./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e07c452b8f05e09d4c441967530cedd94d7de761a5bf707d93a55d986c5a611 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:33:28,866 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:33:28,941 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 06:33:28,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:33:28,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:33:28,973 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:33:28,974 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:33:28,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:33:28,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:33:28,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:33:28,976 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:33:28,977 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:33:28,977 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:33:28,978 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:33:28,978 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:33:28,979 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:33:28,979 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:33:28,980 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:33:28,980 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:33:28,981 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:33:28,981 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:33:28,985 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:33:28,986 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:33:28,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:33:28,989 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:33:28,989 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:33:28,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:33:28,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:33:28,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:33:28,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:33:28,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:33:28,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:33:28,995 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 06:33:28,996 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 06:33:28,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:33:28,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:33:28,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:33:28,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:33:28,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:33:28,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:33:28,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:33:28,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:33:29,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:33:29,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:33:29,000 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:33:29,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:33:29,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:33:29,002 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:33:29,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:33:29,002 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e07c452b8f05e09d4c441967530cedd94d7de761a5bf707d93a55d986c5a611 [2024-11-09 06:33:29,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:33:29,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:33:29,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:33:29,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:33:29,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:33:29,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursive-simple/sum_non_eq-1.c Unable to find full path for "g++" [2024-11-09 06:33:31,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:33:31,655 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:33:31,655 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/sv-benchmarks/c/recursive-simple/sum_non_eq-1.c [2024-11-09 06:33:31,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/data/84143767b/b8b1abfd8eba4816b9727fa4ce7a1027/FLAGa35b42dbc [2024-11-09 06:33:32,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/data/84143767b/b8b1abfd8eba4816b9727fa4ce7a1027 [2024-11-09 06:33:32,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:33:32,036 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:33:32,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:33:32,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:33:32,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:33:32,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,048 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e514e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32, skipping insertion in model container [2024-11-09 06:33:32,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:33:32,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:33:32,356 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:33:32,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:33:32,412 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:33:32,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32 WrapperNode [2024-11-09 06:33:32,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:33:32,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:33:32,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:33:32,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:33:32,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,461 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2024-11-09 06:33:32,461 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:33:32,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:33:32,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:33:32,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:33:32,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:33:32,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:33:32,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:33:32,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:33:32,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (1/1) ... [2024-11-09 06:33:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:33:32,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:33:32,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:33:32,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:33:32,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:33:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:33:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:33:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-11-09 06:33:32,630 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-11-09 06:33:32,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:33:32,758 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:33:32,761 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:33:33,017 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-09 06:33:33,017 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:33:33,069 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:33:33,069 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 06:33:33,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:33:33 BoogieIcfgContainer [2024-11-09 06:33:33,070 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:33:33,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:33:33,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:33:33,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:33:33,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:33:32" (1/3) ... [2024-11-09 06:33:33,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee9c8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:33:33, skipping insertion in model container [2024-11-09 06:33:33,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:33:32" (2/3) ... [2024-11-09 06:33:33,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee9c8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:33:33, skipping insertion in model container [2024-11-09 06:33:33,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:33:33" (3/3) ... [2024-11-09 06:33:33,085 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq-1.c [2024-11-09 06:33:33,110 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:33:33,110 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-09 06:33:33,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:33:33,197 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@11312293, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:33:33,198 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 06:33:33,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:33:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 06:33:33,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:33:33,213 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 06:33:33,214 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-09 06:33:33,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:33:33,222 INFO L85 PathProgramCache]: Analyzing trace with hash 67616761, now seen corresponding path program 1 times [2024-11-09 06:33:33,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:33:33,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418569076] [2024-11-09 06:33:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:33:33,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:33:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:33:33,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 06:33:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 06:33:33,427 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 06:33:33,431 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 06:33:33,432 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location sumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-11-09 06:33:33,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-11-09 06:33:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-11-09 06:33:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-11-09 06:33:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-11-09 06:33:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location sumErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-11-09 06:33:33,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:33:33,445 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 06:33:33,473 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 06:33:33,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 06:33:33 BoogieIcfgContainer [2024-11-09 06:33:33,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 06:33:33,483 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 06:33:33,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 06:33:33,483 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 06:33:33,484 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:33:33" (3/4) ... [2024-11-09 06:33:33,485 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 06:33:33,540 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 06:33:33,541 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 06:33:33,542 INFO L158 Benchmark]: Toolchain (without parser) took 1506.39ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 72.1MB in the beginning and 123.4MB in the end (delta: -51.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:33:33,545 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:33:33,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.21ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 71.9MB in the beginning and 144.2MB in the end (delta: -72.3MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. [2024-11-09 06:33:33,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.63ms. Allocated memory is still 172.0MB. Free memory was 144.2MB in the beginning and 142.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:33:33,550 INFO L158 Benchmark]: Boogie Preprocessor took 23.33ms. Allocated memory is still 172.0MB. Free memory was 142.1MB in the beginning and 141.2MB in the end (delta: 896.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 06:33:33,551 INFO L158 Benchmark]: RCFGBuilder took 583.79ms. Allocated memory is still 172.0MB. Free memory was 141.2MB in the beginning and 140.0MB in the end (delta: 1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 06:33:33,551 INFO L158 Benchmark]: TraceAbstraction took 406.65ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 125.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 06:33:33,552 INFO L158 Benchmark]: Witness Printer took 57.95ms. Allocated memory is still 172.0MB. Free memory was 125.3MB in the beginning and 123.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 06:33:33,558 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.21ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 71.9MB in the beginning and 144.2MB in the end (delta: -72.3MB). Peak memory consumption was 14.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.63ms. Allocated memory is still 172.0MB. Free memory was 144.2MB in the beginning and 142.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.33ms. Allocated memory is still 172.0MB. Free memory was 142.1MB in the beginning and 141.2MB in the end (delta: 896.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 583.79ms. Allocated memory is still 172.0MB. Free memory was 141.2MB in the beginning and 140.0MB in the end (delta: 1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 406.65ms. Allocated memory is still 172.0MB. Free memory was 139.1MB in the beginning and 125.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 57.95ms. Allocated memory is still 172.0MB. Free memory was 125.3MB in the beginning and 123.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 10]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int a = __VERIFIER_nondet_int() ; [L16] int b = __VERIFIER_nondet_int(); [L17] CALL sum(a, b) VAL [\old(m)=0, \old(n)=-2147483648] [L7] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=-2147483648, m=0, n=-2147483648] [L10] n - 1 VAL [\old(m)=0, \old(n)=-2147483648, m=0] - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 10]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-09 06:33:33,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b668be5c-9505-4c5d-9082-a0cd00705d55/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)