./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_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_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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_70bda706-0edd-48a8-b623-f2343a7bd9e1/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 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:45:59,034 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:45:59,170 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 04:45:59,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:45:59,180 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:45:59,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:45:59,222 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:45:59,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:45:59,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:45:59,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:45:59,227 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:45:59,227 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:45:59,228 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:45:59,228 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:45:59,229 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:45:59,229 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:45:59,230 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:45:59,231 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:45:59,231 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:45:59,232 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:45:59,232 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:45:59,237 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:45:59,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:45:59,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:45:59,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:45:59,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:45:59,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:45:59,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:45:59,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:45:59,241 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:45:59,242 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:45:59,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:45:59,243 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:45:59,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:45:59,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:45:59,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:45:59,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:45:59,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:45:59,244 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:45:59,244 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:45:59,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:45:59,245 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:45:59,245 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:45:59,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:45:59,246 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_70bda706-0edd-48a8-b623-f2343a7bd9e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 [2023-11-19 04:45:59,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:45:59,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:45:59,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:45:59,636 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:45:59,637 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:45:59,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2023-11-19 04:46:02,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:03,334 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:03,335 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2023-11-19 04:46:03,362 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data/e4fbfe4e8/895e18247ae148a08a8d7945e2467c05/FLAG71b2b6e67 [2023-11-19 04:46:03,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data/e4fbfe4e8/895e18247ae148a08a8d7945e2467c05 [2023-11-19 04:46:03,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:03,390 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:03,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:03,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:03,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:03,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:03" (1/1) ... [2023-11-19 04:46:03,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adcf45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:03, skipping insertion in model container [2023-11-19 04:46:03,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:03" (1/1) ... [2023-11-19 04:46:03,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:03,924 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:04,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:04,625 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:04,670 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:04,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:04,947 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:04,954 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:04,954 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:04,956 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:04,956 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:04,956 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:04,965 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:04,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04 WrapperNode [2023-11-19 04:46:04,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:04,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:04,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:04,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:04,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,031 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2023-11-19 04:46:05,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:05,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:05,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:05,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:05,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:05,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:05,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:05,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:05,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (1/1) ... [2023-11-19 04:46:05,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:05,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:05,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:46:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:46:05,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:46:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:46:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:05,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:05,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:46:05,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:46:05,380 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:05,383 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:05,510 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:05,548 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:05,548 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:46:05,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:05 BoogieIcfgContainer [2023-11-19 04:46:05,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:05,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:05,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:05,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:05,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:03" (1/3) ... [2023-11-19 04:46:05,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f96b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:05, skipping insertion in model container [2023-11-19 04:46:05,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:04" (2/3) ... [2023-11-19 04:46:05,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f96b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:05, skipping insertion in model container [2023-11-19 04:46:05,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:05" (3/3) ... [2023-11-19 04:46:05,570 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2023-11-19 04:46:05,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:05,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:46:05,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:05,640 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;@3fa445c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:05,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:46:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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 04:46:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:46:05,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:05,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:05,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:46:05,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash -39611802, now seen corresponding path program 1 times [2023-11-19 04:46:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:46:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389755104] [2023-11-19 04:46:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:46:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:05,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:46:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:05,868 