./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --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 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:46,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:46,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:46,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:46,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:46,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:46,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:46,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:46,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:46,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:46,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:46,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:46,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:46,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:46,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:46,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:46,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:46,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:46,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:46,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:46,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:46,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:46,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:46,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:46,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:46,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:46,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:46,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:46,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:46,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:46,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:46,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:46,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:46,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:46,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:46,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:46,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:46,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:46,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:46,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:46,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:46,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 12:10:46,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:46,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:46,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:46,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:46,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:46,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:46,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:46,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:46,846 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:46,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:46,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:10:46,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:10:46,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:46,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:46,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:46,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:46,848 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:10:46,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:46,848 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:46,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:46,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:46,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:46,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:46,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:46,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:46,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:46,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:46,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:10:46,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:10:46,851 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:46,851 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:46,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:46,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 [2022-11-20 12:10:47,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:47,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:47,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:47,162 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:47,163 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:47,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-11-20 12:10:50,232 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:10:50,617 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:10:50,622 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-11-20 12:10:50,650 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data/29c5f5136/56a4f77efa35484e8c0702880145cdc7/FLAGeddd8afb9 [2022-11-20 12:10:50,663 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data/29c5f5136/56a4f77efa35484e8c0702880145cdc7 [2022-11-20 12:10:50,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:10:50,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:10:50,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:50,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:10:50,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:10:50,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:50" (1/1) ... [2022-11-20 12:10:50,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eef19fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:50, skipping insertion in model container [2022-11-20 12:10:50,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:10:50" (1/1) ... [2022-11-20 12:10:50,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:10:50,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:10:51,074 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:10:51,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:51,552 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:10:51,573 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:10:51,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:10:51,768 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:10:51,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51 WrapperNode [2022-11-20 12:10:51,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:10:51,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:51,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:10:51,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:10:51,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,915 INFO L138 Inliner]: procedures = 500, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-11-20 12:10:51,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:10:51,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:10:51,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:10:51,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:10:51,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:10:51,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:10:51,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:10:51,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:10:51,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (1/1) ... [2022-11-20 12:10:51,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:52,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:10:52,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:10:52,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:10:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 12:10:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 12:10:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 12:10:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:10:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:10:52,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:10:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:10:52,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:10:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:10:52,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:10:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 12:10:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:10:52,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:10:52,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:10:52,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:10:52,572 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:10:52,577 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:10:52,578 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:10:52,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:52 BoogieIcfgContainer [2022-11-20 12:10:52,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:10:52,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:10:52,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:10:52,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:10:52,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:10:50" (1/3) ... [2022-11-20 12:10:52,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f062d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:52, skipping insertion in model container [2022-11-20 12:10:52,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:10:51" (2/3) ... [2022-11-20 12:10:52,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21f062d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:10:52, skipping insertion in model container [2022-11-20 12:10:52,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:52" (3/3) ... [2022-11-20 12:10:52,602 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-11-20 12:10:52,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:10:52,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:10:52,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:10:52,698 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=LoopsAndPotentialCycles, 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;@c5724f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:10:52,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:10:52,702 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) [2022-11-20 12:10:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:10:52,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:52,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:52,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:10:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2022-11-20 12:10:52,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:52,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112282556] [2022-11-20 