./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 30e01a73 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_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire --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-30e01a7 [2023-11-23 21:17:56,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:17:56,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-23 21:17:56,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:17:56,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:17:57,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:17:57,019 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:17:57,020 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:17:57,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:17:57,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:17:57,027 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:17:57,028 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:17:57,029 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:17:57,031 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:17:57,031 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:17:57,031 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:17:57,032 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:17:57,032 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:17:57,033 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:17:57,033 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:17:57,034 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:17:57,034 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:17:57,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:17:57,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:17:57,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:17:57,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:17:57,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:17:57,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:17:57,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:17:57,038 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:17:57,040 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:17:57,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:17:57,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:17:57,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:17:57,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:17:57,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:17:57,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:17:57,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:17:57,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:17:57,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:17:57,043 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:17:57,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:17:57,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:17:57,044 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:17:57,045 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:17:57,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:17:57,045 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_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a [2023-11-23 21:17:57,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:17:57,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:17:57,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:17:57,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:17:57,456 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:17:57,457 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-23 21:18:00,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:01,131 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:01,131 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-23 21:18:01,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data/5ed207e10/5d851be62bde4ff9824aee1521decf9d/FLAG3955a7e3a [2023-11-23 21:18:01,176 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data/5ed207e10/5d851be62bde4ff9824aee1521decf9d [2023-11-23 21:18:01,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:01,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:01,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:01,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:01,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:01,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:01" (1/1) ... [2023-11-23 21:18:01,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e22d7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:01, skipping insertion in model container [2023-11-23 21:18:01,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:01" (1/1) ... [2023-11-23 21:18:01,249 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:01,707 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:18:02,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:02,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:02,357 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:18:02,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:02,699 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:02,699 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:02,700 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:02,700 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:02,700 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:02,700 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:02,731 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:02,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02 WrapperNode [2023-11-23 21:18:02,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:02,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:02,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:02,734 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:02,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,862 INFO L138 Inliner]: procedures = 504, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 60 [2023-11-23 21:18:02,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:02,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:02,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:02,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:02,877 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:02,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:02,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:02,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:02,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (1/1) ... [2023-11-23 21:18:02,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:02,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:02,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:02,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:03,004 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 21:18:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 21:18:03,005 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 21:18:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 21:18:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:18:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:03,205 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:03,208 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:03,371 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:03,414 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:03,414 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:18:03,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:03 BoogieIcfgContainer [2023-11-23 21:18:03,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:03,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:03,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:03,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:03,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:01" (1/3) ... [2023-11-23 21:18:03,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4acc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:03, skipping insertion in model container [2023-11-23 21:18:03,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:02" (2/3) ... [2023-11-23 21:18:03,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4acc16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:03, skipping insertion in model container [2023-11-23 21:18:03,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:03" (3/3) ... [2023-11-23 21:18:03,426 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-23 21:18:03,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:03,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:18:03,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:03,508 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;@45868e5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:03,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:18:03,513 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) [2023-11-23 21:18:03,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:18:03,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:03,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:03,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-23 21:18:03,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash -858103127, now seen corresponding path program 1 times [2023-11-23 21:18:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:03,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878414772] [2023-11-23 21:18:03,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:03,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:03,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:18:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:03,880 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:18:03,883 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:18:03,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-23 21:18:03,887 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-23 21:18:03,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:03,898 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:18:03,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:18:03,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:18:03 BoogieIcfgContainer [2023-11-23 21:18:03,957 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:18:03,960 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:18:03,960 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:18:03,961 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:18:03,961 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:03" (3/4) ... [2023-11-23 21:18:03,964 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:18:03,965 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:18:03,967 INFO L158 Benchmark]: Toolchain (without parser) took 2786.25ms. Allocated memory is still 157.3MB. Free memory was 121.0MB in the beginning and 71.0MB in the end (delta: 50.0MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-23 21:18:03,968 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:03,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1550.85ms. Allocated memory is still 157.3MB. Free memory was 120.4MB in the beginning and 108.8MB in the end (delta: 11.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2023-11-23 21:18:03,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 129.14ms. Allocated memory is still 157.3MB. Free memory was 108.8MB in the beginning and 104.8MB in the end (delta: 4.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:18:03,978 INFO L158 Benchmark]: Boogie Preprocessor took 45.37ms. Allocated memory is still 157.3MB. Free memory was 104.8MB in the beginning and 103.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:18:03,979 INFO L158 Benchmark]: RCFGBuilder took 505.01ms. Allocated memory is still 157.3MB. Free memory was 103.6MB in the beginning and 88.0MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:18:03,980 INFO L158 Benchmark]: TraceAbstraction took 539.24ms. Allocated memory is still 157.3MB. Free memory was 88.0MB in the beginning and 71.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:18:03,982 INFO L158 Benchmark]: Witness Printer took 5.57ms. Allocated memory is still 157.3MB. Free memory was 71.2MB in the beginning and 71.0MB in the end (delta: 230.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:03,991 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 92.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1550.85ms. Allocated memory is still 157.3MB. Free memory was 120.4MB in the beginning and 108.8MB in the end (delta: 11.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 129.14ms. Allocated memory is still 157.3MB. Free memory was 108.8MB in the beginning and 104.8MB in the end (delta: 4.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.37ms. Allocated memory is still 157.3MB. Free memory was 104.8MB in the beginning and 103.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 505.01ms. Allocated memory is still 157.3MB. Free memory was 103.6MB in the beginning and 88.0MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 539.24ms. Allocated memory is still 157.3MB. Free memory was 88.0MB in the beginning and 71.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.57ms. Allocated memory is still 157.3MB. Free memory was 71.2MB in the beginning and 71.0MB in the end (delta: 230.4kB). 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); [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}, 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 [2023-11-23 21:18:04,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire --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-30e01a7 [2023-11-23 21:18:07,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:07,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-23 21:18:07,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:07,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:07,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:07,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:07,298 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:07,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:07,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:07,307 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:07,307 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:07,308 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:07,310 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:07,311 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:07,311 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:07,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:07,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:07,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:07,316 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:07,316 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:07,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:07,318 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:18:07,318 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:18:07,319 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:18:07,320 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:18:07,320 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:18:07,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:07,321 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:07,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:07,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:18:07,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:07,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:07,325 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:07,326 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:07,326 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:07,326 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:07,327 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:18:07,327 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:18:07,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:07,329 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:07,329 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:07,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:07,330 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_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db598f24fd764e67b522f5d4f98f2564bb3f2d8c9e3be827ad1aeb8b6c3f693a [2023-11-23 21:18:07,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:07,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:07,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:07,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:07,919 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:07,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-23 21:18:11,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:11,992 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:11,993 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-23 21:18:12,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data/50d243547/00642b9ce65941b5b3bb228219d6dbf4/FLAGdb78a9672 [2023-11-23 21:18:12,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/data/50d243547/00642b9ce65941b5b3bb228219d6dbf4 [2023-11-23 21:18:12,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:12,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:12,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:12,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:12,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:12,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:12" (1/1) ... [2023-11-23 21:18:12,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50956967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:12, skipping insertion in model container [2023-11-23 21:18:12,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:12" (1/1) ... [2023-11-23 21:18:12,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:12,759 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:18:13,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:13,531 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:13,575 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-23 21:18:13,752 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:13,964 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:13,965 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:13,965 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:13,966 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:13,966 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:13,966 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:13,976 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:13,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13 WrapperNode [2023-11-23 21:18:13,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:13,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:13,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:13,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:13,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,059 INFO L138 Inliner]: procedures = 509, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 59 [2023-11-23 21:18:14,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:14,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:14,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:14,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:14,075 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,082 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:14,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:14,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:14,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:14,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:14,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:14,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:14,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:14,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-23 21:18:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-23 21:18:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-23 21:18:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:18:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-23 21:18:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-23 21:18:14,476 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:14,480 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:14,679 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:14,725 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:14,725 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:18:14,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:14 BoogieIcfgContainer [2023-11-23 21:18:14,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:14,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:14,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:14,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:14,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:12" (1/3) ... [2023-11-23 21:18:14,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192e67b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:14, skipping insertion in model container [2023-11-23 21:18:14,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13" (2/3) ... [2023-11-23 21:18:14,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192e67b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:14, skipping insertion in model container [2023-11-23 21:18:14,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:14" (3/3) ... [2023-11-23 21:18:14,739 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_54_bad.i [2023-11-23 21:18:14,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:14,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:18:14,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:14,847 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;@2ee2ae93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:14,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:18:14,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 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) [2023-11-23 21:18:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:18:14,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:14,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:14,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-23 21:18:14,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1874624782, now seen corresponding path program 1 times [2023-11-23 21:18:14,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:18:14,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550022309] [2023-11-23 21:18:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:14,914 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 [2023-11-23 21:18:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:18:14,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:18:14,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:18:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:15,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:18:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:15,350 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-23 21:18:15,352 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:18:15,355 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-23 21:18:15,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-23 21:18:15,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:18:15,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:18:15,569 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:18:15,577 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:18:15,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:18:15 BoogieIcfgContainer [2023-11-23 21:18:15,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:18:15,628 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:18:15,628 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:18:15,629 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:18:15,629 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:14" (3/4) ... [2023-11-23 21:18:15,632 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:18:15,634 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:18:15,636 INFO L158 Benchmark]: Toolchain (without parser) took 3562.97ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 49.9MB in the beginning and 43.6MB in the end (delta: 6.4MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-23 21:18:15,637 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 77.6MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:15,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1900.85ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 49.7MB in the beginning and 54.2MB in the end (delta: -4.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2023-11-23 21:18:15,649 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.50ms. Allocated memory is still 102.8MB. Free memory was 54.2MB in the beginning and 51.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:18:15,650 INFO L158 Benchmark]: Boogie Preprocessor took 62.97ms. Allocated memory is still 102.8MB. Free memory was 51.4MB in the beginning and 49.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:18:15,653 INFO L158 Benchmark]: RCFGBuilder took 594.96ms. Allocated memory is still 102.8MB. Free memory was 49.3MB in the beginning and 62.0MB in the end (delta: -12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:18:15,655 INFO L158 Benchmark]: TraceAbstraction took 892.98ms. Allocated memory is still 102.8MB. Free memory was 61.4MB in the beginning and 44.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 21:18:15,657 INFO L158 Benchmark]: Witness Printer took 6.37ms. Allocated memory is still 102.8MB. Free memory was 44.1MB in the beginning and 43.6MB in the end (delta: 564.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:15,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 77.6MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1900.85ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 49.7MB in the beginning and 54.2MB in the end (delta: -4.5MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.50ms. Allocated memory is still 102.8MB. Free memory was 54.2MB in the beginning and 51.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.97ms. Allocated memory is still 102.8MB. Free memory was 51.4MB in the beginning and 49.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.96ms. Allocated memory is still 102.8MB. Free memory was 49.3MB in the beginning and 62.0MB in the end (delta: -12.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 892.98ms. Allocated memory is still 102.8MB. Free memory was 61.4MB in the beginning and 44.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 6.37ms. Allocated memory is still 102.8MB. Free memory was 44.1MB in the beginning and 43.6MB in the end (delta: 564.3kB). 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); [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}, 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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=19occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:18:15,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb1375f9-5191-4289-bc59-4adb85177650/bin/utaipan-verify-mE87zJ7Ire/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