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:46:05,870 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:46:05,871 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 04:46:05,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 04:46:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:46:05,878 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:46:05,883 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:46:05,910 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated [2023-11-19 04:46:05,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:46:05 BoogieIcfgContainer [2023-11-19 04:46:05,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:46:05,920 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:46:05,920 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:46:05,921 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:46:05,921 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:05" (3/4) ... [2023-11-19 04:46:05,924 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:46:05,925 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:46:05,926 INFO L158 Benchmark]: Toolchain (without parser) took 2542.17ms. Allocated memory is still 159.4MB. Free memory was 121.8MB in the beginning and 71.9MB in the end (delta: 49.9MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-19 04:46:05,927 INFO L158 Benchmark]: CDTParser took 1.32ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:05,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1573.99ms. Allocated memory is still 159.4MB. Free memory was 121.1MB in the beginning and 109.7MB in the end (delta: 11.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-19 04:46:05,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.03ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 106.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:46:05,929 INFO L158 Benchmark]: Boogie Preprocessor took 34.05ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 105.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:05,930 INFO L158 Benchmark]: RCFGBuilder took 485.27ms. Allocated memory is still 159.4MB. Free memory was 104.4MB in the beginning and 89.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:46:05,931 INFO L158 Benchmark]: TraceAbstraction took 364.62ms. Allocated memory is still 159.4MB. Free memory was 89.7MB in the beginning and 71.9MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:46:05,931 INFO L158 Benchmark]: Witness Printer took 4.95ms. Allocated memory is still 159.4MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:05,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.32ms. Allocated memory is still 113.2MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1573.99ms. Allocated memory is still 159.4MB. Free memory was 121.1MB in the beginning and 109.7MB in the end (delta: 11.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.03ms. Allocated memory is still 159.4MB. Free memory was 109.7MB in the beginning and 106.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.05ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 105.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 485.27ms. Allocated memory is still 159.4MB. Free memory was 104.4MB in the beginning and 89.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 364.62ms. Allocated memory is still 159.4MB. Free memory was 89.7MB in the beginning and 71.9MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.95ms. Allocated memory is still 159.4MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post101 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 0; [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, argv={1073741828:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal) [L1582] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 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 04:46:05,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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_70bda706-0edd-48a8-b623-f2343a7bd9e1/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 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:46:08,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:46:08,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-19 04:46:08,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:46:08,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:46:09,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:46:09,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:46:09,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:46:09,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:46:09,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:46:09,037 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:46:09,037 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:46:09,038 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:46:09,039 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:46:09,040 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:46:09,040 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:46:09,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:46:09,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:46:09,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:46:09,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:46:09,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:46:09,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:46:09,045 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:46:09,045 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:46:09,046 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:46:09,046 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:46:09,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:46:09,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:46:09,047 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:46:09,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:46:09,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:46:09,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:46:09,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:09,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:46:09,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:46:09,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:46:09,051 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:46:09,051 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:46:09,051 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:46:09,052 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:46:09,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:46:09,053 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_70bda706-0edd-48a8-b623-f2343a7bd9e1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd2ebae3e4efedbc7c5167fcbd380e697a52b1008674458a69e2697e3b8a545 [2023-11-19 04:46:09,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:46:09,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:46:09,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:46:09,491 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:46:09,492 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:46:09,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2023-11-19 04:46:12,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:46:13,297 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:46:13,301 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2023-11-19 04:46:13,329 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data/e7341f233/789b4af18bee48aab6a7a7c60de68c0b/FLAG1989b55a6 [2023-11-19 04:46:13,347 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/data/e7341f233/789b4af18bee48aab6a7a7c60de68c0b [2023-11-19 04:46:13,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:46:13,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:46:13,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:13,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:46:13,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:46:13,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac14d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:13, skipping insertion in model container [2023-11-19 04:46:13,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:46:13" (1/1) ... [2023-11-19 04:46:13,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:46:13,944 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:14,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:14,614 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:46:14,656 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 04:46:14,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:46:15,006 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:15,006 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:15,007 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:15,007 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:15,007 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:15,007 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:46:15,016 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:46:15,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15 WrapperNode [2023-11-19 04:46:15,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:46:15,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:15,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:46:15,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:46:15,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,157 