./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 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_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV --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 002ffbd09e057f56028aff15fe1fea8f5a73210903f4d60a4a822560ee8c3510 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-11 23:57:10,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-11 23:57:10,915 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-11 23:57:10,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-11 23:57:10,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-11 23:57:10,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-11 23:57:10,974 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-11 23:57:10,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-11 23:57:10,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-11 23:57:10,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-11 23:57:10,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-11 23:57:10,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-11 23:57:10,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-11 23:57:10,987 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-11 23:57:10,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-11 23:57:10,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-11 23:57:10,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-11 23:57:10,989 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-11 23:57:10,989 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-11 23:57:10,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-11 23:57:10,991 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-11 23:57:10,991 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-11 23:57:10,992 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-11 23:57:10,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-11 23:57:10,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:57:10,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-11 23:57:10,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-11 23:57:10,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-11 23:57:10,995 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-11 23:57:10,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-11 23:57:10,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-11 23:57:10,997 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_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 002ffbd09e057f56028aff15fe1fea8f5a73210903f4d60a4a822560ee8c3510 [2023-11-11 23:57:11,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-11 23:57:11,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-11 23:57:11,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-11 23:57:11,323 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-11 23:57:11,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-11 23:57:11,325 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c [2023-11-11 23:57:14,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-11 23:57:14,817 INFO L384 CDTParser]: Found 1 translation units. [2023-11-11 23:57:14,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy1.c [2023-11-11 23:57:14,827 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/data/bbd45802f/b35cffe50d7b4c19abdf1da63566063e/FLAGa7bd8117e [2023-11-11 23:57:14,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/data/bbd45802f/b35cffe50d7b4c19abdf1da63566063e [2023-11-11 23:57:14,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-11 23:57:14,858 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-11 23:57:14,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-11 23:57:14,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-11 23:57:14,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-11 23:57:14,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:57:14" (1/1) ... [2023-11-11 23:57:14,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fad9487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:14, skipping insertion in model container [2023-11-11 23:57:14,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 11:57:14" (1/1) ... [2023-11-11 23:57:14,901 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-11 23:57:15,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:57:15,125 INFO L202 MainTranslator]: Completed pre-run [2023-11-11 23:57:15,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-11 23:57:15,161 INFO L206 MainTranslator]: Completed translation [2023-11-11 23:57:15,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15 WrapperNode [2023-11-11 23:57:15,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-11 23:57:15,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-11 23:57:15,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-11 23:57:15,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-11 23:57:15,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,202 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-11 23:57:15,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-11 23:57:15,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-11 23:57:15,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-11 23:57:15,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-11 23:57:15,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-11 23:57:15,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-11 23:57:15,237 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-11 23:57:15,237 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-11 23:57:15,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-11 23:57:15,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/z3 [2023-11-11 23:57:15,281 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-11 23:57:15,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-11 23:57:15,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-11 23:57:15,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-11 23:57:15,403 INFO L236 CfgBuilder]: Building ICFG [2023-11-11 23:57:15,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-11 23:57:15,518 INFO L277 CfgBuilder]: Performing block encoding [2023-11-11 23:57:15,542 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-11 23:57:15,542 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-11 23:57:15,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:15 BoogieIcfgContainer [2023-11-11 23:57:15,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-11 23:57:15,547 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-11 23:57:15,547 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-11 23:57:15,559 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-11 23:57:15,559 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:15" (1/1) ... [2023-11-11 23:57:15,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-11 23:57:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2023-11-11 23:57:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-11-11 23:57:15,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-11 23:57:15,634 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:15,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:15,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2023-11-11 23:57:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-11-11 23:57:15,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-11 23:57:15,848 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:15,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2023-11-11 