./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY --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 64bit --witnessprinter.graph.data.programhash a87305f2bf70381ae4b40b8cfb9e2ca1c7e8a065 .......................................................................................................................................................................................................................... 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-4e77c04 [2021-10-13 04:00:57,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 04:00:57,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 04:00:57,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 04:00:57,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 04:00:57,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 04:00:57,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 04:00:57,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 04:00:57,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 04:00:57,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 04:00:57,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 04:00:57,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 04:00:57,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 04:00:57,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 04:00:57,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 04:00:57,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 04:00:57,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 04:00:57,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 04:00:57,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 04:00:57,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 04:00:57,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 04:00:57,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 04:00:57,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 04:00:57,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 04:00:57,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 04:00:57,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 04:00:57,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 04:00:57,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 04:00:57,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 04:00:57,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 04:00:57,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 04:00:57,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 04:00:57,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 04:00:57,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 04:00:57,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 04:00:57,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 04:00:57,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 04:00:57,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 04:00:57,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 04:00:57,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 04:00:57,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 04:00:57,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/config/svcomp-Overflow-64bit-Kojak_Default.epf [2021-10-13 04:00:57,597 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 04:00:57,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 04:00:57,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 04:00:57,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 04:00:57,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 04:00:57,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 04:00:57,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 04:00:57,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 04:00:57,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 04:00:57,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 04:00:57,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 04:00:57,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 04:00:57,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 04:00:57,603 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 04:00:57,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 04:00:57,603 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 04:00:57,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 04:00:57,604 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 04:00:57,604 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 04:00:57,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 04:00:57,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:00:57,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 04:00:57,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 04:00:57,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 04:00:57,605 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 04:00:57,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 04:00:57,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 04:00:57,606 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_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a87305f2bf70381ae4b40b8cfb9e2ca1c7e8a065 [2021-10-13 04:00:57,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 04:00:57,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 04:00:58,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 04:00:58,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 04:00:58,003 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 04:00:58,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c [2021-10-13 04:00:58,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/data/dbfd47966/e8c99439f44447f0b729ac19dba0ff42/FLAG632c77c54 [2021-10-13 04:00:58,571 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 04:00:58,572 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/sv-benchmarks/c/termination-crafted/NestedRecursion_2a.c [2021-10-13 04:00:58,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/data/dbfd47966/e8c99439f44447f0b729ac19dba0ff42/FLAG632c77c54 [2021-10-13 04:00:58,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/data/dbfd47966/e8c99439f44447f0b729ac19dba0ff42 [2021-10-13 04:00:58,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 04:00:58,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 04:00:58,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 04:00:58,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 04:00:58,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 04:00:58,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:00:58" (1/1) ... [2021-10-13 04:00:58,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6548db94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:58, skipping insertion in model container [2021-10-13 04:00:58,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:00:58" (1/1) ... [2021-10-13 04:00:58,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 04:00:58,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 04:00:59,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:00:59,158 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 04:00:59,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:00:59,216 INFO L208 MainTranslator]: Completed translation [2021-10-13 04:00:59,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59 WrapperNode [2021-10-13 04:00:59,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 04:00:59,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 04:00:59,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 04:00:59,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 04:00:59,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 04:00:59,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 04:00:59,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 04:00:59,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 04:00:59,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 04:00:59,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 04:00:59,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 04:00:59,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 04:00:59,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:00:59,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/z3 [2021-10-13 04:00:59,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 04:00:59,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 04:00:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-13 04:00:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-13 04:00:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 04:00:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 04:00:59,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 04:00:59,598 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 04:00:59,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:00:59 BoogieIcfgContainer [2021-10-13 04:00:59,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 04:00:59,601 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 04:00:59,602 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 04:00:59,628 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 04:00:59,628 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:00:59" (1/1) ... [2021-10-13 04:00:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 04:00:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:00:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2021-10-13 04:00:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-13 04:00:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 04:00:59,693 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:00:59,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:00:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:00:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 04:00:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:00:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 19 states and 23 transitions. [2021-10-13 04:00:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-13 04:00:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 04:00:59,996 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:00:59,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:01:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:01:00,005 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:01:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:01:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:01:00,054 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 04:01:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 04:01:00,077 WARN L480 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2021-10-13 04:01:00,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 04:01:00 ImpRootNode [2021-10-13 04:01:00,102 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 04:01:00,103 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 04:01:00,103 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 04:01:00,103 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 04:01:00,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:00:59" (3/4) ... [2021-10-13 04:01:00,106 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 04:01:00,146 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 04:01:00,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 04:01:00,152 INFO L168 Benchmark]: Toolchain (without parser) took 1202.23 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 55.7 MB in the beginning and 72.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-13 04:01:00,154 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 92.3 MB. Free memory was 71.9 MB in the beginning and 71.9 MB in the end (delta: 63.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:01:00,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.18 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 55.5 MB in the beginning and 99.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 04:01:00,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.12 ms. Allocated memory is still 121.6 MB. Free memory was 99.2 MB in the beginning and 98.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:01:00,160 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 ms. Allocated memory is still 121.6 MB. Free memory was 98.0 MB in the beginning and 97.2 MB in the end (delta: 789.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:01:00,162 INFO L168 Benchmark]: RCFGBuilder took 325.01 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 88.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 04:01:00,165 INFO L168 Benchmark]: CodeCheck took 500.67 ms. Allocated memory is still 121.6 MB. Free memory was 88.3 MB in the beginning and 74.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 04:01:00,167 INFO L168 Benchmark]: Witness Printer took 46.59 ms. Allocated memory is still 121.6 MB. Free memory was 74.2 MB in the beginning and 72.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 04:01:00,171 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, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 420.4ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 11.0ms SsaConstructionTime, 30.4ms SatisfiabilityAnalysisTime, 114.5ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 15]: integer overflow possible integer overflow possible We found a FailurePath: [L19] int x = __VERIFIER_nondet_int(); [L20] CALL g(x) VAL [\old(x)=-2147483648] [L12] COND FALSE !(x == 0) VAL [\old(x)=-2147483648, x=-2147483648] [L15] x - 1 VAL [\old(x)=-2147483648, x=-2147483648] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 92.3 MB. Free memory was 71.9 MB in the beginning and 71.9 MB in the end (delta: 63.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.18 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 55.5 MB in the beginning and 99.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.12 ms. Allocated memory is still 121.6 MB. Free memory was 99.2 MB in the beginning and 98.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.50 ms. Allocated memory is still 121.6 MB. Free memory was 98.0 MB in the beginning and 97.2 MB in the end (delta: 789.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 325.01 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 88.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * CodeCheck took 500.67 ms. Allocated memory is still 121.6 MB. Free memory was 88.3 MB in the beginning and 74.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 46.59 ms. Allocated memory is still 121.6 MB. Free memory was 74.2 MB in the beginning and 72.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 04:01:00,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0d61b76-194f-4e6a-9eb8-a0166c038a46/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...