./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB --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 --- [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-dbf71c6-m [2022-10-17 17:03:33,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:03:33,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:03:33,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:03:33,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:03:33,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:03:33,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:03:33,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:03:33,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:03:33,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:03:33,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:03:33,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:03:33,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:03:33,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:03:33,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:03:33,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:03:33,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:03:33,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:03:33,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:03:33,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:03:33,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:03:33,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:03:33,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:03:33,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:03:33,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:03:33,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:03:33,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:03:33,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:03:33,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:03:33,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:03:33,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:03:33,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:03:33,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:03:33,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:03:33,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:03:33,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:03:33,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:03:33,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:03:33,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:03:33,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:03:33,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:03:33,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-10-17 17:03:33,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:03:33,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:03:33,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:03:33,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:03:33,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:03:33,313 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:03:33,313 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:03:33,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:03:33,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:03:33,314 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:03:33,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 17:03:33,316 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 17:03:33,316 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 17:03:33,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:03:33,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:03:33,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:03:33,317 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 17:03:33,318 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 17:03:33,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:03:33,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:03:33,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:03:33,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:03:33,319 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 17:03:33,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:03:33,320 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_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e33cb4ee211d41e701c41ff91ce60e23f49ca2926f74469a82378a4395cc8259 [2022-10-17 17:03:33,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:03:33,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:03:33,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:03:33,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:03:33,689 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:03:33,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/loops/invert_string-2.c [2022-10-17 17:03:33,780 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/data/7429d84bd/5a7784f653534d67a86de4b427ddbedf/FLAG5bb6592b7 [2022-10-17 17:03:34,307 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:03:34,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/sv-benchmarks/c/loops/invert_string-2.c [2022-10-17 17:03:34,319 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/data/7429d84bd/5a7784f653534d67a86de4b427ddbedf/FLAG5bb6592b7 [2022-10-17 17:03:34,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/data/7429d84bd/5a7784f653534d67a86de4b427ddbedf [2022-10-17 17:03:34,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:03:34,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:03:34,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:03:34,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:03:34,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:03:34,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:03:34" (1/1) ... [2022-10-17 17:03:34,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3773220d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:34, skipping insertion in model container [2022-10-17 17:03:34,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:03:34" (1/1) ... [2022-10-17 17:03:34,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:03:34,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:03:34,961 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_7a03e36f-0fe5-4441-8872-a6e72c3c2267/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2022-10-17 17:03:34,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:03:35,002 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:03:35,018 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_7a03e36f-0fe5-4441-8872-a6e72c3c2267/sv-benchmarks/c/loops/invert_string-2.c[327,340] [2022-10-17 17:03:35,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:03:35,061 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:03:35,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35 WrapperNode [2022-10-17 17:03:35,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:03:35,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:03:35,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:03:35,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:03:35,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,097 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2022-10-17 17:03:35,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:03:35,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:03:35,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:03:35,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:03:35,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,123 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:03:35,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:03:35,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:03:35,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:03:35,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:03:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 17:03:35,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 17:03:35,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 17:03:35,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:03:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:03:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:03:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:03:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:03:35,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:03:35,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:03:35,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:03:35,277 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:03:35,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:03:35,471 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:03:35,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:03:35,532 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 17:03:35,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:03:35 BoogieIcfgContainer [2022-10-17 17:03:35,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:03:35,535 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 17:03:35,536 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 17:03:35,546 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 17:03:35,546 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:03:35" (1/1) ... [2022-10-17 17:03:35,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:03:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 29 states and 32 transitions. [2022-10-17 17:03:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-10-17 17:03:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:03:35,614 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:35,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 28 states and 31 transitions. [2022-10-17 17:03:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-10-17 17:03:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:03:36,114 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 27 states and 30 transitions. [2022-10-17 17:03:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-10-17 17:03:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:03:36,350 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:36,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:03:36,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:03:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:03:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 29 states and 34 transitions. [2022-10-17 17:03:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-10-17 17:03:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:03:36,897 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:03:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:03:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:03:36,931 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:03:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:03:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:03:37,009 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:03:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:03:37,031 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2022-10-17 17:03:37,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 05:03:37 ImpRootNode [2022-10-17 17:03:37,068 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 17:03:37,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:03:37,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:03:37,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:03:37,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:03:35" (3/4) ... [2022-10-17 17:03:37,072 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:03:37,105 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a03e36f-0fe5-4441-8872-a6e72c3c2267/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 17:03:37,105 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:03:37,107 INFO L158 Benchmark]: Toolchain (without parser) took 2388.86ms. Allocated memory is still 111.1MB. Free memory was 68.6MB in the beginning and 57.4MB in the end (delta: 11.2MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-10-17 17:03:37,110 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 111.1MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:03:37,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.89ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 86.0MB in the end (delta: -17.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 17:03:37,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.05ms. Allocated memory is still 111.1MB. Free memory was 86.0MB in the beginning and 84.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:03:37,113 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 83.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:03:37,113 INFO L158 Benchmark]: RCFGBuilder took 407.68ms. Allocated memory is still 111.1MB. Free memory was 83.0MB in the beginning and 67.6MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 17:03:37,114 INFO L158 Benchmark]: CodeCheck took 1533.01ms. Allocated memory is still 111.1MB. Free memory was 67.6MB in the beginning and 59.2MB in the end (delta: 8.4MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-10-17 17:03:37,115 INFO L158 Benchmark]: Witness Printer took 36.64ms. Allocated memory is still 111.1MB. Free memory was 59.2MB in the beginning and 57.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:03:37,119 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: 1.5s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 6 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 53 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, 0.7s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 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: -1]: 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={122:0}, str2={121:0}] [L20] COND FALSE !(i