./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:48,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:48,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 08:03:48,828 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:48,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:48,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:48,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:48,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:48,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:48,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:48,886 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:48,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:48,887 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:48,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:48,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:48,890 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:48,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:48,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:48,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:48,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:48,893 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:03:48,894 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:48,894 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:48,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:48,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:48,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:48,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:48,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:48,900 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:48,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:48,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:48,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:48,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:48,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:48,904 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:48,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:48,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:48,905 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:48,905 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 [2023-11-19 08:03:49,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:49,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:49,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:49,321 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:49,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:49,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2023-11-19 08:03:52,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:03:53,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:03:53,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2023-11-19 08:03:53,125 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data/46a0cf6fe/995ce2e9cf764eddb21f9ef3e622cfb6/FLAG04f53bc17 [2023-11-19 08:03:53,146 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data/46a0cf6fe/995ce2e9cf764eddb21f9ef3e622cfb6 [2023-11-19 08:03:53,153 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:03:53,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:03:53,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:53,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:03:53,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:03:53,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:53" (1/1) ... [2023-11-19 08:03:53,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e36a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:53, skipping insertion in model container [2023-11-19 08:03:53,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:03:53" (1/1) ... [2023-11-19 08:03:53,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:03:53,801 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:03:54,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:54,594 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:03:54,636 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:03:54,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:03:54,915 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:54,915 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:54,915 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:54,915 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:54,916 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:54,916 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:03:54,924 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:03:54,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54 WrapperNode [2023-11-19 08:03:54,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:03:54,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:54,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:03:54,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:03:54,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:54,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:54,991 INFO L138 Inliner]: procedures = 501, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2023-11-19 08:03:54,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:03:54,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:03:54,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:03:54,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:03:55,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,019 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:03:55,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:03:55,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:03:55,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:03:55,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (1/1) ... [2023-11-19 08:03:55,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:55,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:55,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:03:55,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:03:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 08:03:55,135 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 08:03:55,136 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 08:03:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:03:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 08:03:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:03:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:03:55,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:03:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:03:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:03:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 08:03:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:03:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:03:55,404 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:03:55,410 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:03:55,607 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:03:55,616 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:03:55,616 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:03:55,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:55 BoogieIcfgContainer [2023-11-19 08:03:55,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:03:55,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:03:55,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:03:55,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:03:55,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:03:53" (1/3) ... [2023-11-19 08:03:55,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77da4a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:55, skipping insertion in model container [2023-11-19 08:03:55,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:03:54" (2/3) ... [2023-11-19 08:03:55,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77da4a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:03:55, skipping insertion in model container [2023-11-19 08:03:55,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:55" (3/3) ... [2023-11-19 08:03:55,631 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2023-11-19 08:03:55,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:03:55,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:03:55,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:03:55,727 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=PETRI_NET, 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;@235ac7e3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:03:55,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:03:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:03:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 08:03:55,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:55,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:55,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 08:03:55,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2023-11-19 08:03:55,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:55,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455865190] [2023-11-19 08:03:55,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:03:55,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:03:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:03:56,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:03:56,068 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:03:56,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 08:03:56,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 08:03:56,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:03:56,081 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:03:56,109 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:03:56,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:03:56 BoogieIcfgContainer [2023-11-19 08:03:56,145 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:03:56,146 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:03:56,146 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:03:56,146 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:03:56,147 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:03:55" (3/4) ... [2023-11-19 08:03:56,150 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:03:56,151 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:03:56,153 INFO L158 Benchmark]: Toolchain (without parser) took 2996.97ms. Allocated memory is still 163.6MB. Free memory was 113.7MB in the beginning and 128.1MB in the end (delta: -14.