./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --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_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/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_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/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_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/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 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 ..................................................................................................................................................................................................................................................................................................................................... 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 05:05:30,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 05:05:30,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 05:05:30,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 05:05:30,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 05:05:30,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 05:05:30,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 05:05:30,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 05:05:30,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 05:05:30,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 05:05:30,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 05:05:30,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 05:05:30,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 05:05:30,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 05:05:30,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 05:05:30,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 05:05:30,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 05:05:30,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 05:05:30,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 05:05:30,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 05:05:30,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 05:05:30,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 05:05:30,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 05:05:30,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 05:05:30,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 05:05:30,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 05:05:30,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 05:05:30,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 05:05:30,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 05:05:30,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 05:05:30,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 05:05:30,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 05:05:30,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 05:05:30,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 05:05:30,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 05:05:30,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 05:05:30,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 05:05:30,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 05:05:30,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 05:05:30,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 05:05:30,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 05:05:30,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2021-10-13 05:05:30,219 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 05:05:30,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 05:05:30,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 05:05:30,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 05:05:30,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 05:05:30,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 05:05:30,223 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 05:05:30,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 05:05:30,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 05:05:30,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 05:05:30,224 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 05:05:30,231 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 05:05:30,231 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 05:05:30,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 05:05:30,232 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 05:05:30,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 05:05:30,232 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 05:05:30,232 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 05:05:30,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 05:05:30,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 05:05:30,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 05:05:30,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 05:05:30,234 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 05:05:30,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 05:05:30,234 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_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016c9c68c49c3eaa925dd855e3c8f320ab9c50c9 [2021-10-13 05:05:30,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 05:05:30,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 05:05:30,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 05:05:30,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 05:05:30,539 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 05:05:30,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-10-13 05:05:30,642 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/data/9849a491a/57d14713c32f4bc18c41bd2472667641/FLAGa6af0db69 [2021-10-13 05:05:31,192 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 05:05:31,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i [2021-10-13 05:05:31,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/data/9849a491a/57d14713c32f4bc18c41bd2472667641/FLAGa6af0db69 [2021-10-13 05:05:31,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/data/9849a491a/57d14713c32f4bc18c41bd2472667641 [2021-10-13 05:05:31,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 05:05:31,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 05:05:31,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 05:05:31,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 05:05:31,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 05:05:31,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:31,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c428d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31, skipping insertion in model container [2021-10-13 05:05:31,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:31,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 05:05:31,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 05:05:31,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 05:05:31,889 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 05:05:31,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 05:05:31,999 INFO L208 MainTranslator]: Completed translation [2021-10-13 05:05:32,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31 WrapperNode [2021-10-13 05:05:32,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 05:05:32,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 05:05:32,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 05:05:32,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 05:05:32,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 05:05:32,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 05:05:32,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 05:05:32,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 05:05:32,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 05:05:32,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 05:05:32,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 05:05:32,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 05:05:32,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:05:31" (1/1) ... [2021-10-13 05:05:32,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 05:05:32,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/z3 [2021-10-13 05:05:32,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 05:05:32,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 05:05:32,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 05:05:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 05:05:32,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 05:05:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 05:05:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 05:05:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 05:05:32,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 05:05:32,809 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 05:05:32,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:05:32 BoogieIcfgContainer [2021-10-13 05:05:32,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 05:05:32,813 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 05:05:32,814 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 05:05:32,825 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 05:05:32,825 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:05:32" (1/1) ... [2021-10-13 05:05:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 05:05:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 44 