./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:10:28,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:10:28,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-21 22:10:28,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:10:28,587 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:10:28,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:10:28,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:10:28,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:10:28,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:10:28,637 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:10:28,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:10:28,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:10:28,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:10:28,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:10:28,642 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:10:28,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:10:28,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:10:28,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:10:28,643 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:10:28,644 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:10:28,644 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:10:28,645 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:10:28,645 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:10:28,646 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:10:28,646 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:10:28,646 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:10:28,647 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:10:28,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:10:28,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:10:28,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:10:28,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:28,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:10:28,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:10:28,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:10:28,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:10:28,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:10:28,652 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:10:28,652 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:10:28,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:10:28,652 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:10:28,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:10:28,653 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 [2023-11-21 22:10:28,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:10:28,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:10:28,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:10:28,956 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:10:28,956 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:10:28,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2023-11-21 22:10:32,232 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:10:32,675 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:10:32,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2023-11-21 22:10:32,710 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data/b6b549064/1577f7466b064ca4ab6394b6141648bf/FLAG0b04f3408 [2023-11-21 22:10:32,729 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data/b6b549064/1577f7466b064ca4ab6394b6141648bf [2023-11-21 22:10:32,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:10:32,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:10:32,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:32,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:10:32,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:10:32,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:32" (1/1) ... [2023-11-21 22:10:32,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2903af5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:32, skipping insertion in model container [2023-11-21 22:10:32,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:32" (1/1) ... [2023-11-21 22:10:32,843 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:10:33,217 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:10:33,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:33,839 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:10:33,871 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:10:33,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:34,123 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:34,124 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:34,124 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:34,124 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:34,124 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:34,125 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:34,132 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:10:34,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34 WrapperNode [2023-11-21 22:10:34,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:34,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:34,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:10:34,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:10:34,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,195 INFO L138 Inliner]: procedures = 501, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-21 22:10:34,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:34,197 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:10:34,197 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:10:34,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:10:34,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,213 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,225 INFO L187 HeapSplitter]: Split 3 memory accesses to 3 slices as follows [1, 1, 1] [2023-11-21 22:10:34,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:10:34,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:10:34,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:10:34,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:10:34,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (1/1) ... [2023-11-21 22:10:34,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:34,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:34,292 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:10:34,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:10:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 22:10:34,326 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 22:10:34,327 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 22:10:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:10:34,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-21 22:10:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-21 22:10:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-21 22:10:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:10:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:10:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:10:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:10:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 22:10:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:10:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:10:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:10:34,489 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:10:34,491 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:10:34,622 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:10:34,667 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:10:34,667 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:10:34,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:34 BoogieIcfgContainer [2023-11-21 22:10:34,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:10:34,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:10:34,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:10:34,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:10:34,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:10:32" (1/3) ... [2023-11-21 22:10:34,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe1bb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:34, skipping insertion in model container [2023-11-21 22:10:34,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:34" (2/3) ... [2023-11-21 22:10:34,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe1bb89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:34, skipping insertion in model container [2023-11-21 22:10:34,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:34" (3/3) ... [2023-11-21 22:10:34,679 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2023-11-21 22:10:34,701 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:10:34,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:10:34,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:10:34,751 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@2ce99f84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:10:34,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 22:10:34,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2023-11-21 22:10:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:10:34,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:34,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:10:34,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:10:34,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -824659567, now seen corresponding path program 1 times [2023-11-21 22:10:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:10:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334990215] [2023-11-21 22:10:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:34,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:10:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:10:34,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:10:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:10:35,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:10:35,085 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:10:35,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 22:10:35,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 22:10:35,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:10:35,097 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:10:35,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:10:35,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:10:35 BoogieIcfgContainer [2023-11-21 22:10:35,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:10:35,140 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:10:35,140 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:10:35,140 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:10:35,141 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:34" (3/4) ... [2023-11-21 22:10:35,143 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:10:35,144 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:10:35,146 INFO L158 Benchmark]: Toolchain (without parser) took 2407.88ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 118.5MB in the beginning and 177.2MB in the end (delta: -58.