0ms SsaConstructionTime, 118.2ms SatisfiabilityAnalysisTime, 204.6ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 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, 0.0ms 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 [L20] COND FALSE !(i