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-19 04:46:15,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:46:15,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:46:15,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:46:15,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:46:15,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,187 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:46:15,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:46:15,226 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:46:15,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:46:15,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (1/1) ... [2023-11-19 04:46:15,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:46:15,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:46:15,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:46:15,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:46:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 04:46:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 04:46:15,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 04:46:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:46:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:46:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:46:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:46:15,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:46:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:46:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 04:46:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 04:46:15,525 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:46:15,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:46:15,781 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:46:15,797 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:46:15,798 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:46:15,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:15 BoogieIcfgContainer [2023-11-19 04:46:15,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:46:15,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:46:15,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:46:15,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:46:15,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:46:13" (1/3) ... [2023-11-19 04:46:15,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a636458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:15, skipping insertion in model container [2023-11-19 04:46:15,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:46:15" (2/3) ... [2023-11-19 04:46:15,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a636458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:46:15, skipping insertion in model container [2023-11-19 04:46:15,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:15" (3/3) ... [2023-11-19 04:46:15,822 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_22_bad.i [2023-11-19 04:46:15,848 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:46:15,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:46:15,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:46:15,949 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;@8c31151, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:46:15,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:46:15,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 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 04:46:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:46:15,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:46:15,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:46:15,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 04:46:15,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:46:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash 252523526, now seen corresponding path program 1 times [2023-11-19 04:46:16,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:46:16,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91435184] [2023-11-19 04:46:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:46:16,007 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 04:46:16,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:46:16,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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 04:46:16,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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 04:46:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:16,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:46:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:46:16,376 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 04:46:16,378 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:46:16,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 04:46:16,386 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 04:46:16,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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 04:46:16,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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 04:46:16,596 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:46:16,606 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:46:16,649 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated [2023-11-19 04:46:16,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:46:16 BoogieIcfgContainer [2023-11-19 04:46:16,667 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:46:16,669 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:46:16,669 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:46:16,669 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:46:16,670 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:46:15" (3/4) ... [2023-11-19 04:46:16,673 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:46:16,674 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:46:16,676 INFO L158 Benchmark]: Toolchain (without parser) took 3323.66ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 39.3MB in the beginning and 44.5MB in the end (delta: -5.2MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2023-11-19 04:46:16,677 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 67.1MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:16,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1663.88ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 39.1MB in the beginning and 58.0MB in the end (delta: -18.9MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2023-11-19 04:46:16,687 INFO L158 Benchmark]: Boogie Procedure Inliner took 139.53ms. Allocated memory is still 88.1MB. Free memory was 58.0MB in the beginning and 54.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:46:16,688 INFO L158 Benchmark]: Boogie Preprocessor took 66.70ms. Allocated memory is still 88.1MB. Free memory was 54.7MB in the beginning and 53.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:16,690 INFO L158 Benchmark]: RCFGBuilder took 579.43ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 38.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:46:16,691 INFO L158 Benchmark]: TraceAbstraction took 857.16ms. Allocated memory is still 88.1MB. Free memory was 38.3MB in the beginning and 44.5MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:16,692 INFO L158 Benchmark]: Witness Printer took 5.53ms. Allocated memory is still 88.1MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:46:16,696 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 67.1MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1663.88ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 39.1MB in the beginning and 58.0MB in the end (delta: -18.9MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 139.53ms. Allocated memory is still 88.1MB. Free memory was 58.0MB in the beginning and 54.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.70ms. Allocated memory is still 88.1MB. Free memory was 54.7MB in the beginning and 53.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 579.43ms. Allocated memory is still 88.1MB. Free memory was 52.6MB in the beginning and 38.7MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 857.16ms. Allocated memory is still 88.1MB. Free memory was 38.3MB in the beginning and 44.5MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.53ms. Allocated memory is still 88.1MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post99 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: 1582]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] int CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 0; VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=0, 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] [L1572] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_bad() [L1552] int data; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal = 1 [L1566] CALL CWE191_Integer_Underflow__int_fgets_postdec_22_badSink(data) [L1579] COND TRUE \read(CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal) [L1582] data-- VAL [CWE191_Integer_Underflow__int_fgets_postdec_22_badGlobal=1, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1582]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=24occurred 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, 12 NumberOfCodeBlocks, 12 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 04:46:16,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70bda706-0edd-48a8-b623-f2343a7bd9e1/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