./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:56:50,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:56:50,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-06 22:56:50,322 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:56:50,323 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:56:50,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:56:50,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:56:50,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:56:50,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:56:50,369 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:56:50,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:56:50,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:56:50,371 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:56:50,373 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:56:50,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:56:50,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:56:50,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:56:50,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:56:50,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:56:50,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:56:50,375 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:56:50,376 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:56:50,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:56:50,377 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:56:50,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:56:50,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:56:50,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:56:50,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:50,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:56:50,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:56:50,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:56:50,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:56:50,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:56:50,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:56:50,381 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:56:50,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:56:50,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:56:50,381 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:56:50,381 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_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 [2023-11-06 22:56:50,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:56:50,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:56:50,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:56:50,680 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:56:50,681 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:56:50,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-06 22:56:54,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:56:54,929 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:56:54,930 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-06 22:56:54,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data/27e24cc07/4250e7e67bc64b869c72fc31a0c79964/FLAGd701ae60c [2023-11-06 22:56:55,010 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data/27e24cc07/4250e7e67bc64b869c72fc31a0c79964 [2023-11-06 22:56:55,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:56:55,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:56:55,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:55,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:56:55,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:56:55,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:55" (1/1) ... [2023-11-06 22:56:55,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9c7fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:55, skipping insertion in model container [2023-11-06 22:56:55,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:56:55" (1/1) ... [2023-11-06 22:56:55,090 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:56:55,465 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:56:56,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:56,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:56:56,089 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:56:56,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:56:56,430 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:56,431 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:56,431 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:56,431 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:56,431 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:56,432 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:56:56,440 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:56:56,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56 WrapperNode [2023-11-06 22:56:56,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:56:56,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:56,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:56:56,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:56:56,450 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,541 INFO L138 Inliner]: procedures = 500, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-11-06 22:56:56,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:56:56,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:56:56,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:56:56,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:56:56,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:56:56,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:56:56,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:56:56,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:56:56,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (1/1) ... [2023-11-06 22:56:56,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:56:56,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:56:56,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:56:56,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:56:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-06 22:56:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-06 22:56:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-06 22:56:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:56:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 22:56:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:56:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:56:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:56:56,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:56:56,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:56:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 22:56:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:56:56,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:56:56,914 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:56:56,916 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:56:57,133 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:56:57,140 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:56:57,148 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:56:57,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:57 BoogieIcfgContainer [2023-11-06 22:56:57,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:56:57,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:56:57,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:56:57,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:56:57,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:56:55" (1/3) ... [2023-11-06 22:56:57,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b8c295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:57, skipping insertion in model container [2023-11-06 22:56:57,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:56:56" (2/3) ... [2023-11-06 22:56:57,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b8c295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:56:57, skipping insertion in model container [2023-11-06 22:56:57,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:57" (3/3) ... [2023-11-06 22:56:57,162 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-06 22:56:57,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:56:57,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:56:57,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:56:57,248 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2dfa294a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:56:57,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:56:57,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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) [2023-11-06 22:56:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:56:57,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:56:57,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:56:57,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 22:56:57,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:56:57,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2023-11-06 22:56:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:56:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514864450] [2023-11-06 22:56:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:56:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:56:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:56:57,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:56:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:56:57,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:56:57,555 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:56:57,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-06 