./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:56:14,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:56:14,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-06 21:56:14,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:56:14,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:56:14,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:56:14,418 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:56:14,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:56:14,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:56:14,420 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:56:14,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:56:14,421 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:56:14,422 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:56:14,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:56:14,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:56:14,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:56:14,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:56:14,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:56:14,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:56:14,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:56:14,426 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:56:14,427 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:56:14,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:56:14,428 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:56:14,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:56:14,429 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:56:14,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:56:14,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:14,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:56:14,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:56:14,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:56:14,432 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:56:14,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:56:14,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:56:14,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:56:14,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:56:14,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:56:14,434 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:56:14,435 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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 [2023-11-06 21:56:14,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:56:14,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:56:14,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:56:14,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:56:14,763 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:56:14,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2023-11-06 21:56:17,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:56:18,422 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:56:18,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2023-11-06 21:56:18,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data/60887c0be/68eb0c680da94a91b2d1a71d775817cc/FLAGb6092813d [2023-11-06 21:56:18,474 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data/60887c0be/68eb0c680da94a91b2d1a71d775817cc [2023-11-06 21:56:18,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:56:18,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:56:18,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:18,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:56:18,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:56:18,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:18" (1/1) ... [2023-11-06 21:56:18,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca939b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:18, skipping insertion in model container [2023-11-06 21:56:18,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:18" (1/1) ... [2023-11-06 21:56:18,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:56:18,972 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:56:19,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:19,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:56:19,586 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:56:19,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:19,880 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:19,880 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:19,880 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:19,881 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:19,881 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:19,881 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:19,888 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:56:19,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19 WrapperNode [2023-11-06 21:56:19,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:19,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:19,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:56:19,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:56:19,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:19,970 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,009 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-11-06 21:56:20,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:20,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:56:20,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:56:20,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:56:20,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,070 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:56:20,082 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:56:20,082 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:56:20,082 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:56:20,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (1/1) ... [2023-11-06 21:56:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:20,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:20,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:56:20,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:56:20,162 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-06 21:56:20,163 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-06 21:56:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-06 21:56:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:56:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 21:56:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:56:20,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:56:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:56:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:56:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 21:56:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:56:20,333 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:56:20,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:56:20,464 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:56:20,471 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:56:20,471 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:56:20,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:20 BoogieIcfgContainer [2023-11-06 21:56:20,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:56:20,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:56:20,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:56:20,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:56:20,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:18" (1/3) ... [2023-11-06 21:56:20,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63309f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:20, skipping insertion in model container [2023-11-06 21:56:20,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:19" (2/3) ... [2023-11-06 21:56:20,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63309f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:20, skipping insertion in model container [2023-11-06 21:56:20,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:20" (3/3) ... [2023-11-06 21:56:20,485 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2023-11-06 21:56:20,505 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:56:20,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 21:56:20,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:56:20,564 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;@71c936fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:56:20,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:56:20,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 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 21:56:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 21:56:20,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:20,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:20,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 21:56:20,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:20,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1450936690, now seen corresponding path program 1 times [2023-11-06 21:56:20,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:20,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221824634] [2023-11-06 21:56:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:20,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:56:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:20,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221824634] [2023-11-06 21:56:20,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221824634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:20,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:20,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:56:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559860323] [2023-11-06 21:56:20,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:20,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:56:20,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:56:21,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:56:21,020 