23:57:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-11-11 23:57:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-11 23:57:15,929 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2023-11-11 23:57:16,063 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2023-11-11 23:57:16,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-11 23:57:16,066 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:16,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2023-11-11 23:57:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-11-11 23:57:16,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-11 23:57:16,169 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:16,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:16,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 23 states and 30 transitions. [2023-11-11 23:57:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-11-11 23:57:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-11 23:57:16,355 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:16,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:16,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2023-11-11 23:57:16,691 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2023-11-11 23:57:16,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-11 23:57:16,692 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:16,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 16 states and 18 transitions. [2023-11-11 23:57:16,772 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-11 23:57:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-11 23:57:16,772 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-11 23:57:16,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-11-11 23:57:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-11 23:57:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-11 23:57:16,893 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-11 23:57:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2023-11-11 23:57:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-11 23:57:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-11 23:57:17,157 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-11 23:57:17,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-11 23:57:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-11 23:57:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-11 23:57:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-11 23:57:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2023-11-11 23:57:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2023-11-11 23:57:17,203 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-11 23:57:17,203 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 11 iterations. [2023-11-11 23:57:17,212 INFO L753 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-11 23:57:17,311 INFO L560 CodeCheckObserver]: Invariant with dag size 3 [2023-11-11 23:57:17,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 11.11 11:57:17 ImpRootNode [2023-11-11 23:57:17,318 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-11 23:57:17,319 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-11 23:57:17,319 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-11 23:57:17,319 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-11 23:57:17,320 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 11:57:15" (3/4) ... [2023-11-11 23:57:17,322 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-11 23:57:17,329 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-11 23:57:17,329 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-11 23:57:17,329 INFO L944 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-11 23:57:17,413 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/witness.graphml [2023-11-11 23:57:17,413 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/witness.yml [2023-11-11 23:57:17,413 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-11 23:57:17,414 INFO L158 Benchmark]: Toolchain (without parser) took 2555.92ms. Allocated memory is still 192.9MB. Free memory was 145.7MB in the beginning and 111.3MB in the end (delta: 34.4MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2023-11-11 23:57:17,414 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:57:17,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.88ms. Allocated memory is still 192.9MB. Free memory was 145.7MB in the beginning and 136.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-11 23:57:17,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.69ms. Allocated memory is still 192.9MB. Free memory was 136.0MB in the beginning and 134.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-11 23:57:17,416 INFO L158 Benchmark]: Boogie Preprocessor took 32.15ms. Allocated memory is still 192.9MB. Free memory was 134.6MB in the beginning and 133.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-11 23:57:17,416 INFO L158 Benchmark]: RCFGBuilder took 309.16ms. Allocated memory is still 192.9MB. Free memory was 133.5MB in the beginning and 124.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-11 23:57:17,417 INFO L158 Benchmark]: CodeCheck took 1771.86ms. Allocated memory is still 192.9MB. Free memory was 123.7MB in the beginning and 115.5MB in the end (delta: 8.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2023-11-11 23:57:17,417 INFO L158 Benchmark]: Witness Printer took 94.15ms. Allocated memory is still 192.9MB. Free memory was 115.5MB in the beginning and 111.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-11 23:57:17,420 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, 12 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 11, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 213 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 40 mSDtfsCounter, 646 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 525 SyntacticMatches, 19 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 18/18 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: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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: 14]: Loop Invariant Derived loop invariant: (0 <= x) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 134.2MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.88ms. Allocated memory is still 192.9MB. Free memory was 145.7MB in the beginning and 136.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.69ms. Allocated memory is still 192.9MB. Free memory was 136.0MB in the beginning and 134.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.15ms. Allocated memory is still 192.9MB. Free memory was 134.6MB in the beginning and 133.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.16ms. Allocated memory is still 192.9MB. Free memory was 133.5MB in the beginning and 124.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1771.86ms. Allocated memory is still 192.9MB. Free memory was 123.7MB in the beginning and 115.5MB in the end (delta: 8.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Witness Printer took 94.15ms. Allocated memory is still 192.9MB. Free memory was 115.5MB in the beginning and 111.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-11 23:57:17,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f879e2db-02ac-4f2a-a417-2a09f3d1bee8/bin/ukojak-verify-0OAaufAVZV/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