./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53bad581b7b35373c4d80090e0a3e21e910c9a8bc5aac20882d7709aaf2b2638 --- 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-2329fc7 [2022-12-14 08:51:20,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:51:20,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:51:20,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:51:20,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:51:20,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:51:20,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:51:20,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:51:20,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:51:20,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:51:20,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:51:20,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:51:20,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:51:20,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:51:20,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:51:20,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:51:20,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:51:20,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:51:20,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:51:20,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:51:20,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:51:20,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:51:20,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:51:20,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:51:20,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:51:20,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:51:20,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:51:20,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:51:20,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:51:20,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:51:20,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:51:20,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:51:20,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:51:20,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:51:20,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:51:20,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:51:20,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:51:20,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:51:20,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:51:20,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:51:20,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:51:20,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 08:51:20,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:51:20,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:51:20,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:51:20,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:51:20,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:51:20,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:51:20,359 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:51:20,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:51:20,360 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:51:20,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:51:20,360 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:51:20,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:51:20,360 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:51:20,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:51:20,361 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:51:20,361 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:51:20,361 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:51:20,361 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:51:20,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:51:20,362 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:51:20,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:51:20,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:51:20,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:51:20,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:51:20,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:51:20,363 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:51:20,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:51:20,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:51:20,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:51:20,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:51:20,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:51:20,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:20,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:51:20,364 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:51:20,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53bad581b7b35373c4d80090e0a3e21e910c9a8bc5aac20882d7709aaf2b2638 [2022-12-14 08:51:20,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:51:20,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:51:20,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:51:20,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:51:20,564 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:51:20,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i [2022-12-14 08:51:23,178 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:51:23,422 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:51:23,423 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i [2022-12-14 08:51:23,439 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data/432082b98/4d1ece29df9a49a7896e8988189237c9/FLAG0477040c7 [2022-12-14 08:51:23,450 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data/432082b98/4d1ece29df9a49a7896e8988189237c9 [2022-12-14 08:51:23,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:51:23,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:51:23,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:23,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:51:23,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:51:23,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:23" (1/1) ... [2022-12-14 08:51:23,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29293b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:23, skipping insertion in model container [2022-12-14 08:51:23,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:23" (1/1) ... [2022-12-14 08:51:23,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:51:23,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:51:23,829 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:24,258 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:24,264 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:24,266 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:24,268 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:24,268 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:24,632 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:24,638 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:24,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:24,646 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:51:24,662 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:24,707 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:24,709 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:24,710 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:24,712 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:24,713 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:24,726 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:24,728 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:24,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:25,017 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:51:25,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25 WrapperNode [2022-12-14 08:51:25,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:25,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:25,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:51:25,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:51:25,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,065 INFO L138 Inliner]: procedures = 938, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-14 08:51:25,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:25,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:51:25,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:51:25,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:51:25,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:51:25,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:51:25,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:51:25,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:51:25,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (1/1) ... [2022-12-14 08:51:25,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:25,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:25,107 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:51:25,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:51:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:51:25,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:51:25,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 08:51:25,146 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-14 08:51:25,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:51:25,267 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:51:25,268 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:51:25,379 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:51:25,408 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:51:25,408 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:51:25,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:25 BoogieIcfgContainer [2022-12-14 08:51:25,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:51:25,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:51:25,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:51:25,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:51:25,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:51:23" (1/3) ... [2022-12-14 08:51:25,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59494b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:25, skipping insertion in model container [2022-12-14 08:51:25,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:25" (2/3) ... [2022-12-14 08:51:25,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59494b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:25, skipping insertion in model container [2022-12-14 08:51:25,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:25" (3/3) ... [2022-12-14 08:51:25,422 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_02_bad.i [2022-12-14 08:51:25,438 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:51:25,439 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:51:25,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:51:25,490 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=FINITE_AUTOMATA, 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;@71e2e081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:51:25,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:51:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-12-14 08:51:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:51:25,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:25,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:25,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:51:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:25,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1961114242, now seen corresponding path program 1 times [2022-12-14 08:51:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:25,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847623133] [2022-12-14 08:51:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:51:25,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:51:25,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847623133] [2022-12-14 08:51:25,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847623133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:51:25,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:51:25,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:51:25,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449980511] [2022-12-14 08:51:25,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:51:25,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:51:25,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:51:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:51:25,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:51:25,702 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-12-14 08:51:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:51:25,727 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-12-14 08:51:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:51:25,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 7 [2022-12-14 08:51:25,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:51:25,735 INFO L225 Difference]: With dead ends: 26 [2022-12-14 08:51:25,735 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 08:51:25,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:51:25,740 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:51:25,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:51:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 08:51:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-14 08:51:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 9 states have internal predecessors, (9), 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) [2022-12-14 08:51:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-12-14 08:51:25,766 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-12-14 08:51:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:51:25,767 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-12-14 08:51:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-12-14 08:51:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-12-14 08:51:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:51:25,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:25,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:25,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:51:25,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:51:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash -895283913, now seen corresponding path program 1 times [2022-12-14 08:51:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:51:25,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300511226] [2022-12-14 08:51:25,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:25,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:51:25,799 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 08:51:25,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247342895] [2022-12-14 08:51:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:25,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:25,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:25,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:51:25,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:51:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:25,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:51:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:25,930 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:51:25,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:51:25,932 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-12-14 08:51:25,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-12-14 08:51:25,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:51:26,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:51:26,147 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 08:51:26,159 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:51:26,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:51:26 BoogieIcfgContainer [2022-12-14 08:51:26,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:51:26,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:51:26,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:51:26,246 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:51:26,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:25" (3/4) ... [2022-12-14 08:51:26,254 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:51:26,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:51:26,256 INFO L158 Benchmark]: Toolchain (without parser) took 2801.44ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 88.4MB in the beginning and 77.6MB in the end (delta: 10.8MB). Peak memory consumption was 36.4MB. Max. memory is 16.1GB. [2022-12-14 08:51:26,257 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory was 97.6MB in the beginning and 97.5MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:51:26,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1563.39ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 88.4MB in the beginning and 69.2MB in the end (delta: 19.2MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2022-12-14 08:51:26,260 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.52ms. Allocated memory is still 148.9MB. Free memory was 69.2MB in the beginning and 65.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 08:51:26,261 INFO L158 Benchmark]: Boogie Preprocessor took 16.95ms. Allocated memory is still 148.9MB. Free memory was 65.0MB in the beginning and 64.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:51:26,262 INFO L158 Benchmark]: RCFGBuilder took 328.11ms. Allocated memory is still 148.9MB. Free memory was 64.0MB in the beginning and 48.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 08:51:26,263 INFO L158 Benchmark]: TraceAbstraction took 826.93ms. Allocated memory is still 148.9MB. Free memory was 112.2MB in the beginning and 77.6MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-14 08:51:26,264 INFO L158 Benchmark]: Witness Printer took 9.39ms. Allocated memory is still 148.9MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:51:26,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory was 97.6MB in the beginning and 97.5MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1563.39ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 88.4MB in the beginning and 69.2MB in the end (delta: 19.2MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.52ms. Allocated memory is still 148.9MB. Free memory was 69.2MB in the beginning and 65.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.95ms. Allocated memory is still 148.9MB. Free memory was 65.0MB in the beginning and 64.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.11ms. Allocated memory is still 148.9MB. Free memory was 64.0MB in the beginning and 48.3MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 826.93ms. Allocated memory is still 148.9MB. Free memory was 112.2MB in the beginning and 77.6MB in the end (delta: 34.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 9.39ms. Allocated memory is still 148.9MB. Free memory is still 77.6MB. 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: 1853]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1842. 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); [L1861] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1861] RET printLine("Calling bad()...") VAL [\old(argc)=19, argc=19, argv={18:12}, argv={18:12}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1862] CALL CWE190_Integer_Overflow__int_fgets_square_02_bad() [L1834] int data; [L1835] 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] [L1839] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1840] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1842] data = atoi(inputBuffer) [L1839] char inputBuffer[(3 * sizeof(data) + 2)] = ""; VAL [data=268304386, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1853] data * data VAL [data=268304386, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1853]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 14 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2022-12-14 08:51:26,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53bad581b7b35373c4d80090e0a3e21e910c9a8bc5aac20882d7709aaf2b2638 --- 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-2329fc7 [2022-12-14 08:51:27,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:51:27,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:51:27,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:51:27,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:51:27,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:51:27,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:51:27,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:51:27,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:51:27,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:51:27,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:51:27,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:51:27,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:51:27,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:51:27,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:51:27,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:51:27,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:51:27,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:51:27,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:51:27,843 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:51:27,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:51:27,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:51:27,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:51:27,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:51:27,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:51:27,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:51:27,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:51:27,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:51:27,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:51:27,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:51:27,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:51:27,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:51:27,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:51:27,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:51:27,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:51:27,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:51:27,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:51:27,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:51:27,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:51:27,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:51:27,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:51:27,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-12-14 08:51:27,881 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:51:27,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:51:27,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:51:27,882 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:51:27,882 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:51:27,883 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:51:27,883 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:51:27,883 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:51:27,883 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:51:27,883 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:51:27,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:51:27,884 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:51:27,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:51:27,884 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 08:51:27,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:51:27,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:51:27,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:51:27,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:51:27,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:51:27,885 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:51:27,886 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 08:51:27,886 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:51:27,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:51:27,886 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:51:27,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:51:27,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:51:27,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:51:27,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:51:27,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:27,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:51:27,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:51:27,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:51:27,888 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:51:27,888 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:51:27,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:51:27,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:51:27,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:51:27,888 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53bad581b7b35373c4d80090e0a3e21e910c9a8bc5aac20882d7709aaf2b2638 [2022-12-14 08:51:28,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:51:28,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:51:28,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:51:28,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:51:28,161 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:51:28,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i [2022-12-14 08:51:30,776 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:51:31,067 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:51:31,067 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_square_02_bad.i [2022-12-14 08:51:31,089 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data/e587402a1/d55780a9bcbc49afbe17f482838172af/FLAGe31b96583 [2022-12-14 08:51:31,103 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/data/e587402a1/d55780a9bcbc49afbe17f482838172af [2022-12-14 08:51:31,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:51:31,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:51:31,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:31,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:51:31,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:51:31,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:31" (1/1) ... [2022-12-14 08:51:31,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175f6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:31, skipping insertion in model container [2022-12-14 08:51:31,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:51:31" (1/1) ... [2022-12-14 08:51:31,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:51:31,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:51:31,496 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:31,925 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:31,929 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:31,930 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:31,932 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:31,932 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:32,237 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:32,241 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:32,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:32,250 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:51:32,263 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-14 08:51:32,298 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:51:32,300 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:32,301 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-12-14 08:51:32,303 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:32,304 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-12-14 08:51:32,315 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-12-14 08:51:32,316 WARN L623 FunctionHandler]: Unknown extern function time [2022-12-14 08:51:32,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:51:32,659 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:51:32,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32 WrapperNode [2022-12-14 08:51:32,659 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:51:32,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:32,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:51:32,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:51:32,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,700 INFO L138 Inliner]: procedures = 943, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 52 [2022-12-14 08:51:32,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:51:32,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:51:32,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:51:32,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:51:32,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:51:32,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:51:32,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:51:32,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:51:32,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (1/1) ... [2022-12-14 08:51:32,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:51:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:51:32,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:51:32,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:51:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:51:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:51:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:51:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:51:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-12-14 08:51:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-12-14 08:51:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-12-14 08:51:32,777 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-12-14 08:51:32,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-12-14 08:51:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:51:32,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:51:32,912 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:51:32,914 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:51:35,012 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:51:35,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:51:35,016 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:51:35,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:35 BoogieIcfgContainer [2022-12-14 08:51:35,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:51:35,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:51:35,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:51:35,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:51:35,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:51:31" (1/3) ... [2022-12-14 08:51:35,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136f8744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:35, skipping insertion in model container [2022-12-14 08:51:35,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:51:32" (2/3) ... [2022-12-14 08:51:35,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136f8744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:51:35, skipping insertion in model container [2022-12-14 08:51:35,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:51:35" (3/3) ... [2022-12-14 08:51:35,023 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE190_Integer_Overflow__int_fgets_square_02_bad.i [2022-12-14 08:51:35,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:51:35,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 08:51:35,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:51:35,073 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=FINITE_AUTOMATA, 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;@5b16c344, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:51:35,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 08:51:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 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) [2022-12-14 08:51:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:51:35,081 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:35,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:35,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:51:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:35,085 INFO L85 PathProgramCache]: Analyzing trace with hash -500819106, now seen corresponding path program 1 times [2022-12-14 08:51:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:51:35,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765515538] [2022-12-14 08:51:35,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:35,098 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 [2022-12-14 08:51:35,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:51:35,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:51:35,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:51:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:51:35,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 08:51:35,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:51:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:51:35,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:51:35,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:51:35,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765515538] [2022-12-14 08:51:35,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765515538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:51:35,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:51:35,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:51:35,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550267635] [2022-12-14 08:51:35,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:51:35,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:51:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:51:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:51:35,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:51:35,266 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-14 08:51:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:51:35,279 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-12-14 08:51:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:51:35,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 10 [2022-12-14 08:51:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:51:35,284 INFO L225 Difference]: With dead ends: 38 [2022-12-14 08:51:35,284 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 08:51:35,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:51:35,290 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:51:35,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:51:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 08:51:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 08:51:35,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 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) [2022-12-14 08:51:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-14 08:51:35,313 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2022-12-14 08:51:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:51:35,314 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-14 08:51:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-14 08:51:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-14 08:51:35,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 08:51:35,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:51:35,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:51:35,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:51:35,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:51:35,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-12-14 08:51:35,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:51:35,521 INFO L85 PathProgramCache]: Analyzing trace with hash -251131453, now seen corresponding path program 1 times [2022-12-14 08:51:35,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:51:35,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821912147] [2022-12-14 08:51:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:51:35,528 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 [2022-12-14 08:51:35,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:51:35,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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) [2022-12-14 08:51:35,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c5bf8a-6a4d-4dbb-b8bf-2681779b38ed/bin/utaipan-gh47qXpMRh/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 [2022-12-14 08:51:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:51:35,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.