./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:03:24,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:03:24,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-06 22:03:24,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:03:24,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:03:24,774 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:03:24,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:03:24,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:03:24,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:03:24,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:03:24,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:03:24,779 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:03:24,779 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:03:24,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:03:24,786 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:03:24,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:03:24,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:03:24,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:03:24,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:03:24,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:03:24,792 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:03:24,793 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:03:24,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:03:24,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:03:24,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:03:24,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:03:24,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:03:24,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:24,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:03:24,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:03:24,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:03:24,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:03:24,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:03:24,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:03:24,800 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:03:24,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:03:24,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:03:24,801 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:03:24,802 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_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc [2023-11-06 22:03:25,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:03:25,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:03:25,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:03:25,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:03:25,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:03:25,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2023-11-06 22:03:28,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:03:28,862 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:03:28,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2023-11-06 22:03:28,892 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data/c071c6b8c/fcd38d48b0c24eb68638a6cbc8861422/FLAG05351d7fc [2023-11-06 22:03:28,909 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data/c071c6b8c/fcd38d48b0c24eb68638a6cbc8861422 [2023-11-06 22:03:28,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:03:28,914 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:03:28,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:28,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:03:28,922 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:03:28,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:28" (1/1) ... [2023-11-06 22:03:28,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2261f72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:28, skipping insertion in model container [2023-11-06 22:03:28,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:28" (1/1) ... [2023-11-06 22:03:28,987 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:03:29,440 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:03:30,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:30,157 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:03:30,193 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:03:30,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:30,473 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:30,473 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:30,473 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:30,473 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:30,474 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:30,474 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:30,482 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:03:30,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30 WrapperNode [2023-11-06 22:03:30,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:30,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:30,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:03:30,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:03:30,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,520 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,547 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-11-06 22:03:30,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:30,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:03:30,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:03:30,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:03:30,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,582 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:03:30,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:03:30,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:03:30,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:03:30,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (1/1) ... [2023-11-06 22:03:30,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:30,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:03:30,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:03:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-06 22:03:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-06 22:03:30,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-06 22:03:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:03:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:03:30,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 22:03:30,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:03:30,844 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:03:30,846 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:03:31,040 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:03:31,048 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:03:31,049 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:03:31,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:31 BoogieIcfgContainer [2023-11-06 22:03:31,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:03:31,055 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:03:31,055 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:03:31,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:03:31,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:28" (1/3) ... [2023-11-06 22:03:31,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5776ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:31, skipping insertion in model container [2023-11-06 22:03:31,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:30" (2/3) ... [2023-11-06 22:03:31,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5776ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:31, skipping insertion in model container [2023-11-06 22:03:31,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:31" (3/3) ... [2023-11-06 22:03:31,063 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2023-11-06 22:03:31,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:03:31,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:03:31,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:03:31,153 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=LoopsAndPotentialCycles, 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;@6488a06e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:03:31,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:03:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:03:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:03:31,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:03:31,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:31,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 22:03:31,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:31,175 INFO L85 PathProgramCache]: Analyzing trace with hash -851769054, now seen corresponding path program 1 times [2023-11-06 22:03:31,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:31,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376571193] [2023-11-06 22:03:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:03:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376571193] [2023-11-06 22:03:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376571193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:31,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:31,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:03:31,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446132123] [2023-11-06 22:03:31,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:31,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:31,681 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:03:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:03:31,727 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2023-11-06 22:03:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:31,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-06 22:03:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:03:31,758 INFO L225 Difference]: With dead ends: 50 [2023-11-06 22:03:31,758 INFO L226 Difference]: Without dead ends: 18 [2023-11-06 22:03:31,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:31,766 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:03:31,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 59 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:03:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-06 22:03:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-06 22:03:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:03:31,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2023-11-06 22:03:31,805 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2023-11-06 22:03:31,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:03:31,807 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2023-11-06 22:03:31,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:03:31,808 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2023-11-06 22:03:31,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:03:31,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:03:31,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:31,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:03:31,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 22:03:31,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash -933634968, now seen corresponding path program 1 times [2023-11-06 22:03:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:31,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143582272] [2023-11-06 22:03:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:03:31,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:03:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:03:31,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:03:31,917 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:03:31,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-06 22:03:31,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-06 22:03:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:03:31,931 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:03:31,937 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:03:31,976 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch98 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:03:31,978 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch101 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:03:31,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:03:31 BoogieIcfgContainer [2023-11-06 22:03:31,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:03:32,000 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:03:32,000 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:03:32,001 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:03:32,001 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:31" (3/4) ... [2023-11-06 22:03:32,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:03:32,005 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:03:32,005 INFO L158 Benchmark]: Toolchain (without parser) took 3091.94ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 122.3MB in the end (delta: 6.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-11-06 22:03:32,006 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory was 78.1MB in the beginning and 77.9MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:32,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1568.05ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 113.7MB in the end (delta: 15.4MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2023-11-06 22:03:32,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.40ms. Allocated memory is still 167.8MB. Free memory was 113.7MB in the beginning and 111.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:03:32,008 INFO L158 Benchmark]: Boogie Preprocessor took 42.34ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:03:32,008 INFO L158 Benchmark]: RCFGBuilder took 459.80ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 95.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:03:32,009 INFO L158 Benchmark]: TraceAbstraction took 943.20ms. Allocated memory is still 167.8MB. Free memory was 94.9MB in the beginning and 122.3MB in the end (delta: -27.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:32,009 INFO L158 Benchmark]: Witness Printer took 4.74ms. Allocated memory is still 167.8MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:32,013 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory was 78.1MB in the beginning and 77.9MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1568.05ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 113.7MB in the end (delta: 15.4MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.40ms. Allocated memory is still 167.8MB. Free memory was 113.7MB in the beginning and 111.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.34ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 459.80ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 95.7MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 943.20ms. Allocated memory is still 167.8MB. Free memory was 94.9MB in the beginning and 122.3MB in the end (delta: -27.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.74ms. Allocated memory is still 167.8MB. Free memory is still 122.3MB. 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: Expression #t~switch98 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch101 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - 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: 1575]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1588] 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={6:0}] [L1414] COND TRUE line != ((void *)0) [L1588] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741830, argc=1073741830, argv={1073741826:1073741831}, argv={1073741826:1073741831}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1589] CALL CWE191_Integer_Underflow__int_fgets_postdec_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] EXPR data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555-L1565] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [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] [L1573] case 7: [L1575] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data--=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1575]: 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, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 33 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-06 22:03:32,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:03:34,747 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:03:34,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-06 22:03:34,908 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:03:34,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:03:34,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-06 22:03:34,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:03:34,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:03:34,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:03:34,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:03:34,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:03:34,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:03:34,974 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:03:34,976 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:03:34,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:03:34,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:03:34,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:03:34,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:03:34,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:03:34,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:03:34,981 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:03:34,981 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:03:34,982 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:03:34,982 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:03:34,983 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:03:34,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:03:34,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:03:34,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:03:34,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:03:34,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:03:34,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:34,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:03:34,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:03:34,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:03:34,989 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:03:34,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:03:34,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:03:34,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:03:34,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:03:34,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:03:34,991 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:03:34,992 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:03:34,992 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_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f07a5f5352d278fa4748e804a61be96cfd77883de91706beeef2d198aa8c0efc [2023-11-06 22:03:35,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:03:35,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:03:35,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:03:35,417 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:03:35,418 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:03:35,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2023-11-06 22:03:38,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:03:39,216 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:03:39,220 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2023-11-06 22:03:39,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data/824efa032/1cd785d06d564f2f8555be886b50b577/FLAGa09173189 [2023-11-06 22:03:39,287 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/data/824efa032/1cd785d06d564f2f8555be886b50b577 [2023-11-06 22:03:39,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:03:39,295 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:03:39,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:39,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:03:39,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:03:39,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:39" (1/1) ... [2023-11-06 22:03:39,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df655c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39, skipping insertion in model container [2023-11-06 22:03:39,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:39" (1/1) ... [2023-11-06 22:03:39,402 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:03:39,985 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:03:40,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:40,943 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:03:40,965 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:03:41,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:41,161 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:41,161 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:41,162 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:41,162 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:41,162 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:41,162 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:41,168 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:03:41,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41 WrapperNode [2023-11-06 22:03:41,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:41,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:41,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:03:41,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:03:41,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,251 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2023-11-06 22:03:41,252 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:41,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:03:41,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:03:41,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:03:41,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,268 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,268 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,308 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,315 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:03:41,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:03:41,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:03:41,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:03:41,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (1/1) ... [2023-11-06 22:03:41,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:41,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:03:41,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:03:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-06 22:03:41,435 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-06 22:03:41,435 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-06 22:03:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:03:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:03:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:03:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:03:41,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:03:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:03:41,439 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 22:03:41,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-06 22:03:41,612 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:03:41,614 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:03:41,888 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:03:41,895 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:03:41,895 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:03:41,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:41 BoogieIcfgContainer [2023-11-06 22:03:41,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:03:41,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:03:41,928 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:03:41,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:03:41,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:39" (1/3) ... [2023-11-06 22:03:41,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712391a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:41, skipping insertion in model container [2023-11-06 22:03:41,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:41" (2/3) ... [2023-11-06 22:03:41,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712391a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:41, skipping insertion in model container [2023-11-06 22:03:41,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:41" (3/3) ... [2023-11-06 22:03:41,934 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_15_bad.i [2023-11-06 22:03:41,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:03:41,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:03:42,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:03:42,035 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=LoopsAndPotentialCycles, 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;@7908d3d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:03:42,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:03:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 22:03:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:03:42,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:03:42,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:42,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 22:03:42,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -851769054, now seen corresponding path program 1 times [2023-11-06 22:03:42,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:03:42,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281852122] [2023-11-06 22:03:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:42,073 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 [2023-11-06 22:03:42,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:03:42,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:03:42,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:03:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:42,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:03:42,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:03:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:42,305 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:03:42,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:03:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281852122] [2023-11-06 22:03:42,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281852122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:42,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:42,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:03:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771767446] [2023-11-06 22:03:42,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:42,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:42,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:03:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:42,375 INFO L87 Difference]: Start difference. First operand has 30 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 states have internal predecessors, (29), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:03:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:03:42,425 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2023-11-06 22:03:42,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:42,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-06 22:03:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:03:42,437 INFO L225 Difference]: With dead ends: 49 [2023-11-06 22:03:42,438 INFO L226 Difference]: Without dead ends: 16 [2023-11-06 22:03:42,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:42,447 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:03:42,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:03:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-06 22:03:42,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-06 22:03:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:03:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-06 22:03:42,491 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2023-11-06 22:03:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:03:42,493 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-06 22:03:42,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 22:03:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-11-06 22:03:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:03:42,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:03:42,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:42,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:03:42,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:03:42,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 22:03:42,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:42,714 INFO L85 PathProgramCache]: Analyzing trace with hash -933634968, now seen corresponding path program 1 times [2023-11-06 22:03:42,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:03:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13519001] [2023-11-06 22:03:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:42,719 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 [2023-11-06 22:03:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:03:42,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:03:42,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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 (3)] Waiting until timeout for monitored process [2023-11-06 22:03:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:03:42,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:03:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:03:42,977 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 22:03:42,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:03:42,987 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-06 22:03:42,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-06 22:03:43,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:03:43,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:03:43,207 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:03:43,210 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:03:43,241 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch96 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:03:43,242 WARN L1553 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch99 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2023-11-06 22:03:43,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:03:43 BoogieIcfgContainer [2023-11-06 22:03:43,251 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:03:43,252 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:03:43,252 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:03:43,253 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:03:43,253 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:41" (3/4) ... [2023-11-06 22:03:43,256 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:03:43,257 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:03:43,258 INFO L158 Benchmark]: Toolchain (without parser) took 3963.42ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 64.7MB in the beginning and 80.7MB in the end (delta: -16.0MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-11-06 22:03:43,259 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:43,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1870.99ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 55.7MB in the end (delta: 8.7MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2023-11-06 22:03:43,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.54ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 52.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:03:43,261 INFO L158 Benchmark]: Boogie Preprocessor took 63.02ms. Allocated memory is still 92.3MB. Free memory was 52.4MB in the beginning and 50.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:03:43,261 INFO L158 Benchmark]: RCFGBuilder took 594.89ms. Allocated memory is still 92.3MB. Free memory was 50.3MB in the beginning and 64.0MB in the end (delta: -13.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-06 22:03:43,262 INFO L158 Benchmark]: TraceAbstraction took 1323.83ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 63.4MB in the beginning and 81.4MB in the end (delta: -17.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-06 22:03:43,263 INFO L158 Benchmark]: Witness Printer took 5.30ms. Allocated memory is still 111.1MB. Free memory was 81.4MB in the beginning and 80.7MB in the end (delta: 668.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:03:43,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 44.9MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1870.99ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 55.7MB in the end (delta: 8.7MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.54ms. Allocated memory is still 92.3MB. Free memory was 55.7MB in the beginning and 52.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.02ms. Allocated memory is still 92.3MB. Free memory was 52.4MB in the beginning and 50.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.89ms. Allocated memory is still 92.3MB. Free memory was 50.3MB in the beginning and 64.0MB in the end (delta: -13.6MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1323.83ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 63.4MB in the beginning and 81.4MB in the end (delta: -17.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 5.30ms. Allocated memory is still 111.1MB. Free memory was 81.4MB in the beginning and 80.7MB in the end (delta: 668.5kB). 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: Expression #t~switch96 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch99 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - 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: 1575]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1588] 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={6:0}] [L1414] COND TRUE line != ((void *)0) [L1588] 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}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1589] CALL CWE191_Integer_Underflow__int_fgets_postdec_15_bad() [L1550] int data; [L1551] data = 0 [L1554] case 6: [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] EXPR data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555-L1565] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [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] [L1573] case 7: [L1575] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data--=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1575]: 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, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-06 22:03:43,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_103ffd2d-a758-4bff-be17-e9448c92f181/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample