./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_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_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/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_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/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_11b662a6-e847-48de-8398-cf6a50c21047/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 a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:42:02,843 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:42:02,959 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-24 01:42:02,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:42:02,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:42:03,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:42:03,010 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:42:03,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:42:03,011 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:42:03,013 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:42:03,013 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:42:03,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:42:03,014 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:42:03,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:42:03,015 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:42:03,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:42:03,016 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:42:03,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:03,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:03,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:03,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:42:03,019 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:42:03,019 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:42:03,019 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:42:03,019 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:42:03,019 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:42:03,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:42:03,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:42:03,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:42:03,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:42:03,020 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_11b662a6-e847-48de-8398-cf6a50c21047/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 -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2024-11-24 01:42:03,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:42:03,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:42:03,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:42:03,357 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:42:03,357 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:42:03,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2024-11-24 01:42:06,712 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/de7692971/6881404b25934dd48106795f55e909e1/FLAGf99f8f84f [2024-11-24 01:42:07,187 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:42:07,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2024-11-24 01:42:07,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/de7692971/6881404b25934dd48106795f55e909e1/FLAGf99f8f84f [2024-11-24 01:42:07,252 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/de7692971/6881404b25934dd48106795f55e909e1 [2024-11-24 01:42:07,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:42:07,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:42:07,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:07,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:42:07,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:42:07,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57880fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:07, skipping insertion in model container [2024-11-24 01:42:07,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:07" (1/1) ... [2024-11-24 01:42:07,343 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:42:08,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:08,573 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:42:08,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:08,913 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:42:08,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08 WrapperNode [2024-11-24 01:42:08,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:08,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:08,916 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:42:08,916 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:42:08,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:08,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:08,983 INFO L138 Inliner]: procedures = 499, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2024-11-24 01:42:08,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:08,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:42:08,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:42:08,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:42:08,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:08,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,002 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,018 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [1, 3]. 75 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 2 writes are split as follows [0, 2]. [2024-11-24 01:42:09,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,026 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,027 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:42:09,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:42:09,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:42:09,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:42:09,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (1/1) ... [2024-11-24 01:42:09,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:09,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:09,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:42:09,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:42:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 01:42:09,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 01:42:09,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:42:09,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:42:09,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:42:09,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:42:09,339 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:42:09,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:42:09,513 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-24 01:42:09,513 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:42:09,528 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:42:09,528 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:42:09,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:09 BoogieIcfgContainer [2024-11-24 01:42:09,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:42:09,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:42:09,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:42:09,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:42:09,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:42:07" (1/3) ... [2024-11-24 01:42:09,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfa0e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:09, skipping insertion in model container [2024-11-24 01:42:09,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:08" (2/3) ... [2024-11-24 01:42:09,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfa0e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:09, skipping insertion in model container [2024-11-24 01:42:09,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:09" (3/3) ... [2024-11-24 01:42:09,544 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2024-11-24 01:42:09,563 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:42:09,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_63_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:42:09,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:42:09,640 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;@4ce84d69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:42:09,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:42:09,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:42:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 01:42:09,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:09,653 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:09,653 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:42:09,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2024-11-24 01:42:09,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:42:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682781802] [2024-11-24 01:42:09,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:09,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:42:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:42:09,880 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:42:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:42:09,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 01:42:09,941 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:42:09,942 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 01:42:09,944 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 01:42:09,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:42:09,950 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 01:42:09,975 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:42:09,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:42:09 BoogieIcfgContainer [2024-11-24 01:42:09,979 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:42:09,980 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:42:09,980 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:42:09,980 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:42:09,981 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:09" (3/4) ... [2024-11-24 01:42:09,984 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:42:09,985 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:42:09,986 INFO L158 Benchmark]: Toolchain (without parser) took 2729.50ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 44.3MB in the end (delta: 45.4MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,987 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1655.23ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 81.6MB in the end (delta: 7.9MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.54ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 78.7MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,988 INFO L158 Benchmark]: Boogie Preprocessor took 58.85ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,989 INFO L158 Benchmark]: RCFGBuilder took 486.09ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 64.4MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,989 INFO L158 Benchmark]: TraceAbstraction took 446.72ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 44.8MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 01:42:09,989 INFO L158 Benchmark]: Witness Printer took 5.25ms. Allocated memory is still 117.4MB. Free memory was 44.8MB in the beginning and 44.3MB in the end (delta: 527.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:09,992 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1655.23ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 81.6MB in the end (delta: 7.9MB). Peak memory consumption was 58.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.54ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 78.7MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.85ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 77.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 486.09ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 64.4MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 446.72ms. Allocated memory is still 117.4MB. Free memory was 63.7MB in the beginning and 44.8MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.25ms. Allocated memory is still 117.4MB. Free memory was 44.8MB in the beginning and 44.3MB in the end (delta: 527.3kB). 