./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya --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 e341d5d5b6ed8e590139076106fa6fd595ee882611aa787b9756fbff6de0ebe9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:32:13,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:32:13,466 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 05:32:13,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:32:13,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:32:13,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:32:13,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:32:13,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:32:13,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:32:13,495 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:32:13,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:32:13,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:32:13,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:32:13,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:32:13,498 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:32:13,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:32:13,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:32:13,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:32:13,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:32:13,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:32:13,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:32:13,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:32:13,502 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:32:13,502 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:32:13,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:32:13,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:32:13,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:32:13,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:32:13,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:32:13,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:32:13,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:32:13,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:32:13,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:32:13,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:32:13,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:32:13,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:32:13,507 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:32:13,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:32:13,507 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:32:13,507 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:32:13,508 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:32:13,508 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_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e341d5d5b6ed8e590139076106fa6fd595ee882611aa787b9756fbff6de0ebe9 [2023-11-29 05:32:13,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:32:13,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:32:13,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:32:13,736 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:32:13,736 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:32:13,737 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i [2023-11-29 05:32:16,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:32:16,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:32:16,798 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i [2023-11-29 05:32:16,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data/90acf1a6e/7561dc76a94c4b7291d8166b9693b862/FLAG96eeff348 [2023-11-29 05:32:16,836 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data/90acf1a6e/7561dc76a94c4b7291d8166b9693b862 [2023-11-29 05:32:16,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:32:16,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:32:16,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:32:16,842 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:32:16,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:32:16,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:32:16" (1/1) ... [2023-11-29 05:32:16,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d11c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:16, skipping insertion in model container [2023-11-29 05:32:16,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:32:16" (1/1) ... [2023-11-29 05:32:16,906 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:32:17,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:32:17,763 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:32:17,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:32:18,040 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:18,040 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:18,040 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:18,040 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:18,040 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:18,046 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:32:18,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18 WrapperNode [2023-11-29 05:32:18,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:32:18,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:32:18,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:32:18,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:32:18,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,108 INFO L138 Inliner]: procedures = 500, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 67 [2023-11-29 05:32:18,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:32:18,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:32:18,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:32:18,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:32:18,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,139 INFO L175 MemorySlicer]: Split 7 memory accesses to 4 slices as follows [1, 1, 2, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2023-11-29 05:32:18,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,140 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,155 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:32:18,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:32:18,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:32:18,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:32:18,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (1/1) ... [2023-11-29 05:32:18,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:32:18,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:18,200 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:32:18,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:32:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 05:32:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 05:32:18,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 05:32:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:32:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-29 05:32:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-29 05:32:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-29 05:32:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-29 05:32:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:32:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:32:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:32:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:32:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:32:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:32:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:32:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:32:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 05:32:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:32:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:32:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:32:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:32:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:32:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:32:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:32:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:32:18,393 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:32:18,395 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:32:18,522 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:32:18,559 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:32:18,559 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:32:18,560 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:18 BoogieIcfgContainer [2023-11-29 05:32:18,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:32:18,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:32:18,564 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:32:18,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:32:18,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:32:16" (1/3) ... [2023-11-29 05:32:18,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e4be47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:32:18, skipping insertion in model container [2023-11-29 05:32:18,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:18" (2/3) ... [2023-11-29 05:32:18,568 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e4be47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:32:18, skipping insertion in model container [2023-11-29 05:32:18,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:18" (3/3) ... [2023-11-29 05:32:18,569 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i [2023-11-29 05:32:18,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:32:18,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:32:18,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:32:18,629 INFO L357 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, mHoare=true, 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;@12ca0019, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:32:18,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:32:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2023-11-29 05:32:18,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 05:32:18,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:18,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:18,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 05:32:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1799562210, now seen corresponding path program 1 times [2023-11-29 05:32:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:18,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908834398] [2023-11-29 05:32:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:18,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:32:18,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:32:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:32:18,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 