./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX --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 db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:53:54,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:53:54,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:53:54,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:53:54,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:53:54,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:53:54,207 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:53:54,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:53:54,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:53:54,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:53:54,215 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:53:54,216 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:53:54,217 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:53:54,218 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:53:54,219 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:53:54,219 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:53:54,220 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:53:54,220 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:53:54,220 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:53:54,221 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:53:54,223 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:53:54,224 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:53:54,225 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:53:54,225 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:53:54,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:53:54,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:53:54,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:53:54,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:53:54,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:53:54,228 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:53:54,229 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:53:54,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:53:54,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:53:54,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:53:54,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:53:54,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:54,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:53:54,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:53:54,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:53:54,232 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:53:54,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:53:54,232 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:53:54,233 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:53:54,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:53:54,234 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_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a [2023-11-12 00:53:54,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:53:54,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:53:54,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:53:54,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:53:54,551 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:53:54,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-12 00:53:57,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:53:58,186 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:53:58,187 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-12 00:53:58,221 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data/ce3447936/ded00165d2734c11b7948b6a1b214002/FLAG31a0a5523 [2023-11-12 00:53:58,240 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data/ce3447936/ded00165d2734c11b7948b6a1b214002 [2023-11-12 00:53:58,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:53:58,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:53:58,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:58,253 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:53:58,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:53:58,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:58" (1/1) ... [2023-11-12 00:53:58,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341e5086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:58, skipping insertion in model container [2023-11-12 00:53:58,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:53:58" (1/1) ... [2023-11-12 00:53:58,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:53:58,774 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:53:59,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:59,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:53:59,410 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:53:59,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:53:59,674 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:59,675 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:59,675 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:59,675 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:59,675 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:59,675 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:53:59,684 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:53:59,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59 WrapperNode [2023-11-12 00:53:59,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:53:59,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:59,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:53:59,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:53:59,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,787 INFO L138 Inliner]: procedures = 504, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 61 [2023-11-12 00:53:59,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:53:59,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:53:59,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:53:59,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:53:59,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:53:59,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:53:59,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:53:59,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:53:59,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (1/1) ... [2023-11-12 00:53:59,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:53:59,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:53:59,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:53:59,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:53:59,941 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-12 00:53:59,942 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:53:59,944 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:53:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:53:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:53:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:53:59,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:53:59,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:53:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:53:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:53:59,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:54:00,181 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:00,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:00,461 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:00,514 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:00,515 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:54:00,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:00 BoogieIcfgContainer [2023-11-12 00:54:00,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:00,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:00,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:00,525 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:00,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:53:58" (1/3) ... [2023-11-12 00:54:00,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aae7fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:00, skipping insertion in model container [2023-11-12 00:54:00,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:53:59" (2/3) ... [2023-11-12 00:54:00,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aae7fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:00, skipping insertion in model container [2023-11-12 00:54:00,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:00" (3/3) ... [2023-11-12 00:54:00,531 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-12 00:54:00,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:00,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:54:00,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:00,625 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;@35f2d581, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:00,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:54:00,630 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) [2023-11-12 00:54:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:54:00,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:00,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:54:00,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:54:00,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:00,649 INFO L85 PathProgramCache]: Analyzing trace with hash -178044757, now seen corresponding path program 1 times [2023-11-12 00:54:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:54:00,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84222950] [2023-11-12 