./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB --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 c86bd149cf8dcec56d0b62aefda03e866c4e374070f20ea19c317a4fa78bf8c1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:05:45,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:05:45,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:05:45,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:05:45,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:05:45,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:05:45,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:05:45,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:05:45,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:05:45,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:05:45,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:05:45,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:05:45,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:05:45,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:05:45,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:05:45,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:05:45,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:05:45,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:05:45,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:05:45,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:05:45,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:05:45,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:05:45,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:05:45,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:05:45,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:05:45,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:05:45,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:05:45,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:05:45,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:05:45,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:05:45,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:05:45,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:05:45,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:05:45,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:05:45,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:05:45,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:05:45,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:05:45,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:05:45,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:05:45,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:05:45,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:05:45,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-10-17 17:05:45,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:05:45,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:05:45,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:05:45,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-10-17 17:05:45,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 17:05:45,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 17:05:45,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:05:45,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:05:45,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:05:45,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:05:45,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:05:45,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:05:45,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:05:45,634 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:05:45,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:05:45,635 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:05:45,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:05:45,635 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-10-17 17:05:45,636 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-10-17 17:05:45,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:05:45,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:05:45,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:05:45,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:05:45,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:05:45,637 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-10-17 17:05:45,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:05:45,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:05:45,645 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_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c86bd149cf8dcec56d0b62aefda03e866c4e374070f20ea19c317a4fa78bf8c1 [2022-10-17 17:05:45,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:05:45,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:05:45,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:05:45,969 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:05:45,970 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:05:45,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c [2022-10-17 17:05:46,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/data/a59f85ec2/14aff92400104bffae0b40ceb682a59c/FLAGa0dfab43f [2022-10-17 17:05:46,460 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:05:46,461 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/sv-benchmarks/c/termination-crafted/NestedRecursion_1a-1.c [2022-10-17 17:05:46,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/data/a59f85ec2/14aff92400104bffae0b40ceb682a59c/FLAGa0dfab43f [2022-10-17 17:05:46,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/data/a59f85ec2/14aff92400104bffae0b40ceb682a59c [2022-10-17 17:05:46,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:05:46,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:05:46,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:05:46,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:05:46,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:05:46,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:05:46" (1/1) ... [2022-10-17 17:05:46,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22add3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:46, skipping insertion in model container [2022-10-17 17:05:46,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:05:46" (1/1) ... [2022-10-17 17:05:46,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:05:46,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:05:47,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:05:47,160 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:05:47,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:05:47,204 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:05:47,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47 WrapperNode [2022-10-17 17:05:47,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:05:47,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:05:47,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:05:47,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:05:47,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,237 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2022-10-17 17:05:47,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:05:47,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:05:47,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:05:47,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:05:47,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:05:47,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:05:47,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:05:47,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:05:47,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-10-17 17:05:47,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/z3 [2022-10-17 17:05:47,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-10-17 17:05:47,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-10-17 17:05:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2022-10-17 17:05:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2022-10-17 17:05:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2022-10-17 17:05:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2022-10-17 17:05:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:05:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:05:47,423 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:05:47,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:05:47,601 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:05:47,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:05:47,618 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:05:47,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:05:47 BoogieIcfgContainer [2022-10-17 17:05:47,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:05:47,623 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-10-17 17:05:47,623 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-10-17 17:05:47,635 INFO L275 PluginConnector]: CodeCheck initialized [2022-10-17 17:05:47,636 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:05:47" (1/1) ... [2022-10-17 17:05:47,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:05:47,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-10-17 17:05:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 42 states and 47 transitions. [2022-10-17 17:05:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-10-17 17:05:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:05:47,742 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-10-17 17:05:47,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:05:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:47,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:05:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:47,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:05:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:05:47,933 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2022-10-17 17:05:47,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 17.10 05:05:47 ImpRootNode [2022-10-17 17:05:47,979 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-10-17 17:05:47,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:05:47,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:05:47,980 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:05:47,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:05:47" (3/4) ... [2022-10-17 17:05:47,983 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 17:05:48,018 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/witness.graphml [2022-10-17 17:05:48,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:05:48,019 INFO L158 Benchmark]: Toolchain (without parser) took 1154.59ms. Allocated memory is still 104.9MB. Free memory was 58.9MB in the beginning and 53.8MB in the end (delta: 5.1MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2022-10-17 17:05:48,020 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 104.9MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:05:48,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 337.84ms. Allocated memory is still 104.9MB. Free memory was 58.7MB in the beginning and 78.8MB in the end (delta: -20.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:05:48,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.71ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 77.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:05:48,023 INFO L158 Benchmark]: Boogie Preprocessor took 31.01ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 76.3MB in the end (delta: 882.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:05:48,024 INFO L158 Benchmark]: RCFGBuilder took 349.34ms. Allocated memory is still 104.9MB. Free memory was 76.3MB in the beginning and 65.4MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 17:05:48,025 INFO L158 Benchmark]: CodeCheck took 356.88ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 55.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:05:48,026 INFO L158 Benchmark]: Witness Printer took 38.12ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 53.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:05:48,032 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, 42 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 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, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L24] int x = __VERIFIER_nondet_int(); [L25] CALL rec2(x) VAL [\old(j)=2147483647] [L18] COND FALSE !(j <= 0) VAL [\old(j)=2147483647, j=2147483647] [L20] j+1 VAL [\old(j)=2147483647, j=2147483647] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 104.9MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 337.84ms. Allocated memory is still 104.9MB. Free memory was 58.7MB in the beginning and 78.8MB in the end (delta: -20.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.71ms. Allocated memory is still 104.9MB. Free memory was 78.8MB in the beginning and 77.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.01ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 76.3MB in the end (delta: 882.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 349.34ms. Allocated memory is still 104.9MB. Free memory was 76.3MB in the beginning and 65.4MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 356.88ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 55.2MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 38.12ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 53.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 17:05:48,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0810488-83b6-4a52-8b35-41de850b1b7b/bin/ukojak-92XMlrwhuB/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)