./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_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_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/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_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/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_2808f162-a496-4240-9338-09025f0e2552/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 e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:41:53,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:41:53,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-24 01:41:53,515 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:41:53,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:41:53,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:41:53,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:41:53,558 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:41:53,559 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:41:53,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:41:53,560 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:41:53,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:41:53,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:41:53,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:41:53,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:41:53,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:41:53,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:41:53,563 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:41:53,564 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:41:53,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:41:53,564 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:41:53,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:41:53,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:41:53,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:41:53,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:41:53,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:41:53,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:41:53,566 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:41:53,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:41:53,566 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:41:53,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:41:53,566 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:41:53,567 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:41:53,567 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:41:53,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:41:53,567 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_2808f162-a496-4240-9338-09025f0e2552/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 -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2024-11-24 01:41:53,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:41:53,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:41:53,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:41:53,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:41:53,902 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:41:53,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-24 01:41:56,821 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/ce6fb7682/ad0129218f984efda504f69cf2d048f6/FLAGca7727116 [2024-11-24 01:41:57,315 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:41:57,316 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-24 01:41:57,339 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/ce6fb7682/ad0129218f984efda504f69cf2d048f6/FLAGca7727116 [2024-11-24 01:41:57,359 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/ce6fb7682/ad0129218f984efda504f69cf2d048f6 [2024-11-24 01:41:57,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:41:57,364 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:41:57,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:41:57,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:41:57,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:41:57,371 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:41:57" (1/1) ... [2024-11-24 01:41:57,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b38bb5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:57, skipping insertion in model container [2024-11-24 01:41:57,372 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:41:57" (1/1) ... [2024-11-24 01:41:57,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:41:58,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:41:58,239 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:41:58,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:41:58,466 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:41:58,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58 WrapperNode [2024-11-24 01:41:58,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:41:58,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:41:58,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:41:58,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:41:58,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,516 INFO L138 Inliner]: procedures = 498, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-24 01:41:58,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:41:58,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:41:58,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:41:58,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:41:58,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,525 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,528 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,549 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 1 writes are split as follows [0, 1]. [2024-11-24 01:41:58,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:41:58,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:41:58,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:41:58,572 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:41:58,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (1/1) ... [2024-11-24 01:41:58,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:41:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:41:58,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:41:58,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 01:41:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:41:58,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:41:58,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:41:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:41:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:41:58,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:41:58,793 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:41:58,794 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:41:58,942 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-24 01:41:58,943 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:41:58,953 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:41:58,954 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:41:58,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:41:58 BoogieIcfgContainer [2024-11-24 01:41:58,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:41:58,956 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:41:58,956 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:41:58,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:41:58,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:41:57" (1/3) ... [2024-11-24 01:41:58,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3194ceab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:41:58, skipping insertion in model container [2024-11-24 01:41:58,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:41:58" (2/3) ... [2024-11-24 01:41:58,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3194ceab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:41:58, skipping insertion in model container [2024-11-24 01:41:58,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:41:58" (3/3) ... [2024-11-24 01:41:58,967 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-24 01:41:58,986 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:41:58,988 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:41:59,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:41:59,075 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;@60d03f2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:41:59,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:41:59,081 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) [2024-11-24 01:41:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 01:41:59,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:41:59,089 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:41:59,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:41:59,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:41:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2024-11-24 01:41:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:41:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706334856] [2024-11-24 01:41:59,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:41:59,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:41:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:41:59,324 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:41:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:41:59,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 01:41:59,420 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:41:59,423 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 01:41:59,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 01:41:59,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:41:59,432 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 01:41:59,464 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:41:59,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:41:59 BoogieIcfgContainer [2024-11-24 01:41:59,470 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:41:59,471 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:41:59,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:41:59,471 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:41:59,472 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:41:58" (3/4) ... [2024-11-24 01:41:59,475 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:41:59,476 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:41:59,478 INFO L158 Benchmark]: Toolchain (without parser) took 2113.07ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 69.6MB in the end (delta: 27.1MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2024-11-24 01:41:59,478 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 167.8MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:41:59,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1100.80ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 38.6MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-24 01:41:59,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.58ms. Allocated memory is still 142.6MB. Free memory was 38.6MB in the beginning and 35.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:41:59,480 INFO L158 Benchmark]: Boogie Preprocessor took 50.73ms. Allocated memory is still 142.6MB. Free memory was 35.8MB in the beginning and 34.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:41:59,481 INFO L158 Benchmark]: RCFGBuilder took 383.14ms. Allocated memory is still 142.6MB. Free memory was 34.0MB in the beginning and 88.8MB in the end (delta: -54.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2024-11-24 01:41:59,481 INFO L158 Benchmark]: TraceAbstraction took 513.69ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 69.6MB in the end (delta: 18.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-24 01:41:59,481 INFO L158 Benchmark]: Witness Printer took 5.40ms. Allocated memory is still 142.6MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:41:59,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 167.8MB. Free memory is still 103.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1100.80ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 38.6MB in the end (delta: 58.1MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.58ms. Allocated memory is still 142.6MB. Free memory was 38.6MB in the beginning and 35.8MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.73ms. Allocated memory is still 142.6MB. Free memory was 35.8MB in the beginning and 34.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 383.14ms. Allocated memory is still 142.6MB. Free memory was 34.0MB in the beginning and 88.8MB in the end (delta: -54.8MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 513.69ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 69.6MB in the end (delta: 18.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 5.40ms. Allocated memory is still 142.6MB. Free memory is still 69.6MB. 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of fgets at line 1560. 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] [L1581] 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) [L1581] 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] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] 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, myUnion={14:0}] [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] 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: 1573]: 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 [2024-11-24 01:41:59,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/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_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/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_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/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_2808f162-a496-4240-9338-09025f0e2552/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 e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:42:02,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:42:02,455 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-24 01:42:02,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:42:02,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:42:02,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-24 01:42:02,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:42:02,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:42:02,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:42:02,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:42:02,511 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:42:02,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:42:02,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:42:02,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:42:02,512 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:42:02,512 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:42:02,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:42:02,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:42:02,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:42:02,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:42:02,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:42:02,515 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:42:02,516 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:02,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:02,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:02,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:42:02,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:42:02,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:42:02,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:42:02,517 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:42:02,517 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:42:02,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:42:02,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:42:02,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:42:02,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:42:02,519 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_2808f162-a496-4240-9338-09025f0e2552/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 -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2024-11-24 01:42:02,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:42:02,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:42:02,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:42:02,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:42:02,903 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:42:02,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-24 01:42:06,162 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/8f7d392bb/aaafefc6264c41349152e456905d4ad8/FLAG7bd1736a8 [2024-11-24 01:42:06,550 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:42:06,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-24 01:42:06,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/8f7d392bb/aaafefc6264c41349152e456905d4ad8/FLAG7bd1736a8 [2024-11-24 01:42:06,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/data/8f7d392bb/aaafefc6264c41349152e456905d4ad8 [2024-11-24 01:42:06,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:42:06,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:42:06,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:06,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:42:06,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:42:06,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:06" (1/1) ... [2024-11-24 01:42:06,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531bd0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:06, skipping insertion in model container [2024-11-24 01:42:06,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:06" (1/1) ... [2024-11-24 01:42:06,649 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:42:07,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:07,537 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:42:07,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:07,828 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:42:07,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07 WrapperNode [2024-11-24 01:42:07,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:07,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:07,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:42:07,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:42:07,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,911 INFO L138 Inliner]: procedures = 503, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-11-24 01:42:07,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:07,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:42:07,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:42:07,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:42:07,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,960 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [1, 2]. 67 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 1 writes are split as follows [0, 1]. [2024-11-24 01:42:07,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,975 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,980 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,981 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,995 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:42:08,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:42:08,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:42:08,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:42:08,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:08,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:08,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:42:08,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:42:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 01:42:08,078 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 01:42:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:42:08,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:42:08,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:42:08,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-24 01:42:08,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-24 01:42:08,279 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:42:08,281 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:42:08,476 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-24 01:42:08,478 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:42:08,487 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:42:08,488 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:42:08,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:08 BoogieIcfgContainer [2024-11-24 01:42:08,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:42:08,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:42:08,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:42:08,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:42:08,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:42:06" (1/3) ... [2024-11-24 01:42:08,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49829894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:08, skipping insertion in model container [2024-11-24 01:42:08,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07" (2/3) ... [2024-11-24 01:42:08,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49829894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:08, skipping insertion in model container [2024-11-24 01:42:08,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:08" (3/3) ... [2024-11-24 01:42:08,502 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-24 01:42:08,515 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:42:08,517 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i that has 2 procedures, 22 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:42:08,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:42:08,607 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;@76f735f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:42:08,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:42:08,611 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) [2024-11-24 01:42:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 01:42:08,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:08,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:08,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:42:08,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:08,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2024-11-24 01:42:08,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:42:08,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486344559] [2024-11-24 01:42:08,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:08,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:08,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:08,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:08,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:42:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:42:08,859 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:42:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:42:08,948 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 01:42:08,950 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:42:08,951 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 01:42:08,953 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 01:42:08,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:42:09,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:09,160 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 01:42:09,189 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:42:09,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:42:09 BoogieIcfgContainer [2024-11-24 01:42:09,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:42:09,196 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:42:09,196 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:42:09,196 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:42:09,197 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:08" (3/4) ... [2024-11-24 01:42:09,200 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:42:09,201 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:42:09,203 INFO L158 Benchmark]: Toolchain (without parser) took 2608.06ms. Allocated memory is still 83.9MB. Free memory was 57.5MB in the beginning and 38.5MB in the end (delta: 19.1MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,204 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1233.76ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 52.3MB in the end (delta: 4.9MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.71ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 49.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,205 INFO L158 Benchmark]: Boogie Preprocessor took 84.64ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.3MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,206 INFO L158 Benchmark]: RCFGBuilder took 488.89ms. Allocated memory is still 83.9MB. Free memory was 46.9MB in the beginning and 33.3MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,206 INFO L158 Benchmark]: TraceAbstraction took 703.29ms. Allocated memory is still 83.9MB. Free memory was 32.6MB in the beginning and 38.9MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,206 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 83.9MB. Free memory was 38.9MB in the beginning and 38.5MB in the end (delta: 422.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,208 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 83.9MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1233.76ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 52.3MB in the end (delta: 4.9MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.71ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 49.6MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 84.64ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.3MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 488.89ms. Allocated memory is still 83.9MB. Free memory was 46.9MB in the beginning and 33.3MB in the end (delta: 13.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 703.29ms. Allocated memory is still 83.9MB. Free memory was 32.6MB in the beginning and 38.9MB in the end (delta: -6.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 83.9MB. Free memory was 38.9MB in the beginning and 38.5MB in the end (delta: 422.2kB). 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: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of fgets at line 1560. 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] [L1581] 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) [L1581] 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] [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_sub_34_unionType myUnion; [L1557] data = 0 [L1559] 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, myUnion={7:0}] [L1560] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] data = atoi(inputBuffer) [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] 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: 1573]: 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, 0.1s 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 [2024-11-24 01:42:09,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2808f162-a496-4240-9338-09025f0e2552/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