./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:40,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:40,141 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:02:40,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:40,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:40,227 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:40,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:40,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:40,229 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:40,229 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:40,230 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:40,230 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:40,251 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:40,252 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:02:40,252 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:40,253 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:40,253 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:02:40,254 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:02:40,254 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:40,255 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:02:40,256 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:02:40,257 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:02:40,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:40,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:40,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:02:40,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:40,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:40,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:40,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:40,261 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:02:40,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:40,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:40,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:40,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:40,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:40,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:40,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:40,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:40,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:40,266 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:02:40,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:02:40,267 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:40,267 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:40,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:40,268 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2023-11-19 05:02:40,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:40,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:40,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:40,592 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:40,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:40,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2023-11-19 05:02:43,810 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:44,292 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:44,296 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2023-11-19 05:02:44,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data/a3ae76d45/16a3af7b31bc41898a86a7b087ddf4be/FLAG368dd1ea4 [2023-11-19 05:02:44,349 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data/a3ae76d45/16a3af7b31bc41898a86a7b087ddf4be [2023-11-19 05:02:44,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:44,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:44,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:44,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:44,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:44,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:44" (1/1) ... [2023-11-19 05:02:44,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a1471f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:44, skipping insertion in model container [2023-11-19 05:02:44,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:44" (1/1) ... [2023-11-19 05:02:44,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:44,877 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:02:45,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:45,532 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:45,561 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:02:45,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:45,740 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:45,741 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:45,741 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:45,741 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:45,741 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:45,742 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:45,750 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:45,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45 WrapperNode [2023-11-19 05:02:45,750 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:45,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:45,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:45,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:45,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,817 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-19 05:02:45,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:45,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:45,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:45,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:45,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,849 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:45,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:45,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:45,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:45,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (1/1) ... [2023-11-19 05:02:45,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:45,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:45,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:45,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 05:02:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 05:02:45,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 05:02:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:02:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:02:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:02:46,135 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:46,137 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:46,286 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:46,335 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:46,335 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:02:46,340 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:46 BoogieIcfgContainer [2023-11-19 05:02:46,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:46,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:46,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:46,346 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:46,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:44" (1/3) ... [2023-11-19 05:02:46,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20aa970c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:46, skipping insertion in model container [2023-11-19 05:02:46,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:45" (2/3) ... [2023-11-19 05:02:46,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20aa970c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:46, skipping insertion in model container [2023-11-19 05:02:46,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:46" (3/3) ... [2023-11-19 05:02:46,349 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2023-11-19 05:02:46,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:46,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:02:46,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:46,427 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=LoopHeads, 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;@78b07e40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:46,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:02:46,431 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) [2023-11-19 05:02:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:02:46,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:46,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:46,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:02:46,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:46,447 INFO L85 PathProgramCache]: Analyzing trace with hash -970101220, now seen corresponding path program 1 times [2023-11-19 05:02:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:46,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539914398] [2023-11-19 05:02:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:46,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:46,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:02:46,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539914398] [2023-11-19 05:02:46,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539914398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:46,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:46,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:02:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054161224] [2023-11-19 05:02:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:46,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:02:46,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:46,823 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) [2023-11-19 05:02:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:46,872 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2023-11-19 05:02:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:46,875 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 [2023-11-19 05:02:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:46,881 INFO L225 Difference]: With dead ends: 29 [2023-11-19 05:02:46,882 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 05:02:46,884 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 [2023-11-19 05:02:46,888 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 [2023-11-19 05:02:46,889 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] [2023-11-19 05:02:46,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 05:02:46,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-19 05:02:46,923 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) [2023-11-19 05:02:46,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-19 05:02:46,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2023-11-19 05:02:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:46,926 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-19 05:02:46,927 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) [2023-11-19 05:02:46,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-19 05:02:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 05:02:46,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:46,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:46,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:02:46,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:02:46,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash -268937897, now seen corresponding path program 1 times [2023-11-19 05:02:46,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:02:46,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162093935] [2023-11-19 05:02:46,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:02:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:02:46,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:02:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:02:47,021 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:02:47,021 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:02:47,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:02:47,025 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:02:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:02:47,028 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:02:47,032 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:02:47,052 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated [2023-11-19 05:02:47,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:02:47 BoogieIcfgContainer [2023-11-19 05:02:47,061 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:02:47,062 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:02:47,062 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:02:47,063 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:02:47,063 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:46" (3/4) ... [2023-11-19 05:02:47,065 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:02:47,066 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:02:47,067 INFO L158 Benchmark]: Toolchain (without parser) took 2710.76ms. Allocated memory is still 186.6MB. Free memory was 153.2MB in the beginning and 113.5MB in the end (delta: 39.7MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2023-11-19 05:02:47,068 INFO L158 Benchmark]: CDTParser took 1.26ms. Allocated memory is still 125.8MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:47,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1392.55ms. Allocated memory is still 186.6MB. Free memory was 152.6MB in the beginning and 93.9MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2023-11-19 05:02:47,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.56ms. Allocated memory is still 186.6MB. Free memory was 93.9MB in the beginning and 90.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:47,070 INFO L158 Benchmark]: Boogie Preprocessor took 32.06ms. Allocated memory is still 186.6MB. Free memory was 90.9MB in the beginning and 89.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:47,070 INFO L158 Benchmark]: RCFGBuilder took 481.60ms. Allocated memory is still 186.6MB. Free memory was 89.1MB in the beginning and 145.0MB in the end (delta: -55.9MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:47,071 INFO L158 Benchmark]: TraceAbstraction took 718.87ms. Allocated memory is still 186.6MB. Free memory was 145.0MB in the beginning and 113.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-19 05:02:47,071 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 186.6MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:47,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26ms. Allocated memory is still 125.8MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1392.55ms. Allocated memory is still 186.6MB. Free memory was 152.6MB in the beginning and 93.9MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.56ms. Allocated memory is still 186.6MB. Free memory was 93.9MB in the beginning and 90.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.06ms. Allocated memory is still 186.6MB. Free memory was 90.9MB in the beginning and 89.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 481.60ms. Allocated memory is still 186.6MB. Free memory was 89.1MB in the beginning and 145.0MB in the end (delta: -55.9MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 718.87ms. Allocated memory is still 186.6MB. Free memory was 145.0MB in the beginning and 113.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 186.6MB. Free memory is still 113.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post100 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, \old(argc)=1073741827, argc=1073741827, argv={1073741829:1073741828}, argv={1073741829:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] EXPR data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555-L1565] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s 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 [2023-11-19 05:02:47,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:02:49,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:02:49,931 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-19 05:02:49,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:02:49,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:02:49,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:02:49,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:02:49,967 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:02:49,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:02:49,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:02:49,971 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:02:49,971 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:02:49,972 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:02:49,976 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:02:49,977 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:02:49,978 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:02:49,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:02:49,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:02:49,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:02:49,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:02:49,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:02:49,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:02:49,982 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:02:49,983 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:02:49,983 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:02:49,983 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:02:49,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:02:49,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:02:49,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:02:49,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:02:49,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:02:49,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:02:49,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:49,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:02:49,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:02:49,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:02:49,988 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:02:49,988 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:02:49,989 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:02:49,990 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:02:49,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:02:49,990 INFO L153 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_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7270500683e2ead7e91e9e1b5e35f11518180373347421b25a7e8850cfe82261 [2023-11-19 05:02:50,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:02:50,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:02:50,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:02:50,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:02:50,427 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:02:50,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2023-11-19 05:02:53,553 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:02:54,060 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:02:54,065 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2023-11-19 05:02:54,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data/e063c19ef/02b5a72cd6964395999820a523c30400/FLAG9e243698d [2023-11-19 05:02:54,117 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/data/e063c19ef/02b5a72cd6964395999820a523c30400 [2023-11-19 05:02:54,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:02:54,126 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:02:54,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:54,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:02:54,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:02:54,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:54" (1/1) ... [2023-11-19 05:02:54,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30020143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:54, skipping insertion in model container [2023-11-19 05:02:54,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:02:54" (1/1) ... [2023-11-19 05:02:54,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:02:54,714 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:02:55,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:55,320 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:02:55,348 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:02:55,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:02:55,587 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:55,588 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:55,588 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:55,588 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:55,588 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:55,589 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:02:55,597 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:02:55,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55 WrapperNode [2023-11-19 05:02:55,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:02:55,599 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:55,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:02:55,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:02:55,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,692 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-19 05:02:55,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:02:55,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:02:55,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:02:55,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:02:55,704 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,742 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:02:55,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:02:55,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:02:55,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:02:55,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (1/1) ... [2023-11-19 05:02:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:02:55,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:02:55,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:02:55,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:02:55,893 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 05:02:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 05:02:55,894 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 05:02:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:02:55,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:02:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:02:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:02:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:02:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:02:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 05:02:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-19 05:02:56,076 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:02:56,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:02:56,234 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:02:56,241 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:02:56,242 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:02:56,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:56 BoogieIcfgContainer [2023-11-19 05:02:56,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:02:56,248 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:02:56,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:02:56,252 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:02:56,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:02:54" (1/3) ... [2023-11-19 05:02:56,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5e4052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:56, skipping insertion in model container [2023-11-19 05:02:56,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:02:55" (2/3) ... [2023-11-19 05:02:56,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5e4052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:02:56, skipping insertion in model container [2023-11-19 05:02:56,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:56" (3/3) ... [2023-11-19 05:02:56,255 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_06_bad.i [2023-11-19 05:02:56,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:02:56,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 05:02:56,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:02:56,333 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=LoopHeads, 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;@2f1a5464, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:02:56,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 05:02:56,337 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) [2023-11-19 05:02:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:02:56,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:56,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:56,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:02:56,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash -152054014, now seen corresponding path program 1 times [2023-11-19 05:02:56,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:02:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511149197] [2023-11-19 05:02:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,369 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 [2023-11-19 05:02:56,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:02:56,372 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:02:56,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:02:56,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 05:02:56,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:02:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:02:56,596 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:02:56,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:02:56,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511149197] [2023-11-19 05:02:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511149197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:02:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:02:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:02:56,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616641992] [2023-11-19 05:02:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:02:56,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:02:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:02:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:02:56,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:02:56,652 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:02:56,701 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2023-11-19 05:02:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:02:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-19 05:02:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:02:56,714 INFO L225 Difference]: With dead ends: 39 [2023-11-19 05:02:56,714 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 05:02:56,717 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 [2023-11-19 05:02:56,722 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:02:56,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:02:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 05:02:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-19 05:02:56,766 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) [2023-11-19 05:02:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-19 05:02:56,770 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2023-11-19 05:02:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:02:56,772 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-19 05:02:56,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:02:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-19 05:02:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:02:56,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:02:56,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:02:56,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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)] Ended with exit code 0 [2023-11-19 05:02:56,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:56,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-19 05:02:56,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:02:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -104588099, now seen corresponding path program 1 times [2023-11-19 05:02:56,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:02:56,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225382341] [2023-11-19 05:02:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:02:56,985 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 [2023-11-19 05:02:56,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:02:56,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 05:02:57,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:02:57,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:02:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:02:57,222 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 05:02:57,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:02:57,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-19 05:02:57,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-19 05:02:57,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 05:02:57,430 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 05:02:57,433 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:02:57,456 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated [2023-11-19 05:02:57,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:02:57 BoogieIcfgContainer [2023-11-19 05:02:57,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:02:57,466 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:02:57,467 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:02:57,467 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:02:57,467 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:02:56" (3/4) ... [2023-11-19 05:02:57,469 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:02:57,470 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:02:57,471 INFO L158 Benchmark]: Toolchain (without parser) took 3344.63ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.2MB in the beginning and 56.8MB in the end (delta: -17.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2023-11-19 05:02:57,472 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 67.1MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 112.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:57,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1467.32ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.0MB in the beginning and 47.5MB in the end (delta: -8.5MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2023-11-19 05:02:57,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 93.76ms. Allocated memory is still 98.6MB. Free memory was 47.5MB in the beginning and 44.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:02:57,475 INFO L158 Benchmark]: Boogie Preprocessor took 83.39ms. Allocated memory is still 98.6MB. Free memory was 44.8MB in the beginning and 42.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:57,477 INFO L158 Benchmark]: RCFGBuilder took 468.01ms. Allocated memory is still 98.6MB. Free memory was 42.7MB in the beginning and 58.0MB in the end (delta: -15.3MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-19 05:02:57,477 INFO L158 Benchmark]: TraceAbstraction took 1217.95ms. Allocated memory is still 98.6MB. Free memory was 57.4MB in the beginning and 56.8MB in the end (delta: 599.8kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2023-11-19 05:02:57,481 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 98.6MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:02:57,485 INFO L338 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 67.1MB. Free memory was 42.9MB in the beginning and 42.8MB in the end (delta: 112.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1467.32ms. Allocated memory was 67.1MB in the beginning and 98.6MB in the end (delta: 31.5MB). Free memory was 39.0MB in the beginning and 47.5MB in the end (delta: -8.5MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 93.76ms. Allocated memory is still 98.6MB. Free memory was 47.5MB in the beginning and 44.8MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.39ms. Allocated memory is still 98.6MB. Free memory was 44.8MB in the beginning and 42.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 468.01ms. Allocated memory is still 98.6MB. Free memory was 42.7MB in the beginning and 58.0MB in the end (delta: -15.3MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1217.95ms. Allocated memory is still 98.6MB. Free memory was 57.4MB in the beginning and 56.8MB in the end (delta: 599.8kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 98.6MB. Free memory is still 56.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post98 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static const int STATIC_CONST_FIVE = 5; VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1579] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1579] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL CWE191_Integer_Underflow__int_fgets_postdec_06_bad() [L1551] int data; [L1552] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1553] COND TRUE STATIC_CONST_FIVE==5 [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] EXPR data = atoi(inputBuffer) [L1556] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555-L1565] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE STATIC_CONST_FIVE==5 [L1570] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, STATIC_CONST_FIVE=5, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 47 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 [2023-11-19 05:02:57,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46e23012-8dd1-4782-9530-f84ed34b8fe7/bin/utaipan-verify-t7M7D8N6sZ/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