./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL --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 ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:37:14,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:37:14,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-32bit-Kojak_Default.epf [2023-11-19 03:37:14,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:37:14,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:37:14,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:37:14,211 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:37:14,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:37:14,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:37:14,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:37:14,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:37:14,219 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:37:14,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:37:14,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:37:14,223 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:37:14,223 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:37:14,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:37:14,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:37:14,225 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:37:14,225 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:37:14,226 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:37:14,226 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:37:14,227 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:37:14,227 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:37:14,228 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:37:14,228 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:37:14,228 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:37:14,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:37:14,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:37:14,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:37:14,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:37:14,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:37:14,232 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:37:14,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:37:14,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:37:14,233 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_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceea5216a7b51ee21eab36f0e9b129c25f18193871fb4ca0aa52ef8740fc0ce8 [2023-11-19 03:37:14,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:37:14,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:37:14,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:37:14,641 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:37:14,641 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:37:14,643 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/recursive/gcd01-1.c [2023-11-19 03:37:17,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:37:17,939 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:37:17,940 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/sv-benchmarks/c/recursive/gcd01-1.c [2023-11-19 03:37:17,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/data/b32cb5afd/51f4d794775c4068bc06037fe3434225/FLAGabee23262 [2023-11-19 03:37:17,964 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/data/b32cb5afd/51f4d794775c4068bc06037fe3434225 [2023-11-19 03:37:17,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:37:17,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:37:17,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:37:17,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:37:17,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:37:17,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:37:17" (1/1) ... [2023-11-19 03:37:17,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec4e6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:17, skipping insertion in model container [2023-11-19 03:37:17,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:37:17" (1/1) ... [2023-11-19 03:37:17,999 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:37:18,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:37:18,182 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:37:18,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:37:18,209 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:37:18,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18 WrapperNode [2023-11-19 03:37:18,210 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:37:18,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:37:18,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:37:18,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:37:18,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,242 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-11-19 03:37:18,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:37:18,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:37:18,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:37:18,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:37:18,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,258 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:37:18,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:37:18,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:37:18,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:37:18,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:37:18,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:37:18,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:37:18,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:37:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:37:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2023-11-19 03:37:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2023-11-19 03:37:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:37:18,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:37:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:37:18,393 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:37:18,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:37:18,555 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:37:18,583 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:37:18,584 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:37:18,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:37:18 BoogieIcfgContainer [2023-11-19 03:37:18,590 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:37:18,591 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:37:18,591 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:37:18,606 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:37:18,606 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:37:18" (1/1) ... [2023-11-19 03:37:18,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:37:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 25 states and 31 transitions. [2023-11-19 03:37:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-11-19 03:37:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 03:37:18,684 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 24 states and 30 transitions. [2023-11-19 03:37:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-11-19 03:37:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 03:37:18,937 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 23 states and 29 transitions. [2023-11-19 03:37:19,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-19 03:37:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:37:19,023 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:19,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 29 states and 39 transitions. [2023-11-19 03:37:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-11-19 03:37:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 03:37:19,428 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 35 states and 50 transitions. [2023-11-19 03:37:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2023-11-19 03:37:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 03:37:20,281 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:20,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 42 states and 64 transitions. [2023-11-19 03:37:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 64 transitions. [2023-11-19 03:37:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 03:37:21,113 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:21,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 43 states and 66 transitions. [2023-11-19 03:37:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2023-11-19 03:37:21,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 03:37:21,525 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:21,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 44 states and 69 transitions. [2023-11-19 03:37:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 69 transitions. [2023-11-19 03:37:21,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 03:37:21,936 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:37:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:37:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:37:22,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:37:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:37:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 21 states and 27 transitions. [2023-11-19 03:37:22,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-11-19 03:37:22,567 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 03:37:22,567 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2023-11-19 03:37:22,576 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-19 03:37:22,647 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 03:37:22,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:37:22 ImpRootNode [2023-11-19 03:37:22,653 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:37:22,653 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:37:22,654 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:37:22,654 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:37:22,654 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:37:18" (3/4) ... [2023-11-19 03:37:22,661 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 03:37:22,667 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2023-11-19 03:37:22,676 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 03:37:22,677 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 03:37:22,677 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 03:37:22,678 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 03:37:22,767 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:37:22,768 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/witness.yml [2023-11-19 03:37:22,768 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:37:22,769 INFO L158 Benchmark]: Toolchain (without parser) took 4800.92ms. Allocated memory is still 146.8MB. Free memory was 114.5MB in the beginning and 80.9MB in the end (delta: 33.6MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-11-19 03:37:22,769 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:37:22,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.73ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 104.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:37:22,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.41ms. Allocated memory is still 146.8MB. Free memory was 103.8MB in the beginning and 102.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:37:22,771 INFO L158 Benchmark]: Boogie Preprocessor took 19.22ms. Allocated memory is still 146.8MB. Free memory was 102.4MB in the beginning and 101.7MB in the end (delta: 758.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:37:22,771 INFO L158 Benchmark]: RCFGBuilder took 326.30ms. Allocated memory is still 146.8MB. Free memory was 101.2MB in the beginning and 89.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:37:22,772 INFO L158 Benchmark]: CodeCheck took 4061.90ms. Allocated memory is still 146.8MB. Free memory was 89.4MB in the beginning and 86.0MB in the end (delta: 3.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-11-19 03:37:22,772 INFO L158 Benchmark]: Witness Printer took 114.79ms. Allocated memory is still 146.8MB. Free memory was 86.0MB in the beginning and 80.9MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:37:22,775 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, 25 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 354 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 174 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 808 IncrementalHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 174 mSDtfsCounter, 808 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 919 GetRequests, 788 SyntacticMatches, 49 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2243 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 12/20 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 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.73ms. Allocated memory is still 146.8MB. Free memory was 114.3MB in the beginning and 104.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.41ms. Allocated memory is still 146.8MB. Free memory was 103.8MB in the beginning and 102.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.22ms. Allocated memory is still 146.8MB. Free memory was 102.4MB in the beginning and 101.7MB in the end (delta: 758.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 326.30ms. Allocated memory is still 146.8MB. Free memory was 101.2MB in the beginning and 89.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 4061.90ms. Allocated memory is still 146.8MB. Free memory was 89.4MB in the beginning and 86.0MB in the end (delta: 3.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 114.79ms. Allocated memory is still 146.8MB. Free memory was 86.0MB in the beginning and 80.9MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-19 03:37:22,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac985d2-3c84-444f-9243-a9b4c85d37a2/bin/ukojak-verify-G8NBE6pJGL/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 Result: TRUE