./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:01:43,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:01:43,896 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:01:43,904 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:01:43,905 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:01:43,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:01:43,946 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:01:43,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:01:43,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:01:43,954 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:01:43,954 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:01:43,956 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:01:43,956 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:01:43,958 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:01:43,959 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:01:43,959 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:01:43,960 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:01:43,960 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:01:43,960 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:01:43,961 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:01:43,961 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:01:43,962 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:01:43,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:01:43,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:01:43,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:01:43,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:01:43,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:01:43,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:01:43,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:01:43,967 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:01:43,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:01:43,969 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:01:43,969 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:01:43,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:01:43,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:01:43,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:43,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:01:43,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:01:43,971 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:01:43,971 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:01:43,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:01:43,972 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:01:43,972 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:01:43,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:01:43,973 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_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc [2023-11-19 05:01:44,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:01:44,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:01:44,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:01:44,320 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:01:44,321 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:01:44,322 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-19 05:01:47,581 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:01:48,051 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:01:48,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-19 05:01:48,082 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data/c0c1cc023/c2d20776964e4faaa84055b9d26c4ae2/FLAGb568b0f8e [2023-11-19 05:01:48,099 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data/c0c1cc023/c2d20776964e4faaa84055b9d26c4ae2 [2023-11-19 05:01:48,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:01:48,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:01:48,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:48,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:01:48,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:01:48,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:48" (1/1) ... [2023-11-19 05:01:48,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de35b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:48, skipping insertion in model container [2023-11-19 05:01:48,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:48" (1/1) ... [2023-11-19 05:01:48,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:01:48,672 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:01:49,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:49,333 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:01:49,358 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:01:49,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:49,677 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:49,678 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:49,678 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:49,693 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:49,693 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:49,693 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:01:49,702 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:01:49,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49 WrapperNode [2023-11-19 05:01:49,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:49,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:01:49,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:01:49,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:01:49,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,800 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2023-11-19 05:01:49,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:01:49,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:01:49,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:01:49,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:01:49,810 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,825 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:01:49,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:01:49,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:01:49,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:01:49,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (1/1) ... [2023-11-19 05:01:49,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:49,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:01:49,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:01:49,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:01:49,968 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 05:01:49,969 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 05:01:49,971 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 05:01:49,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:01:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:01:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:01:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:01:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:01:49,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:01:49,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:01:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:01:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:01:49,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:01:50,224 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:01:50,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:01:50,457 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:01:50,522 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:01:50,522 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:01:50,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:50 BoogieIcfgContainer [2023-11-19 05:01:50,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:01:50,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:01:50,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:01:50,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:01:50,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:01:48" (1/3) ... [2023-11-19 05:01:50,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a60db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:50, skipping insertion in model container [2023-11-19 05:01:50,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:49" (2/3) ... [2023-11-19 05:01:50,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a60db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:01:50, skipping insertion in model container [2023-11-19 05:01:50,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:50" (3/3) ... [2023-11-19 05:01:50,549 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-19 05:01:50,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:01:50,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:01:50,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:01:50,660 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;@302d2260, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:01:50,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:01:50,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:01:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:01:50,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:01:50,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:01:50,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:01:50,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:01:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1607565872, now seen corresponding path program 1 times [2023-11-19 05:01:50,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:01:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114285634] [2023-11-19 05:01:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:01:50,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:01:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:01:50,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:01:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:01:51,004 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:01:51,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:01:51,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:01:51,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:01:51,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:01:51,022 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:01:51,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:01:51,054 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated [2023-11-19 05:01:51,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:01:51 BoogieIcfgContainer [2023-11-19 05:01:51,069 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:01:51,072 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:01:51,072 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:01:51,073 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:01:51,073 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:01:50" (3/4) ... [2023-11-19 05:01:51,081 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:01:51,082 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:01:51,084 INFO L158 Benchmark]: Toolchain (without parser) took 2975.39ms. Allocated memory is still 182.5MB. Free memory was 134.0MB in the beginning and 100.2MB in the end (delta: 33.7MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2023-11-19 05:01:51,084 INFO L158 Benchmark]: CDTParser took 1.54ms. Allocated memory is still 111.1MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:01:51,085 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1590.91ms. Allocated memory is still 182.5MB. Free memory was 134.0MB in the beginning and 139.0MB in the end (delta: -5.0MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2023-11-19 05:01:51,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.89ms. Allocated memory is still 182.5MB. Free memory was 139.0MB in the beginning and 136.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:01:51,086 INFO L158 Benchmark]: Boogie Preprocessor took 35.58ms. Allocated memory is still 182.5MB. Free memory was 136.9MB in the beginning and 134.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:01:51,087 INFO L158 Benchmark]: RCFGBuilder took 696.72ms. Allocated memory is still 182.5MB. Free memory was 134.8MB in the beginning and 119.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:01:51,088 INFO L158 Benchmark]: TraceAbstraction took 532.05ms. Allocated memory is still 182.5MB. Free memory was 119.1MB in the beginning and 101.2MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:01:51,088 INFO L158 Benchmark]: Witness Printer took 10.49ms. Allocated memory is still 182.5MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 994.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:01:51,098 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54ms. Allocated memory is still 111.1MB. Free memory is still 63.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1590.91ms. Allocated memory is still 182.5MB. Free memory was 134.0MB in the beginning and 139.0MB in the end (delta: -5.0MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.89ms. Allocated memory is still 182.5MB. Free memory was 139.0MB in the beginning and 136.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.58ms. Allocated memory is still 182.5MB. Free memory was 136.9MB in the beginning and 134.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 696.72ms. Allocated memory is still 182.5MB. Free memory was 134.8MB in the beginning and 119.1MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 532.05ms. Allocated memory is still 182.5MB. Free memory was 119.1MB in the beginning and 101.2MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 10.49ms. Allocated memory is still 182.5MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 994.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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); [L1582] 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) [L1582] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741825, argc=1073741825, argv={1073741829:1073741827}, argv={1073741829:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] CALL CWE191_Integer_Underflow__int_fgets_postdec_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_postdec_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={6:0}] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 05:01:51,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:01:53,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:01:54,075 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-19 05:01:54,082 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:01:54,083 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:01:54,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:01:54,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:01:54,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:01:54,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:01:54,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:01:54,122 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:01:54,123 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:01:54,123 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:01:54,124 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:01:54,125 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:01:54,125 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:01:54,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:01:54,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:01:54,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:01:54,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:01:54,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:01:54,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:01:54,130 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:01:54,130 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:01:54,131 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:01:54,132 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:01:54,132 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:01:54,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:01:54,133 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:01:54,134 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:01:54,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:01:54,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:01:54,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:01:54,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:01:54,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:01:54,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:01:54,137 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:01:54,138 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:01:54,138 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:01:54,139 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:01:54,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:01:54,140 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_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cc19415d2c506dfc0f3885e109faba292247adb3ee953669e2cd73af727a6cc [2023-11-19 05:01:54,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:01:54,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:01:54,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:01:54,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:01:54,617 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:01:54,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-19 05:01:57,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:01:58,311 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:01:58,316 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-19 05:01:58,356 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data/fb2a032d5/801f1e74ac6a4243bef6e8d750bf8870/FLAG95850f3b9 [2023-11-19 05:01:58,381 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/data/fb2a032d5/801f1e74ac6a4243bef6e8d750bf8870 [2023-11-19 05:01:58,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:01:58,394 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:01:58,398 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:01:58,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:01:58,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:01:58,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:58" (1/1) ... [2023-11-19 05:01:58,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ac6931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:01:58, skipping insertion in model container [2023-11-19 05:01:58,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:01:58" (1/1) ... [2023-11-19 05:01:58,521 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:01:59,098 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:01:59,977 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:01:59,995 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:00,018 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:02:00,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:00,345 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:00,346 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:00,346 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:00,346 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:00,347 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:00,347 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:00,356 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:00,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00 WrapperNode [2023-11-19 05:02:00,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:00,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:00,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:00,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:00,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,438 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2023-11-19 05:02:00,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:00,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:00,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:00,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:00,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,481 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:00,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:00,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:00,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:00,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (1/1) ... [2023-11-19 05:02:00,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:00,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:00,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:00,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 05:02:00,569 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 05:02:00,572 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 05:02:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:02:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:00,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 05:02:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:02:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:02:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 05:02:00,792 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:00,795 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:00,977 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:00,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:00,993 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:02:00,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:00 BoogieIcfgContainer [2023-11-19 05:02:00,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:01,003 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:01,003 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:01,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:01,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:01:58" (1/3) ... [2023-11-19 05:02:01,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528a748c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:01, skipping insertion in model container [2023-11-19 05:02:01,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:00" (2/3) ... [2023-11-19 05:02:01,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@528a748c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:01, skipping insertion in model container [2023-11-19 05:02:01,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:00" (3/3) ... [2023-11-19 05:02:01,011 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_34_bad.i [2023-11-19 05:02:01,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:01,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:02:01,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:01,096 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;@6875856e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:01,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:02:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:02:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:02:01,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:01,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:01,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:02:01,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2023-11-19 05:02:01,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:02:01,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10180309] [2023-11-19 05:02:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:01,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:02:01,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:02:01,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:02:01,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:02:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:02:01,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:02:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:02:01,537 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 05:02:01,540 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:02:01,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:02:01,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:02:01,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:02:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:02:01,756 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:02:01,762 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:02:01,802 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated [2023-11-19 05:02:01,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:02:01 BoogieIcfgContainer [2023-11-19 05:02:01,818 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:02:01,822 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:02:01,822 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:02:01,822 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:02:01,823 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:00" (3/4) ... [2023-11-19 05:02:01,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:02:01,827 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:02:01,829 INFO L158 Benchmark]: Toolchain (without parser) took 3434.41ms. Allocated memory is still 96.5MB. Free memory was 68.7MB in the beginning and 63.0MB in the end (delta: 5.7MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,830 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:01,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1958.84ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 68.5MB in the end (delta: -145.3kB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.89ms. Allocated memory is still 96.5MB. Free memory was 68.5MB in the beginning and 65.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,835 INFO L158 Benchmark]: Boogie Preprocessor took 59.99ms. Allocated memory is still 96.5MB. Free memory was 65.5MB in the beginning and 63.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,836 INFO L158 Benchmark]: RCFGBuilder took 498.10ms. Allocated memory is still 96.5MB. Free memory was 63.4MB in the beginning and 48.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,836 INFO L158 Benchmark]: TraceAbstraction took 814.88ms. Allocated memory is still 96.5MB. Free memory was 48.2MB in the beginning and 63.6MB in the end (delta: -15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,837 INFO L158 Benchmark]: Witness Printer took 5.89ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 63.0MB in the end (delta: 593.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:01,849 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 45.2MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1958.84ms. Allocated memory is still 96.5MB. Free memory was 68.4MB in the beginning and 68.5MB in the end (delta: -145.3kB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.89ms. Allocated memory is still 96.5MB. Free memory was 68.5MB in the beginning and 65.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.99ms. Allocated memory is still 96.5MB. Free memory was 65.5MB in the beginning and 63.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.10ms. Allocated memory is still 96.5MB. Free memory was 63.4MB in the beginning and 48.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 814.88ms. Allocated memory is still 96.5MB. Free memory was 48.2MB in the beginning and 63.6MB in the end (delta: -15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.89ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 63.0MB in the end (delta: 593.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post99 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562. 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] [L1582] 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) [L1582] 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] [L1583] CALL CWE191_Integer_Underflow__int_fgets_postdec_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_postdec_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1573] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={524295:0}] - UnprovableResult [Line: 1573]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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 [2023-11-19 05:02:01,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9d2a22e-051e-4283-a9ee-ea16234bb44f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample