./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_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_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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_10356a58-8476-45e0-99ba-17543a0be39a/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 d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:39,307 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:39,417 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 08:04:39,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:39,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:39,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:39,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:39,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:39,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:39,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:39,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:39,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:39,454 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:39,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:39,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:39,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:04:39,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:39,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:39,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:39,458 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:39,458 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:04:39,461 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:39,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:39,462 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:39,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:39,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:39,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:39,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:39,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:39,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:39,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:39,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:04:39,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:04:39,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:39,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:39,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:39,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:39,468 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:39,469 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_10356a58-8476-45e0-99ba-17543a0be39a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c [2023-11-19 08:04:39,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:39,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:39,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:39,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:39,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:39,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2023-11-19 08:04:42,954 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:43,403 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:43,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2023-11-19 08:04:43,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data/ffc7eabb3/a739c230b7074f54befc0ba0019751b6/FLAG6a8d134ac [2023-11-19 08:04:43,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data/ffc7eabb3/a739c230b7074f54befc0ba0019751b6 [2023-11-19 08:04:43,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:43,457 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:43,462 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:43,463 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:43,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:43,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:43" (1/1) ... [2023-11-19 08:04:43,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d79c105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:43, skipping insertion in model container [2023-11-19 08:04:43,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:43" (1/1) ... [2023-11-19 08:04:43,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:44,109 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:44,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:44,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:44,706 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:44,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:44,968 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:44,969 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:44,969 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:44,969 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:44,969 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:44,969 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:44,978 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:44,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44 WrapperNode [2023-11-19 08:04:44,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:44,981 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:44,981 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:44,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:44,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,036 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,068 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2023-11-19 08:04:45,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:45,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:45,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:45,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:45,086 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:45,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:45,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:45,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:45,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (1/1) ... [2023-11-19 08:04:45,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:45,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:45,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 08:04:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 08:04:45,188 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 08:04:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 08:04:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:45,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 08:04:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:45,356 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:45,358 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:45,510 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:45,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:45,518 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:04:45,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:45 BoogieIcfgContainer [2023-11-19 08:04:45,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:45,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:45,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:45,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:45,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:43" (1/3) ... [2023-11-19 08:04:45,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39005b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:45, skipping insertion in model container [2023-11-19 08:04:45,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:44" (2/3) ... [2023-11-19 08:04:45,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39005b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:45, skipping insertion in model container [2023-11-19 08:04:45,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:45" (3/3) ... [2023-11-19 08:04:45,530 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2023-11-19 08:04:45,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:45,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:04:45,654 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:45,661 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;@27f0bde1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:45,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:04:45,665 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 08:04:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 08:04:45,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:45,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:45,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 08:04:45,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:45,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2023-11-19 08:04:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:45,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953161246] [2023-11-19 08:04:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:45,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:45,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:04:45,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:04:45,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 08:04:46,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 08:04:46,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:46,005 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:04:46,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:04:46,029 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated [2023-11-19 08:04:46,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:04:46 BoogieIcfgContainer [2023-11-19 08:04:46,038 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:04:46,046 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:46,046 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:46,046 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:46,047 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:45" (3/4) ... [2023-11-19 08:04:46,053 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:04:46,054 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:46,056 INFO L158 Benchmark]: Toolchain (without parser) took 2598.22ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 131.6MB in the beginning and 155.0MB in the end (delta: -23.5MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2023-11-19 08:04:46,057 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:46,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1517.16ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 83.7MB in the end (delta: 47.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:46,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.34ms. Allocated memory is still 167.8MB. Free memory was 83.7MB in the beginning and 80.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:46,061 INFO L158 Benchmark]: Boogie Preprocessor took 48.35ms. Allocated memory is still 167.8MB. Free memory was 80.8MB in the beginning and 79.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:46,063 INFO L158 Benchmark]: RCFGBuilder took 402.11ms. Allocated memory is still 167.8MB. Free memory was 79.5MB in the beginning and 66.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:04:46,064 INFO L158 Benchmark]: TraceAbstraction took 514.58ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 156.1MB in the end (delta: -90.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:46,064 INFO L158 Benchmark]: Witness Printer took 8.79ms. Allocated memory is still 201.3MB. Free memory was 156.1MB in the beginning and 155.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:46,068 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1517.16ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 83.7MB in the end (delta: 47.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.34ms. Allocated memory is still 167.8MB. Free memory was 83.7MB in the beginning and 80.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.35ms. Allocated memory is still 167.8MB. Free memory was 80.8MB in the beginning and 79.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 402.11ms. Allocated memory is still 167.8MB. Free memory was 79.5MB in the beginning and 66.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 514.58ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 66.1MB in the beginning and 156.1MB in the end (delta: -90.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.79ms. Allocated memory is still 201.3MB. Free memory was 156.1MB in the beginning and 155.0MB in the end (delta: 1.0MB). 