./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/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_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/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_06599bcb-caee-4a84-b19c-2b8dec5182eb/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 c250de366060070ba4c35e5dee5f788919ae086e7d982cfe0ff3210cd40565f4 --- 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 12:32:10,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:10,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:10,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:10,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:10,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:10,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:10,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:10,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:10,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:10,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:10,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:10,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:10,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:10,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:10,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:10,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:10,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:10,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:10,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:10,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:10,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:10,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:10,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:10,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:10,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:10,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:10,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:10,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:10,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:10,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:10,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:10,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:10,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:10,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:10,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:10,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:10,339 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:10,339 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:10,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:10,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:10,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 12:32:10,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:10,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:10,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:10,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:10,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:10,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:10,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:10,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:10,385 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:10,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:10,387 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:32:10,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:32:10,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:10,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:10,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:10,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:10,388 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:32:10,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:10,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:10,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:10,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:10,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:10,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:10,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:10,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:10,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:10,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:10,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:32:10,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:32:10,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:10,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:10,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:10,392 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_06599bcb-caee-4a84-b19c-2b8dec5182eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c250de366060070ba4c35e5dee5f788919ae086e7d982cfe0ff3210cd40565f4 [2022-11-20 12:32:10,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:10,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:10,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:10,709 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:10,709 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:10,711 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i [2022-11-20 12:32:13,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:14,301 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:14,302 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i [2022-11-20 12:32:14,327 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data/968ad7b20/c920d38f37744149b362bf65cd356a94/FLAG788106f13 [2022-11-20 12:32:14,348 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data/968ad7b20/c920d38f37744149b362bf65cd356a94 [2022-11-20 12:32:14,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:14,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:14,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:14,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:14,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:14,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:14" (1/1) ... [2022-11-20 12:32:14,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d87b827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:14, skipping insertion in model container [2022-11-20 12:32:14,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:14" (1/1) ... [2022-11-20 12:32:14,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:14,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:14,949 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:32:15,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:15,628 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:15,648 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:32:15,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:15,822 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:15,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15 WrapperNode [2022-11-20 12:32:15,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:15,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:15,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:15,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:15,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,908 INFO L138 Inliner]: procedures = 504, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 62 [2022-11-20 12:32:15,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:15,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:15,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:15,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:15,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,949 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:15,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:15,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:15,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:15,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (1/1) ... [2022-11-20 12:32:15,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:15,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:15,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:15,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:16,043 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 12:32:16,043 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 12:32:16,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 12:32:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:32:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 12:32:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:16,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:32:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 12:32:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:32:16,203 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:16,205 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:16,438 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:16,444 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:16,446 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:32:16,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:16 BoogieIcfgContainer [2022-11-20 12:32:16,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:16,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:16,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:16,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:16,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:14" (1/3) ... [2022-11-20 12:32:16,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21af9a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:16, skipping insertion in model container [2022-11-20 12:32:16,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:15" (2/3) ... [2022-11-20 12:32:16,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21af9a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:16, skipping insertion in model container [2022-11-20 12:32:16,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:16" (3/3) ... [2022-11-20 12:32:16,466 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_54_bad.i [2022-11-20 12:32:16,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:16,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:32:16,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:32:16,571 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;@7586a48b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:32:16,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:32:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 states have internal predecessors, (23), 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 12:32:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 12:32:16,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:16,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:16,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:32:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 972561618, now seen corresponding path program 1 times [2022-11-20 12:32:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666414529] [2022-11-20 12:32:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:16,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:17,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:32:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:32:17,208 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 12:32:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:32:17,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666414529] [2022-11-20 12:32:17,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666414529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:32:17,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:32:17,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:32:17,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463374428] [2022-11-20 12:32:17,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:32:17,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:32:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:32:17,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:32:17,271 INFO L87 Difference]: Start difference. First operand has 26 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 22 states have internal predecessors, (23), 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 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 12:32:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:32:17,322 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-20 12:32:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:32:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 12:32:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:32:17,332 INFO L225 Difference]: With dead ends: 26 [2022-11-20 12:32:17,332 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 12:32:17,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:32:17,339 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:32:17,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 48 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:32:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 12:32:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 12:32:17,374 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 12:32:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-20 12:32:17,376 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2022-11-20 12:32:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:32:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-20 12:32:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 12:32:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-20 12:32:17,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 12:32:17,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:32:17,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:32:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:32:17,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:32:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:32:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash 84639140, now seen corresponding path program 1 times [2022-11-20 12:32:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:32:17,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178238372] [2022-11-20 12:32:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:32:17,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:32:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:17,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:32:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:32:17,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:32:17,472 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:32:17,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-20 12:32:17,484 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-20 12:32:17,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:32:17,488 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:32:17,499 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:32:17,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:32:17 BoogieIcfgContainer [2022-11-20 12:32:17,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:32:17,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:32:17,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:32:17,556 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:32:17,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:16" (3/4) ... [2022-11-20 12:32:17,561 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:32:17,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:32:17,562 INFO L158 Benchmark]: Toolchain (without parser) took 3208.83ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 72.6MB in the beginning and 101.9MB in the end (delta: -29.3MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-11-20 12:32:17,562 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:32:17,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1467.29ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 72.5MB in the beginning and 96.9MB in the end (delta: -24.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2022-11-20 12:32:17,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.19ms. Allocated memory is still 180.4MB. Free memory was 96.9MB in the beginning and 93.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:32:17,572 INFO L158 Benchmark]: Boogie Preprocessor took 44.12ms. Allocated memory is still 180.4MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:32:17,572 INFO L158 Benchmark]: RCFGBuilder took 497.82ms. Allocated memory is still 180.4MB. Free memory was 91.8MB in the beginning and 144.9MB in the end (delta: -53.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:32:17,573 INFO L158 Benchmark]: TraceAbstraction took 1100.19ms. Allocated memory is still 180.4MB. Free memory was 144.9MB in the beginning and 101.9MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-11-20 12:32:17,573 INFO L158 Benchmark]: Witness Printer took 6.18ms. Allocated memory is still 180.4MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:32:17,576 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 138.4MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1467.29ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 72.5MB in the beginning and 96.9MB in the end (delta: -24.4MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.19ms. Allocated memory is still 180.4MB. Free memory was 96.9MB in the beginning and 93.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.12ms. Allocated memory is still 180.4MB. Free memory was 93.9MB in the beginning and 91.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.82ms. Allocated memory is still 180.4MB. Free memory was 91.8MB in the beginning and 144.9MB in the end (delta: -53.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1100.19ms. Allocated memory is still 180.4MB. Free memory was 144.9MB in the beginning and 101.9MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 6.18ms. Allocated memory is still 180.4MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1592]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [\old(argc)=1073741829, argc=1073741829, argv={1073741827:1073741830}, argv={1073741827:1073741830}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_predec_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1564] CALL CWE191_Integer_Underflow__int_fgets_predec_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_predec_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_predec_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_predec_54e_badSink(data) [L1592] --data VAL [\old(data)=-2147483648, data=-2147483648, 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: 1592]: 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, 26 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 24 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 14 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 12:32:17,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/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_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/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_06599bcb-caee-4a84-b19c-2b8dec5182eb/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 c250de366060070ba4c35e5dee5f788919ae086e7d982cfe0ff3210cd40565f4 --- 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 12:32:20,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:32:20,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:32:20,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:32:20,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:32:20,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:32:20,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:32:20,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:32:20,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:32:20,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:32:20,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:32:20,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:32:20,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:32:20,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:32:20,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:32:20,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:32:20,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:32:20,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:32:20,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:32:20,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:32:20,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:32:20,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:32:20,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:32:20,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:32:20,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:32:20,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:32:20,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:32:20,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:32:20,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:32:20,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:32:20,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:32:20,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:32:20,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:32:20,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:32:20,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:32:20,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:32:20,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:32:20,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:32:20,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:32:20,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:32:20,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:32:20,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-20 12:32:20,283 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:32:20,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:32:20,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:32:20,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:32:20,286 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:32:20,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:32:20,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:32:20,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:32:20,288 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:32:20,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:32:20,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:32:20,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:32:20,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:32:20,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:32:20,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:32:20,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:32:20,290 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:32:20,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:32:20,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:32:20,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:32:20,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:32:20,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:32:20,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:32:20,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:20,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:32:20,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:32:20,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:32:20,292 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:32:20,293 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:32:20,293 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:32:20,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:32:20,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:32:20,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:32:20,294 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_06599bcb-caee-4a84-b19c-2b8dec5182eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c250de366060070ba4c35e5dee5f788919ae086e7d982cfe0ff3210cd40565f4 [2022-11-20 12:32:20,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:32:20,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:32:20,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:32:20,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:32:20,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:32:20,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i [2022-11-20 12:32:24,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:32:24,528 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:32:24,530 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_54_bad.i [2022-11-20 12:32:24,562 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data/526a4b054/37f47ffef2bc441c91b5db38d35870dc/FLAG37b1f9e5b [2022-11-20 12:32:24,588 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/data/526a4b054/37f47ffef2bc441c91b5db38d35870dc [2022-11-20 12:32:24,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:32:24,593 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:32:24,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:24,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:32:24,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:32:24,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:24" (1/1) ... [2022-11-20 12:32:24,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d5bc92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:24, skipping insertion in model container [2022-11-20 12:32:24,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:32:24" (1/1) ... [2022-11-20 12:32:24,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:32:24,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:32:25,134 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:32:25,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:25,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:32:25,819 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-20 12:32:25,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:32:26,011 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:32:26,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26 WrapperNode [2022-11-20 12:32:26,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:32:26,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:26,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:32:26,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:32:26,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,076 INFO L138 Inliner]: procedures = 509, calls = 66, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 59 [2022-11-20 12:32:26,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:32:26,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:32:26,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:32:26,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:32:26,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,104 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:32:26,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:32:26,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:32:26,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:32:26,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (1/1) ... [2022-11-20 12:32:26,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:32:26,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:32:26,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:32:26,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:32:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-20 12:32:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-20 12:32:26,218 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-20 12:32:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:32:26,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:32:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:32:26,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:32:26,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:32:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:32:26,221 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-20 12:32:26,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-20 12:32:26,380 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:32:26,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:32:26,557 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:32:26,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:32:26,565 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:32:26,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:26 BoogieIcfgContainer [2022-11-20 12:32:26,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:32:26,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:32:26,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:32:26,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:32:26,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:32:24" (1/3) ... [2022-11-20 12:32:26,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766851c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:26, skipping insertion in model container [2022-11-20 12:32:26,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:32:26" (2/3) ... [2022-11-20 12:32:26,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766851c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:32:26, skipping insertion in model container [2022-11-20 12:32:26,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:26" (3/3) ... [2022-11-20 12:32:26,587 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_54_bad.i [2022-11-20 12:32:26,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:32:26,609 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2022-11-20 12:32:26,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766851c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:32:26, skipping insertion in model container [2022-11-20 12:32:26,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:32:26,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:32:26,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:32:26,612 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:32:26,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:32:26" (3/3) ... [2022-11-20 12:32:26,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:32:26,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2022-11-20 12:32:26,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 12:32:26,631 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 12:32:26,631 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:32:26,631 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:32:26,672 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:32:26,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:32:26,674 INFO L158 Benchmark]: Toolchain (without parser) took 2080.42ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 58.2MB in the beginning and 77.2MB in the end (delta: -19.0MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,674 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:32:26,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1413.43ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 58.0MB in the beginning and 70.2MB in the end (delta: -12.2MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.88ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 67.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,679 INFO L158 Benchmark]: Boogie Preprocessor took 32.77ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,679 INFO L158 Benchmark]: RCFGBuilder took 456.53ms. Allocated memory is still 113.2MB. Free memory was 65.1MB in the beginning and 82.9MB in the end (delta: -17.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,680 INFO L158 Benchmark]: TraceAbstraction took 41.79ms. Allocated memory is still 113.2MB. Free memory was 82.2MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,680 INFO L158 Benchmark]: Witness Printer took 60.48ms. Allocated memory is still 113.2MB. Free memory was 80.7MB in the beginning and 77.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:32:26,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1413.43ms. Allocated memory was 83.9MB in the beginning and 113.2MB in the end (delta: 29.4MB). Free memory was 58.0MB in the beginning and 70.2MB in the end (delta: -12.2MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.88ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 67.2MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.77ms. Allocated memory is still 113.2MB. Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.53ms. Allocated memory is still 113.2MB. Free memory was 65.1MB in the beginning and 82.9MB in the end (delta: -17.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 41.79ms. Allocated memory is still 113.2MB. Free memory was 82.2MB in the beginning and 80.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 60.48ms. Allocated memory is still 113.2MB. Free memory was 80.7MB in the beginning and 77.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. 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 12:32:26,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06599bcb-caee-4a84-b19c-2b8dec5182eb/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