./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-nla/dijkstra5-both-nt.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-nla/dijkstra5-both-nt.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC --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 32bit --witnessprinter.graph.data.programhash 1311e92b010f06e52be84ec52b75ec93594134b7a325e76c2963ae3ac9ab2bc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:03:58,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:03:58,229 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-23 20:03:58,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:03:58,237 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-23 20:03:58,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:03:58,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:03:58,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-23 20:03:58,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 20:03:58,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 20:03:58,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:03:58,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:03:58,282 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:03:58,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:03:58,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:03:58,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:03:58,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:03:58,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:03:58,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:03:58,285 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 20:03:58,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:03:58,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:03:58,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:03:58,288 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:03:58,288 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-23 20:03:58,289 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-23 20:03:58,289 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-23 20:03:58,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:03:58,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:03:58,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:03:58,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:03:58,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:03:58,292 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-23 20:03:58,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:03:58,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:03:58,293 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_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1311e92b010f06e52be84ec52b75ec93594134b7a325e76c2963ae3ac9ab2bc2 [2023-11-23 20:03:58,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:03:58,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:03:58,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:03:58,639 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:03:58,639 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:03:58,641 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/../../sv-benchmarks/c/termination-nla/dijkstra5-both-nt.c [2023-11-23 20:04:01,711 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:04:01,933 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:04:01,933 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/sv-benchmarks/c/termination-nla/dijkstra5-both-nt.c [2023-11-23 20:04:01,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/data/a12e1b23b/2b19008d7978462a9f9c426cf07eeed4/FLAG5ae0acbd3 [2023-11-23 20:04:01,959 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/data/a12e1b23b/2b19008d7978462a9f9c426cf07eeed4 [2023-11-23 20:04:01,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:04:01,963 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:04:01,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:04:01,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:04:01,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:04:01,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:01" (1/1) ... [2023-11-23 20:04:01,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3249db42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:01, skipping insertion in model container [2023-11-23 20:04:01,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:01" (1/1) ... [2023-11-23 20:04:01,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:04:02,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:04:02,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:04:02,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:04:02,253 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:04:02,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02 WrapperNode [2023-11-23 20:04:02,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:04:02,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:04:02,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:04:02,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:04:02,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,268 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,299 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2023-11-23 20:04:02,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:04:02,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:04:02,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:04:02,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:04:02,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,322 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:04:02,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:04:02,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:04:02,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:04:02,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:02" (1/1) ... [2023-11-23 20:04:02,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-23 20:04:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/z3 [2023-11-23 20:04:02,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-23 20:04:02,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-23 20:04:02,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:04:02,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:04:02,460 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:04:02,463 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:04:03,164 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:04:03,191 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:04:03,191 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:04:03,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:03 BoogieIcfgContainer [2023-11-23 20:04:03,193 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:04:03,195 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-23 20:04:03,195 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-23 20:04:03,207 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-23 20:04:03,207 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:03" (1/1) ... [2023-11-23 20:04:03,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:04:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 128 states and 133 transitions. [2023-11-23 20:04:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2023-11-23 20:04:03,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 20:04:03,282 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:03,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:03,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 127 states and 131 transitions. [2023-11-23 20:04:03,445 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 131 transitions. [2023-11-23 20:04:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 20:04:03,445 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:03,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:03,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:03,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 129 states and 136 transitions. [2023-11-23 20:04:03,549 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 136 transitions. [2023-11-23 20:04:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 20:04:03,549 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:03,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:03,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 132 states and 143 transitions. [2023-11-23 20:04:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2023-11-23 20:04:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 20:04:03,666 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:03,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:03,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:03,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 