05:32:18,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:32:18,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 05:32:18,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 05:32:18,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:32:18,877 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:32:18,880 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:32:18,896 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-11-29 05:32:18,899 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post105 could not be translated [2023-11-29 05:32:18,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:32:18 BoogieIcfgContainer [2023-11-29 05:32:18,906 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:32:18,907 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:32:18,907 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:32:18,907 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:32:18,907 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:18" (3/4) ... [2023-11-29 05:32:18,909 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 05:32:18,910 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:32:18,911 INFO L158 Benchmark]: Toolchain (without parser) took 2070.77ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 124.1MB in the beginning and 147.2MB in the end (delta: -23.0MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2023-11-29 05:32:18,912 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory was 133.0MB in the beginning and 132.9MB in the end (delta: 16.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:32:18,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1205.42ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 123.6MB in the beginning and 190.2MB in the end (delta: -66.6MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. [2023-11-29 05:32:18,913 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.80ms. Allocated memory is still 234.9MB. Free memory was 190.2MB in the beginning and 187.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:32:18,914 INFO L158 Benchmark]: Boogie Preprocessor took 51.52ms. Allocated memory is still 234.9MB. Free memory was 187.0MB in the beginning and 183.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:32:18,915 INFO L158 Benchmark]: RCFGBuilder took 399.28ms. Allocated memory is still 234.9MB. Free memory was 183.9MB in the beginning and 168.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 05:32:18,915 INFO L158 Benchmark]: TraceAbstraction took 342.50ms. Allocated memory is still 234.9MB. Free memory was 167.1MB in the beginning and 148.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 05:32:18,916 INFO L158 Benchmark]: Witness Printer took 3.59ms. Allocated memory is still 234.9MB. Free memory was 148.2MB in the beginning and 147.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:32:18,919 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory was 133.0MB in the beginning and 132.9MB in the end (delta: 16.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1205.42ms. Allocated memory was 167.8MB in the beginning and 234.9MB in the end (delta: 67.1MB). Free memory was 123.6MB in the beginning and 190.2MB in the end (delta: -66.6MB). Peak memory consumption was 65.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.80ms. Allocated memory is still 234.9MB. Free memory was 190.2MB in the beginning and 187.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.52ms. Allocated memory is still 234.9MB. Free memory was 187.0MB in the beginning and 183.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 399.28ms. Allocated memory is still 234.9MB. Free memory was 183.9MB in the beginning and 168.1MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 342.50ms. Allocated memory is still 234.9MB. Free memory was 167.1MB in the beginning and 148.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.59ms. Allocated memory is still 234.9MB. Free memory was 148.2MB in the beginning and 147.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post105 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 large string literal at line 1569. 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); [L1569] CALL 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, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741828, argc=1073741828, argv={1073741832:1073741829}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataPtr={6:0}, 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, 18 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=18occurred 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, 10 NumberOfCodeBlocks, 10 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 [2023-11-29 05:32:18,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/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 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_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya --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 e341d5d5b6ed8e590139076106fa6fd595ee882611aa787b9756fbff6de0ebe9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:32:20,915 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:32:20,981 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-29 05:32:21,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:32:21,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:32:21,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-29 05:32:21,034 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:32:21,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:32:21,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:32:21,036 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:32:21,036 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:32:21,037 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:32:21,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:32:21,038 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:32:21,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:32:21,039 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:32:21,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:32:21,040 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:32:21,041 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:32:21,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:32:21,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:32:21,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:32:21,042 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 05:32:21,043 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 05:32:21,043 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 05:32:21,044 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 05:32:21,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 05:32:21,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:32:21,045 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:32:21,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:32:21,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:32:21,046 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:32:21,047 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:32:21,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:32:21,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:32:21,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:32:21,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:32:21,048 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 05:32:21,048 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 05:32:21,048 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:32:21,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:32:21,049 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:32:21,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:32:21,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:32:21,049 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 05:32:21,050 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_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e341d5d5b6ed8e590139076106fa6fd595ee882611aa787b9756fbff6de0ebe9 [2023-11-29 05:32:21,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:32:21,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:32:21,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:32:21,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:32:21,373 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:32:21,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i [2023-11-29 05:32:24,150 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:32:24,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:32:24,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i [2023-11-29 05:32:24,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data/132c02f92/3b6ad8bf64ed4d4b8be3196a48b41800/FLAG2356b19fd [2023-11-29 05:32:24,483 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/data/132c02f92/3b6ad8bf64ed4d4b8be3196a48b41800 [2023-11-29 05:32:24,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:32:24,487 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:32:24,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:32:24,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:32:24,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:32:24,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:32:24" (1/1) ... [2023-11-29 05:32:24,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303b10e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:24, skipping insertion in model container [2023-11-29 05:32:24,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:32:24" (1/1) ... [2023-11-29 05:32:24,567 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:32:25,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:32:25,236 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:32:25,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:32:25,437 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:25,438 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:25,438 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:25,438 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:25,438 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:25,444 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:32:25,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25 WrapperNode [2023-11-29 05:32:25,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:32:25,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:32:25,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:32:25,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:32:25,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,506 INFO L138 Inliner]: procedures = 505, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 66 [2023-11-29 05:32:25,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:32:25,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:32:25,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:32:25,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:32:25,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,537 INFO L175 MemorySlicer]: Split 7 memory accesses to 4 slices as follows [1, 2, 1, 3]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 0, 1, 0]. The 4 writes are split as follows [0, 2, 0, 2]. [2023-11-29 05:32:25,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:32:25,565 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:32:25,565 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:32:25,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:32:25,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (1/1) ... [2023-11-29 05:32:25,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:32:25,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:25,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:32:25,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:32:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 05:32:25,638 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 05:32:25,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 05:32:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:32:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 05:32:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 05:32:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 05:32:25,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 05:32:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:32:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:32:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:32:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 05:32:25,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 05:32:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 05:32:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 05:32:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:32:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 05:32:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 05:32:25,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 05:32:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 05:32:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 05:32:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-29 05:32:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-29 05:32:25,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-29 05:32:25,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2023-11-29 05:32:25,815 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:32:25,817 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:32:25,980 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:32:26,015 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:32:26,015 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 05:32:26,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:26 BoogieIcfgContainer [2023-11-29 05:32:26,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:32:26,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:32:26,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:32:26,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:32:26,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:32:24" (1/3) ... [2023-11-29 05:32:26,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d3240f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:32:26, skipping insertion in model container [2023-11-29 05:32:26,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:25" (2/3) ... [2023-11-29 05:32:26,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d3240f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:32:26, skipping insertion in model container [2023-11-29 05:32:26,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:26" (3/3) ... [2023-11-29 05:32:26,025 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_63_bad.i [2023-11-29 05:32:26,044 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:32:26,044 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 05:32:26,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:32:26,106 INFO L357 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, mHoare=true, 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;@ee18bb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:32:26,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 05:32:26,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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) [2023-11-29 05:32:26,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 05:32:26,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:26,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:26,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 05:32:26,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1799562210, now seen corresponding path program 1 times [2023-11-29 05:32:26,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:32:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899438833] [2023-11-29 05:32:26,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:26,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:32:26,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:32:26,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 05:32:26,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 05:32:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:32:26,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 05:32:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 05:32:26,409 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 05:32:26,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 05:32:26,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 05:32:26,413 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 05:32:26,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:32:26,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 05:32:26,618 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 05:32:26,621 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 05:32:26,633 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-11-29 05:32:26,636 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post103 could not be translated [2023-11-29 05:32:26,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 05:32:26 BoogieIcfgContainer [2023-11-29 05:32:26,644 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 05:32:26,644 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 05:32:26,644 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 05:32:26,645 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 05:32:26,645 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:26" (3/4) ... [2023-11-29 05:32:26,647 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 05:32:26,648 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 05:32:26,649 INFO L158 Benchmark]: Toolchain (without parser) took 2162.06ms. Allocated memory was 62.9MB in the beginning and 107.0MB in the end (delta: 44.0MB). Free memory was 30.3MB in the beginning and 60.5MB in the end (delta: -30.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2023-11-29 05:32:26,649 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 62.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:32:26,650 INFO L158 Benchmark]: CACSL2BoogieTranslator took 956.44ms. Allocated memory was 62.9MB in the beginning and 107.0MB in the end (delta: 44.0MB). Free memory was 29.9MB in the beginning and 78.1MB in the end (delta: -48.1MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-29 05:32:26,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.75ms. Allocated memory is still 107.0MB. Free memory was 78.1MB in the beginning and 74.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 05:32:26,651 INFO L158 Benchmark]: Boogie Preprocessor took 57.18ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 71.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 05:32:26,652 INFO L158 Benchmark]: RCFGBuilder took 450.98ms. Allocated memory is still 107.0MB. Free memory was 71.3MB in the beginning and 52.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 05:32:26,653 INFO L158 Benchmark]: TraceAbstraction took 625.18ms. Allocated memory is still 107.0MB. Free memory was 51.9MB in the beginning and 61.1MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:32:26,653 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 107.0MB. Free memory was 61.1MB in the beginning and 60.5MB in the end (delta: 593.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 05:32:26,656 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 62.9MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 956.44ms. Allocated memory was 62.9MB in the beginning and 107.0MB in the end (delta: 44.0MB). Free memory was 29.9MB in the beginning and 78.1MB in the end (delta: -48.1MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.75ms. Allocated memory is still 107.0MB. Free memory was 78.1MB in the beginning and 74.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.18ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 71.3MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 450.98ms. Allocated memory is still 107.0MB. Free memory was 71.3MB in the beginning and 52.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 625.18ms. Allocated memory is still 107.0MB. Free memory was 51.9MB in the beginning and 61.1MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 107.0MB. Free memory was 61.1MB in the beginning and 60.5MB in the end (delta: 593.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post103 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 large string literal at line 1569. 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); [L1569] CALL 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, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_63_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_63b_badSink(&data) [L1576] EXPR \read(*dataPtr) [L1576] int data = *dataPtr; [L1578] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={7:0}, dataPtr={7:0}, 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=18occurred 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, 10 NumberOfCodeBlocks, 10 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 [2023-11-29 05:32:26,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f79caee-1037-45d0-a3b4-c25741736b78/bin/uautomizer-verify-BQ2R08f2Ya/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