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:03:56,153 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:03:56,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1765.55ms. Allocated memory is still 163.6MB. Free memory was 113.4MB in the beginning and 102.2MB in the end (delta: 11.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-11-19 08:03:56,155 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.61ms. Allocated memory is still 163.6MB. Free memory was 101.6MB in the beginning and 98.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:03:56,156 INFO L158 Benchmark]: Boogie Preprocessor took 35.19ms. Allocated memory is still 163.6MB. Free memory was 98.9MB in the beginning and 97.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:03:56,156 INFO L158 Benchmark]: RCFGBuilder took 591.91ms. Allocated memory is still 163.6MB. Free memory was 97.4MB in the beginning and 83.6MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:03:56,157 INFO L158 Benchmark]: TraceAbstraction took 521.91ms. Allocated memory is still 163.6MB. Free memory was 82.7MB in the beginning and 128.5MB in the end (delta: -45.8MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. [2023-11-19 08:03:56,158 INFO L158 Benchmark]: Witness Printer took 5.65ms. Allocated memory is still 163.6MB. Free memory was 128.4MB in the beginning and 128.1MB in the end (delta: 297.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:03:56,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 67.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1765.55ms. Allocated memory is still 163.6MB. Free memory was 113.4MB in the beginning and 102.2MB in the end (delta: 11.2MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.61ms. Allocated memory is still 163.6MB. Free memory was 101.6MB in the beginning and 98.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.19ms. Allocated memory is still 163.6MB. Free memory was 98.9MB in the beginning and 97.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 591.91ms. Allocated memory is still 163.6MB. Free memory was 97.4MB in the beginning and 83.6MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 521.91ms. Allocated memory is still 163.6MB. Free memory was 82.7MB in the beginning and 128.5MB in the end (delta: -45.8MB). Peak memory consumption was 24.8MB. Max. memory is 16.1GB. * Witness Printer took 5.65ms. Allocated memory is still 163.6MB. Free memory was 128.4MB in the beginning and 128.1MB in the end (delta: 297.3kB). 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: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741832, argc=1073741832, argv={1073741827:1073741826}, argv={1073741827:1073741826}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={6:0}, dataArray={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 08:03:56,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:59,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:59,252 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-19 08:03:59,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:59,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:59,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-19 08:03:59,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:59,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:59,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:59,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:59,298 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:59,299 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:59,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:59,301 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:59,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:59,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:59,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:59,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:59,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:59,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:59,306 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:03:59,314 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:03:59,314 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:03:59,315 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:03:59,315 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:03:59,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:59,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:59,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:59,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:59,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:59,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:59,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:59,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:59,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:59,322 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:03:59,322 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:03:59,322 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:59,323 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:59,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:59,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:59,325 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:03:59,325 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:59,325 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a72baf5b6d3daa8ef9e95fda41fcc26db70c717a1a799cba9ecd89cc578d7e6 [2023-11-19 08:03:59,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:59,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:59,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:59,813 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:59,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:59,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2023-11-19 08:04:03,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:03,675 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:03,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2023-11-19 08:04:03,714 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data/a2d1ec23e/c3ad3f09d68e475cad8e1e70ee0aedfa/FLAGd81b4cefe [2023-11-19 08:04:03,733 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/data/a2d1ec23e/c3ad3f09d68e475cad8e1e70ee0aedfa [2023-11-19 08:04:03,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:03,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:03,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:03,746 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:03,751 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:03,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:03" (1/1) ... [2023-11-19 08:04:03,753 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57651f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:03, skipping insertion in model container [2023-11-19 08:04:03,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:03" (1/1) ... [2023-11-19 08:04:03,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:04,278 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:05,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:05,042 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:05,076 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:05,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:05,260 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:05,260 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:05,260 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:05,260 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:05,261 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:05,261 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:05,269 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:05,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05 WrapperNode [2023-11-19 