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:10:35,146 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:10:35,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1391.54ms. Allocated memory is still 167.8MB. Free memory was 118.1MB in the beginning and 104.9MB in the end (delta: 13.2MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2023-11-21 22:10:35,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.55ms. Allocated memory is still 167.8MB. Free memory was 104.9MB in the beginning and 102.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:10:35,149 INFO L158 Benchmark]: Boogie Preprocessor took 46.64ms. Allocated memory is still 167.8MB. Free memory was 102.2MB in the beginning and 100.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:10:35,149 INFO L158 Benchmark]: RCFGBuilder took 425.44ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 84.7MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:10:35,150 INFO L158 Benchmark]: TraceAbstraction took 467.22ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 84.1MB in the beginning and 177.2MB in the end (delta: -93.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:10:35,150 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 211.8MB. Free memory is still 177.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:10:35,154 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 62.3MB in the beginning and 62.2MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1391.54ms. Allocated memory is still 167.8MB. Free memory was 118.1MB in the beginning and 104.9MB in the end (delta: 13.2MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.55ms. Allocated memory is still 167.8MB. Free memory was 104.9MB in the beginning and 102.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.64ms. Allocated memory is still 167.8MB. Free memory was 102.2MB in the beginning and 100.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.44ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 84.7MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 467.22ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 84.1MB in the beginning and 177.2MB in the end (delta: -93.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 211.8MB. Free memory is still 177.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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); [L1549] int CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData; [L1550] int CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData; [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1573] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741825, argc=1073741825, argv={1073741828:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_predec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] CWE191_Integer_Underflow__int_fgets_predec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_predec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_predec_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1585] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-11-21 22:10:35,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:10:37,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:10:37,998 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-21 22:10:38,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:10:38,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:10:38,009 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-21 22:10:38,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:10:38,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:10:38,074 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:10:38,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:10:38,080 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:10:38,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:10:38,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:10:38,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:10:38,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:10:38,084 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:10:38,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:10:38,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:10:38,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:10:38,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:10:38,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:10:38,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:10:38,088 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:10:38,089 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:10:38,089 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:10:38,090 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:10:38,090 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:10:38,091 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:10:38,091 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:10:38,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:10:38,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:10:38,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:10:38,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:10:38,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:38,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:10:38,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:10:38,097 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:10:38,097 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:10:38,097 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:10:38,098 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:10:38,098 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:10:38,098 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:10:38,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:10:38,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:10:38,100 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:10:38,100 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0e24365d330bfa255dc5c5f7cb6de53905c5e38bbe4a352cd516bdf8cd8a915 [2023-11-21 22:10:38,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:10:38,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:10:38,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:10:38,554 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:10:38,554 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:10:38,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2023-11-21 22:10:41,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:10:42,255 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:10:42,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2023-11-21 22:10:42,282 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data/1f918db26/0fdd1fe9b1814b2db52c9d69226efa36/FLAGa9042a6ce [2023-11-21 22:10:42,298 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/data/1f918db26/0fdd1fe9b1814b2db52c9d69226efa36 [2023-11-21 22:10:42,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:10:42,302 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:10:42,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:42,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:10:42,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:10:42,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:42" (1/1) ... [2023-11-21 22:10:42,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371466f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:42, skipping insertion in model container [2023-11-21 22:10:42,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:10:42" (1/1) ... [2023-11-21 22:10:42,390 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:10:42,828 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:10:43,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:43,758 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:10:43,779 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:10:43,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:10:44,036 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:44,036 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:44,037 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:44,037 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:44,037 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:44,037 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:10:44,046 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:10:44,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44 WrapperNode [2023-11-21 22:10:44,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:10:44,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:44,048 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:10:44,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:10:44,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,116 INFO L138 Inliner]: procedures = 506, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2023-11-21 22:10:44,116 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:10:44,117 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:10:44,117 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:10:44,117 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:10:44,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,134 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,149 INFO L187 HeapSplitter]: Split 3 memory accesses to 3 slices as follows [1, 1, 1] [2023-11-21 22:10:44,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,179 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,190 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:10:44,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:10:44,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:10:44,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:10:44,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (1/1) ... [2023-11-21 22:10:44,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:10:44,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:10:44,267 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:10:44,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:10:44,319 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-21 22:10:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-21 22:10:44,320 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-21 22:10:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:10:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 22:10:44,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-21 22:10:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-21 22:10:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:10:44,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:10:44,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-21 22:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-21 22:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-21 22:10:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-21 22:10:44,510 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:10:44,512 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:10:44,734 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:10:44,812 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:10:44,812 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:10:44,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:44 BoogieIcfgContainer [2023-11-21 22:10:44,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:10:44,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:10:44,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:10:44,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:10:44,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:10:42" (1/3) ... [2023-11-21 22:10:44,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e87cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:44, skipping insertion in model container [2023-11-21 22:10:44,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:10:44" (2/3) ... [2023-11-21 22:10:44,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77e87cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:10:44, skipping insertion in model container [2023-11-21 22:10:44,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:44" (3/3) ... [2023-11-21 22:10:44,825 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_predec_68_bad.i [2023-11-21 22:10:44,846 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:10:44,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 22:10:44,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:10:44,915 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@21af9fbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:10:44,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 22:10:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 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) [2023-11-21 22:10:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:10:44,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:10:44,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:10:44,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-21 22:10:44,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:10:44,951 INFO L85 PathProgramCache]: Analyzing trace with hash -824659567, now seen corresponding path program 1 times [2023-11-21 22:10:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:10:44,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885178948] [2023-11-21 22:10:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:10:44,972 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 [2023-11-21 22:10:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:10:44,977 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:10:45,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:10:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:10:45,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:10:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:10:45,249 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-21 22:10:45,251 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:10:45,252 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-21 22:10:45,254 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-21 22:10:45,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:10:45,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:10:45,469 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:10:45,474 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:10:45,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:10:45 BoogieIcfgContainer [2023-11-21 22:10:45,507 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:10:45,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:10:45,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:10:45,511 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:10:45,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:10:44" (3/4) ... [2023-11-21 22:10:45,514 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:10:45,515 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:10:45,517 INFO L158 Benchmark]: Toolchain (without parser) took 3214.09ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 59.2MB in the end (delta: 33.9MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2023-11-21 22:10:45,518 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:10:45,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1743.38ms. Allocated memory is still 121.6MB. Free memory was 92.9MB in the beginning and 52.5MB in the end (delta: 40.3MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2023-11-21 22:10:45,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.47ms. Allocated memory is still 121.6MB. Free memory was 52.5MB in the beginning and 49.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:10:45,526 INFO L158 Benchmark]: Boogie Preprocessor took 73.50ms. Allocated memory is still 121.6MB. Free memory was 49.0MB in the beginning and 46.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:10:45,528 INFO L158 Benchmark]: RCFGBuilder took 623.58ms. Allocated memory is still 121.6MB. Free memory was 46.3MB in the beginning and 77.3MB in the end (delta: -31.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-11-21 22:10:45,529 INFO L158 Benchmark]: TraceAbstraction took 690.31ms. Allocated memory is still 121.6MB. Free memory was 76.6MB in the beginning and 59.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-21 22:10:45,530 INFO L158 Benchmark]: Witness Printer took 5.24ms. Allocated memory is still 121.6MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:10:45,539 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 67.1MB. Free memory was 43.2MB in the beginning and 43.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1743.38ms. Allocated memory is still 121.6MB. Free memory was 92.9MB in the beginning and 52.5MB in the end (delta: 40.3MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.47ms. Allocated memory is still 121.6MB. Free memory was 52.5MB in the beginning and 49.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.50ms. Allocated memory is still 121.6MB. Free memory was 49.0MB in the beginning and 46.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.58ms. Allocated memory is still 121.6MB. Free memory was 46.3MB in the beginning and 77.3MB in the end (delta: -31.1MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * TraceAbstraction took 690.31ms. Allocated memory is still 121.6MB. Free memory was 76.6MB in the beginning and 59.2MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.24ms. Allocated memory is still 121.6MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1585]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1560. 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] int CWE191_Integer_Underflow__int_fgets_predec_68_badData; [L1549] int CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData; [L1550] int CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData; [L1573] CALL printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1573] RET printLine("Calling bad()...") VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1574] CALL CWE191_Integer_Underflow__int_fgets_predec_68_bad() [L1554] int data; [L1555] data = 0 [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1560] EXPR data = atoi(inputBuffer) [L1557] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556-L1566] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1567] CWE191_Integer_Underflow__int_fgets_predec_68_badData = data [L1568] CALL CWE191_Integer_Underflow__int_fgets_predec_68b_badSink() [L1583] int data = CWE191_Integer_Underflow__int_fgets_predec_68_badData; VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1585] --data VAL [CWE191_Integer_Underflow__int_fgets_predec_68_badData=-2147483648, CWE191_Integer_Underflow__int_fgets_predec_68_goodB2GData=0, CWE191_Integer_Underflow__int_fgets_predec_68_goodG2BData=0, GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1585]: 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, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-11-21 22:10:45,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c9a891-9891-40bc-997c-65ff52b411a0/bin/uautomizer-verify-bycVGegfSx/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