./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/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_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ --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 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 00:39:33,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:39:33,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:39:33,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:39:33,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:39:33,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:39:33,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:39:33,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:39:33,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:39:33,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:39:33,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:39:33,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:39:33,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:39:33,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:39:33,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:39:33,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:39:33,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:39:33,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:39:33,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:39:33,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:39:33,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:39:33,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:39:33,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:39:33,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:39:33,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:39:33,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:39:33,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:39:33,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:39:33,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:39:33,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:39:33,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:39:33,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:39:33,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:39:33,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:39:33,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:39:33,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:39:33,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:39:33,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:39:33,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:39:33,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:39:33,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:39:33,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/config/svcomp-Overflow-32bit-Kojak_Default.epf [2021-11-23 00:39:33,989 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:39:33,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:39:33,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 00:39:33,995 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 00:39:33,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:39:33,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:39:33,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:39:33,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 00:39:34,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 00:39:34,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:39:34,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 00:39:34,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:39:34,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:39:34,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:39:34,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:39:34,005 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 00:39:34,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 00:39:34,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:39:34,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:39:34,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:39:34,006 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 00:39:34,006 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 00:39:34,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:39:34,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:39:34,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:39:34,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:39:34,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:39:34,007 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 00:39:34,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:39:34,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:39:34,008 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_9bb77e95-be44-4938-882e-b44c41a4c26d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04682225c8f8ef1d718e2eff7a5dbc28147daac3b8dcdca523479af4f0e32241 [2021-11-23 00:39:34,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:39:34,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:39:34,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:39:34,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:39:34,320 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:39:34,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2021-11-23 00:39:34,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/data/c502289cc/5b50b2f7df92410a9845b5403a356d4d/FLAG5ef426b02 [2021-11-23 00:39:34,822 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:39:34,823 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c [2021-11-23 00:39:34,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/data/c502289cc/5b50b2f7df92410a9845b5403a356d4d/FLAG5ef426b02 [2021-11-23 00:39:35,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/data/c502289cc/5b50b2f7df92410a9845b5403a356d4d [2021-11-23 00:39:35,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:39:35,216 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:39:35,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:39:35,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:39:35,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:39:35,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e19ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35, skipping insertion in model container [2021-11-23 00:39:35,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:39:35,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:39:35,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c[948,961] [2021-11-23 00:39:35,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:39:35,445 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:39:35,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/sv-benchmarks/c/recursive/EvenOdd03WithOverflowBug.c[948,961] [2021-11-23 00:39:35,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:39:35,473 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:39:35,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35 WrapperNode [2021-11-23 00:39:35,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:39:35,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:39:35,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:39:35,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:39:35,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,513 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2021-11-23 00:39:35,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:39:35,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:39:35,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:39:35,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:39:35,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:39:35,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:39:35,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:39:35,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:39:35,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:39:35,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 00:39:35,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 00:39:35,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 00:39:35,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:39:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2021-11-23 00:39:35,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2021-11-23 00:39:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:39:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2021-11-23 00:39:35,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2021-11-23 00:39:35,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:39:35,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:39:35,659 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:39:35,660 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:39:35,798 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:39:35,825 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:39:35,826 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 00:39:35,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:35 BoogieIcfgContainer [2021-11-23 00:39:35,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:39:35,830 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 00:39:35,830 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 00:39:35,840 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 00:39:35,840 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:35" (1/1) ... [2021-11-23 00:39:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:39:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:39:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 26 states and 30 transitions. [2021-11-23 00:39:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-23 00:39:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 00:39:35,916 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:39:35,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:39:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:39:36,116 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 00:39:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:39:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 30 states and 35 transitions. [2021-11-23 00:39:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-11-23 00:39:36,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 00:39:36,201 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:39:36,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:39:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:39:36,223 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 00:39:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:39:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:39:36,300 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 00:39:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:39:36,332 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-11-23 00:39:36,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 12:39:36 ImpRootNode [2021-11-23 00:39:36,365 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 00:39:36,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 00:39:36,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 00:39:36,367 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 00:39:36,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:39:35" (3/4) ... [2021-11-23 00:39:36,370 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 00:39:36,418 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 00:39:36,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 00:39:36,419 INFO L158 Benchmark]: Toolchain (without parser) took 1202.12ms. Allocated memory is still 111.1MB. Free memory was 74.4MB in the beginning and 53.9MB in the end (delta: 20.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-11-23 00:39:36,420 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 85.5MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:39:36,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.80ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 84.9MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 00:39:36,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.38ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 83.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:39:36,424 INFO L158 Benchmark]: Boogie Preprocessor took 17.19ms. Allocated memory is still 111.1MB. Free memory was 83.8MB in the beginning and 82.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:39:36,424 INFO L158 Benchmark]: RCFGBuilder took 297.26ms. Allocated memory is still 111.1MB. Free memory was 82.8MB in the beginning and 72.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 00:39:36,427 INFO L158 Benchmark]: CodeCheck took 535.64ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 55.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 00:39:36,428 INFO L158 Benchmark]: Witness Printer took 51.36ms. Allocated memory is still 111.1MB. Free memory was 55.5MB in the beginning and 53.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:39:36,433 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 3 procedures, 26 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 4 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 40 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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: 34]: integer overflow possible integer overflow possible We found a FailurePath: [L40] int n = __VERIFIER_nondet_int(); [L41] CALL isEven(n) VAL [\old(n)=-2147483648] [L29] COND FALSE !(n == 0) VAL [\old(n)=-2147483648, n=-2147483648] [L31] COND FALSE !(n == 1) VAL [\old(n)=-2147483648, n=-2147483648] [L34] n - 1 VAL [\old(n)=-2147483648, n=-2147483648] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 85.6MB in the beginning and 85.5MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.80ms. Allocated memory is still 111.1MB. Free memory was 74.2MB in the beginning and 84.9MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.38ms. Allocated memory is still 111.1MB. Free memory was 84.9MB in the beginning and 83.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.19ms. Allocated memory is still 111.1MB. Free memory was 83.8MB in the beginning and 82.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 297.26ms. Allocated memory is still 111.1MB. Free memory was 82.8MB in the beginning and 72.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 535.64ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 55.5MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 51.36ms. Allocated memory is still 111.1MB. Free memory was 55.5MB in the beginning and 53.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-23 00:39:36,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9bb77e95-be44-4938-882e-b44c41a4c26d/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, 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(OVERFLOW)