12:10:52,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:52,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:10:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:53,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:53,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112282556] [2022-11-20 12:10:53,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112282556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:53,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:53,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:10:53,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751569586] [2022-11-20 12:10:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:53,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:10:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:53,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:10:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:10:53,517 INFO L87 Difference]: Start difference. First 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) Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:53,602 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-20 12:10:53,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:10:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-20 12:10:53,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:53,616 INFO L225 Difference]: With dead ends: 22 [2022-11-20 12:10:53,616 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 12:10:53,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:10:53,624 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:53,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:10:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 12:10:53,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 12:10:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:10:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-20 12:10:53,662 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2022-11-20 12:10:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:53,664 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-20 12:10:53,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 12:10:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-20 12:10:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:10:53,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:53,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:53,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:10:53,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:10:53,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1427713972, now seen corresponding path program 1 times [2022-11-20 12:10:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:53,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063966846] [2022-11-20 12:10:53,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:10:53,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:10:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:10:53,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:10:53,783 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:10:53,785 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-20 12:10:53,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-20 12:10:53,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:10:53,814 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:10:53,818 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:10:53,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:10:53 BoogieIcfgContainer [2022-11-20 12:10:53,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:10:53,846 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:10:53,846 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:10:53,846 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:10:53,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:10:52" (3/4) ... [2022-11-20 12:10:53,850 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:10:53,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:10:53,851 INFO L158 Benchmark]: Toolchain (without parser) took 3183.92ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 137.1MB in the beginning and 169.8MB in the end (delta: -32.7MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2022-11-20 12:10:53,851 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:10:53,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1101.30ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 75.1MB in the end (delta: 62.0MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2022-11-20 12:10:53,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 147.46ms. Allocated memory is still 169.9MB. Free memory was 75.1MB in the beginning and 135.4MB in the end (delta: -60.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 12:10:53,853 INFO L158 Benchmark]: Boogie Preprocessor took 57.16ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 134.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:10:53,854 INFO L158 Benchmark]: RCFGBuilder took 603.54ms. Allocated memory is still 169.9MB. Free memory was 134.3MB in the beginning and 119.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:10:53,854 INFO L158 Benchmark]: TraceAbstraction took 1263.60ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 118.6MB in the beginning and 170.9MB in the end (delta: -52.3MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2022-11-20 12:10:53,855 INFO L158 Benchmark]: Witness Printer took 4.35ms. Allocated memory is still 205.5MB. Free memory was 170.9MB in the beginning and 169.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:10:53,858 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1101.30ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 75.1MB in the end (delta: 62.0MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 147.46ms. Allocated memory is still 169.9MB. Free memory was 75.1MB in the beginning and 135.4MB in the end (delta: -60.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.16ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 134.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 603.54ms. Allocated memory is still 169.9MB. Free memory was 134.3MB in the beginning and 119.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1263.60ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 118.6MB in the beginning and 170.9MB in the end (delta: -52.3MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Witness Printer took 4.35ms. Allocated memory is still 205.5MB. Free memory was 170.9MB in the beginning and 169.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1572]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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] [L1581] 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) [L1581] RET printLine("Calling bad()...") VAL [\old(argc)=1073741834, argc=1073741834, argv={1073741830:1073741835}, argv={1073741830:1073741835}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1567] *dataPtr1 = data [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] --data VAL [data=-2147483648, data=-2147483648, data={6:0}, dataPtr1={6:0}, dataPtr2={6:0}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 20 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-11-20 12:10:53,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --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 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:10:56,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:10:56,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:10:56,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:10:56,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:10:56,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:10:56,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:10:56,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:10:56,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:10:56,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:10:56,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:10:56,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:10:56,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:10:56,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:10:56,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:10:56,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:10:56,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:10:56,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:10:56,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:10:56,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:10:56,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:10:56,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:10:56,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:10:56,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:10:56,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:10:56,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:10:56,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:10:56,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:10:56,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:10:56,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:10:56,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:10:56,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:10:56,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:10:56,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:10:56,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:10:56,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:10:56,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:10:56,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:10:56,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:10:56,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:10:56,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:10:56,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-20 12:10:56,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:10:56,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:10:56,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:10:56,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:10:56,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:10:56,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:10:56,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:10:56,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:10:56,405 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:10:56,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:10:56,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:10:56,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:10:56,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:10:56,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:10:56,407 