./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R --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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- 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-38b53e6 [2022-11-25 17:02:15,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:02:15,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:02:15,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:02:15,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:02:15,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:02:15,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:02:15,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:02:15,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:02:15,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:02:15,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:02:15,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:02:15,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:02:15,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:02:15,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:02:15,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:02:15,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:02:15,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:02:15,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:02:15,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:02:15,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:02:15,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:02:15,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:02:15,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:02:15,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:02:15,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:02:15,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:02:15,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:02:15,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:02:15,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:02:15,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:02:15,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:02:15,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:02:15,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:02:15,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:02:15,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:02:15,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:02:15,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:02:15,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:02:15,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:02:15,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:02:15,752 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-25 17:02:15,781 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:02:15,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:02:15,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:02:15,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:02:15,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:02:15,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:02:15,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:02:15,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:02:15,785 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:02:15,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:02:15,786 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:02:15,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:02:15,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:02:15,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:02:15,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:02:15,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:02:15,787 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:02:15,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:02:15,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:02:15,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:02:15,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:02:15,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:02:15,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:02:15,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:02:15,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:02:15,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:02:15,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:02:15,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:02:15,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:02:15,791 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:02:15,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:02:15,792 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:02:15,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:02:15,792 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2022-11-25 17:02:16,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:02:16,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:02:16,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:02:16,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:02:16,205 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:02:16,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-11-25 17:02:20,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:02:20,643 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:02:20,644 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-11-25 17:02:20,672 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data/efbf27295/a46e0427ebd0403b94a9c1734ce6cb1a/FLAGf9e37d0e2 [2022-11-25 17:02:20,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data/efbf27295/a46e0427ebd0403b94a9c1734ce6cb1a [2022-11-25 17:02:20,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:02:20,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:02:20,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:02:20,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:02:20,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:02:20,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:02:20" (1/1) ... [2022-11-25 17:02:20,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44988a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:20, skipping insertion in model container [2022-11-25 17:02:20,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:02:20" (1/1) ... [2022-11-25 17:02:20,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:02:20,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:02:21,246 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:02:21,946 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:02:21,954 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:21,957 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:21,961 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:21,962 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:22,001 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:02:22,009 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:02:22,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:02:22,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:02:22,052 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:02:22,113 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:02:22,115 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:22,116 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:22,119 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:22,121 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:22,127 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:02:22,130 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:02:22,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:02:22,265 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:02:22,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22 WrapperNode [2022-11-25 17:02:22,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:02:22,267 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:02:22,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:02:22,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:02:22,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,336 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-11-25 17:02:22,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:02:22,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:02:22,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:02:22,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:02:22,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,375 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:02:22,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:02:22,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:02:22,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:02:22,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (1/1) ... [2022-11-25 17:02:22,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:02:22,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:02:22,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:02:22,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:02:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:02:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:02:22,563 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:02:22,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:02:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 17:02:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:02:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:02:22,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:02:22,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:02:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:02:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:02:22,836 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:02:22,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:02:23,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:02:23,037 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:02:23,037 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:02:23,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:23 BoogieIcfgContainer [2022-11-25 17:02:23,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:02:23,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:02:23,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:02:23,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:02:23,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:02:20" (1/3) ... [2022-11-25 17:02:23,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9b0471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:02:23, skipping insertion in model container [2022-11-25 17:02:23,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:22" (2/3) ... [2022-11-25 17:02:23,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9b0471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:02:23, skipping insertion in model container [2022-11-25 17:02:23,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:23" (3/3) ... [2022-11-25 17:02:23,054 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-11-25 17:02:23,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:02:23,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:02:23,143 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:02:23,152 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;@38493600, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:02:23,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:02:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 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) [2022-11-25 17:02:23,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:02:23,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:02:23,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:23,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:02:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-11-25 17:02:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:23,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558412614] [2022-11-25 17:02:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:23,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:02:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:02:23,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558412614] [2022-11-25 17:02:23,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558412614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:23,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:23,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:02:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994279902] [2022-11-25 17:02:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:02:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:02:23,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:02:23,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:23,621 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-25 17:02:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:02:23,665 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-11-25 17:02:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:02:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-11-25 17:02:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:02:23,678 INFO L225 Difference]: With dead ends: 40 [2022-11-25 17:02:23,679 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 17:02:23,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:23,687 