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={14:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 01:42:10,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/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_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/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_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/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_11b662a6-e847-48de-8398-cf6a50c21047/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 a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:42:13,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:42:13,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-24 01:42:13,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:42:13,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:42:13,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-24 01:42:13,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:42:13,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:42:13,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:42:13,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:42:13,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:42:13,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:42:13,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:42:13,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:42:13,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:42:13,419 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:42:13,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:42:13,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:42:13,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:42:13,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:42:13,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:42:13,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:42:13,422 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:42:13,422 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:42:13,422 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-24 01:42:13,422 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:42:13,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:42:13,423 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:13,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:13,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:13,425 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:42:13,425 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:42:13,426 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:42:13,426 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:42:13,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:42:13,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:42:13,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:42:13,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:42:13,426 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_11b662a6-e847-48de-8398-cf6a50c21047/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 -> a7cfceb607367ceb5ddc9da4b4b337a554f2ce50f021f91119f80bf80cdbfb52 [2024-11-24 01:42:13,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:42:13,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:42:13,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:42:13,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:42:13,853 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:42:13,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2024-11-24 01:42:17,411 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/b855e1515/d40b50c12aec4a0f9aad47839ef14c4a/FLAG93637cf43 [2024-11-24 01:42:17,983 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:42:17,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2024-11-24 01:42:18,026 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/b855e1515/d40b50c12aec4a0f9aad47839ef14c4a/FLAG93637cf43 [2024-11-24 01:42:18,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/data/b855e1515/d40b50c12aec4a0f9aad47839ef14c4a [2024-11-24 01:42:18,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:42:18,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:42:18,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:18,060 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:42:18,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:42:18,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:18" (1/1) ... [2024-11-24 01:42:18,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cfad6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:18, skipping insertion in model container [2024-11-24 01:42:18,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:42:18" (1/1) ... [2024-11-24 01:42:18,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:42:19,466 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:19,482 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:42:19,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:42:19,889 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:42:19,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19 WrapperNode [2024-11-24 01:42:19,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:42:19,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:19,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:42:19,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:42:19,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:19,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:19,969 INFO L138 Inliner]: procedures = 504, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2024-11-24 01:42:19,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:42:19,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:42:19,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:42:19,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:42:19,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:19,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:19,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,025 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [1, 3]. 75 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1, 0]. The 2 writes are split as follows [0, 2]. [2024-11-24 01:42:20,025 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,046 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,047 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:42:20,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:42:20,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:42:20,072 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:42:20,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (1/1) ... [2024-11-24 01:42:20,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:42:20,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:20,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:42:20,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:42:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-24 01:42:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-24 01:42:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:42:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:42:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-24 01:42:20,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:42:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:42:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:42:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-24 01:42:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-24 01:42:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 01:42:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-24 01:42:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-24 01:42:20,351 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:42:20,354 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:42:20,556 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-24 01:42:20,556 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:42:20,567 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:42:20,567 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:42:20,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:20 BoogieIcfgContainer [2024-11-24 01:42:20,568 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:42:20,573 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:42:20,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:42:20,581 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:42:20,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:42:18" (1/3) ... [2024-11-24 01:42:20,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bca6e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:20, skipping insertion in model container [2024-11-24 01:42:20,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:42:19" (2/3) ... [2024-11-24 01:42:20,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bca6e2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:42:20, skipping insertion in model container [2024-11-24 01:42:20,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:20" (3/3) ... [2024-11-24 01:42:20,586 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_63_bad.i [2024-11-24 01:42:20,612 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:42:20,614 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_63_bad.i that has 2 procedures, 23 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-24 01:42:20,695 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:42:20,714 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;@614d3a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:42:20,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 01:42:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 01:42:20,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-24 01:42:20,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:42:20,727 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:42:20,728 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-24 01:42:20,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:42:20,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2024-11-24 01:42:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:42:20,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551122645] [2024-11-24 01:42:20,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:42:20,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:42:20,761 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:42:20,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:42:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:42:21,065 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:42:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:42:21,187 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 01:42:21,190 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:42:21,194 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-24 01:42:21,196 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-24 01:42:21,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:42:21,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:42:21,406 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-24 01:42:21,470 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:42:21,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:42:21 BoogieIcfgContainer [2024-11-24 01:42:21,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:42:21,485 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:42:21,485 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:42:21,485 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:42:21,486 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:42:20" (3/4) ... [2024-11-24 01:42:21,494 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:42:21,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:42:21,496 INFO L158 Benchmark]: Toolchain (without parser) took 3439.78ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 35.1MB in the end (delta: 21.3MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2024-11-24 01:42:21,496 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:21,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1830.64ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 50.6MB in the end (delta: 5.7MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-11-24 01:42:21,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.12ms. Allocated memory is still 83.9MB. Free memory was 50.6MB in the beginning and 48.0MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:21,500 INFO L158 Benchmark]: Boogie Preprocessor took 97.61ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 45.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:42:21,501 INFO L158 Benchmark]: RCFGBuilder took 496.71ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 31.5MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:42:21,501 INFO L158 Benchmark]: TraceAbstraction took 906.84ms. Allocated memory is still 83.9MB. Free memory was 30.8MB in the beginning and 35.5MB in the end (delta: -4.7MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2024-11-24 01:42:21,504 INFO L158 Benchmark]: Witness Printer took 10.05ms. Allocated memory is still 83.9MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:42:21,508 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 83.9MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1830.64ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 50.6MB in the end (delta: 5.7MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.12ms. Allocated memory is still 83.9MB. Free memory was 50.6MB in the beginning and 48.0MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 97.61ms. Allocated memory is still 83.9MB. Free memory was 48.0MB in the beginning and 45.5MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 496.71ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 31.5MB in the end (delta: 14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 906.84ms. Allocated memory is still 83.9MB. Free memory was 30.8MB in the beginning and 35.5MB in the end (delta: -4.7MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 10.05ms. Allocated memory is still 83.9MB. Free memory is still 35.1MB. 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of fgets at line 1555. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1557] data = atoi(inputBuffer) [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] 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: 1578]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 01:42:21,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11b662a6-e847-48de-8398-cf6a50c21047/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