./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/joey.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/joey.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b8eecb1f582817a24edea1132ecb15ddc358f67da7ed612a076c099e943ee704 ...................................................................................................................................................................................................................................................................................................................... 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 04:41:27,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:41:27,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:41:27,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:41:27,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:41:27,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:41:27,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:41:27,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:41:27,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:41:27,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:41:27,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:41:27,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:41:27,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:41:27,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:41:27,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:41:27,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:41:27,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:41:27,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:41:27,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:41:27,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:41:27,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:41:27,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:41:27,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:41:27,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:41:27,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:41:27,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:41:27,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:41:27,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:41:27,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:41:27,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:41:27,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:41:27,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:41:27,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:41:27,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:41:27,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:41:27,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:41:27,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:41:27,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:41:27,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:41:27,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:41:27,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:41:27,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-29 04:41:27,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:41:27,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:41:27,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:41:27,517 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:41:27,517 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:41:27,518 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:41:27,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:41:27,518 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:41:27,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:41:27,519 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:41:27,520 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:41:27,520 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:41:27,520 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:41:27,520 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:41:27,521 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:41:27,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:41:27,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 04:41:27,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:41:27,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:41:27,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:41:27,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:41:27,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:41:27,523 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-29 04:41:27,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:41:27,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:41:27,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:41:27,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:41:27,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:41:27,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:41:27,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:41:27,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:41:27,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:41:27,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:41:27,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:41:27,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:41:27,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:41:27,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:41:27,527 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8eecb1f582817a24edea1132ecb15ddc358f67da7ed612a076c099e943ee704 [2021-10-29 04:41:27,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:41:27,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:41:27,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:41:27,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:41:27,864 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:41:27,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/termination-crafted-lit/joey.c [2021-10-29 04:41:27,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/data/9445eb819/344a8985d0894ef0a62b9c56eff4ff93/FLAG197e7b678 [2021-10-29 04:41:28,498 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:41:28,498 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/sv-benchmarks/c/termination-crafted-lit/joey.c [2021-10-29 04:41:28,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/data/9445eb819/344a8985d0894ef0a62b9c56eff4ff93/FLAG197e7b678 [2021-10-29 04:41:28,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/data/9445eb819/344a8985d0894ef0a62b9c56eff4ff93 [2021-10-29 04:41:28,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:41:28,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:41:28,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:41:28,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:41:28,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:41:28,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:41:28" (1/1) ... [2021-10-29 04:41:28,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c3abe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:28, skipping insertion in model container [2021-10-29 04:41:28,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:41:28" (1/1) ... [2021-10-29 04:41:28,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:41:28,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:41:29,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:41:29,136 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:41:29,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:41:29,163 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:41:29,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29 WrapperNode [2021-10-29 04:41:29,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:41:29,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:41:29,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:41:29,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:41:29,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:41:29,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:41:29,201 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:41:29,201 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:41:29,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:41:29,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:41:29,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:41:29,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:41:29,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (1/1) ... [2021-10-29 04:41:29,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:41:29,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:41:29,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:41:29,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:41:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2021-10-29 04:41:29,323 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2021-10-29 04:41:29,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:41:29,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:41:29,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:41:29,629 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 04:41:29,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:41:29 BoogieIcfgContainer [2021-10-29 04:41:29,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:41:29,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:41:29,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:41:29,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:41:29,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:41:28" (1/3) ... [2021-10-29 04:41:29,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e68d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:41:29, skipping insertion in model container [2021-10-29 04:41:29,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:41:29" (2/3) ... [2021-10-29 04:41:29,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e68d0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:41:29, skipping insertion in model container [2021-10-29 04:41:29,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:41:29" (3/3) ... [2021-10-29 04:41:29,658 INFO L111 eAbstractionObserver]: Analyzing ICFG joey.c [2021-10-29 04:41:29,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:41:29,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-29 04:41:29,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:41:29,766 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:41:29,767 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-29 04:41:29,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.588235294117647) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-10-29 04:41:29,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:41:29,791 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:29,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:41:29,792 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-29 04:41:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1873828178, now seen corresponding path program 1 times [2021-10-29 04:41:29,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:29,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092132492] [2021-10-29 04:41:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:29,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 04:41:30,137 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 04:41:30,138 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 04:41:30,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092132492] [2021-10-29 04:41:30,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092132492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 04:41:30,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 04:41:30,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 04:41:30,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541339611] [2021-10-29 04:41:30,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 04:41:30,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 04:41:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 04:41:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-29 04:41:30,167 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.588235294117647) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:30,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 04:41:30,408 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-10-29 04:41:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 04:41:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 04:41:30,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 04:41:30,420 INFO L225 Difference]: With dead ends: 64 [2021-10-29 04:41:30,421 INFO L226 Difference]: Without dead ends: 52 [2021-10-29 04:41:30,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-29 04:41:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-29 04:41:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-10-29 04:41:30,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 37 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-29 04:41:30,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-10-29 04:41:30,476 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 6 [2021-10-29 04:41:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 04:41:30,477 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-10-29 04:41:30,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:41:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-10-29 04:41:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 04:41:30,478 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:41:30,479 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 04:41:30,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 04:41:30,479 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-29 04:41:30,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:41:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1873828402, now seen corresponding path program 1 times [2021-10-29 04:41:30,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:41:30,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356215242] [2021-10-29 04:41:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:41:30,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:41:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:41:30,492 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:41:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:41:30,521 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:41:30,522 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:41:30,524 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location recErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-29 04:41:30,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 04:41:30,532 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 04:41:30,538 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:41:30,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:41:30 BoogieIcfgContainer [2021-10-29 04:41:30,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:41:30,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:41:30,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:41:30,556 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:41:30,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:41:29" (3/4) ... [2021-10-29 04:41:30,565 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:41:30,619 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:41:30,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:41:30,629 INFO L168 Benchmark]: Toolchain (without parser) took 1720.84 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.2 MB in the beginning and 80.4 MB in the end (delta: -16.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:30,630 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:41:30,631 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.92 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 72.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:30,632 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.55 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:41:30,633 INFO L168 Benchmark]: Boogie Preprocessor took 32.76 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 70.1 MB in the end (delta: 874.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:30,633 INFO L168 Benchmark]: RCFGBuilder took 403.20 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 60.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:41:30,634 INFO L168 Benchmark]: TraceAbstraction took 915.67 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.6 MB in the beginning and 82.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 825.6 kB. Max. memory is 16.1 GB. [2021-10-29 04:41:30,635 INFO L168 Benchmark]: Witness Printer took 64.18 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 80.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:41:30,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.92 ms. Allocated memory is still 96.5 MB. Free memory was 63.9 MB in the beginning and 72.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.55 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.76 ms. Allocated memory is still 96.5 MB. Free memory was 71.0 MB in the beginning and 70.1 MB in the end (delta: 874.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 403.20 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 60.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 915.67 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.6 MB in the beginning and 82.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 825.6 kB. Max. memory is 16.1 GB. * Witness Printer took 64.18 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 80.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y; [L22] CALL rec(x) VAL [\old(x)=2147483647] [L10] COND FALSE !(x <= 0) VAL [\old(x)=2147483647, x=2147483647] [L12] COND FALSE !(x%2 == 0) VAL [\old(x)=2147483647, x=2147483647] [L15] ++x VAL [\old(x)=2147483647, x=2147483647] - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 13]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 15]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 50 SDslu, 66 SDs, 0 SdLazy, 62 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=1, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 04:41:30,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ccbb9b1-2c2f-4704-be51-1bf148cc4a8b/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...