./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC --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 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:27:03,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:27:03,355 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-23 18:27:03,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:27:03,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:27:03,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:27:03,395 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:27:03,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:27:03,396 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:27:03,396 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:27:03,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:27:03,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:27:03,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:27:03,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:27:03,397 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:27:03,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 18:27:03,398 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:27:03,399 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:03,399 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:27:03,399 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:03,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:27:03,400 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:27:03,401 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_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC 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 -> 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa [2024-11-23 18:27:03,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:27:03,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:27:03,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:27:03,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:27:03,675 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:27:03,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2024-11-23 18:27:06,685 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/a6f5c5f51/2103d54e2c924e98819a559bd674df70/FLAGe2d93cc8a [2024-11-23 18:27:07,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:27:07,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2024-11-23 18:27:07,146 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/a6f5c5f51/2103d54e2c924e98819a559bd674df70/FLAGe2d93cc8a [2024-11-23 18:27:07,167 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/a6f5c5f51/2103d54e2c924e98819a559bd674df70 [2024-11-23 18:27:07,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:27:07,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:27:07,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:27:07,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:27:07,183 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:27:07,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:27:07" (1/1) ... [2024-11-23 18:27:07,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738f6964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:07, skipping insertion in model container [2024-11-23 18:27:07,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:27:07" (1/1) ... [2024-11-23 18:27:07,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:27:08,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:27:08,461 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:27:08,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:27:08,687 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:27:08,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08 WrapperNode [2024-11-23 18:27:08,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:27:08,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:27:08,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:27:08,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:27:08,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,735 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-23 18:27:08,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:27:08,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:27:08,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:27:08,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:27:08,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,760 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]. [2024-11-23 18:27:08,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,765 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:27:08,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:27:08,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:27:08,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:27:08,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (1/1) ... [2024-11-23 18:27:08,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:08,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:08,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:27:08,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:27:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 18:27:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 18:27:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:27:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:27:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:27:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:27:08,995 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:27:08,997 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:27:09,119 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-23 18:27:09,119 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:27:09,129 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:27:09,129 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 18:27:09,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:09 BoogieIcfgContainer [2024-11-23 18:27:09,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:27:09,132 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:27:09,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:27:09,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:27:09,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:27:07" (1/3) ... [2024-11-23 18:27:09,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323ef7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:27:09, skipping insertion in model container [2024-11-23 18:27:09,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:08" (2/3) ... [2024-11-23 18:27:09,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323ef7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:27:09, skipping insertion in model container [2024-11-23 18:27:09,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:09" (3/3) ... [2024-11-23 18:27:09,143 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2024-11-23 18:27:09,168 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:27:09,170 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_01_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 18:27:09,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:27:09,277 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;@594f89f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:27:09,277 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 18:27:09,282 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) [2024-11-23 18:27:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-23 18:27:09,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:27:09,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:27:09,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 18:27:09,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:27:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2024-11-23 18:27:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:27:09,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237679655] [2024-11-23 18:27:09,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:27:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 18:27:09,514 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 18:27:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 18:27:09,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 18:27:09,576 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 18:27:09,578 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 18:27:09,580 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 18:27:09,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 18:27:09,584 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-23 18:27:09,610 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 18:27:09,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 06:27:09 BoogieIcfgContainer [2024-11-23 18:27:09,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 18:27:09,614 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 18:27:09,614 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 18:27:09,614 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 18:27:09,615 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:09" (3/4) ... [2024-11-23 18:27:09,617 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 18:27:09,618 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 18:27:09,620 INFO L158 Benchmark]: Toolchain (without parser) took 2447.09ms. Allocated memory is still 142.6MB. Free memory was 114.3MB in the beginning and 90.6MB in the end (delta: 23.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-11-23 18:27:09,620 INFO L158 Benchmark]: CDTParser took 1.59ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 74.7MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:09,621 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1513.43ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 55.0MB in the end (delta: 59.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-23 18:27:09,621 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.99ms. Allocated memory is still 142.6MB. Free memory was 55.0MB in the beginning and 52.4MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 18:27:09,621 INFO L158 Benchmark]: Boogie Preprocessor took 35.63ms. Allocated memory is still 142.6MB. Free memory was 52.4MB in the beginning and 50.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:09,622 INFO L158 Benchmark]: RCFGBuilder took 357.82ms. Allocated memory is still 142.6MB. Free memory was 50.8MB in the beginning and 108.4MB in the end (delta: -57.6MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2024-11-23 18:27:09,622 INFO L158 Benchmark]: TraceAbstraction took 481.67ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 90.8MB in the end (delta: 17.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-23 18:27:09,623 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 90.6MB in the end (delta: 198.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:09,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.59ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 74.7MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1513.43ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 55.0MB in the end (delta: 59.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.99ms. Allocated memory is still 142.6MB. Free memory was 55.0MB in the beginning and 52.4MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.63ms. Allocated memory is still 142.6MB. Free memory was 52.4MB in the beginning and 50.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 357.82ms. Allocated memory is still 142.6MB. Free memory was 50.8MB in the beginning and 108.4MB in the end (delta: -57.6MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 481.67ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 90.8MB in the end (delta: 17.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 90.6MB in the end (delta: 198.5kB). 