133 states and 144 transitions. [2023-11-23 20:04:03,716 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 144 transitions. [2023-11-23 20:04:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 20:04:03,717 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:03,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:04:03,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 136 states and 149 transitions. [2023-11-23 20:04:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 149 transitions. [2023-11-23 20:04:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 20:04:03,873 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:03,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:03,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 20:04:03,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 140 states and 154 transitions. [2023-11-23 20:04:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2023-11-23 20:04:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 20:04:04,037 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:04,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:04,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 142 states and 156 transitions. [2023-11-23 20:04:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2023-11-23 20:04:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 20:04:04,134 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:04,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:04,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 143 states and 157 transitions. [2023-11-23 20:04:04,207 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2023-11-23 20:04:04,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 20:04:04,208 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:04,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:04,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 144 states and 158 transitions. [2023-11-23 20:04:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2023-11-23 20:04:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 20:04:04,270 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:04,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 20:04:04,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 145 states and 159 transitions. [2023-11-23 20:04:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2023-11-23 20:04:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 20:04:04,353 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:04,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:04:04,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 152 states and 166 transitions. [2023-11-23 20:04:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2023-11-23 20:04:04,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 20:04:04,582 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:04:04,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 20:04:04,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:04:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:04:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-23 20:04:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 153 states and 167 transitions. [2023-11-23 20:04:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 167 transitions. [2023-11-23 20:04:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 20:04:04,706 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-23 20:04:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:04:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:04,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:04:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:04:04,738 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 13 iterations. [2023-11-23 20:04:04,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 08:04:04 ImpRootNode [2023-11-23 20:04:04,767 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-23 20:04:04,768 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:04:04,768 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:04:04,768 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:04:04,769 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:03" (3/4) ... [2023-11-23 20:04:04,770 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 20:04:04,811 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/witness.graphml [2023-11-23 20:04:04,812 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:04:04,813 INFO L158 Benchmark]: Toolchain (without parser) took 2849.09ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 72.2MB in the beginning and 82.8MB in the end (delta: -10.6MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,813 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:04:04,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.03ms. Allocated memory is still 115.3MB. Free memory was 72.2MB in the beginning and 62.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.94ms. Allocated memory is still 115.3MB. Free memory was 62.0MB in the beginning and 60.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,815 INFO L158 Benchmark]: Boogie Preprocessor took 27.39ms. Allocated memory is still 115.3MB. Free memory was 60.1MB in the beginning and 58.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,816 INFO L158 Benchmark]: RCFGBuilder took 865.20ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 58.9MB in the beginning and 110.5MB in the end (delta: -51.6MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,816 INFO L158 Benchmark]: CodeCheck took 1572.64ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 84.9MB in the end (delta: 24.7MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,817 INFO L158 Benchmark]: Witness Printer took 44.00ms. Allocated memory is still 140.5MB. Free memory was 83.9MB in the beginning and 82.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:04:04,820 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 1 procedures, 128 locations, 60 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 13, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 468 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 311 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 87 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 822 IncrementalHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 87 mSolverCounterUnsat, 136 mSDtfsCounter, 822 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 817 GetRequests, 766 SyntacticMatches, 33 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 366 SizeOfPredicates, 0 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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: 41]: integer overflow possible integer overflow possible We found a FailurePath: [L22] int n, p, q, r, h; [L24] n = __VERIFIER_nondet_int() [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L40] COND TRUE q > n VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] EXPR h * h VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] EXPR h * h * p VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] EXPR 4 * h VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] EXPR 4 * h * n VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] EXPR 4 * h * n * q VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] h * h * p - 4 * h * n * q VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] [L41] 4 * n VAL [h=0, n=-536870913, p=0, q=1, r=-536870913] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.03ms. Allocated memory is still 115.3MB. Free memory was 72.2MB in the beginning and 62.0MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.94ms. Allocated memory is still 115.3MB. Free memory was 62.0MB in the beginning and 60.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.39ms. Allocated memory is still 115.3MB. Free memory was 60.1MB in the beginning and 58.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 865.20ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 58.9MB in the beginning and 110.5MB in the end (delta: -51.6MB). Peak memory consumption was 27.7MB. Max. memory is 16.1GB. * CodeCheck took 1572.64ms. Allocated memory is still 140.5MB. Free memory was 109.6MB in the beginning and 84.9MB in the end (delta: 24.7MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. * Witness Printer took 44.00ms. Allocated memory is still 140.5MB. Free memory was 83.9MB in the beginning and 82.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2023-11-23 20:04:04,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28657910-0aab-4e7d-88ac-0f24a2712b08/bin/ukojak-verify-1t5iHCbJaC/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)