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:02:23,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:02:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 17:02:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-25 17:02:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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) [2022-11-25 17:02:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-25 17:02:23,748 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-11-25 17:02:23,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:02:23,752 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-25 17:02:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-25 17:02:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-25 17:02:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:02:23,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:02:23,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:23,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:02:23,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:02:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-11-25 17:02:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:02:23,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783639604] [2022-11-25 17:02:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:23,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:02:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:02:23,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:02:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:02:23,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:02:23,944 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:02:23,947 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:02:23,949 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:02:23,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:02:23,957 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:02:23,963 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:02:24,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:02:24 BoogieIcfgContainer [2022-11-25 17:02:24,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:02:24,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:02:24,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:02:24,044 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:02:24,046 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:23" (3/4) ... [2022-11-25 17:02:24,050 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:02:24,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:02:24,052 INFO L158 Benchmark]: Toolchain (without parser) took 3350.20ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 123.4MB in the beginning and 137.8MB in the end (delta: -14.4MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,054 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 159.4MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:02:24,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1562.78ms. Allocated memory is still 159.4MB. Free memory was 123.4MB in the beginning and 64.0MB in the end (delta: 59.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,061 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.85ms. Allocated memory is still 159.4MB. Free memory was 64.0MB in the beginning and 60.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,068 INFO L158 Benchmark]: Boogie Preprocessor took 42.56ms. Allocated memory is still 159.4MB. Free memory was 60.7MB in the beginning and 59.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,069 INFO L158 Benchmark]: RCFGBuilder took 659.73ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 59.2MB in the beginning and 171.3MB in the end (delta: -112.1MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,073 INFO L158 Benchmark]: TraceAbstraction took 992.07ms. Allocated memory is still 209.7MB. Free memory was 170.3MB in the beginning and 138.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,074 INFO L158 Benchmark]: Witness Printer took 11.73ms. Allocated memory is still 209.7MB. Free memory was 138.8MB in the beginning and 137.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:24,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 159.4MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1562.78ms. Allocated memory is still 159.4MB. Free memory was 123.4MB in the beginning and 64.0MB in the end (delta: 59.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.85ms. Allocated memory is still 159.4MB. Free memory was 64.0MB in the beginning and 60.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.56ms. Allocated memory is still 159.4MB. Free memory was 60.7MB in the beginning and 59.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 659.73ms. Allocated memory was 159.4MB in the beginning and 209.7MB in the end (delta: 50.3MB). Free memory was 59.2MB in the beginning and 171.3MB in the end (delta: -112.1MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * TraceAbstraction took 992.07ms. Allocated memory is still 209.7MB. Free memory was 170.3MB in the beginning and 138.8MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 11.73ms. Allocated memory is still 209.7MB. Free memory was 138.8MB in the beginning and 137.8MB 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1579] 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}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=1073741828, argc=1073741828, 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, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [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, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 25 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 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 [2022-11-25 17:02:24,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R --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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- 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-38b53e6 [2022-11-25 17:02:27,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:02:27,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:02:27,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:02:27,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:02:27,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:02:27,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:02:27,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:02:27,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:02:27,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:02:27,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:02:27,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:02:27,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:02:27,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:02:27,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:02:27,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:02:27,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:02:27,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:02:27,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:02:27,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:02:27,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:02:27,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:02:27,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:02:27,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:02:27,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:02:27,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:02:27,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:02:27,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:02:27,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:02:27,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:02:27,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:02:27,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:02:27,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:02:27,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:02:27,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:02:27,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:02:27,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:02:27,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:02:27,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:02:27,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:02:27,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:02:27,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2022-11-25 17:02:27,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:02:27,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:02:27,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:02:27,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:02:27,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:02:27,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:02:27,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:02:27,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:02:27,344 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:02:27,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:02:27,345 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:02:27,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:02:27,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:02:27,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:02:27,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:02:27,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:02:27,351 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:02:27,351 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:02:27,351 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:02:27,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:02:27,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:02:27,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:02:27,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:02:27,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:02:27,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:02:27,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:02:27,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:02:27,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:02:27,355 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:02:27,355 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:02:27,355 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:02:27,356 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:02:27,356 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:02:27,356 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:02:27,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:02:27,357 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:02:27,358 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2022-11-25 17:02:27,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:02:27,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:02:27,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:02:27,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:02:27,900 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:02:27,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-11-25 17:02:31,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:02:32,515 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:02:32,517 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-11-25 17:02:32,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data/51992cd78/cb3f6365e88c49c5b884485c7422ae3b/FLAGa08f58aa7 [2022-11-25 17:02:32,579 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/data/51992cd78/cb3f6365e88c49c5b884485c7422ae3b [2022-11-25 17:02:32,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:02:32,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:02:32,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:02:32,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:02:32,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:02:32,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:02:32" (1/1) ... [2022-11-25 17:02:32,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30294d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:32, skipping insertion in model container [2022-11-25 17:02:32,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:02:32" (1/1) ... [2022-11-25 17:02:32,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:02:32,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:02:33,181 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:02:33,861 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:02:33,871 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:33,876 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:33,888 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:33,890 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:33,936 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:02:33,951 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:02:33,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:02:33,988 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:02:34,031 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:02:34,147 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 17:02:34,150 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:34,151 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 17:02:34,155 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:34,156 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 17:02:34,161 