./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ --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 0c9e9bbe7dcc8bff15d80e0cdda24a07d629fdcc505b89526a3de5ae567627e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:37:33,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:37:33,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:37:33,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:37:33,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:37:33,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:37:33,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:37:33,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:37:33,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:37:33,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:37:33,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:37:33,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:37:33,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:37:33,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:37:33,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:37:33,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:37:33,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:37:33,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:37:33,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:37:33,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:37:33,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:37:33,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:37:33,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:37:33,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:37:33,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:37:33,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:37:33,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:37:33,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:37:33,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:37:33,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:37:33,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:37:33,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:37:33,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:37:33,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:37:33,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:37:33,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:37:33,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:37:33,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:37:33,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:37:33,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:37:33,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:37:33,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-11-23 01:37:33,323 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:37:33,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:37:33,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:37:33,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:37:33,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:37:33,325 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:37:33,325 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 01:37:33,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:37:33,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:37:33,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:37:33,329 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 01:37:33,329 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 01:37:33,329 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 01:37:33,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:37:33,330 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:37:33,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:37:33,330 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:37:33,330 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:37:33,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:37:33,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:37:33,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:37:33,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:37:33,331 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:37:33,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:37:33,332 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_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c9e9bbe7dcc8bff15d80e0cdda24a07d629fdcc505b89526a3de5ae567627e5 [2021-11-23 01:37:33,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:37:33,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:37:33,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:37:33,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:37:33,698 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:37:33,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2021-11-23 01:37:33,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/data/e94d24424/e27b5d4313274d4b9164e6d69be34694/FLAG27c3da54d [2021-11-23 01:37:34,192 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:37:34,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2021-11-23 01:37:34,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/data/e94d24424/e27b5d4313274d4b9164e6d69be34694/FLAG27c3da54d [2021-11-23 01:37:34,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/data/e94d24424/e27b5d4313274d4b9164e6d69be34694 [2021-11-23 01:37:34,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:37:34,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:37:34,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:37:34,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:37:34,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:37:34,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7023f031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34, skipping insertion in model container [2021-11-23 01:37:34,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:37:34,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:37:34,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:37:34,841 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:37:34,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:37:34,874 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:37:34,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34 WrapperNode [2021-11-23 01:37:34,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:37:34,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:37:34,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:37:34,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:37:34,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,916 INFO L137 Inliner]: procedures = 7, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-11-23 01:37:34,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:37:34,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:37:34,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:37:34,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:37:34,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:37:34,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:37:34,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:37:34,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:37:34,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:37:34" (1/1) ... [2021-11-23 01:37:34,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:37:34,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:37:34,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:37:35,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:37:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 01:37:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:37:35,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:37:35,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 01:37:35,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:37:35,112 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:37:35,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:37:35,234 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:37:35,253 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:37:35,253 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 01:37:35,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:35 BoogieIcfgContainer [2021-11-23 01:37:35,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:37:35,257 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:37:35,257 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:37:35,276 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:37:35,276 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:35" (1/1) ... [2021-11-23 01:37:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:37:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2021-11-23 01:37:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-23 01:37:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 01:37:35,348 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:35,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2021-11-23 01:37:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-23 01:37:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 01:37:35,548 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:35,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2021-11-23 01:37:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-23 01:37:35,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 01:37:35,631 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:35,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:37:35,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 01:37:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:37:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2021-11-23 01:37:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-23 01:37:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 01:37:35,759 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:37:35,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:37:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:37:35,783 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:37:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:37:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:37:35,834 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 01:37:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 01:37:35,852 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2021-11-23 01:37:35,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:37:35 ImpRootNode [2021-11-23 01:37:35,877 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:37:35,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:37:35,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:37:35,878 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:37:35,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:37:35" (3/4) ... [2021-11-23 01:37:35,881 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 01:37:35,916 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:37:35,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:37:35,917 INFO L158 Benchmark]: Toolchain (without parser) took 1316.90ms. Allocated memory is still 100.7MB. Free memory was 58.8MB in the beginning and 42.0MB in the end (delta: 16.8MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-23 01:37:35,918 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 74.8MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:37:35,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.61ms. Allocated memory is still 100.7MB. Free memory was 58.6MB in the beginning and 75.1MB in the end (delta: -16.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:37:35,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.19ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:37:35,919 INFO L158 Benchmark]: Boogie Preprocessor took 32.84ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 73.0MB in the end (delta: 843.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:37:35,920 INFO L158 Benchmark]: RCFGBuilder took 304.82ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 63.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:37:35,920 INFO L158 Benchmark]: CodeCheck took 620.64ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 43.6MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-23 01:37:35,921 INFO L158 Benchmark]: Witness Printer took 38.18ms. Allocated memory is still 100.7MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:37:35,924 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, 10 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 26 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 9 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={2:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [a={2:0}, i=0, p={2:0}] [L3] i++ [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={3:0}, i=1, p={2:0}] [L5] COND FALSE !(i == 0) VAL [a={3:0}, i=1, p={2:0}] [L8] p[0] = 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 100.7MB. Free memory was 74.9MB in the beginning and 74.8MB in the end (delta: 90.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.61ms. Allocated memory is still 100.7MB. Free memory was 58.6MB in the beginning and 75.1MB in the end (delta: -16.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.19ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.84ms. Allocated memory is still 100.7MB. Free memory was 73.8MB in the beginning and 73.0MB in the end (delta: 843.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 304.82ms. Allocated memory is still 100.7MB. Free memory was 72.6MB in the beginning and 63.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 620.64ms. Allocated memory is still 100.7MB. Free memory was 63.4MB in the beginning and 43.6MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 38.18ms. Allocated memory is still 100.7MB. Free memory was 43.6MB in the beginning and 42.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 01:37:35,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca55bc-e569-448a-8525-1288844d8dd4/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)