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:10:56,407 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:10:56,407 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:10:56,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:10:56,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:10:56,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:10:56,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:10:56,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:10:56,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:10:56,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:10:56,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:10:56,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:10:56,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:10:56,410 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:10:56,410 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:10:56,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:10:56,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:10:56,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:10:56,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:10:56,412 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5d466dc215f8ed26ed8263d386e990454787d0ed2acd2f0781ac9337fda305 [2022-11-20 12:10:56,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:10:56,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:10:56,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:10:56,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:10:56,837 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:10:56,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-11-20 12:10:59,920 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:11:00,288 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:11:00,288 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-11-20 12:11:00,326 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data/2dc2a3405/ee781d4e14bd49249a0654778b4756d0/FLAG99468d29d [2022-11-20 12:11:00,345 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/data/2dc2a3405/ee781d4e14bd49249a0654778b4756d0 [2022-11-20 12:11:00,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:11:00,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:11:00,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:00,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:11:00,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:11:00,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:00" (1/1) ... [2022-11-20 12:11:00,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d4bcb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:00, skipping insertion in model container [2022-11-20 12:11:00,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:11:00" (1/1) ... [2022-11-20 12:11:00,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:11:00,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:11:00,986 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:11:01,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:01,735 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:11:01,802 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:11:01,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:11:02,037 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:11:02,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02 WrapperNode [2022-11-20 12:11:02,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:11:02,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:02,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:11:02,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:11:02,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,094 INFO L138 Inliner]: procedures = 505, calls = 68, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-11-20 12:11:02,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:11:02,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:11:02,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:11:02,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:11:02,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:11:02,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:11:02,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:11:02,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:11:02,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (1/1) ... [2022-11-20 12:11:02,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:11:02,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:11:02,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:11:02,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:11:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 12:11:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 12:11:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 12:11:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:11:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:11:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:11:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:11:02,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:11:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:11:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:11:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 12:11:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 12:11:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:11:02,375 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:11:02,377 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:11:02,595 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:11:02,600 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:11:02,610 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:11:02,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:02 BoogieIcfgContainer [2022-11-20 12:11:02,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:11:02,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:11:02,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:11:02,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:11:02,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:11:00" (1/3) ... [2022-11-20 12:11:02,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdada79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:02, skipping insertion in model container [2022-11-20 12:11:02,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:11:02" (2/3) ... [2022-11-20 12:11:02,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdada79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:11:02, skipping insertion in model container [2022-11-20 12:11:02,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:02" (3/3) ... [2022-11-20 12:11:02,634 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_32_bad.i [2022-11-20 12:11:02,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:11:02,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2022-11-20 12:11:02,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bdada79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:11:02, skipping insertion in model container [2022-11-20 12:11:02,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:11:02,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:11:02,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:11:02,669 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:11:02,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:11:02" (3/3) ... [2022-11-20 12:11:02,673 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:11:02,680 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-20 12:11:02,684 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-20 12:11:02,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 12:11:02,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:11:02,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:11:02,739 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:11:02,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:11:02,745 INFO L158 Benchmark]: Toolchain (without parser) took 2391.65ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 48.3MB in the beginning and 51.6MB in the end (delta: -3.2MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,746 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 51.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:11:02,746 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1682.97ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 48.1MB in the beginning and 77.3MB in the end (delta: -29.2MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,747 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.40ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 74.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,747 INFO L158 Benchmark]: Boogie Preprocessor took 28.62ms. Allocated memory is still 104.9MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,748 INFO L158 Benchmark]: RCFGBuilder took 485.40ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 56.9MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,748 INFO L158 Benchmark]: TraceAbstraction took 53.79ms. Allocated memory is still 104.9MB. Free memory was 56.3MB in the beginning and 54.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,749 INFO L158 Benchmark]: Witness Printer took 75.27ms. Allocated memory is still 104.9MB. Free memory was 54.1MB in the beginning and 51.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:11:02,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory was 50.1MB in the beginning and 50.0MB in the end (delta: 51.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1682.97ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 48.1MB in the beginning and 77.3MB in the end (delta: -29.2MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.40ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 74.0MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.62ms. Allocated memory is still 104.9MB. Free memory was 74.0MB in the beginning and 72.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.40ms. Allocated memory is still 104.9MB. Free memory was 72.0MB in the beginning and 56.9MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 53.79ms. Allocated memory is still 104.9MB. Free memory was 56.3MB in the beginning and 54.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 75.27ms. Allocated memory is still 104.9MB. Free memory was 54.1MB in the beginning and 51.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specification because the program does not contain any specification. RESULT: Ultimate proved your program to be correct! [2022-11-20 12:11:02,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3de2f58a-2612-41a6-b716-ace0542f2c9f/bin/uautomizer-ug76WZFUDN/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: TRUE