states and 49 transitions. [2021-10-13 05:05:32,897 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-10-13 05:05:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 05:05:32,900 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:32,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:33,118 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 05:05:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 43 states and 48 transitions. [2021-10-13 05:05:33,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-10-13 05:05:33,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 05:05:33,158 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:33,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:33,322 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 05:05:33,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 45 states and 52 transitions. [2021-10-13 05:05:33,582 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-10-13 05:05:33,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 05:05:33,582 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:33,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:33,608 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 05:05:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 47 states and 56 transitions. [2021-10-13 05:05:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2021-10-13 05:05:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 05:05:33,623 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:33,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:33,688 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 05:05:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:33,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 48 states and 59 transitions. [2021-10-13 05:05:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-10-13 05:05:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 05:05:33,837 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:33,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:33,882 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 05:05:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 49 states and 60 transitions. [2021-10-13 05:05:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2021-10-13 05:05:33,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 05:05:33,906 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:33,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:33,999 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 05:05:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2021-10-13 05:05:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-10-13 05:05:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 05:05:34,200 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:34,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:05:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 52 states and 66 transitions. [2021-10-13 05:05:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-10-13 05:05:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 05:05:34,903 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:34,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:05:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 54 states and 69 transitions. [2021-10-13 05:05:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-10-13 05:05:35,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 05:05:35,910 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:35,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:05:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 50 states and 60 transitions. [2021-10-13 05:05:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-10-13 05:05:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 05:05:36,341 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:36,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:05:36,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 49 states and 59 transitions. [2021-10-13 05:05:36,392 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-10-13 05:05:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 05:05:36,393 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:36,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 05:05:36,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:36,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2021-10-13 05:05:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-10-13 05:05:36,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 05:05:36,626 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:36,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:05:36,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 50 states and 61 transitions. [2021-10-13 05:05:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2021-10-13 05:05:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 05:05:36,656 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:36,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:05:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 05:05:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:05:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 51 states and 62 transitions. [2021-10-13 05:05:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2021-10-13 05:05:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 05:05:36,737 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:05:36,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:05:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 05:05:36,753 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 05:05:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 05:05:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 05:05:36,800 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 05:05:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 05:05:36,868 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2021-10-13 05:05:36,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 05:05:36 ImpRootNode [2021-10-13 05:05:36,901 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 05:05:36,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 05:05:36,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 05:05:36,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 05:05:36,902 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:05:32" (3/4) ... [2021-10-13 05:05:36,904 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 05:05:36,986 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1f919a2-a76d-4d0a-b403-3c4114bbcdc6/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 05:05:36,987 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 05:05:36,989 INFO L168 Benchmark]: Toolchain (without parser) took 5465.09 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 79.6 MB in the beginning and 107.9 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:05:36,990 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 111.1 MB. Free memory was 67.2 MB in the beginning and 67.1 MB in the end (delta: 56.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:05:36,990 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.08 ms. Allocated memory is still 111.1 MB. Free memory was 79.6 MB in the beginning and 80.2 MB in the end (delta: -592.0 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 05:05:36,991 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.48 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 78.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 05:05:36,992 INFO L168 Benchmark]: Boogie Preprocessor took 61.87 ms. Allocated memory is still 111.1 MB. Free memory was 78.1 MB in the beginning and 76.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:05:36,993 INFO L168 Benchmark]: RCFGBuilder took 656.29 ms. Allocated memory is still 111.1 MB. Free memory was 76.9 MB in the beginning and 58.1 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-13 05:05:36,994 INFO L168 Benchmark]: CodeCheck took 4087.58 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 57.8 MB in the beginning and 110.0 MB in the end (delta: -52.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:05:36,994 INFO L168 Benchmark]: Witness Printer took 85.52 ms. Allocated memory is still 138.4 MB. Free memory was 109.0 MB in the beginning and 107.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:05:36,998 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, 44 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 4022.6ms, OverallIterations: 14, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24656 SDtfs, 25324 SDslu, 19008 SDs, 0 SdLazy, 102314 SolverSat, 37298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1413.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 585 GetRequests, 494 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 2527.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 32.9ms SsaConstructionTime, 198.2ms SatisfiabilityAnalysisTime, 1133.8ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 475 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 5/13 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: 529]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND FALSE !(length < 1) [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length*sizeof(int)); [L521] int i = 0; [L521] COND TRUE i < length [L523] arr[i] = __VERIFIER_nondet_int() [L521] i++ [L521] COND FALSE !(i < length) [L526] i=0 [L526] COND TRUE i