08:04:05,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:05,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:05,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:05,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:05,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,336 INFO L138 Inliner]: procedures = 506, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2023-11-19 08:04:05,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:05,337 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:05,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:05,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:05,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:05,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:05,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:05,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:05,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (1/1) ... [2023-11-19 08:04:05,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:05,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:05,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:05,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 08:04:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 08:04:05,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 08:04:05,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:04:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:05,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:05,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 08:04:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 08:04:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 08:04:05,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 08:04:05,663 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:05,665 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:05,930 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:05,937 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:05,938 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:04:05,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:05 BoogieIcfgContainer [2023-11-19 08:04:05,941 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:05,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:05,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:05,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:05,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:03" (1/3) ... [2023-11-19 08:04:05,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9b57ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:05, skipping insertion in model container [2023-11-19 08:04:05,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:05" (2/3) ... [2023-11-19 08:04:05,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9b57ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:05, skipping insertion in model container [2023-11-19 08:04:05,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:05" (3/3) ... [2023-11-19 08:04:05,954 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_66_bad.i [2023-11-19 08:04:05,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:05,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:04:06,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:06,041 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=PETRI_NET, 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;@ec46f69, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:06,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:04:06,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:04:06,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 08:04:06,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:06,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:06,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 08:04:06,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1073154618, now seen corresponding path program 1 times [2023-11-19 08:04:06,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:06,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111133010] [2023-11-19 08:04:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:06,113 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 08:04:06,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:06,116 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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 08:04:06,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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 08:04:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:06,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:06,461 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 08:04:06,469 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:04:06,470 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 08:04:06,472 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 08:04:06,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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 08:04:06,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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 08:04:06,683 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:04:06,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:04:06,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:04:06 BoogieIcfgContainer [2023-11-19 08:04:06,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:04:06,738 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:06,738 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:06,738 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:06,739 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:05" (3/4) ... [2023-11-19 08:04:06,741 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:04:06,743 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:06,745 INFO L158 Benchmark]: Toolchain (without parser) took 3000.84ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 62.0MB in the end (delta: 13.7MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:06,746 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 73.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:06,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1524.40ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 69.7MB in the end (delta: 6.0MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2023-11-19 08:04:06,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.06ms. Allocated memory is still 102.8MB. Free memory was 69.7MB in the beginning and 66.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:06,755 INFO L158 Benchmark]: Boogie Preprocessor took 40.39ms. Allocated memory is still 102.8MB. Free memory was 66.5MB in the beginning and 64.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:06,756 INFO L158 Benchmark]: RCFGBuilder took 562.83ms. Allocated memory is still 102.8MB. Free memory was 64.4MB in the beginning and 49.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 08:04:06,757 INFO L158 Benchmark]: TraceAbstraction took 791.22ms. Allocated memory is still 102.8MB. Free memory was 48.7MB in the beginning and 62.5MB in the end (delta: -13.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:06,758 INFO L158 Benchmark]: Witness Printer took 5.23ms. Allocated memory is still 102.8MB. Free memory was 62.5MB in the beginning and 62.0MB in the end (delta: 562.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:06,768 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 73.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1524.40ms. Allocated memory is still 102.8MB. Free memory was 75.7MB in the beginning and 69.7MB in the end (delta: 6.0MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.06ms. Allocated memory is still 102.8MB. Free memory was 69.7MB in the beginning and 66.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.39ms. Allocated memory is still 102.8MB. Free memory was 66.5MB in the beginning and 64.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 562.83ms. Allocated memory is still 102.8MB. Free memory was 64.4MB in the beginning and 49.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 791.22ms. Allocated memory is still 102.8MB. Free memory was 48.7MB in the beginning and 62.5MB in the end (delta: -13.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.23ms. Allocated memory is still 102.8MB. Free memory was 62.5MB in the beginning and 62.0MB in the end (delta: 562.1kB). 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: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1571] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1572] CALL CWE191_Integer_Underflow__int_fgets_predec_66_bad() [L1551] int data; [L1552] int dataArray[5]; [L1553] data = 0 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1565] dataArray[2] = data [L1566] CALL CWE191_Integer_Underflow__int_fgets_predec_66b_badSink(dataArray) [L1578] EXPR dataArray[2] [L1578] int data = dataArray[2]; [L1580] --data VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, dataArray={15:0}, dataArray={15:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1580]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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 08:04:06,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c16f61b0-ab47-42e9-81e4-609361322c43/bin/uautomizer-verify-uCwYo4JHxu/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