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~post100 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: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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] [L1572] 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) [L1572] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741829, argc=1073741829, argv={1073741827:1073741826}, argv={1073741827:1073741826}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1573] CALL CWE191_Integer_Underflow__int_fgets_postdec_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] EXPR data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552-L1562] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1564]: 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: 0.4s, 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=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 08:04:46,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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_10356a58-8476-45e0-99ba-17543a0be39a/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 d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:04:48,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:04:48,956 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-19 08:04:48,966 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:04:48,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:04:48,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-19 08:04:49,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:04:49,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:04:49,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:04:49,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:04:49,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:04:49,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:04:49,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:04:49,036 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:04:49,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:04:49,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:04:49,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:04:49,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:04:49,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:04:49,041 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:04:49,041 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:04:49,042 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 08:04:49,042 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:04:49,043 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 08:04:49,043 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:04:49,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:04:49,044 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:04:49,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:04:49,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:04:49,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:04:49,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:49,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:04:49,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:04:49,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:04:49,049 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 08:04:49,050 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 08:04:49,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:04:49,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:04:49,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:04:49,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:04:49,052 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 08:04:49,053 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:04:49,053 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_10356a58-8476-45e0-99ba-17543a0be39a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a3ab2b0e719126f92e3917183260b3e68c23837fef9aae0929ed461aeb4c7c [2023-11-19 08:04:49,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:04:49,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:04:49,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:04:49,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:04:49,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:04:49,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2023-11-19 08:04:52,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:53,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:53,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2023-11-19 08:04:53,452 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data/d8f589b0f/f4d74e3295234296b23ede96f5eb031a/FLAG72238aef1 [2023-11-19 08:04:53,475 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/data/d8f589b0f/f4d74e3295234296b23ede96f5eb031a [2023-11-19 08:04:53,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:53,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:53,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:53,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:53,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:53,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:53" (1/1) ... [2023-11-19 08:04:53,503 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c221d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:53, skipping insertion in model container [2023-11-19 08:04:53,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:53" (1/1) ... [2023-11-19 08:04:53,608 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:54,113 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:54,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:54,874 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:54,896 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 08:04:54,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:55,211 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:55,211 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:55,211 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:55,212 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:55,212 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:55,212 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:04:55,220 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:55,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55 WrapperNode [2023-11-19 08:04:55,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:55,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:55,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:55,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:55,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,325 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2023-11-19 08:04:55,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:55,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:55,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:55,328 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:55,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,359 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:55,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:55,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:55,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:55,407 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (1/1) ... [2023-11-19 08:04:55,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:55,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:55,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:55,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 08:04:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 08:04:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 08:04:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:04:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 08:04:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:04:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 08:04:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 08:04:55,672 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:55,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:55,815 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:55,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:55,823 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:04:55,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:55 BoogieIcfgContainer [2023-11-19 08:04:55,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:55,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:55,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:55,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:55,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:53" (1/3) ... [2023-11-19 08:04:55,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481bf3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:55, skipping insertion in model container [2023-11-19 08:04:55,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:55" (2/3) ... [2023-11-19 08:04:55,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481bf3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:55, skipping insertion in model container [2023-11-19 08:04:55,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:55" (3/3) ... [2023-11-19 08:04:55,837 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_01_bad.i [2023-11-19 08:04:55,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:55,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:04:55,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:55,937 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;@34cbbef7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:55,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:04:55,942 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 08:04:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 08:04:55,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:55,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:55,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 08:04:55,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2023-11-19 08:04:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 08:04:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565081186] [2023-11-19 08:04:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:55,980 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 08:04:55,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 08:04:55,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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 08:04:55,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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 08:04:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:56,143 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:04:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:04:56,217 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-19 08:04:56,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 08:04:56,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 08:04:56,223 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 08:04:56,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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 08:04:56,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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 08:04:56,432 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 08:04:56,437 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:04:56,471 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated [2023-11-19 08:04:56,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:04:56 BoogieIcfgContainer [2023-11-19 08:04:56,489 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:04:56,494 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:56,494 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:56,494 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:56,495 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:55" (3/4) ... [2023-11-19 08:04:56,497 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:04:56,499 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:56,501 INFO L158 Benchmark]: Toolchain (without parser) took 3016.95ms. Allocated memory is still 104.9MB. Free memory was 77.4MB in the beginning and 61.0MB in the end (delta: 16.4MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-11-19 08:04:56,501 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:56,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1731.53ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 65.8MB in the end (delta: 11.3MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2023-11-19 08:04:56,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.54ms. Allocated memory is still 104.9MB. Free memory was 65.8MB in the beginning and 62.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:56,513 INFO L158 Benchmark]: Boogie Preprocessor took 73.81ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:56,514 INFO L158 Benchmark]: RCFGBuilder took 425.38ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 47.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:04:56,517 INFO L158 Benchmark]: TraceAbstraction took 659.48ms. Allocated memory is still 104.9MB. Free memory was 46.4MB in the beginning and 61.0MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:56,517 INFO L158 Benchmark]: Witness Printer took 5.45ms. Allocated memory is still 104.9MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:56,524 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1731.53ms. Allocated memory is still 104.9MB. Free memory was 77.1MB in the beginning and 65.8MB in the end (delta: 11.3MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.54ms. Allocated memory is still 104.9MB. Free memory was 65.8MB in the beginning and 62.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.81ms. Allocated memory is still 104.9MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.38ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 47.0MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 659.48ms. Allocated memory is still 104.9MB. Free memory was 46.4MB in the beginning and 61.0MB in the end (delta: -14.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.45ms. Allocated memory is still 104.9MB. Free memory is still 61.0MB. 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~post98 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: 1564]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1556. 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] [L1572] 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) [L1572] 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] [L1573] CALL CWE191_Integer_Underflow__int_fgets_postdec_01_bad() [L1550] int data; [L1551] data = 0 [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1556] EXPR data = atoi(inputBuffer) [L1553] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552-L1562] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1564]: 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: 0.5s, 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 08:04:56,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10356a58-8476-45e0-99ba-17543a0be39a/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