./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e07c452b8f05e09d4c441967530cedd94d7de761a5bf707d93a55d986c5a611 .................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 03:25:48,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 03:25:48,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 03:25:48,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 03:25:48,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 03:25:48,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 03:25:48,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 03:25:48,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 03:25:48,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 03:25:48,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 03:25:48,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 03:25:48,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 03:25:48,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 03:25:48,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 03:25:48,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 03:25:48,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 03:25:48,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 03:25:48,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 03:25:48,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 03:25:48,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 03:25:48,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 03:25:48,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 03:25:48,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 03:25:48,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 03:25:48,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 03:25:48,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 03:25:48,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 03:25:48,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 03:25:48,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 03:25:48,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 03:25:48,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 03:25:48,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 03:25:48,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 03:25:48,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 03:25:48,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 03:25:48,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 03:25:48,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 03:25:48,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 03:25:48,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 03:25:48,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 03:25:48,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 03:25:48,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/config/svcomp-Overflow-32bit-Kojak_Default.epf [2021-10-29 03:25:48,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 03:25:48,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 03:25:48,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 03:25:48,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 03:25:48,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 03:25:48,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 03:25:48,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 03:25:48,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 03:25:48,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 03:25:48,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 03:25:48,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 03:25:48,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 03:25:48,880 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 03:25:48,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 03:25:48,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 03:25:48,880 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 03:25:48,881 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 03:25:48,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 03:25:48,881 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 03:25:48,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 03:25:48,882 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 03:25:48,882 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 03:25:48,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 03:25:48,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:25:48,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 03:25:48,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 03:25:48,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 03:25:48,884 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 03:25:48,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 03:25:48,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 03:25:48,885 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_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e07c452b8f05e09d4c441967530cedd94d7de761a5bf707d93a55d986c5a611 [2021-10-29 03:25:49,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 03:25:49,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 03:25:49,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 03:25:49,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 03:25:49,201 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 03:25:49,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2021-10-29 03:25:49,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/data/9ef97e13c/10467871022945d98cac7b28e1293fae/FLAG5059676d3 [2021-10-29 03:25:49,703 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 03:25:49,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2021-10-29 03:25:49,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/data/9ef97e13c/10467871022945d98cac7b28e1293fae/FLAG5059676d3 [2021-10-29 03:25:50,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/data/9ef97e13c/10467871022945d98cac7b28e1293fae [2021-10-29 03:25:50,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 03:25:50,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 03:25:50,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 03:25:50,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 03:25:50,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 03:25:50,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681a1d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50, skipping insertion in model container [2021-10-29 03:25:50,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 03:25:50,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 03:25:50,306 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/sv-benchmarks/c/recursive-simple/sum_non_eq-1.c[563,576] [2021-10-29 03:25:50,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:25:50,317 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 03:25:50,328 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/sv-benchmarks/c/recursive-simple/sum_non_eq-1.c[563,576] [2021-10-29 03:25:50,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:25:50,342 INFO L208 MainTranslator]: Completed translation [2021-10-29 03:25:50,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50 WrapperNode [2021-10-29 03:25:50,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 03:25:50,344 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 03:25:50,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 03:25:50,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 03:25:50,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 03:25:50,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 03:25:50,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 03:25:50,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 03:25:50,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 03:25:50,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 03:25:50,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 03:25:50,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 03:25:50,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:25:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 03:25:50,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 03:25:50,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 03:25:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 03:25:50,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 03:25:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-10-29 03:25:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-10-29 03:25:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 03:25:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 03:25:50,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 03:25:50,811 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 03:25:50,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:25:50 BoogieIcfgContainer [2021-10-29 03:25:50,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 03:25:50,814 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 03:25:50,814 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 03:25:50,837 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 03:25:50,838 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:25:50" (1/1) ... [2021-10-29 03:25:50,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 03:25:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:25:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 22 states and 23 transitions. [2021-10-29 03:25:50,901 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-29 03:25:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 03:25:50,905 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:25:50,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:25:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:25:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:25:51,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:25:51,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 25 states and 27 transitions. [2021-10-29 03:25:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-29 03:25:51,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 03:25:51,157 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:25:51,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:25:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:25:51,178 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 03:25:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:25:51,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:25:51,231 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 03:25:51,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 03:25:51,252 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-10-29 03:25:51,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 03:25:51 ImpRootNode [2021-10-29 03:25:51,276 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 03:25:51,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 03:25:51,277 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 03:25:51,277 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 03:25:51,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:25:50" (3/4) ... [2021-10-29 03:25:51,279 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 03:25:51,317 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 03:25:51,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 03:25:51,320 INFO L168 Benchmark]: Toolchain (without parser) took 1200.93 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 49.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:25:51,321 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:25:51,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.90 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 81.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 03:25:51,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.14 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 80.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:25:51,325 INFO L168 Benchmark]: Boogie Preprocessor took 20.09 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 79.7 MB in the end (delta: 613.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:25:51,326 INFO L168 Benchmark]: RCFGBuilder took 413.34 ms. Allocated memory is still 104.9 MB. Free memory was 79.7 MB in the beginning and 68.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 03:25:51,327 INFO L168 Benchmark]: CodeCheck took 462.01 ms. Allocated memory is still 104.9 MB. Free memory was 68.3 MB in the beginning and 51.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 03:25:51,328 INFO L168 Benchmark]: Witness Printer took 41.14 ms. Allocated memory is still 104.9 MB. Free memory was 51.6 MB in the beginning and 49.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:25:51,333 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 2 procedures, 22 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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: 10]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int a = __VERIFIER_nondet_int() ; [L16] int b = __VERIFIER_nondet_int(); [L17] CALL sum(a, b) VAL [\old(m)=0, \old(n)=-2147483648] [L7] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] [L10] n - 1 VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.90 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 81.7 MB in the end (delta: -29.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.14 ms. Allocated memory is still 104.9 MB. Free memory was 81.7 MB in the beginning and 80.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.09 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 79.7 MB in the end (delta: 613.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 413.34 ms. Allocated memory is still 104.9 MB. Free memory was 79.7 MB in the beginning and 68.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 462.01 ms. Allocated memory is still 104.9 MB. Free memory was 68.3 MB in the beginning and 51.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 41.14 ms. Allocated memory is still 104.9 MB. Free memory was 51.6 MB in the beginning and 49.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-29 03:25:51,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f8d19e7-59ac-42b5-b0a7-1510a038628f/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...