22:56:57,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-06 22:56:57,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:56:57,565 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 22:56:57,571 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:56:57,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:56:57 BoogieIcfgContainer [2023-11-06 22:56:57,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:56:57,601 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:56:57,601 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:56:57,601 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:56:57,602 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:56:57" (3/4) ... [2023-11-06 22:56:57,604 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:56:57,606 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:56:57,607 INFO L158 Benchmark]: Toolchain (without parser) took 2592.61ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 76.5MB in the beginning and 78.4MB in the end (delta: -1.9MB). Peak memory consumption was 52.6MB. Max. memory is 16.1GB. [2023-11-06 22:56:57,608 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 127.9MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:56:57,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1424.92ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 76.2MB in the beginning and 117.4MB in the end (delta: -41.2MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2023-11-06 22:56:57,612 INFO L158 Benchmark]: Boogie Procedure Inliner took 99.98ms. Allocated memory is still 178.3MB. Free memory was 117.4MB in the beginning and 114.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:56:57,619 INFO L158 Benchmark]: Boogie Preprocessor took 52.29ms. Allocated memory is still 178.3MB. Free memory was 114.4MB in the beginning and 113.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:56:57,620 INFO L158 Benchmark]: RCFGBuilder took 555.67ms. Allocated memory is still 178.3MB. Free memory was 113.2MB in the beginning and 98.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:56:57,620 INFO L158 Benchmark]: TraceAbstraction took 446.43ms. Allocated memory is still 178.3MB. Free memory was 97.7MB in the beginning and 78.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:56:57,623 INFO L158 Benchmark]: Witness Printer took 5.18ms. Allocated memory is still 178.3MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:56:57,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 127.9MB. Free memory is still 98.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1424.92ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 76.2MB in the beginning and 117.4MB in the end (delta: -41.2MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 99.98ms. Allocated memory is still 178.3MB. Free memory was 117.4MB in the beginning and 114.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.29ms. Allocated memory is still 178.3MB. Free memory was 114.4MB in the beginning and 113.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 555.67ms. Allocated memory is still 178.3MB. Free memory was 113.2MB in the beginning and 98.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 446.43ms. Allocated memory is still 178.3MB. Free memory was 97.7MB in the beginning and 78.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.18ms. Allocated memory is still 178.3MB. Free memory is still 78.4MB. 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: 1572]: 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741831, argc=1073741831, argv={1073741829:1073741828}, argv={1073741829:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_sub_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [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] EXPR *dataPtr1 = data [L1554-L1568] { int data = *dataPtr1; { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } *dataPtr1 = data; } [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data={6:0}, dataPtr1={6:0}, dataPtr2={6:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=22occurred 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, 11 NumberOfCodeBlocks, 11 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 [2023-11-06 22:56:57,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:00,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:00,645 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-06 22:57:00,651 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:00,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:00,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-06 22:57:00,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:00,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:00,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:00,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:00,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:00,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:00,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:00,686 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:00,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:00,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:00,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:00,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:00,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:00,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:00,691 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:57:00,691 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:57:00,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:57:00,692 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:57:00,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:57:00,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:00,694 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:00,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:00,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:00,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:00,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:00,696 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:00,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:00,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:00,698 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:57:00,698 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:57:00,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:00,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:00,700 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:00,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:00,701 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:57:00,701 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:00,702 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_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c23a8a06a4d21c8f1b6b74885c3e110f23c69fd1fed76d4a4842ce33a495577 [2023-11-06 22:57:01,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:01,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:01,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:01,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:01,112 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:01,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-06 22:57:04,289 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:04,768 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:04,772 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-06 22:57:04,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data/233c1e65e/9494ccb98bd44678a57ac6a8da440473/FLAG3af276a7c [2023-11-06 22:57:04,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/data/233c1e65e/9494ccb98bd44678a57ac6a8da440473 [2023-11-06 22:57:04,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:04,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:04,844 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:04,844 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:04,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:04,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:04" (1/1) ... [2023-11-06 22:57:04,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1414cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:04, skipping insertion in model container [2023-11-06 22:57:04,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:04" (1/1) ... [2023-11-06 22:57:04,935 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:05,380 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:57:05,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:05,997 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:06,020 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 22:57:06,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:06,324 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:06,324 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:06,324 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:06,325 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:06,326 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:06,326 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:57:06,334 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:06,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06 WrapperNode [2023-11-06 22:57:06,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:06,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:06,338 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:06,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:06,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,414 INFO L138 Inliner]: procedures = 505, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-11-06 22:57:06,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:06,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:06,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:06,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:06,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,443 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,445 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:06,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:06,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:06,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:06,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (1/1) ... [2023-11-06 22:57:06,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:06,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:06,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-06 22:57:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-06 22:57:06,539 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-06 22:57:06,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:57:06,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:57:06,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:06,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:06,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:06,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:57:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:57:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:57:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 22:57:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-06 22:57:06,711 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:06,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:06,960 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:06,966 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:06,967 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:57:06,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:06 BoogieIcfgContainer [2023-11-06 22:57:06,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:06,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:06,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:06,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:06,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:04" (1/3) ... [2023-11-06 22:57:06,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7835fcc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:06, skipping insertion in model container [2023-11-06 22:57:06,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:06" (2/3) ... [2023-11-06 22:57:06,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7835fcc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:06, skipping insertion in model container [2023-11-06 22:57:06,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:06" (3/3) ... [2023-11-06 22:57:06,983 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_32_bad.i [2023-11-06 22:57:07,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:07,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:57:07,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:07,074 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ce21eea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:07,075 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:57:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 18 states have internal predecessors, (19), 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) [2023-11-06 22:57:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:57:07,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:07,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:07,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 22:57:07,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1755060030, now seen corresponding path program 1 times [2023-11-06 22:57:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:57:07,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981148756] [2023-11-06 22:57:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:07,120 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 [2023-11-06 22:57:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:57:07,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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) [2023-11-06 22:57:07,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:57:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:07,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:57:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:07,525 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 22:57:07,527 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:57:07,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-06 22:57:07,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-06 22:57:07,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:57:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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 [2023-11-06 22:57:07,737 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-06 22:57:07,746 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:57:07,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:57:07 BoogieIcfgContainer [2023-11-06 22:57:07,793 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:57:07,796 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:57:07,796 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:57:07,796 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:57:07,797 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:06" (3/4) ... [2023-11-06 22:57:07,799 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:57:07,800 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:57:07,802 INFO L158 Benchmark]: Toolchain (without parser) took 2961.37ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 52.1MB in the beginning and 53.5MB in the end (delta: -1.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-06 22:57:07,803 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory was 56.0MB in the beginning and 55.8MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:57:07,804 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1492.46ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 51.9MB in the beginning and 62.7MB in the end (delta: -10.9MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-11-06 22:57:07,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.19ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 59.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:57:07,810 INFO L158 Benchmark]: Boogie Preprocessor took 51.06ms. Allocated memory is still 117.4MB. Free memory was 59.6MB in the beginning and 89.8MB in the end (delta: -30.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-11-06 22:57:07,812 INFO L158 Benchmark]: RCFGBuilder took 503.02ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 73.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:57:07,813 INFO L158 Benchmark]: TraceAbstraction took 820.28ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 53.5MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:57:07,814 INFO L158 Benchmark]: Witness Printer took 4.57ms. Allocated memory is still 117.4MB. Free memory is still 53.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:57:07,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory was 56.0MB in the beginning and 55.8MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1492.46ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 51.9MB in the beginning and 62.7MB in the end (delta: -10.9MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.19ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 59.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.06ms. Allocated memory is still 117.4MB. Free memory was 59.6MB in the beginning and 89.8MB in the end (delta: -30.2MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * RCFGBuilder took 503.02ms. Allocated memory is still 117.4MB. Free memory was 89.8MB in the beginning and 73.8MB in the end (delta: 16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 820.28ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 53.5MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.57ms. Allocated memory is still 117.4MB. Free memory is still 53.5MB. 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: 1572]: 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); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1580] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1580] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_sub_32_bad() [L1550] int data; [L1551] int *dataPtr1 = &data; [L1552] int *dataPtr2 = &data; [L1553] data = 0 [L1555] EXPR \read(*dataPtr1) [L1555] int data = *dataPtr1; [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] EXPR *dataPtr1 = data [L1554-L1568] { int data = *dataPtr1; { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } *dataPtr1 = data; } [L1570] EXPR \read(*dataPtr2) [L1570] int data = *dataPtr2; [L1572] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, data={-9223372036854775805:0}, dataPtr1={-9223372036854775805:0}, dataPtr2={-9223372036854775805:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1572]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, 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=22occurred 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, 11 NumberOfCodeBlocks, 11 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 [2023-11-06 22:57:07,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17a46721-e721-4356-b3ce-4d2a0605e320/bin/uautomizer-verify-WvqO1wxjHP/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