./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_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_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1 --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 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:02:17,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:02:17,654 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-12-01 23:02:17,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:02:17,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:02:17,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:02:17,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:02:17,678 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:02:17,679 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:02:17,679 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:02:17,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:02:17,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:02:17,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:02:17,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:02:17,679 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:02:17,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:02:17,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:02:17,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:02:17,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:02:17,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:02:17,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:02:17,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:02:17,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:02:17,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:02:17,682 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_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1 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 -> 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a [2024-12-01 23:02:17,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:02:17,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:02:17,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:02:17,918 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:02:17,919 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:02:17,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2024-12-01 23:02:20,584 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/2865457e1/aae004be9888443fab07d4c6c4444886/FLAG96a92deeb [2024-12-01 23:02:20,859 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:02:20,859 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2024-12-01 23:02:20,877 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/2865457e1/aae004be9888443fab07d4c6c4444886/FLAG96a92deeb [2024-12-01 23:02:20,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/2865457e1/aae004be9888443fab07d4c6c4444886 [2024-12-01 23:02:20,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:02:20,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:02:20,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:02:20,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:02:20,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:02:20,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:02:20" (1/1) ... [2024-12-01 23:02:20,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c62671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:20, skipping insertion in model container [2024-12-01 23:02:20,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:02:20" (1/1) ... [2024-12-01 23:02:20,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:02:21,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:02:21,575 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:02:21,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:02:21,752 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:02:21,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21 WrapperNode [2024-12-01 23:02:21,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:02:21,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:02:21,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:02:21,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:02:21,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,788 INFO L138 Inliner]: procedures = 499, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2024-12-01 23:02:21,789 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:02:21,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:02:21,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:02:21,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:02:21,798 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,800 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,813 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]. [2024-12-01 23:02:21,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,822 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:02:21,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:02:21,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:02:21,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:02:21,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (1/1) ... [2024-12-01 23:02:21,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:02:21,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:02:21,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:02:21,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:02:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-01 23:02:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-01 23:02:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:02:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:02:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:02:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:02:21,983 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:02:21,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:02:22,066 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-01 23:02:22,066 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:02:22,074 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:02:22,074 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-01 23:02:22,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:02:22 BoogieIcfgContainer [2024-12-01 23:02:22,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:02:22,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:02:22,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:02:22,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:02:22,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:02:20" (1/3) ... [2024-12-01 23:02:22,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44853871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:02:22, skipping insertion in model container [2024-12-01 23:02:22,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:21" (2/3) ... [2024-12-01 23:02:22,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44853871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:02:22, skipping insertion in model container [2024-12-01 23:02:22,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:02:22" (3/3) ... [2024-12-01 23:02:22,083 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2024-12-01 23:02:22,098 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:02:22,099 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-01 23:02:22,147 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:02:22,158 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;@38960f32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:02:22,158 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-01 23:02:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2024-12-01 23:02:22,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-01 23:02:22,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:02:22,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:02:22,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-01 23:02:22,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:02:22,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2024-12-01 23:02:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:02:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654401121] [2024-12-01 23:02:22,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:02:22,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:02:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:02:22,287 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 23:02:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:02:22,324 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-01 23:02:22,326 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 23:02:22,327 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-12-01 23:02:22,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-12-01 23:02:22,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:02:22,332 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-01 23:02:22,345 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-01 23:02:22,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:02:22 BoogieIcfgContainer [2024-12-01 23:02:22,348 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-01 23:02:22,349 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-01 23:02:22,349 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-01 23:02:22,349 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-01 23:02:22,349 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:02:22" (3/4) ... [2024-12-01 23:02:22,351 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-01 23:02:22,352 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-01 23:02:22,353 INFO L158 Benchmark]: Toolchain (without parser) took 1457.71ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 47.3MB in the end (delta: 41.8MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2024-12-01 23:02:22,353 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:22,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 857.19ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 80.9MB in the end (delta: 8.0MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. [2024-12-01 23:02:22,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.14ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 78.3MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:02:22,354 INFO L158 Benchmark]: Boogie Preprocessor took 35.31ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 76.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:22,354 INFO L158 Benchmark]: RCFGBuilder took 249.59ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 64.8MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:02:22,355 INFO L158 Benchmark]: TraceAbstraction took 271.92ms. Allocated memory is still 117.4MB. Free memory was 64.2MB in the beginning and 47.8MB in the end (delta: 16.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:02:22,355 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 117.4MB. Free memory was 47.8MB in the beginning and 47.3MB in the end (delta: 455.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:22,357 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 117.4MB. Free memory was 73.4MB in the beginning and 73.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 857.19ms. Allocated memory is still 117.4MB. Free memory was 88.9MB in the beginning and 80.9MB in the end (delta: 8.0MB). Peak memory consumption was 57.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.14ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 78.3MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.31ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 76.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.59ms. Allocated memory is still 117.4MB. Free memory was 76.7MB in the beginning and 64.8MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 271.92ms. Allocated memory is still 117.4MB. Free memory was 64.2MB in the beginning and 47.8MB in the end (delta: 16.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 117.4MB. Free memory was 47.8MB in the beginning and 47.3MB in the end (delta: 455.5kB). 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_51_bad() [L1551] int data; [L1552] data = 0 [L1554] 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] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_51b_badSink(data) [L1577] data - 1 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: 1577]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=23occurred 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 [2024-12-01 23:02:22,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/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_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1 --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 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:02:24,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:02:24,369 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-12-01 23:02:24,375 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:02:24,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:02:24,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-12-01 23:02:24,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:02:24,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:02:24,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:02:24,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:02:24,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:02:24,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:02:24,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:02:24,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:02:24,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:02:24,398 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:02:24,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-01 23:02:24,399 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:02:24,400 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:02:24,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:02:24,400 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:02:24,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-01 23:02:24,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:02:24,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:02:24,402 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:02:24,402 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:02:24,402 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_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1 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 -> 7b04f392176375d25ddd9b836c223b22286636b2effde0c9ab3022927820c00a [2024-12-01 23:02:24,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:02:24,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:02:24,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:02:24,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:02:24,637 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:02:24,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2024-12-01 23:02:27,313 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/1833d93e0/97bce32338194bca8b8a532f5608c822/FLAG1a6b6ec37 [2024-12-01 23:02:27,576 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:02:27,577 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2024-12-01 23:02:27,597 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/1833d93e0/97bce32338194bca8b8a532f5608c822/FLAG1a6b6ec37 [2024-12-01 23:02:27,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/data/1833d93e0/97bce32338194bca8b8a532f5608c822 [2024-12-01 23:02:27,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:02:27,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:02:27,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:02:27,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:02:27,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:02:27,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:02:27" (1/1) ... [2024-12-01 23:02:27,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dd78f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:27, skipping insertion in model container [2024-12-01 23:02:27,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:02:27" (1/1) ... [2024-12-01 23:02:27,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:02:28,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:02:28,531 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:02:28,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:02:28,761 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:02:28,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28 WrapperNode [2024-12-01 23:02:28,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:02:28,762 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:02:28,762 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:02:28,762 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:02:28,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,805 INFO L138 Inliner]: procedures = 504, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2024-12-01 23:02:28,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:02:28,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:02:28,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:02:28,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:02:28,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,828 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]. [2024-12-01 23:02:28,828 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,828 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,835 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:02:28,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:02:28,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:02:28,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:02:28,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (1/1) ... [2024-12-01 23:02:28,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:02:28,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:02:28,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:02:28,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:02:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-01 23:02:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-01 23:02:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-01 23:02:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:02:28,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:02:28,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:02:28,999 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:02:29,000 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:02:29,102 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-12-01 23:02:29,102 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:02:29,109 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:02:29,109 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-01 23:02:29,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:02:29 BoogieIcfgContainer [2024-12-01 23:02:29,109 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:02:29,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:02:29,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:02:29,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:02:29,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:02:27" (1/3) ... [2024-12-01 23:02:29,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45aca9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:02:29, skipping insertion in model container [2024-12-01 23:02:29,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:02:28" (2/3) ... [2024-12-01 23:02:29,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45aca9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:02:29, skipping insertion in model container [2024-12-01 23:02:29,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:02:29" (3/3) ... [2024-12-01 23:02:29,116 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i [2024-12-01 23:02:29,127 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:02:29,128 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_51_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-12-01 23:02:29,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:02:29,172 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;@3c9086d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:02:29,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-01 23:02:29,175 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 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) [2024-12-01 23:02:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-01 23:02:29,179 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:02:29,180 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:02:29,180 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-12-01 23:02:29,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:02:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2024-12-01 23:02:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:02:29,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174612817] [2024-12-01 23:02:29,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:02:29,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:02:29,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:02:29,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:02:29,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:02:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:02:29,323 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 23:02:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:02:29,365 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-01 23:02:29,366 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 23:02:29,368 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-12-01 23:02:29,369 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-12-01 23:02:29,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:02:29,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:02:29,573 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-01 23:02:29,588 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-01 23:02:29,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:02:29 BoogieIcfgContainer [2024-12-01 23:02:29,590 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-01 23:02:29,591 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-01 23:02:29,591 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-01 23:02:29,591 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-01 23:02:29,592 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:02:29" (3/4) ... [2024-12-01 23:02:29,593 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-01 23:02:29,594 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-01 23:02:29,595 INFO L158 Benchmark]: Toolchain (without parser) took 1732.52ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 65.5MB in the beginning and 122.5MB in the end (delta: -57.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-12-01 23:02:29,595 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:29,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 898.53ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 60.4MB in the end (delta: 4.9MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2024-12-01 23:02:29,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.74ms. Allocated memory is still 92.3MB. Free memory was 60.4MB in the beginning and 57.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:29,596 INFO L158 Benchmark]: Boogie Preprocessor took 37.87ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 55.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:29,597 INFO L158 Benchmark]: RCFGBuilder took 265.42ms. Allocated memory is still 92.3MB. Free memory was 55.5MB in the beginning and 42.0MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 23:02:29,597 INFO L158 Benchmark]: TraceAbstraction took 479.50ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 41.5MB in the beginning and 122.5MB in the end (delta: -81.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:29,597 INFO L158 Benchmark]: Witness Printer took 3.12ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 122.5MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:02:29,599 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 898.53ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 60.4MB in the end (delta: 4.9MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.74ms. Allocated memory is still 92.3MB. Free memory was 60.4MB in the beginning and 57.7MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.87ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 55.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.42ms. Allocated memory is still 92.3MB. Free memory was 55.5MB in the beginning and 42.0MB in the end (delta: 13.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 479.50ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 41.5MB in the beginning and 122.5MB in the end (delta: -81.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.12ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 122.5MB in the end (delta: 18.4kB). 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: 1577]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. 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] [L1569] 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) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_51_bad() [L1551] int data; [L1552] data = 0 [L1554] 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] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_51b_badSink(data) [L1577] data - 1 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: 1577]: 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=23occurred 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 [2024-12-01 23:02:29,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d749e5a-f1d3-4d8c-aa77-28959010abc6/bin/uautomizer-verify-84ZbGMXZE1/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