./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/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_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX --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 0.2.5-dev-a016563 [2024-11-08 16:36:12,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:36:12,757 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-11-08 16:36:12,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:36:12,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:36:12,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:36:12,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:36:12,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:36:12,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:36:12,803 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:36:12,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:36:12,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:36:12,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:36:12,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:36:12,809 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:36:12,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:36:12,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:36:12,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:36:12,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:36:12,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:36:12,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:36:12,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:36:12,816 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:36:12,816 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:36:12,816 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:36:12,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:36:12,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:36:12,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:36:12,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:36:12,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:36:12,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:36:12,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:36:12,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:36:12,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:36:12,820 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:36:12,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:36:12,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:36:12,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:36:12,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:36:12,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:36:12,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:36:12,823 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2024-11-08 16:36:13,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:36:13,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:36:13,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:36:13,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:36:13,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:36:13,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i Unable to find full path for "g++" [2024-11-08 16:36:15,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:36:15,652 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:36:15,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-08 16:36:15,690 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data/cc3c4b224/7e50001ecc854957877517fb78db3081/FLAGd82766506 [2024-11-08 16:36:15,832 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data/cc3c4b224/7e50001ecc854957877517fb78db3081 [2024-11-08 16:36:15,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:36:15,836 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:36:15,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:36:15,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:36:15,843 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:36:15,844 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:15" (1/1) ... [2024-11-08 16:36:15,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661ee347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:15, skipping insertion in model container [2024-11-08 16:36:15,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:15" (1/1) ... [2024-11-08 16:36:15,932 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:36:17,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:36:17,025 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:36:17,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:36:17,289 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:36:17,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17 WrapperNode [2024-11-08 16:36:17,289 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:36:17,290 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:36:17,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:36:17,291 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:36:17,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,355 INFO L138 Inliner]: procedures = 498, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2024-11-08 16:36:17,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:36:17,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:36:17,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:36:17,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:36:17,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,389 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]. [2024-11-08 16:36:17,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,404 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,406 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,410 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:36:17,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:36:17,411 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:36:17,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:36:17,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (1/1) ... [2024-11-08 16:36:17,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:36:17,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:17,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:36:17,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:36:17,486 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 16:36:17,487 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 16:36:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:36:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:36:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:36:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:36:17,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:36:17,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:36:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:36:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:36:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:36:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:36:17,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:36:17,679 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:36:17,681 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:36:17,813 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-08 16:36:17,813 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:36:17,825 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:36:17,826 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:36:17,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:17 BoogieIcfgContainer [2024-11-08 16:36:17,826 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:36:17,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:36:17,829 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:36:17,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:36:17,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:36:15" (1/3) ... [2024-11-08 16:36:17,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae043c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:17, skipping insertion in model container [2024-11-08 16:36:17,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:17" (2/3) ... [2024-11-08 16:36:17,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae043c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:17, skipping insertion in model container [2024-11-08 16:36:17,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:17" (3/3) ... [2024-11-08 16:36:17,836 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-08 16:36:17,855 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:36:17,855 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:36:17,922 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:36:17,930 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;@1860e78d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:36:17,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:36:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 18 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) [2024-11-08 16:36:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 16:36:17,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:17,945 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:17,946 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:36:17,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash 733376356, now seen corresponding path program 1 times [2024-11-08 16:36:17,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:36:17,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643570352] [2024-11-08 16:36:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:36:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:36:18,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:36:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:36:18,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:36:18,273 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:36:18,276 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 16:36:18,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 16:36:18,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:36:18,285 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 16:36:18,324 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:36:18,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:36:18 BoogieIcfgContainer [2024-11-08 16:36:18,330 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:36:18,331 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:36:18,332 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:36:18,333 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:36:18,333 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:17" (3/4) ... [2024-11-08 16:36:18,338 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:36:18,339 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:36:18,341 INFO L158 Benchmark]: Toolchain (without parser) took 2504.60ms. Allocated memory was 161.5MB in the beginning and 222.3MB in the end (delta: 60.8MB). Free memory was 119.6MB in the beginning and 135.0MB in the end (delta: -15.5MB). Peak memory consumption was 45.9MB. Max. memory is 16.1GB. [2024-11-08 16:36:18,341 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:36:18,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1452.46ms. Allocated memory was 161.5MB in the beginning and 222.3MB in the end (delta: 60.8MB). Free memory was 119.6MB in the beginning and 175.9MB in the end (delta: -56.3MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. [2024-11-08 16:36:18,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.49ms. Allocated memory is still 222.3MB. Free memory was 175.9MB in the beginning and 172.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:36:18,345 INFO L158 Benchmark]: Boogie Preprocessor took 54.10ms. Allocated memory is still 222.3MB. Free memory was 172.8MB in the beginning and 170.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:36:18,347 INFO L158 Benchmark]: RCFGBuilder took 415.24ms. Allocated memory is still 222.3MB. Free memory was 170.7MB in the beginning and 156.0MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 16:36:18,348 INFO L158 Benchmark]: TraceAbstraction took 501.13ms. Allocated memory is still 222.3MB. Free memory was 154.9MB in the beginning and 135.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 16:36:18,349 INFO L158 Benchmark]: Witness Printer took 8.55ms. Allocated memory is still 222.3MB. Free memory is still 135.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:36:18,354 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1452.46ms. Allocated memory was 161.5MB in the beginning and 222.3MB in the end (delta: 60.8MB). Free memory was 119.6MB in the beginning and 175.9MB in the end (delta: -56.3MB). Peak memory consumption was 69.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.49ms. Allocated memory is still 222.3MB. Free memory was 175.9MB in the beginning and 172.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.10ms. Allocated memory is still 222.3MB. Free memory was 172.8MB in the beginning and 170.7MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 415.24ms. Allocated memory is still 222.3MB. Free memory was 170.7MB in the beginning and 156.0MB in the end (delta: 14.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 501.13ms. Allocated memory is still 222.3MB. Free memory was 154.9MB in the beginning and 135.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 8.55ms. Allocated memory is still 222.3MB. Free memory is still 135.0MB. 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 large string literal at line 1581, 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, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 16:36:18,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/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_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX --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 0.2.5-dev-a016563 [2024-11-08 16:36:21,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:36:21,312 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-11-08 16:36:21,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:36:21,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:36:21,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-11-08 16:36:21,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:36:21,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:36:21,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:36:21,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:36:21,375 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:36:21,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:36:21,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:36:21,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:36:21,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:36:21,379 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:36:21,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:36:21,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:36:21,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:36:21,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:36:21,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:36:21,386 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:36:21,387 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:36:21,387 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 16:36:21,388 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:36:21,388 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 16:36:21,388 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 16:36:21,389 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:36:21,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:36:21,389 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:36:21,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:36:21,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:36:21,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:36:21,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:36:21,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:36:21,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:36:21,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:36:21,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:36:21,395 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 16:36:21,395 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 16:36:21,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:36:21,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:36:21,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:36:21,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:36:21,396 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2a4e9f9fc01d060749b8ad4c191b239f41faf5c0f32522d7cc15915f576da31 [2024-11-08 16:36:21,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:36:21,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:36:21,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:36:21,881 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:36:21,881 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:36:21,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i Unable to find full path for "g++" [2024-11-08 16:36:24,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:36:24,758 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:36:24,760 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-08 16:36:24,797 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data/464ac075a/ad277dc5b5fb4919abd8f2f0d2d85f7e/FLAGdb19e4919 [2024-11-08 16:36:24,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/data/464ac075a/ad277dc5b5fb4919abd8f2f0d2d85f7e [2024-11-08 16:36:24,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:36:24,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:36:24,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:36:24,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:36:24,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:36:24,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:24" (1/1) ... [2024-11-08 16:36:24,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6970be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:24, skipping insertion in model container [2024-11-08 16:36:24,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:36:24" (1/1) ... [2024-11-08 16:36:24,934 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:36:26,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:36:26,221 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:36:26,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:36:26,561 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:36:26,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26 WrapperNode [2024-11-08 16:36:26,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:36:26,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:36:26,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:36:26,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:36:26,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,629 