./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_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_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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_74f75613-5adb-4d94-83da-5bd001995a9e/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 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:51:03,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:51:03,766 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-29 04:51:03,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:51:03,771 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:51:03,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:51:03,794 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:51:03,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:51:03,795 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:51:03,796 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:51:03,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:51:03,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:51:03,798 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:51:03,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:51:03,799 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:51:03,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:51:03,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:51:03,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:51:03,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:51:03,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:51:03,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:51:03,802 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:51:03,803 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:51:03,803 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:51:03,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:51:03,804 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:51:03,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:51:03,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:51:03,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:51:03,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:51:03,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:51:03,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:51:03,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:51:03,808 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:51:03,808 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:51:03,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:51:03,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:51:03,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:51:03,809 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:51:03,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:51:03,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:51:03,810 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_74f75613-5adb-4d94-83da-5bd001995a9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a [2023-11-29 04:51:04,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:51:04,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:51:04,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:51:04,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:51:04,036 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:51:04,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2023-11-29 04:51:06,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:51:07,162 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:51:07,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2023-11-29 04:51:07,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data/4ccf906e1/f757d83f19544b378e8e528fa2647d9e/FLAGcbdfc4303 [2023-11-29 04:51:07,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data/4ccf906e1/f757d83f19544b378e8e528fa2647d9e [2023-11-29 04:51:07,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:51:07,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:51:07,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:51:07,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:51:07,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:51:07,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:51:07" (1/1) ... [2023-11-29 04:51:07,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2461d6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:07, skipping insertion in model container [2023-11-29 04:51:07,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:51:07" (1/1) ... [2023-11-29 04:51:07,274 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:51:07,981 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:51:07,993 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:51:08,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:51:08,236 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:08,236 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:08,236 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:08,236 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:08,236 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:08,242 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:51:08,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08 WrapperNode [2023-11-29 04:51:08,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:51:08,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:51:08,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:51:08,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:51:08,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,300 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 65 [2023-11-29 04:51:08,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:51:08,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:51:08,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:51:08,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:51:08,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,331 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [1, 1, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-11-29 04:51:08,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,339 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:51:08,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:51:08,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:51:08,350 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:51:08,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (1/1) ... [2023-11-29 04:51:08,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:51:08,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:08,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:51:08,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:51:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 04:51:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 04:51:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 04:51:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:51:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-29 04:51:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-29 04:51:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-29 04:51:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:51:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:51:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:51:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:51:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 04:51:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:51:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:51:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:51:08,581 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:51:08,583 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:51:08,697 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:51:08,733 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:51:08,734 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:51:08,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:08 BoogieIcfgContainer [2023-11-29 04:51:08,734 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:51:08,737 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:51:08,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:51:08,741 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:51:08,741 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:51:07" (1/3) ... [2023-11-29 04:51:08,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26402670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:51:08, skipping insertion in model container [2023-11-29 04:51:08,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:08" (2/3) ... [2023-11-29 04:51:08,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26402670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:51:08, skipping insertion in model container [2023-11-29 04:51:08,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:08" (3/3) ... [2023-11-29 04:51:08,744 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2023-11-29 04:51:08,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:51:08,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:51:08,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:51:08,812 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;@7258f43f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:51:08,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:51:08,816 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 04:51:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 04:51:08,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:51:08,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:08,825 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 04:51:08,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1406535200, now seen corresponding path program 1 times [2023-11-29 04:51:08,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:08,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368216852] [2023-11-29 04:51:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:08,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:51:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:09,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:51:09,037 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:51:09,038 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 