00:54:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:00,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:54:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:54:00,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:54:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:54:00,990 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:54:00,993 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:54:00,995 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-12 00:54:00,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-12 00:54:00,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:54:01,003 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:54:01,013 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:54:01,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:54:01 BoogieIcfgContainer [2023-11-12 00:54:01,051 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:54:01,051 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:54:01,052 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:54:01,052 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:54:01,053 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:00" (3/4) ... [2023-11-12 00:54:01,055 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:54:01,056 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:54:01,058 INFO L158 Benchmark]: Toolchain (without parser) took 2809.42ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 66.6MB in the beginning and 104.7MB in the end (delta: -38.1MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,058 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:54:01,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1432.96ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 66.4MB in the beginning and 84.8MB in the end (delta: -18.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.59ms. Allocated memory is still 163.6MB. Free memory was 84.8MB in the beginning and 81.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,061 INFO L158 Benchmark]: Boogie Preprocessor took 67.53ms. Allocated memory is still 163.6MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,062 INFO L158 Benchmark]: RCFGBuilder took 661.52ms. Allocated memory is still 163.6MB. Free memory was 79.8MB in the beginning and 122.5MB in the end (delta: -42.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,062 INFO L158 Benchmark]: TraceAbstraction took 530.15ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 105.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,063 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 163.6MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:54:01,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 115.3MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1432.96ms. Allocated memory was 115.3MB in the beginning and 163.6MB in the end (delta: 48.2MB). Free memory was 66.4MB in the beginning and 84.8MB in the end (delta: -18.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.59ms. Allocated memory is still 163.6MB. Free memory was 84.8MB in the beginning and 81.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.53ms. Allocated memory is still 163.6MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 661.52ms. Allocated memory is still 163.6MB. Free memory was 79.8MB in the beginning and 122.5MB in the end (delta: -42.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 530.15ms. Allocated memory is still 163.6MB. Free memory was 122.5MB in the beginning and 105.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 163.6MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 1593]: 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)=1073741826, argc=1073741826, argv={1073741830:1073741828}, argv={1073741830:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_multiply_54_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_multiply_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_multiply_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_multiply_54e_badSink(data) [L1591] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1593] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1593]: 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: 0.4s, 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, 0.1s 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 [2023-11-12 00:54:01,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX --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 db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:54:03,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:54:04,013 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-12 00:54:04,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:54:04,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:54:04,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:54:04,074 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:54:04,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:54:04,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:54:04,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:54:04,081 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:54:04,082 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:54:04,082 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:54:04,084 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:54:04,084 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:54:04,085 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:54:04,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:54:04,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:54:04,087 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:54:04,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:54:04,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:54:04,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:54:04,089 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:54:04,089 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:54:04,090 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:54:04,090 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:54:04,091 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:54:04,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:54:04,092 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:54:04,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:54:04,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:54:04,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:54:04,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:04,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:54:04,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:54:04,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:54:04,096 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:54:04,096 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:54:04,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:54:04,097 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:54:04,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:54:04,098 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_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a [2023-11-12 00:54:04,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:54:04,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:54:04,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:54:04,582 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:54:04,583 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:54:04,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-12 00:54:07,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:54:08,490 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:54:08,490 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-12 00:54:08,524 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data/d79c3df37/0a14b789e24e4bf99568dca6a0d8a445/FLAG4800c21dd [2023-11-12 00:54:08,539 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/data/d79c3df37/0a14b789e24e4bf99568dca6a0d8a445 [2023-11-12 00:54:08,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:54:08,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:54:08,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:08,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:54:08,549 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:54:08,550 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:08" (1/1) ... [2023-11-12 00:54:08,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34536afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:08, skipping insertion in model container [2023-11-12 00:54:08,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:54:08" (1/1) ... [2023-11-12 00:54:08,626 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:54:09,126 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:54:09,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:09,709 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:54:09,730 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-12 00:54:09,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:54:10,016 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:10,017 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:10,017 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:10,017 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:10,018 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:10,019 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:54:10,027 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:54:10,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10 WrapperNode [2023-11-12 00:54:10,028 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:54:10,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:10,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:54:10,031 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:54:10,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,152 INFO L138 Inliner]: procedures = 509, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 60 [2023-11-12 00:54:10,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:54:10,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:54:10,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:54:10,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:54:10,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,181 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:54:10,229 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:54:10,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:54:10,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:54:10,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (1/1) ... [2023-11-12 00:54:10,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:54:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:54:10,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:54:10,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:54:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-12 00:54:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-12 00:54:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-12 00:54:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:54:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:54:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:54:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:54:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:54:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:54:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-12 00:54:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-12 00:54:10,473 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:54:10,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:54:10,643 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:54:10,650 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:54:10,650 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 00:54:10,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:10 BoogieIcfgContainer [2023-11-12 00:54:10,653 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:54:10,655 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:54:10,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:54:10,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:54:10,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:54:08" (1/3) ... [2023-11-12 00:54:10,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:10, skipping insertion in model container [2023-11-12 00:54:10,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:54:10" (2/3) ... [2023-11-12 00:54:10,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbf13e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:54:10, skipping insertion in model container [2023-11-12 00:54:10,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:10" (3/3) ... [2023-11-12 00:54:10,662 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-12 00:54:10,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:54:10,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:54:10,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:54:10,743 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;@de3e884, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:54:10,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:54:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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) [2023-11-12 00:54:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:54:10,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:54:10,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:54:10,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-12 00:54:10,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:54:10,766 INFO L85 PathProgramCache]: Analyzing trace with hash -754782598, now seen corresponding path program 1 times [2023-11-12 00:54:10,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:54:10,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060313035] [2023-11-12 00:54:10,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:54:10,782 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 [2023-11-12 00:54:10,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:54:10,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:54:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:54:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:54:11,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:54:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:54:11,115 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-12 00:54:11,118 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:54:11,119 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-12 00:54:11,122 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-12 00:54:11,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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)] Ended with exit code 0 [2023-11-12 00:54:11,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:54:11,341 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-12 00:54:11,345 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:54:11,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:54:11 BoogieIcfgContainer [2023-11-12 00:54:11,372 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:54:11,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:54:11,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:54:11,373 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:54:11,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:54:10" (3/4) ... [2023-11-12 00:54:11,381 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 00:54:11,383 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:54:11,384 INFO L158 Benchmark]: Toolchain (without parser) took 2840.86ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 56.4MB in the beginning and 61.0MB in the end (delta: -4.6MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-11-12 00:54:11,385 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 65.0MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:54:11,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1485.08ms. Allocated memory is still 83.9MB. Free memory was 56.2MB in the beginning and 34.2MB in the end (delta: 22.0MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2023-11-12 00:54:11,387 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.33ms. Allocated memory is still 83.9MB. Free memory was 34.2MB in the beginning and 55.5MB in the end (delta: -21.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2023-11-12 00:54:11,388 INFO L158 Benchmark]: Boogie Preprocessor took 74.85ms. Allocated memory is still 83.9MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:54:11,390 INFO L158 Benchmark]: RCFGBuilder took 424.03ms. Allocated memory is still 83.9MB. Free memory was 53.4MB in the beginning and 39.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 00:54:11,391 INFO L158 Benchmark]: TraceAbstraction took 717.33ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 38.3MB in the beginning and 61.6MB in the end (delta: -23.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:54:11,394 INFO L158 Benchmark]: Witness Printer took 9.69ms. Allocated memory is still 100.7MB. Free memory was 61.6MB in the beginning and 61.0MB in the end (delta: 593.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:54:11,398 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 65.0MB. Free memory is still 40.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1485.08ms. Allocated memory is still 83.9MB. Free memory was 56.2MB in the beginning and 34.2MB in the end (delta: 22.0MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.33ms. Allocated memory is still 83.9MB. Free memory was 34.2MB in the beginning and 55.5MB in the end (delta: -21.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.85ms. Allocated memory is still 83.9MB. Free memory was 55.5MB in the beginning and 53.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.03ms. Allocated memory is still 83.9MB. Free memory was 53.4MB in the beginning and 39.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 717.33ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 38.3MB in the beginning and 61.6MB in the end (delta: -23.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 9.69ms. Allocated memory is still 100.7MB. Free memory was 61.6MB in the beginning and 61.0MB in the end (delta: 593.6kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 1593]: 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_multiply_54_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_multiply_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_multiply_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_multiply_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_multiply_54e_badSink(data) [L1591] COND TRUE data < 0 VAL [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] [L1593] data * 2 VAL [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: 1593]: 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, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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=27occurred 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 [2023-11-12 00:54:11,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_091087e7-0439-4e83-9c6f-5c48aa0806b0/bin/utaipan-verify-NcY6lQBIFX/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