INFO L138 Inliner]: procedures = 503, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-11-08 16:36:26,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:36:26,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:36:26,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:36:26,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:36:26,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,649 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,684 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]. [2024-11-08 16:36:26,685 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:36:26,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:36:26,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:36:26,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:36:26,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (1/1) ... [2024-11-08 16:36:26,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:36:26,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:26,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:36:26,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:36:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-11-08 16:36:26,800 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-11-08 16:36:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:36:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 16:36:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 16:36:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:36:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:36:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:36:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 16:36:26,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 16:36:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:36:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 16:36:26,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 16:36:27,004 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:36:27,006 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:36:27,218 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-08 16:36:27,218 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:36:27,238 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:36:27,240 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:36:27,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:27 BoogieIcfgContainer [2024-11-08 16:36:27,242 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:36:27,246 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:36:27,246 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:36:27,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:36:27,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:36:24" (1/3) ... [2024-11-08 16:36:27,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bdd250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:27, skipping insertion in model container [2024-11-08 16:36:27,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:36:26" (2/3) ... [2024-11-08 16:36:27,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65bdd250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:36:27, skipping insertion in model container [2024-11-08 16:36:27,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:27" (3/3) ... [2024-11-08 16:36:27,254 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_34_bad.i [2024-11-08 16:36:27,273 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:36:27,273 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:36:27,342 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:36:27,348 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;@5b5733eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:36:27,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:36:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 18 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) [2024-11-08 16:36:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 16:36:27,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:36:27,370 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:36:27,371 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-11-08 16:36:27,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:36:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 733376356, now seen corresponding path program 1 times [2024-11-08 16:36:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 16:36:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246253506] [2024-11-08 16:36:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:36:27,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:27,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:36:27,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:36:27,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:36:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:36:27,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:36:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:36:27,736 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-08 16:36:27,738 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:36:27,740 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-11-08 16:36:27,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-11-08 16:36:27,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:36:27,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:36:27,948 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 16:36:27,982 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 16:36:27,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 04:36:27 BoogieIcfgContainer [2024-11-08 16:36:27,989 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 16:36:27,989 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 16:36:27,989 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 16:36:27,990 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 16:36:27,991 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:36:27" (3/4) ... [2024-11-08 16:36:27,993 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 16:36:27,994 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 16:36:27,995 INFO L158 Benchmark]: Toolchain (without parser) took 3168.53ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 55.7MB in the beginning and 44.8MB in the end (delta: 10.9MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2024-11-08 16:36:27,996 INFO L158 Benchmark]: CDTParser took 1.61ms. Allocated memory is still 65.0MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:36:27,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1731.98ms. Allocated memory is still 83.9MB. Free memory was 55.5MB in the beginning and 46.3MB in the end (delta: 9.2MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2024-11-08 16:36:27,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.61ms. Allocated memory is still 83.9MB. Free memory was 46.3MB in the beginning and 43.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 16:36:27,998 INFO L158 Benchmark]: Boogie Preprocessor took 76.52ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 40.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 16:36:27,999 INFO L158 Benchmark]: RCFGBuilder took 534.62ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 40.0MB in the beginning and 65.5MB in the end (delta: -25.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-11-08 16:36:28,000 INFO L158 Benchmark]: TraceAbstraction took 743.08ms. Allocated memory is still 102.8MB. Free memory was 64.9MB in the beginning and 45.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-08 16:36:28,000 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 102.8MB. Free memory was 45.4MB in the beginning and 44.8MB in the end (delta: 593.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 16:36:28,004 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.61ms. Allocated memory is still 65.0MB. Free memory was 40.8MB in the beginning and 40.7MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1731.98ms. Allocated memory is still 83.9MB. Free memory was 55.5MB in the beginning and 46.3MB in the end (delta: 9.2MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.61ms. Allocated memory is still 83.9MB. Free memory was 46.3MB in the beginning and 43.3MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.52ms. Allocated memory is still 83.9MB. Free memory was 43.3MB in the beginning and 40.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.62ms. Allocated memory was 83.9MB in the beginning and 102.8MB in the end (delta: 18.9MB). Free memory was 40.0MB in the beginning and 65.5MB in the end (delta: -25.4MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * TraceAbstraction took 743.08ms. Allocated memory is still 102.8MB. Free memory was 64.9MB in the beginning and 45.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 102.8MB. Free memory was 45.4MB in the beginning and 44.8MB in the end (delta: 593.1kB). 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 large string literal at line 1581, 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, 23 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=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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 16:36:28,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cd194c0-3036-40d8-9c74-991b26efcb27/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample