./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur --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 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 --- 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 23:41:46,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:41:46,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:41:46,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:41:46,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:41:46,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:41:46,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:41:46,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:41:46,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:41:46,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:41:46,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:41:46,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:41:46,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:41:46,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:41:46,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:41:46,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:41:46,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:41:46,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:41:46,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:41:46,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:41:46,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:41:46,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:41:46,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:41:46,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:41:46,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:41:46,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:41:46,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:41:46,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:41:46,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:41:46,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:41:46,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:41:46,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:41:46,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:41:46,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:41:46,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:41:46,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:41:46,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:41:46,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:41:46,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:41:46,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:41:46,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:41:46,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:41:46,133 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:41:46,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:41:46,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:41:46,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:41:46,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:41:46,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:41:46,135 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:41:46,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:41:46,136 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:41:46,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:41:46,137 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:41:46,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:41:46,137 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:41:46,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:41:46,138 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:41:46,138 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:41:46,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:41:46,138 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:41:46,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:41:46,140 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:41:46,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:41:46,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:41:46,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:41:46,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:41:46,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:41:46,141 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:41:46,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:41:46,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:41:46,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:41:46,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:41:46,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:41:46,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:46,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:41:46,143 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:41:46,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:41:46,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:41:46,144 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:41:46,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:41:46,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:41:46,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:41:46,145 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_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 [2022-11-25 23:41:46,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:41:46,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:41:46,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:41:46,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:41:46,487 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:41:46,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-11-25 23:41:49,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:41:50,149 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:41:50,149 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-11-25 23:41:50,171 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data/200c5800a/3128e0ee5b6e4daca1801a41665db5b4/FLAGd79338561 [2022-11-25 23:41:50,186 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data/200c5800a/3128e0ee5b6e4daca1801a41665db5b4 [2022-11-25 23:41:50,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:41:50,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:41:50,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:50,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:41:50,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:41:50,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:50" (1/1) ... [2022-11-25 23:41:50,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e646b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:50, skipping insertion in model container [2022-11-25 23:41:50,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:50" (1/1) ... [2022-11-25 23:41:50,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:41:50,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:41:50,750 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:41:51,286 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:41:51,294 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:51,298 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:51,308 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:51,310 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:51,332 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:41:51,349 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:41:51,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:41:51,361 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:41:51,383 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:41:51,430 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:41:51,431 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:51,432 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:41:51,435 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:51,436 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:41:51,440 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:41:51,442 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:41:51,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:41:51,573 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:41:51,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51 WrapperNode [2022-11-25 23:41:51,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:51,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:41:51,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:41:51,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:41:51,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,628 INFO L138 Inliner]: procedures = 500, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2022-11-25 23:41:51,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:41:51,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:41:51,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:41:51,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:41:51,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:41:51,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:41:51,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:41:51,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:41:51,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (1/1) ... [2022-11-25 23:41:51,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:51,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:51,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:41:51,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:41:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:41:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:41:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:41:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:41:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-25 23:41:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:41:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:41:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:41:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:41:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:41:51,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:41:51,954 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:41:51,956 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:41:52,153 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:41:52,228 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:41:52,228 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:41:52,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:52 BoogieIcfgContainer [2022-11-25 23:41:52,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:41:52,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:41:52,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:41:52,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:41:52,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:41:50" (1/3) ... [2022-11-25 23:41:52,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa7232f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:41:52, skipping insertion in model container [2022-11-25 23:41:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:51" (2/3) ... [2022-11-25 23:41:52,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa7232f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:41:52, skipping insertion in model container [2022-11-25 23:41:52,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:52" (3/3) ... [2022-11-25 23:41:52,240 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-11-25 23:41:52,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:41:52,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:41:52,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:41:52,338 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;@5020cbb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:41:52,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:41:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 23:41:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 23:41:52,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:52,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:52,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:41:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2022-11-25 23:41:52,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:52,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606618343] [2022-11-25 23:41:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:52,610 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 23:41:52,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:52,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606618343] [2022-11-25 23:41:52,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606618343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:41:52,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:41:52,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:41:52,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857215242] [2022-11-25 23:41:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:41:52,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:41:52,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:52,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:41:52,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:41:52,653 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 23:41:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:52,694 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-25 23:41:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:41:52,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 8 [2022-11-25 23:41:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:52,704 INFO L225 Difference]: With dead ends: 29 [2022-11-25 23:41:52,704 INFO L226 Difference]: Without dead ends: 14 [2022-11-25 23:41:52,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:41:52,714 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:52,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 14 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:41:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-25 23:41:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-25 23:41:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 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 23:41:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-25 23:41:52,755 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2022-11-25 23:41:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:52,756 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-25 23:41:52,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 23:41:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-25 23:41:52,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 23:41:52,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:52,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:41:52,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:41:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2022-11-25 23:41:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:52,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374818084] [2022-11-25 23:41:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:41:52,836 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:41:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:41:52,893 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 23:41:52,893 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:41:52,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:41:52,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:41:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:41:52,908 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:41:52,912 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:41:52,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:41:52 BoogieIcfgContainer [2022-11-25 23:41:52,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:41:52,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:41:52,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:41:52,961 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:41:52,962 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:52" (3/4) ... [2022-11-25 23:41:52,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:41:52,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:41:52,966 INFO L158 Benchmark]: Toolchain (without parser) took 2775.23ms. Allocated memory is still 184.5MB. Free memory was 135.4MB in the beginning and 89.0MB in the end (delta: 46.4MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2022-11-25 23:41:52,966 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:41:52,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1381.96ms. Allocated memory is still 184.5MB. Free memory was 135.4MB in the beginning and 139.4MB in the end (delta: -3.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2022-11-25 23:41:52,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.36ms. Allocated memory is still 184.5MB. Free memory was 139.4MB in the beginning and 136.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:41:52,977 INFO L158 Benchmark]: Boogie Preprocessor took 31.10ms. Allocated memory is still 184.5MB. Free memory was 136.3MB in the beginning and 135.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:41:52,978 INFO L158 Benchmark]: RCFGBuilder took 570.09ms. Allocated memory is still 184.5MB. Free memory was 135.2MB in the beginning and 120.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 23:41:52,978 INFO L158 Benchmark]: TraceAbstraction took 727.18ms. Allocated memory is still 184.5MB. Free memory was 119.6MB in the beginning and 89.0MB in the end (delta: 30.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-25 23:41:52,978 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 184.5MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:41:52,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 80.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1381.96ms. Allocated memory is still 184.5MB. Free memory was 135.4MB in the beginning and 139.4MB in the end (delta: -3.9MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.36ms. Allocated memory is still 184.5MB. Free memory was 139.4MB in the beginning and 136.3MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.10ms. Allocated memory is still 184.5MB. Free memory was 136.3MB in the beginning and 135.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 570.09ms. Allocated memory is still 184.5MB. Free memory was 135.2MB in the beginning and 120.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 727.18ms. Allocated memory is still 184.5MB. Free memory was 119.6MB in the beginning and 89.0MB in the end (delta: 30.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 184.5MB. Free memory is still 89.0MB. 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. 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); [L1578] 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) [L1578] RET printLine("Calling bad()...") VAL [\old(argc)=1073741825, argc=1073741825, argv={1073741828:1073741827}, argv={1073741828:1073741827}, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_14_bad() [L1550] int data; [L1551] 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] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] 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] [L1566] COND TRUE globalFive==5 [L1569] 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] - UnprovableResult [Line: 1569]: 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, 18 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 14 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 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 23:41:53,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur --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 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 --- 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 23:41:55,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:41:55,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:41:55,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:41:55,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:41:55,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:41:55,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:41:55,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:41:55,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:41:55,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:41:55,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:41:55,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:41:55,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:41:55,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:41:55,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:41:55,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:41:55,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:41:55,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:41:55,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:41:55,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:41:55,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:41:55,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:41:55,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:41:55,592 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:41:55,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:41:55,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:41:55,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:41:55,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:41:55,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:41:55,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:41:55,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:41:55,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:41:55,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:41:55,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:41:55,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:41:55,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:41:55,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:41:55,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:41:55,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:41:55,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:41:55,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:41:55,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2022-11-25 23:41:55,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:41:55,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:41:55,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:41:55,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:41:55,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:41:55,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:41:55,666 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:41:55,667 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:41:55,667 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:41:55,667 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:41:55,668 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:41:55,669 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:41:55,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:41:55,671 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:41:55,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:41:55,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:41:55,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:41:55,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:41:55,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 23:41:55,672 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 23:41:55,672 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:41:55,673 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 23:41:55,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:41:55,673 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:41:55,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:41:55,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:41:55,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 23:41:55,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:41:55,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:55,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:41:55,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:41:55,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:41:55,676 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 23:41:55,676 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 23:41:55,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:41:55,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:41:55,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 23:41:55,677 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_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156cc870dda331547ca89e59309b05cf08363cb4a8600f15a9d865791b5cc144 [2022-11-25 23:41:56,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:41:56,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:41:56,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:41:56,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:41:56,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:41:56,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-11-25 23:41:59,270 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:41:59,718 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:41:59,719 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-11-25 23:41:59,738 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data/caf2d8774/645a20707ad84bdbb5efb86a737a23f2/FLAG1a54de526 [2022-11-25 23:41:59,758 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/data/caf2d8774/645a20707ad84bdbb5efb86a737a23f2 [2022-11-25 23:41:59,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:41:59,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:41:59,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:59,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:41:59,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:41:59,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:59" (1/1) ... [2022-11-25 23:41:59,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b087a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:59, skipping insertion in model container [2022-11-25 23:41:59,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:59" (1/1) ... [2022-11-25 23:41:59,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:41:59,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:42:00,262 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:42:00,790 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:42:00,799 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:42:00,809 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:42:00,821 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:42:00,822 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:42:00,858 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:42:00,872 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:42:00,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:00,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:42:00,937 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 23:42:01,019 WARN L623 FunctionHandler]: Unknown extern function puts [2022-11-25 23:42:01,021 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:42:01,022 WARN L623 FunctionHandler]: Unknown extern function __ctype_b_loc [2022-11-25 23:42:01,025 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:42:01,025 WARN L623 FunctionHandler]: Unknown extern function iswxdigit [2022-11-25 23:42:01,031 WARN L623 FunctionHandler]: Unknown extern function fgets [2022-11-25 23:42:01,033 WARN L623 FunctionHandler]: Unknown extern function time [2022-11-25 23:42:01,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:42:01,198 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:42:01,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01 WrapperNode [2022-11-25 23:42:01,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:42:01,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:01,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:42:01,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:42:01,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,262 INFO L138 Inliner]: procedures = 505, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 55 [2022-11-25 23:42:01,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:42:01,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:42:01,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:42:01,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:42:01,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:42:01,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:42:01,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:42:01,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:42:01,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (1/1) ... [2022-11-25 23:42:01,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:42:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:01,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:42:01,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:42:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2022-11-25 23:42:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2022-11-25 23:42:01,438 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2022-11-25 23:42:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 23:42:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 23:42:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:42:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:42:01,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:42:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 23:42:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-25 23:42:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-25 23:42:01,646 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:42:01,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:42:01,905 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:42:01,912 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:42:01,913 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:42:01,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:01 BoogieIcfgContainer [2022-11-25 23:42:01,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:42:01,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:42:01,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:42:01,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:42:01,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:41:59" (1/3) ... [2022-11-25 23:42:01,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4a6e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:01, skipping insertion in model container [2022-11-25 23:42:01,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:42:01" (2/3) ... [2022-11-25 23:42:01,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4a6e5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:42:01, skipping insertion in model container [2022-11-25 23:42:01,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:01" (3/3) ... [2022-11-25 23:42:01,927 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_14_bad.i [2022-11-25 23:42:01,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:42:01,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:42:02,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:42:02,033 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;@25f6f76f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:42:02,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:42:02,038 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 23:42:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-25 23:42:02,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:02,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:02,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:42:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:02,057 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2022-11-25 23:42:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:42:02,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539193467] [2022-11-25 23:42:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:02,075 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 23:42:02,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:42:02,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:02,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:02,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:42:02,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:02,307 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 23:42:02,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:42:02,308 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 23:42:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539193467] [2022-11-25 23:42:02,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539193467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:02,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:02,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:42:02,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831314121] [2022-11-25 23:42:02,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:02,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:42:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 23:42:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:42:02,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:42:02,377 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 23:42:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:02,444 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-25 23:42:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:42:02,446 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 23:42:02,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:02,454 INFO L225 Difference]: With dead ends: 49 [2022-11-25 23:42:02,455 INFO L226 Difference]: Without dead ends: 15 [2022-11-25 23:42:02,459 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 23:42:02,465 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:02,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 55 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 23:42:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-25 23:42:02,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-25 23:42:02,507 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 23:42:02,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-25 23:42:02,511 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-25 23:42:02,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:02,512 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-25 23:42:02,513 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 23:42:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-25 23:42:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 23:42:02,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:02,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:02,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:02,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-25 23:42:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2022-11-25 23:42:02,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 23:42:02,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598207821] [2022-11-25 23:42:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:02,739 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 23:42:02,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 23:42:02,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:02,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:42:02,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 23:42:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 23:42:02,985 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-25 23:42:02,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 23:42:02,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-25 23:42:02,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-25 23:42:03,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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 23:42:03,194 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-25 23:42:03,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 23:42:03,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 11:42:03 BoogieIcfgContainer [2022-11-25 23:42:03,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 23:42:03,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 23:42:03,231 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 23:42:03,231 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 23:42:03,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:42:01" (3/4) ... [2022-11-25 23:42:03,234 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 23:42:03,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 23:42:03,235 INFO L158 Benchmark]: Toolchain (without parser) took 3473.12ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 42.9MB in the beginning and 54.0MB in the end (delta: -11.0MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-11-25 23:42:03,236 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:42:03,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1435.95ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 42.8MB in the beginning and 50.1MB in the end (delta: -7.3MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2022-11-25 23:42:03,237 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.62ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 47.2MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 23:42:03,237 INFO L158 Benchmark]: Boogie Preprocessor took 61.27ms. Allocated memory is still 90.2MB. Free memory was 46.7MB in the beginning and 45.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 23:42:03,238 INFO L158 Benchmark]: RCFGBuilder took 590.25ms. Allocated memory is still 90.2MB. Free memory was 44.7MB in the beginning and 58.1MB in the end (delta: -13.4MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-11-25 23:42:03,246 INFO L158 Benchmark]: TraceAbstraction took 1311.36ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 54.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-11-25 23:42:03,251 INFO L158 Benchmark]: Witness Printer took 4.02ms. Allocated memory is still 90.2MB. Free memory was 54.5MB in the beginning and 54.0MB in the end (delta: 551.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 23:42:03,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 69.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1435.95ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 42.8MB in the beginning and 50.1MB in the end (delta: -7.3MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.62ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 47.2MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.27ms. Allocated memory is still 90.2MB. Free memory was 46.7MB in the beginning and 45.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.25ms. Allocated memory is still 90.2MB. Free memory was 44.7MB in the beginning and 58.1MB in the end (delta: -13.4MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1311.36ms. Allocated memory is still 90.2MB. Free memory was 57.5MB in the beginning and 54.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Witness Printer took 4.02ms. Allocated memory is still 90.2MB. Free memory was 54.5MB in the beginning and 54.0MB in the end (delta: 551.8kB). 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: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1578] 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) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_postdec_14_bad() [L1550] int data; [L1551] 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] [L1552] COND TRUE globalFive==5 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1555] 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] [L1566] COND TRUE globalFive==5 [L1569] 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] - UnprovableResult [Line: 1569]: 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 32 mSDtfsCounter, 4 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 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 23:42:03,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3d5b957-d8d8-4f10-8379-c20c7a71b0eb/bin/utaipan-ByfvJB40ur/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