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] [L1571] 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) [L1571] 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_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 - 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: 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: 0.4s, 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=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, 0.1s 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 [2024-11-23 18:27:09,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/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_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC --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 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:27:12,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:27:12,588 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-23 18:27:12,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:27:12,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:27:12,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-23 18:27:12,627 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:27:12,628 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:27:12,628 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:27:12,628 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:27:12,628 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:27:12,629 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:27:12,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:27:12,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:27:12,629 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:27:12,629 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:27:12,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 18:27:12,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 18:27:12,631 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 18:27:12,631 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 18:27:12,631 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 18:27:12,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:27:12,631 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:27:12,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:27:12,631 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:12,632 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:27:12,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:12,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:27:12,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:27:12,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:27:12,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:27:12,634 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_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC 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 -> 195a8bdf5097cf476dea2c8b400f0b21e18552040e9cfb1114ae89996b8bdefa [2024-11-23 18:27:13,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:27:13,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:27:13,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:27:13,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:27:13,040 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:27:13,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2024-11-23 18:27:16,181 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/c5f44db6f/32028ad066914e90bce0f3f271d32f90/FLAGf7664556a [2024-11-23 18:27:16,537 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:27:16,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2024-11-23 18:27:16,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/c5f44db6f/32028ad066914e90bce0f3f271d32f90/FLAGf7664556a [2024-11-23 18:27:16,596 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/data/c5f44db6f/32028ad066914e90bce0f3f271d32f90 [2024-11-23 18:27:16,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:27:16,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:27:16,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:27:16,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:27:16,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:27:16,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:27:16" (1/1) ... [2024-11-23 18:27:16,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573fcf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:16, skipping insertion in model container [2024-11-23 18:27:16,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:27:16" (1/1) ... [2024-11-23 18:27:16,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:27:17,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:27:17,622 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:27:17,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:27:17,929 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:27:17,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17 WrapperNode [2024-11-23 18:27:17,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:27:17,931 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:27:17,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:27:17,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:27:17,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:17,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:17,981 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-11-23 18:27:17,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:27:17,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:27:17,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:27:17,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:27:17,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:17,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:17,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,019 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]. [2024-11-23 18:27:18,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,034 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:27:18,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:27:18,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:27:18,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:27:18,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (1/1) ... [2024-11-23 18:27:18,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:27:18,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:18,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:27:18,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:27:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-23 18:27:18,141 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-23 18:27:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 18:27:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:27:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:27:18,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:27:18,338 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:27:18,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:27:18,532 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-23 18:27:18,534 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:27:18,542 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:27:18,544 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 18:27:18,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:18 BoogieIcfgContainer [2024-11-23 18:27:18,545 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:27:18,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:27:18,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:27:18,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:27:18,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:27:16" (1/3) ... [2024-11-23 18:27:18,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dcd1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:27:18, skipping insertion in model container [2024-11-23 18:27:18,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:27:17" (2/3) ... [2024-11-23 18:27:18,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dcd1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:27:18, skipping insertion in model container [2024-11-23 18:27:18,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:18" (3/3) ... [2024-11-23 18:27:18,560 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_01_bad.i [2024-11-23 18:27:18,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:27:18,579 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_01_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-23 18:27:18,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:27:18,686 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;@3b84aae6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:27:18,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-23 18:27:18,693 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) [2024-11-23 18:27:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-23 18:27:18,701 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:27:18,701 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:27:18,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-23 18:27:18,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:27:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2024-11-23 18:27:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 18:27:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430209195] [2024-11-23 18:27:18,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:27:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:18,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:27:18,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:27:18,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:27:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 18:27:18,917 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 18:27:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 18:27:18,993 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-23 18:27:18,994 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 18:27:19,000 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-23 18:27:19,002 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-23 18:27:19,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:27:19,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:27:19,209 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-23 18:27:19,237 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-23 18:27:19,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 06:27:19 BoogieIcfgContainer [2024-11-23 18:27:19,242 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-23 18:27:19,243 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 18:27:19,243 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 18:27:19,243 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 18:27:19,244 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:27:18" (3/4) ... [2024-11-23 18:27:19,246 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-23 18:27:19,246 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 18:27:19,248 INFO L158 Benchmark]: Toolchain (without parser) took 2647.61ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 41.7MB in the end (delta: 15.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2024-11-23 18:27:19,248 INFO L158 Benchmark]: CDTParser took 0.86ms. Allocated memory is still 83.9MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:19,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1329.18ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 52.8MB in the end (delta: 4.3MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2024-11-23 18:27:19,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.33ms. Allocated memory is still 83.9MB. Free memory was 52.8MB in the beginning and 50.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:19,249 INFO L158 Benchmark]: Boogie Preprocessor took 76.95ms. Allocated memory is still 83.9MB. Free memory was 50.0MB in the beginning and 48.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:19,250 INFO L158 Benchmark]: RCFGBuilder took 486.35ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 35.0MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-23 18:27:19,250 INFO L158 Benchmark]: TraceAbstraction took 693.82ms. Allocated memory is still 83.9MB. Free memory was 34.6MB in the beginning and 41.7MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:19,251 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 83.9MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 18:27:19,253 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86ms. Allocated memory is still 83.9MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1329.18ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 52.8MB in the end (delta: 4.3MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.33ms. Allocated memory is still 83.9MB. Free memory was 52.8MB in the beginning and 50.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 76.95ms. Allocated memory is still 83.9MB. Free memory was 50.0MB in the beginning and 48.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 486.35ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 35.0MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 693.82ms. Allocated memory is still 83.9MB. Free memory was 34.6MB in the beginning and 41.7MB in the end (delta: -7.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 83.9MB. Free memory is still 41.7MB. 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] [L1571] 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) [L1571] 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_sub_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 - 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: 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 [2024-11-23 18:27:19,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_102c8373-ffe1-4a38-ae4f-f79405c47db6/bin/uautomizer-verify-LYvppIcaGC/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