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 17:02:34,164 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 17:02:34,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:02:34,368 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:02:34,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34 WrapperNode [2022-11-25 17:02:34,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:02:34,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:02:34,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:02:34,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:02:34,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,483 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-11-25 17:02:34,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:02:34,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:02:34,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:02:34,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:02:34,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:02:34,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:02:34,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:02:34,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:02:34,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (1/1) ... [2022-11-25 17:02:34,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:02:34,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:02:34,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:02:34,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:02:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 17:02:34,653 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 17:02:34,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 17:02:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:02:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:02:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:02:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:02:34,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:02:34,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:02:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 17:02:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 17:02:34,895 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:02:34,898 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:02:35,220 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:02:35,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:02:35,228 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:02:35,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:35 BoogieIcfgContainer [2022-11-25 17:02:35,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:02:35,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:02:35,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:02:35,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:02:35,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:02:32" (1/3) ... [2022-11-25 17:02:35,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8808548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:02:35, skipping insertion in model container [2022-11-25 17:02:35,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:02:34" (2/3) ... [2022-11-25 17:02:35,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8808548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:02:35, skipping insertion in model container [2022-11-25 17:02:35,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:35" (3/3) ... [2022-11-25 17:02:35,250 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2022-11-25 17:02:35,276 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:02:35,277 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:02:35,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:02:35,374 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;@23fd9b19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:02:35,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:02:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 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) [2022-11-25 17:02:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 17:02:35,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:02:35,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:35,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:02:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:35,408 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-11-25 17:02:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:02:35,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238276515] [2022-11-25 17:02:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:35,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:02:35,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:02:35,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:02:35,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:02:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:02:35,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:02:35,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:02:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:02:35,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:02:35,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:02:35,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238276515] [2022-11-25 17:02:35,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238276515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:02:35,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:02:35,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:02:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109588739] [2022-11-25 17:02:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:02:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:02:35,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:02:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:02:35,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:35,891 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 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 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2022-11-25 17:02:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:02:35,949 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-25 17:02:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:02:35,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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 [2022-11-25 17:02:35,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:02:35,964 INFO L225 Difference]: With dead ends: 39 [2022-11-25 17:02:35,965 INFO L226 Difference]: Without dead ends: 15 [2022-11-25 17:02:35,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:02:35,978 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:02:35,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:02:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-25 17:02:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-25 17:02:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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) [2022-11-25 17:02:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-25 17:02:36,034 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-25 17:02:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:02:36,038 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-25 17:02:36,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 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) [2022-11-25 17:02:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-25 17:02:36,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 17:02:36,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:02:36,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:02:36,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:02:36,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:02:36,258 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 17:02:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:02:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-11-25 17:02:36,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:02:36,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990467091] [2022-11-25 17:02:36,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:02:36,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:02:36,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:02:36,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:02:36,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 17:02:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:02:36,450 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:02:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:02:36,552 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:02:36,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:02:36,555 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 17:02:36,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 17:02:36,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:02:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:02:36,775 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 17:02:36,781 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:02:36,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:02:36 BoogieIcfgContainer [2022-11-25 17:02:36,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:02:36,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:02:36,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:02:36,820 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:02:36,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:02:35" (3/4) ... [2022-11-25 17:02:36,826 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:02:36,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:02:36,827 INFO L158 Benchmark]: Toolchain (without parser) took 4242.29ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 35.9MB in the beginning and 44.1MB in the end (delta: -8.2MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-25 17:02:36,828 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 71.3MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:02:36,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1778.27ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 35.7MB in the beginning and 46.9MB in the end (delta: -11.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-25 17:02:36,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 123.55ms. Allocated memory is still 94.4MB. Free memory was 46.9MB in the beginning and 43.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:02:36,830 INFO L158 Benchmark]: Boogie Preprocessor took 61.98ms. Allocated memory is still 94.4MB. Free memory was 43.7MB in the beginning and 67.1MB in the end (delta: -23.4MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:36,830 INFO L158 Benchmark]: RCFGBuilder took 674.40ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 52.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 17:02:36,831 INFO L158 Benchmark]: TraceAbstraction took 1583.53ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 44.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-11-25 17:02:36,832 INFO L158 Benchmark]: Witness Printer took 6.21ms. Allocated memory is still 94.4MB. Free memory is still 44.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:02:36,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 71.3MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1778.27ms. Allocated memory was 71.3MB in the beginning and 94.4MB in the end (delta: 23.1MB). Free memory was 35.7MB in the beginning and 46.9MB in the end (delta: -11.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 123.55ms. Allocated memory is still 94.4MB. Free memory was 46.9MB in the beginning and 43.7MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.98ms. Allocated memory is still 94.4MB. Free memory was 43.7MB in the beginning and 67.1MB in the end (delta: -23.4MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * RCFGBuilder took 674.40ms. Allocated memory is still 94.4MB. Free memory was 67.1MB in the beginning and 52.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1583.53ms. Allocated memory is still 94.4MB. Free memory was 52.0MB in the beginning and 44.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Witness Printer took 6.21ms. Allocated memory is still 94.4MB. Free memory is still 44.1MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. 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); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1579] 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}, STATIC_CONST_FIVE=5] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [\old(argc)=12, argc=12, argv={13:12}, argv={13:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [data=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, STATIC_CONST_FIVE=5] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [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, STATIC_CONST_FIVE=5] [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [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, STATIC_CONST_FIVE=5] - UnprovableResult [Line: 1570]: 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, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 2 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 [2022-11-25 17:02:36,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ea8fdc-3f3a-4ce7-b00a-431412fc316c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample