./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d974245eab3df2f35460010efb4b040318bb30179282ebcb7b5719dec2a7c23b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:40,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:40,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:46:40,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:40,357 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:40,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:40,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:40,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:40,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:40,422 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:40,423 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:40,423 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:40,424 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:40,426 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:46:40,426 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:40,426 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:40,427 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:46:40,427 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:46:40,428 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:40,428 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:46:40,429 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:46:40,429 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:46:40,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:40,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:46:40,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:46:40,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:40,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:46:40,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:40,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:46:40,434 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:46:40,435 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:40,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:46:40,436 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:40,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:40,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:40,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:40,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:40,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:40,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:46:40,438 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:46:40,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:46:40,448 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:46:40,448 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:40,448 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:40,449 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d974245eab3df2f35460010efb4b040318bb30179282ebcb7b5719dec2a7c23b [2023-11-19 04:46:40,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:40,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:40,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:40,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:40,822 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:40,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i [2023-11-19 04:46:43,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:44,355 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:44,357 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i [2023-11-19 04:46:44,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data/9a809e527/6d83e587109f4403b49f96e8d7d234c2/FLAG722c0d6ba [2023-11-19 04:46:44,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data/9a809e527/6d83e587109f4403b49f96e8d7d234c2 [2023-11-19 04:46:44,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:44,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:44,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:44,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:44,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:44,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:44" (1/1) ... [2023-11-19 04:46:44,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36336a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:44, skipping insertion in model container [2023-11-19 04:46:44,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:44" (1/1) ... [2023-11-19 04:46:44,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:45,021 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:45,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:45,605 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:45,626 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:45,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:45,872 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:45,872 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:45,873 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:45,873 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:45,873 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:45,873 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:45,897 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:45,898 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45 WrapperNode [2023-11-19 04:46:45,898 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:45,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:45,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:45,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:45,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:45,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,027 INFO L138 Inliner]: procedures = 501, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2023-11-19 04:46:46,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:46,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:46,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:46,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:46,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,049 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:46,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:46,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:46,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:46,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (1/1) ... [2023-11-19 04:46:46,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:46,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:46,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:46,146 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:46:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:46:46,147 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:46:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:46:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:46:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:46,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:46,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:46,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:46,148 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:46:46,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:46:46,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:46:46,312 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:46,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:46,458 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:46,526 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:46,527 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:46:46,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:46 BoogieIcfgContainer [2023-11-19 04:46:46,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:46,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:46,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:46,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:46,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:44" (1/3) ... [2023-11-19 04:46:46,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7e04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:46, skipping insertion in model container [2023-11-19 04:46:46,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:45" (2/3) ... [2023-11-19 04:46:46,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f7e04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:46, skipping insertion in model container [2023-11-19 04:46:46,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:46" (3/3) ... [2023-11-19 04:46:46,552 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i [2023-11-19 04:46:46,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:46,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:46:46,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:46,627 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b9f4c4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:46,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:46:46,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:46:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:46:46,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:46,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:46,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:46:46,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1634006193, now seen corresponding path program 1 times [2023-11-19 04:46:46,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:46,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811905757] [2023-11-19 04:46:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:46,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:46:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:47,043 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:46:47,045 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:46:47,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 04:46:47,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 04:46:47,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:46:47,056 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:46:47,061 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:46:47,083 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post102 could not be translated [2023-11-19 04:46:47,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:46:47 BoogieIcfgContainer [2023-11-19 04:46:47,092 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:46:47,093 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:46:47,093 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:46:47,094 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:46:47,094 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:46" (3/4) ... [2023-11-19 04:46:47,096 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:46:47,099 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:46:47,101 INFO L158 Benchmark]: Toolchain (without parser) took 2686.79ms. Allocated memory is still 169.9MB. Free memory was 137.3MB in the beginning and 89.5MB in the end (delta: 47.8MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2023-11-19 04:46:47,101 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:47,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1483.15ms. Allocated memory is still 169.9MB. Free memory was 137.3MB in the beginning and 130.5MB in the end (delta: 6.8MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-11-19 04:46:47,103 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.07ms. Allocated memory is still 169.9MB. Free memory was 130.5MB in the beginning and 127.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:46:47,103 INFO L158 Benchmark]: Boogie Preprocessor took 36.98ms. Allocated memory is still 169.9MB. Free memory was 127.2MB in the beginning and 126.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:47,104 INFO L158 Benchmark]: RCFGBuilder took 473.51ms. Allocated memory is still 169.9MB. Free memory was 126.1MB in the beginning and 109.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:46:47,105 INFO L158 Benchmark]: TraceAbstraction took 549.41ms. Allocated memory is still 169.9MB. Free memory was 108.4MB in the beginning and 89.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 04:46:47,105 INFO L158 Benchmark]: Witness Printer took 6.30ms. Allocated memory is still 169.9MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:47,108 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 130.0MB. Free memory is still 102.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1483.15ms. Allocated memory is still 169.9MB. Free memory was 137.3MB in the beginning and 130.5MB in the end (delta: 6.8MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.07ms. Allocated memory is still 169.9MB. Free memory was 130.5MB in the beginning and 127.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.98ms. Allocated memory is still 169.9MB. Free memory was 127.2MB in the beginning and 126.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 473.51ms. Allocated memory is still 169.9MB. Free memory was 126.1MB in the beginning and 109.5MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 549.41ms. Allocated memory is still 169.9MB. Free memory was 108.4MB in the beginning and 89.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 6.30ms. Allocated memory is still 169.9MB. Free memory is still 89.5MB. 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: IdentifierExpression #t~post102 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741829, argc=1073741829, argv={1073741832:1073741831}, argv={1073741832:1073741831}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1579]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:46:47,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d974245eab3df2f35460010efb4b040318bb30179282ebcb7b5719dec2a7c23b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:49,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:49,873 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-19 04:46:49,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:49,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:49,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:49,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:49,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:49,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:49,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:49,936 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:49,937 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:49,937 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:49,939 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:49,940 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:49,940 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:49,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:49,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:46:49,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:49,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:46:49,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:49,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:46:49,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:46:49,946 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:46:49,946 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:46:49,946 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:46:49,947 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:49,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:46:49,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:49,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:49,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:46:49,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:49,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:49,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:49,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:49,951 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:46:49,951 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:46:49,952 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:46:49,952 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:46:49,953 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:49,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:49,954 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d974245eab3df2f35460010efb4b040318bb30179282ebcb7b5719dec2a7c23b [2023-11-19 04:46:50,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:50,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:50,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:50,478 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:50,480 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:50,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i [2023-11-19 04:46:53,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:54,103 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:54,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i [2023-11-19 04:46:54,139 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data/526bdd508/67773ef7598b40d5b747d2a6c3ba4bfd/FLAG12b8bfb00 [2023-11-19 04:46:54,159 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/data/526bdd508/67773ef7598b40d5b747d2a6c3ba4bfd [2023-11-19 04:46:54,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:54,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:54,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:54,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:54,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:54,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:54" (1/1) ... [2023-11-19 04:46:54,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371bab8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:54, skipping insertion in model container [2023-11-19 04:46:54,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:54" (1/1) ... [2023-11-19 04:46:54,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:54,680 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:55,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:55,464 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:46:55,481 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:55,492 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:55,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:55,575 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:55,594 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:55,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:55,873 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:55,873 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:55,873 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:55,873 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:55,873 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:55,874 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:55,882 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:55,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55 WrapperNode [2023-11-19 04:46:55,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:55,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:55,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:55,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:55,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:55,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:55,980 INFO L138 Inliner]: procedures = 506, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-11-19 04:46:55,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:55,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:55,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:55,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:55,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:55,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:55,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:55,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:56,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:56,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:56,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:56,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:56,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:56,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:56,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:56,038 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:56,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (1/1) ... [2023-11-19 04:46:56,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:56,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:56,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:56,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:56,133 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:46:56,135 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:46:56,136 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:46:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:46:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:56,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:56,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:46:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:46:56,138 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:46:56,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:46:56,373 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:56,378 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:56,692 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:56,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:56,703 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:46:56,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:56 BoogieIcfgContainer [2023-11-19 04:46:56,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:56,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:56,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:56,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:56,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:54" (1/3) ... [2023-11-19 04:46:56,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcee0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:56, skipping insertion in model container [2023-11-19 04:46:56,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:55" (2/3) ... [2023-11-19 04:46:56,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcee0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:56, skipping insertion in model container [2023-11-19 04:46:56,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:56" (3/3) ... [2023-11-19 04:46:56,720 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_64_bad.i [2023-11-19 04:46:56,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:56,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:46:56,805 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:56,813 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f3f9897, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:56,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:46:56,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 04:46:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:46:56,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:56,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:56,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:46:56,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2023-11-19 04:46:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:46:56,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573318370] [2023-11-19 04:46:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:56,844 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 [2023-11-19 04:46:56,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:46:56,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:46:56,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:46:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:57,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:46:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:57,424 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 04:46:57,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:46:57,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 04:46:57,430 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 04:46:57,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:46:57,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:46:57,635 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:46:57,639 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:46:57,661 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated [2023-11-19 04:46:57,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:46:57 BoogieIcfgContainer [2023-11-19 04:46:57,671 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:46:57,672 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:46:57,672 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:46:57,672 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:46:57,673 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:56" (3/4) ... [2023-11-19 04:46:57,675 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:46:57,676 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:46:57,678 INFO L158 Benchmark]: Toolchain (without parser) took 3511.22ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 53.3MB in the beginning and 64.7MB in the end (delta: -11.3MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-19 04:46:57,678 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:57,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1714.28ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 53.1MB in the beginning and 76.6MB in the end (delta: -23.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-11-19 04:46:57,680 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.15ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 73.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:46:57,681 INFO L158 Benchmark]: Boogie Preprocessor took 55.45ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 71.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:46:57,681 INFO L158 Benchmark]: RCFGBuilder took 670.11ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 55.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:46:57,682 INFO L158 Benchmark]: TraceAbstraction took 960.03ms. Allocated memory is still 109.1MB. Free memory was 54.1MB in the beginning and 65.3MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:57,682 INFO L158 Benchmark]: Witness Printer took 4.93ms. Allocated memory is still 109.1MB. Free memory is still 64.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:57,686 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 81.8MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1714.28ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 53.1MB in the beginning and 76.6MB in the end (delta: -23.5MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.15ms. Allocated memory is still 109.1MB. Free memory was 76.6MB in the beginning and 73.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.45ms. Allocated memory is still 109.1MB. Free memory was 73.7MB in the beginning and 71.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 670.11ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 55.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 960.03ms. Allocated memory is still 109.1MB. Free memory was 54.1MB in the beginning and 65.3MB in the end (delta: -11.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.93ms. Allocated memory is still 109.1MB. Free memory is still 64.7MB. 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: IdentifierExpression #t~post100 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_postdec_64_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_postdec_64b_badSink(&data) [L1576] int * dataPtr = (int *)dataVoidPtr; [L1577] EXPR \read(*dataPtr) [L1577] int data = (*dataPtr); [L1579] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataPtr={6:0}, dataVoidPtr={6:0}, dataVoidPtr={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1579]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:46:57,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1cd255d-90ee-4497-8273-ac893c512ade/bin/utaipan-verify-t7M7D8N6sZ/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