04:51:09,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 04:51:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:51:09,044 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 04:51:09,049 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:51:09,065 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-11-29 04:51:09,068 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post104 could not be translated [2023-11-29 04:51:09,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:51:09 BoogieIcfgContainer [2023-11-29 04:51:09,077 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:51:09,077 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:51:09,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:51:09,078 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:51:09,078 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:08" (3/4) ... [2023-11-29 04:51:09,081 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:51:09,082 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:51:09,083 INFO L158 Benchmark]: Toolchain (without parser) took 1877.75ms. Allocated memory was 153.1MB in the beginning and 211.8MB in the end (delta: 58.7MB). Free memory was 112.0MB in the beginning and 122.9MB in the end (delta: -10.9MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2023-11-29 04:51:09,084 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:51:09,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1036.52ms. Allocated memory was 153.1MB in the beginning and 211.8MB in the end (delta: 58.7MB). Free memory was 111.8MB in the beginning and 162.8MB in the end (delta: -51.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2023-11-29 04:51:09,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.54ms. Allocated memory is still 211.8MB. Free memory was 162.8MB in the beginning and 159.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:51:09,086 INFO L158 Benchmark]: Boogie Preprocessor took 46.51ms. Allocated memory is still 211.8MB. Free memory was 159.6MB in the beginning and 156.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:51:09,086 INFO L158 Benchmark]: RCFGBuilder took 385.27ms. Allocated memory is still 211.8MB. Free memory was 156.5MB in the beginning and 140.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 04:51:09,087 INFO L158 Benchmark]: TraceAbstraction took 339.35ms. Allocated memory is still 211.8MB. Free memory was 139.7MB in the beginning and 122.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:51:09,088 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 211.8MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:51:09,091 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 104.9MB. Free memory is still 50.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1036.52ms. Allocated memory was 153.1MB in the beginning and 211.8MB in the end (delta: 58.7MB). Free memory was 111.8MB in the beginning and 162.8MB in the end (delta: -51.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.54ms. Allocated memory is still 211.8MB. Free memory was 162.8MB in the beginning and 159.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.51ms. Allocated memory is still 211.8MB. Free memory was 159.6MB in the beginning and 156.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 385.27ms. Allocated memory is still 211.8MB. Free memory was 156.5MB in the beginning and 140.7MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 339.35ms. Allocated memory is still 211.8MB. Free memory was 139.7MB in the beginning and 122.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 211.8MB. Free memory is still 122.9MB. 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~post104 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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of large string literal at line 1573. 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); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1549] int CWE191_Integer_Underflow__int_fgets_postdec_68_goodG2BData; [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_68_goodG2BData=0, 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) [L1573] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_postdec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] CWE191_Integer_Underflow__int_fgets_postdec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_postdec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1585] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: 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, 0.0s 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 04:51:09,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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_74f75613-5adb-4d94-83da-5bd001995a9e/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 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:51:11,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:51:11,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-29 04:51:11,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:51:11,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:51:11,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-29 04:51:11,211 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:51:11,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:51:11,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:51:11,213 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:51:11,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:51:11,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:51:11,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:51:11,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:51:11,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:51:11,216 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:51:11,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:51:11,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:51:11,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:51:11,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:51:11,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:51:11,220 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:51:11,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:51:11,221 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:51:11,221 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 04:51:11,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:51:11,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:51:11,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:51:11,223 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:51:11,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:51:11,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:51:11,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:51:11,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:51:11,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:51:11,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:51:11,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:51:11,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:51:11,225 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:51:11,226 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:51:11,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:51:11,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:51:11,226 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:51:11,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:51:11,227 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:51:11,227 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:51:11,227 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_74f75613-5adb-4d94-83da-5bd001995a9e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2114354133268dfafe9d28136595d928edb01ed818db8ce52e2a575acd455d7a [2023-11-29 04:51:11,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:51:11,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:51:11,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:51:11,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:51:11,552 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:51:11,553 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2023-11-29 04:51:14,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:51:14,703 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:51:14,704 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2023-11-29 04:51:14,730 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data/e125df42b/bfff2f0bc0684bd985f8145db3a4cbb5/FLAGbb0f52554 [2023-11-29 04:51:14,745 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/data/e125df42b/bfff2f0bc0684bd985f8145db3a4cbb5 [2023-11-29 04:51:14,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:51:14,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:51:14,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:51:14,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:51:14,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:51:14,756 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:51:14" (1/1) ... [2023-11-29 04:51:14,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf2711b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:14, skipping insertion in model container [2023-11-29 04:51:14,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:51:14" (1/1) ... [2023-11-29 04:51:14,816 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:51:15,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:51:15,575 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:51:15,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:51:15,803 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:15,803 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:15,803 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:15,804 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:15,804 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:51:15,811 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:51:15,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15 WrapperNode [2023-11-29 04:51:15,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:51:15,813 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:51:15,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:51:15,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:51:15,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,876 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2023-11-29 04:51:15,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:51:15,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:51:15,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:51:15,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:51:15,893 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,913 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [1, 1, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0]. The 2 writes are split as follows [0, 0, 2]. [2023-11-29 04:51:15,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,926 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:51:15,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:51:15,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:51:15,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:51:15,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (1/1) ... [2023-11-29 04:51:15,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:51:15,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:51:15,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:51:15,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-29 04:51:15,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:51:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:51:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-29 04:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-29 04:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-29 04:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-29 04:51:16,158 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:51:16,160 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:51:16,286 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:51:16,325 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:51:16,325 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:51:16,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:16 BoogieIcfgContainer [2023-11-29 04:51:16,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:51:16,328 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:51:16,328 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:51:16,331 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:51:16,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:51:14" (1/3) ... [2023-11-29 04:51:16,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05f18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:51:16, skipping insertion in model container [2023-11-29 04:51:16,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:51:15" (2/3) ... [2023-11-29 04:51:16,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05f18e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:51:16, skipping insertion in model container [2023-11-29 04:51:16,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:16" (3/3) ... [2023-11-29 04:51:16,334 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_68_bad.i [2023-11-29 04:51:16,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:51:16,353 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 04:51:16,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:51:16,401 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;@6106e80b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:51:16,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 04:51:16,405 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 04:51:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 04:51:16,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:51:16,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:16,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-29 04:51:16,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1406535200, now seen corresponding path program 1 times [2023-11-29 04:51:16,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:51:16,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484964813] [2023-11-29 04:51:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:16,427 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 04:51:16,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:51:16,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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 04:51:16,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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 04:51:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:16,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:51:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:51:16,656 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 04:51:16,657 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 04:51:16,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-29 04:51:16,660 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-29 04:51:16,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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 04:51:16,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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 04:51:16,865 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-29 04:51:16,868 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:51:16,882 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-11-29 04:51:16,885 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post102 could not be translated [2023-11-29 04:51:16,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:51:16 BoogieIcfgContainer [2023-11-29 04:51:16,891 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:51:16,892 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:51:16,892 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:51:16,892 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:51:16,893 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:51:16" (3/4) ... [2023-11-29 04:51:16,894 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:51:16,895 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:51:16,896 INFO L158 Benchmark]: Toolchain (without parser) took 2146.78ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 54.8MB in the beginning and 82.7MB in the end (delta: -27.9MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-29 04:51:16,896 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory was 58.2MB in the beginning and 58.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:51:16,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1062.00ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 54.6MB in the beginning and 61.0MB in the end (delta: -6.4MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2023-11-29 04:51:16,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.45ms. Allocated memory is still 115.3MB. Free memory was 61.0MB in the beginning and 57.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:51:16,898 INFO L158 Benchmark]: Boogie Preprocessor took 60.06ms. Allocated memory is still 115.3MB. Free memory was 57.9MB in the beginning and 86.3MB in the end (delta: -28.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2023-11-29 04:51:16,899 INFO L158 Benchmark]: RCFGBuilder took 387.83ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 68.3MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:51:16,900 INFO L158 Benchmark]: TraceAbstraction took 563.41ms. Allocated memory is still 115.3MB. Free memory was 68.0MB in the beginning and 83.0MB in the end (delta: -15.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 04:51:16,900 INFO L158 Benchmark]: Witness Printer took 3.21ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 82.7MB in the end (delta: 225.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:51:16,904 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory was 58.2MB in the beginning and 58.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1062.00ms. Allocated memory was 81.8MB in the beginning and 115.3MB in the end (delta: 33.6MB). Free memory was 54.6MB in the beginning and 61.0MB in the end (delta: -6.4MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.45ms. Allocated memory is still 115.3MB. Free memory was 61.0MB in the beginning and 57.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.06ms. Allocated memory is still 115.3MB. Free memory was 57.9MB in the beginning and 86.3MB in the end (delta: -28.3MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * RCFGBuilder took 387.83ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 68.3MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 563.41ms. Allocated memory is still 115.3MB. Free memory was 68.0MB in the beginning and 83.0MB in the end (delta: -15.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 3.21ms. Allocated memory is still 115.3MB. Free memory was 83.0MB in the beginning and 82.7MB in the end (delta: 225.1kB). 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~post102 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: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560, overapproximation of large string literal at line 1573. 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); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1550] int CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData; [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData=0, 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) [L1573] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=0, CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData=0, 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] [L1574] CALL CWE191_Integer_Underflow__int_fgets_postdec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] CWE191_Integer_Underflow__int_fgets_postdec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_postdec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_postdec_68_badData; [L1585] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_postdec_68_goodB2GData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: 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, 0.0s 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 04:51:16,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f75613-5adb-4d94-83da-5bd001995a9e/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