./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:36,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:36,454 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-27 19:50:36,460 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:36,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:36,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:36,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:36,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:36,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:36,495 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:36,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:36,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:36,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:36,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:36,497 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:36,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:36,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:36,498 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:36,498 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:36,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:36,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:36,499 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:36,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:36,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:36,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:36,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:36,500 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:36,500 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:36,501 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:36,501 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 -> d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c [2024-11-27 19:50:36,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:36,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:36,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:36,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:36,843 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:36,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2024-11-27 19:50:39,760 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/cc3d7cd62/831f7fb5202d481fbb4a5127807e7833/FLAG8c795323f [2024-11-27 19:50:40,268 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:40,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2024-11-27 19:50:40,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/cc3d7cd62/831f7fb5202d481fbb4a5127807e7833/FLAG8c795323f [2024-11-27 19:50:40,326 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/cc3d7cd62/831f7fb5202d481fbb4a5127807e7833 [2024-11-27 19:50:40,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:40,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:40,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:40,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:40,338 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:40,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:40" (1/1) ... [2024-11-27 19:50:40,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce91d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:40, skipping insertion in model container [2024-11-27 19:50:40,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:40" (1/1) ... [2024-11-27 19:50:40,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:41,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:41,482 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:41,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:41,737 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:41,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41 WrapperNode [2024-11-27 19:50:41,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:41,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:41,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:41,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:41,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,765 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,786 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-11-27 19:50:41,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:41,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:41,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:41,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:41,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,820 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-27 19:50:41,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,827 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:41,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:41,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:41,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:41,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (1/1) ... [2024-11-27 19:50:41,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:41,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:41,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:41,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:41,910 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-27 19:50:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-27 19:50:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:41,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:42,074 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:42,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:42,214 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:42,214 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:42,224 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:42,224 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 19:50:42,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:42 BoogieIcfgContainer [2024-11-27 19:50:42,224 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:42,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:42,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:42,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:42,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:40" (1/3) ... [2024-11-27 19:50:42,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4de0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:42, skipping insertion in model container [2024-11-27 19:50:42,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:41" (2/3) ... [2024-11-27 19:50:42,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4de0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:42, skipping insertion in model container [2024-11-27 19:50:42,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:42" (3/3) ... [2024-11-27 19:50:42,234 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2024-11-27 19:50:42,249 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:42,251 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-27 19:50:42,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:42,321 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=PETRI_NET, 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;@959322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:42,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 19:50:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 19:50:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 19:50:42,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:42,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:42,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-27 19:50:42,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:42,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2024-11-27 19:50:42,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:42,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677018485] [2024-11-27 19:50:42,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:42,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:50:42,529 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:50:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:50:42,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 19:50:42,600 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 19:50:42,602 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-27 19:50:42,604 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-27 19:50:42,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:42,612 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-27 19:50:42,642 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 19:50:42,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 07:50:42 BoogieIcfgContainer [2024-11-27 19:50:42,648 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 19:50:42,649 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 19:50:42,649 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 19:50:42,651 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 19:50:42,651 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:42" (3/4) ... [2024-11-27 19:50:42,654 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 19:50:42,655 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 19:50:42,656 INFO L158 Benchmark]: Toolchain (without parser) took 2326.18ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 47.9MB in the end (delta: 41.4MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2024-11-27 19:50:42,656 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:42,657 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1407.06ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 81.2MB in the end (delta: 7.8MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2024-11-27 19:50:42,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.38ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 78.5MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 19:50:42,657 INFO L158 Benchmark]: Boogie Preprocessor took 47.39ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 76.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:42,658 INFO L158 Benchmark]: RCFGBuilder took 389.06ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 65.2MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 19:50:42,660 INFO L158 Benchmark]: TraceAbstraction took 421.98ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 48.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:50:42,660 INFO L158 Benchmark]: Witness Printer took 6.28ms. Allocated memory is still 117.4MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:42,662 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1407.06ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 81.2MB in the end (delta: 7.8MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.38ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 78.5MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.39ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 76.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 389.06ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 65.2MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 421.98ms. Allocated memory is still 117.4MB. Free memory was 64.7MB in the beginning and 48.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.28ms. Allocated memory is still 117.4MB. Free memory is still 47.9MB. There was no memory consumed. 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 - UnprovableResult [Line: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556, overapproximation of fgets at line 1554. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1572] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL CWE191_Integer_Underflow__int_fgets_postdec_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1564] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1564]: 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, 2 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, 11 NumberOfCodeBlocks, 11 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 19:50:42,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:45,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:45,684 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-27 19:50:45,698 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:45,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:45,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-27 19:50:45,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:45,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:45,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:45,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:45,748 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:45,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:45,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:45,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:45,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:45,750 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:45,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:45,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:45,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:45,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:45,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:45,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:45,753 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:45,754 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:45,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:45,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:45,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:45,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:45,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:45,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:45,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:45,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:45,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:45,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:45,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:45,756 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:45,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:45,757 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 19:50:45,757 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 19:50:45,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:45,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:45,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:45,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:45,758 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 -> d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c [2024-11-27 19:50:46,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:46,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:46,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:46,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:46,127 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:46,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2024-11-27 19:50:49,383 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/9f6c62627/60cfefcd0c924a51ac88bb3b3c456043/FLAG886a9d5d3 [2024-11-27 19:50:49,958 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:49,959 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2024-11-27 19:50:49,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/9f6c62627/60cfefcd0c924a51ac88bb3b3c456043/FLAG886a9d5d3 [2024-11-27 19:50:50,003 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/data/9f6c62627/60cfefcd0c924a51ac88bb3b3c456043 [2024-11-27 19:50:50,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:50,009 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:50,012 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:50,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:50,017 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:50,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:50" (1/1) ... [2024-11-27 19:50:50,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@198dfac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:50, skipping insertion in model container [2024-11-27 19:50:50,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:50" (1/1) ... [2024-11-27 19:50:50,074 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:51,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:51,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:51,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:51,356 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:51,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51 WrapperNode [2024-11-27 19:50:51,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:51,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:51,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:51,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:51,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,407 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2024-11-27 19:50:51,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:51,408 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:51,408 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:51,408 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:51,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,427 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,452 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-11-27 19:50:51,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,469 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,484 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:51,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:51,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:51,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:51,493 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (1/1) ... [2024-11-27 19:50:51,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:51,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:51,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:51,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-27 19:50:51,584 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-27 19:50:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 19:50:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:51,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:51,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:51,789 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:51,792 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:51,950 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:51,950 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:51,963 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:51,963 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 19:50:51,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:51 BoogieIcfgContainer [2024-11-27 19:50:51,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:51,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:51,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:51,972 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:51,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:50" (1/3) ... [2024-11-27 19:50:51,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50347d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:51, skipping insertion in model container [2024-11-27 19:50:51,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:51" (2/3) ... [2024-11-27 19:50:51,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50347d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:51, skipping insertion in model container [2024-11-27 19:50:51,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:51" (3/3) ... [2024-11-27 19:50:51,977 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2024-11-27 19:50:51,994 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:51,995 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-27 19:50:52,056 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:52,072 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=PETRI_NET, 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;@41a81444, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:52,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 19:50:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 19:50:52,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 19:50:52,084 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:52,085 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:52,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-27 19:50:52,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2024-11-27 19:50:52,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 19:50:52,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419540483] [2024-11-27 19:50:52,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:52,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:52,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:52,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:52,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:50:52,319 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 19:50:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 19:50:52,417 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-27 19:50:52,419 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 19:50:52,421 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-27 19:50:52,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-27 19:50:52,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:50:52,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:52,631 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-27 19:50:52,660 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 19:50:52,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 07:50:52 BoogieIcfgContainer [2024-11-27 19:50:52,667 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 19:50:52,668 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 19:50:52,669 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 19:50:52,669 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 19:50:52,670 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:51" (3/4) ... [2024-11-27 19:50:52,673 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 19:50:52,674 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 19:50:52,675 INFO L158 Benchmark]: Toolchain (without parser) took 2666.13ms. Allocated memory is still 117.4MB. Free memory was 92.2MB in the beginning and 83.1MB in the end (delta: 9.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-11-27 19:50:52,675 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:52,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1344.92ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 80.3MB in the end (delta: 11.6MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2024-11-27 19:50:52,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.77ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 77.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:52,676 INFO L158 Benchmark]: Boogie Preprocessor took 83.26ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 75.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:52,677 INFO L158 Benchmark]: RCFGBuilder took 472.75ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 62.2MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 19:50:52,677 INFO L158 Benchmark]: TraceAbstraction took 699.77ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 83.7MB in the end (delta: -22.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2024-11-27 19:50:52,678 INFO L158 Benchmark]: Witness Printer took 5.44ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 83.1MB in the end (delta: 616.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 19:50:52,680 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1344.92ms. Allocated memory is still 117.4MB. Free memory was 91.9MB in the beginning and 80.3MB in the end (delta: 11.6MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.77ms. Allocated memory is still 117.4MB. Free memory was 80.3MB in the beginning and 77.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 83.26ms. Allocated memory is still 117.4MB. Free memory was 77.6MB in the beginning and 75.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 472.75ms. Allocated memory is still 117.4MB. Free memory was 75.6MB in the beginning and 62.2MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 699.77ms. Allocated memory is still 117.4MB. Free memory was 61.5MB in the beginning and 83.7MB in the end (delta: -22.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 5.44ms. Allocated memory is still 117.4MB. Free memory was 83.7MB in the beginning and 83.1MB in the end (delta: 616.5kB). There was no memory consumed. 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 - UnprovableResult [Line: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556, overapproximation of fgets at line 1554. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1572] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL CWE191_Integer_Underflow__int_fgets_postdec_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] data = atoi(inputBuffer) [L1564] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1564]: 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, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 11 NumberOfCodeBlocks, 11 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 19:50:52,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80eb0db1-ee1a-4bb9-9317-35483efcb4bc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample