./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Ackermann-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/Ackermann-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2 --witnessprinter.witness.filename witness --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 bfd720405bcb220888936a72c0a56a1f9623ccca41ba023f90ec05bee86a71e5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 18:45:41,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 18:45:41,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-21 18:45:41,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 18:45:41,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-21 18:45:41,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 18:45:41,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 18:45:41,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-21 18:45:41,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 18:45:41,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 18:45:41,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 18:45:41,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 18:45:41,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 18:45:41,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 18:45:41,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 18:45:41,345 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 18:45:41,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 18:45:41,346 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 18:45:41,347 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 18:45:41,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 18:45:41,348 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 18:45:41,349 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-21 18:45:41,350 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-21 18:45:41,350 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-21 18:45:41,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 18:45:41,351 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:45:41,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 18:45:41,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 18:45:41,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 18:45:41,354 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-21 18:45:41,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 18:45:41,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 18:45:41,356 INFO L153 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_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfd720405bcb220888936a72c0a56a1f9623ccca41ba023f90ec05bee86a71e5 [2023-11-21 18:45:41,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 18:45:41,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 18:45:41,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 18:45:41,770 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 18:45:41,771 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 18:45:41,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/../../sv-benchmarks/c/termination-crafted/Ackermann-1.c [2023-11-21 18:45:45,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 18:45:45,247 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 18:45:45,248 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/sv-benchmarks/c/termination-crafted/Ackermann-1.c [2023-11-21 18:45:45,255 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/data/5a956a315/0f5b28f205634de6b9ed3930f7e18146/FLAG0c32d8698 [2023-11-21 18:45:45,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/data/5a956a315/0f5b28f205634de6b9ed3930f7e18146 [2023-11-21 18:45:45,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 18:45:45,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 18:45:45,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 18:45:45,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 18:45:45,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 18:45:45,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1d4472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45, skipping insertion in model container [2023-11-21 18:45:45,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 18:45:45,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:45:45,532 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 18:45:45,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 18:45:45,558 INFO L206 MainTranslator]: Completed translation [2023-11-21 18:45:45,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45 WrapperNode [2023-11-21 18:45:45,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 18:45:45,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 18:45:45,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 18:45:45,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 18:45:45,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,600 INFO L138 Inliner]: procedures = 5, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2023-11-21 18:45:45,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 18:45:45,602 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 18:45:45,602 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 18:45:45,602 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 18:45:45,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,626 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,628 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 18:45:45,629 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 18:45:45,629 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 18:45:45,629 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 18:45:45,630 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-21 18:45:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/z3 [2023-11-21 18:45:45,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-21 18:45:45,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-21 18:45:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure Ack [2023-11-21 18:45:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure Ack [2023-11-21 18:45:45,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 18:45:45,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 18:45:45,763 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 18:45:45,765 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 18:45:45,931 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 18:45:45,957 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 18:45:45,957 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 18:45:45,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:45:45 BoogieIcfgContainer [2023-11-21 18:45:45,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 18:45:45,960 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-21 18:45:45,960 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-21 18:45:45,968 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-21 18:45:45,968 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:45:45" (1/1) ... [2023-11-21 18:45:45,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 18:45:46,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 33 states and 38 transitions. [2023-11-21 18:45:46,039 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2023-11-21 18:45:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-21 18:45:46,041 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:45:46,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:45:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 18:45:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 18:45:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-21 18:45:46,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 36 states and 44 transitions. [2023-11-21 18:45:46,382 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-11-21 18:45:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 18:45:46,383 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-21 18:45:46,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 18:45:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:45:46,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:45:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:45:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:45:46,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 18:45:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 18:45:46,509 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 2 iterations. [2023-11-21 18:45:46,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 21.11 06:45:46 ImpRootNode [2023-11-21 18:45:46,536 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-21 18:45:46,537 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 18:45:46,537 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 18:45:46,538 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 18:45:46,538 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 06:45:45" (3/4) ... [2023-11-21 18:45:46,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 18:45:46,577 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/witness.graphml [2023-11-21 18:45:46,578 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 18:45:46,579 INFO L158 Benchmark]: Toolchain (without parser) took 1304.11ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 72.5MB in the beginning and 106.9MB in the end (delta: -34.5MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2023-11-21 18:45:46,579 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 132.1MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:45:46,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.30ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 72.3MB in the beginning and 137.3MB in the end (delta: -65.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-11-21 18:45:46,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.32ms. Allocated memory is still 167.8MB. Free memory was 137.2MB in the beginning and 139.2MB in the end (delta: -2.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2023-11-21 18:45:46,582 INFO L158 Benchmark]: Boogie Preprocessor took 26.66ms. Allocated memory is still 167.8MB. Free memory was 139.2MB in the beginning and 138.4MB in the end (delta: 854.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 18:45:46,583 INFO L158 Benchmark]: RCFGBuilder took 330.44ms. Allocated memory is still 167.8MB. Free memory was 138.4MB in the beginning and 127.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 18:45:46,584 INFO L158 Benchmark]: CodeCheck took 576.43ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 109.0MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 18:45:46,585 INFO L158 Benchmark]: Witness Printer took 40.56ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 18:45:46,590 INFO L338 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, 33 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 10 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 10]: integer overflow possible integer overflow possible We found a FailurePath: [L16] int x = __VERIFIER_nondet_int(); [L17] int y = __VERIFIER_nondet_int(); [L18] COND FALSE !(x < 0 || y < 0) VAL [x=0, y=2147483647] [L21] CALL Ack(x, y) VAL [\old(m)=0, \old(n)=2147483647] [L10] COND TRUE m == 0 VAL [\old(m)=0, \old(n)=2147483647, m=0, n=2147483647] [L10] n+1 VAL [\old(m)=0, \old(n)=2147483647, m=0, n=2147483647] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 132.1MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.30ms. Allocated memory was 132.1MB in the beginning and 167.8MB in the end (delta: 35.7MB). Free memory was 72.3MB in the beginning and 137.3MB in the end (delta: -65.0MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.32ms. Allocated memory is still 167.8MB. Free memory was 137.2MB in the beginning and 139.2MB in the end (delta: -2.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.66ms. Allocated memory is still 167.8MB. Free memory was 139.2MB in the beginning and 138.4MB in the end (delta: 854.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.44ms. Allocated memory is still 167.8MB. Free memory was 138.4MB in the beginning and 127.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 576.43ms. Allocated memory is still 167.8MB. Free memory was 126.7MB in the beginning and 109.0MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 40.56ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 106.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-21 18:45:46,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ddc9ae4-c9f1-4b82-954d-7155c50bed88/bin/ukojak-verify-i0I2FZA1j2/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)