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:56:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:21,045 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-11-06 21:56:21,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:56:21,047 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 21:56:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:21,055 INFO L225 Difference]: With dead ends: 40 [2023-11-06 21:56:21,056 INFO L226 Difference]: Without dead ends: 17 [2023-11-06 21:56:21,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:56:21,064 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:21,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:56:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-06 21:56:21,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-06 21:56:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:56:21,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-06 21:56:21,106 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2023-11-06 21:56:21,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:21,108 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-06 21:56:21,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:56:21,109 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-11-06 21:56:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:56:21,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:21,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:21,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:56:21,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 21:56:21,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1512851975, now seen corresponding path program 1 times [2023-11-06 21:56:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:21,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494327385] [2023-11-06 21:56:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:56:21,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:56:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:56:21,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:56:21,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:56:21,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-06 21:56:21,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-06 21:56:21,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:56:21,245 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 21:56:21,249 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:56:21,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:56:21 BoogieIcfgContainer [2023-11-06 21:56:21,277 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:56:21,278 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:56:21,278 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:56:21,278 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:56:21,279 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:20" (3/4) ... [2023-11-06 21:56:21,281 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:56:21,283 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:56:21,284 INFO L158 Benchmark]: Toolchain (without parser) took 2805.35ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 123.3MB in the beginning and 156.2MB in the end (delta: -32.9MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-11-06 21:56:21,284 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 161.5MB. Free memory is still 132.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:56:21,285 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1410.52ms. Allocated memory is still 161.5MB. Free memory was 123.3MB in the beginning and 125.1MB in the end (delta: -1.8MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2023-11-06 21:56:21,286 INFO L158 Benchmark]: Boogie Procedure Inliner took 119.63ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 125.0MB in the beginning and 202.3MB in the end (delta: -77.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-11-06 21:56:21,287 INFO L158 Benchmark]: Boogie Preprocessor took 69.97ms. Allocated memory is still 234.9MB. Free memory was 202.3MB in the beginning and 200.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:56:21,287 INFO L158 Benchmark]: RCFGBuilder took 392.02ms. Allocated memory is still 234.9MB. Free memory was 200.2MB in the beginning and 186.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 21:56:21,288 INFO L158 Benchmark]: TraceAbstraction took 800.79ms. Allocated memory is still 234.9MB. Free memory was 186.6MB in the beginning and 156.2MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-06 21:56:21,288 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 234.9MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:56:21,292 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 161.5MB. Free memory is still 132.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1410.52ms. Allocated memory is still 161.5MB. Free memory was 123.3MB in the beginning and 125.1MB in the end (delta: -1.8MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 119.63ms. Allocated memory was 161.5MB in the beginning and 234.9MB in the end (delta: 73.4MB). Free memory was 125.0MB in the beginning and 202.3MB in the end (delta: -77.3MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.97ms. Allocated memory is still 234.9MB. Free memory was 202.3MB in the beginning and 200.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 392.02ms. Allocated memory is still 234.9MB. Free memory was 200.2MB in the beginning and 186.6MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 800.79ms. Allocated memory is still 234.9MB. Free memory was 186.6MB in the beginning and 156.2MB in the end (delta: 30.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 234.9MB. Free memory is still 156.2MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [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)=1073741830, argc=1073741830, argv={1073741827:1073741831}, argv={1073741827:1073741831}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1581] CALL CWE191_Integer_Underflow__int_fgets_postdec_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE 1 [L1570] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data--=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 27 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 27 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 21:56:21,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:56:24,004 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:56:24,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-06 21:56:24,161 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:56:24,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:56:24,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-06 21:56:24,208 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:56:24,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:56:24,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:56:24,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:56:24,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:56:24,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:56:24,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:56:24,215 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:56:24,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:56:24,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:56:24,217 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:56:24,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:56:24,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:56:24,218 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:56:24,219 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:56:24,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:56:24,220 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 21:56:24,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:56:24,221 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:56:24,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:56:24,222 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:56:24,223 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:56:24,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:56:24,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:56:24,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:24,226 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:56:24,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:56:24,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:56:24,227 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:56:24,227 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:56:24,227 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:56:24,228 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:56:24,228 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:56:24,229 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:56:24,229 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:56:24,230 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:56:24,230 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_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6df2b9983abdfcbde7954e56f61fb05c0f4cb00301603c6872ea03705ff67ac5 [2023-11-06 21:56:24,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:56:24,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:56:24,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:56:24,717 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:56:24,718 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:56:24,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2023-11-06 21:56:27,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:56:28,341 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:56:28,342 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2023-11-06 21:56:28,379 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data/97740cb04/093ea942a90f42d58ed446a0284e872e/FLAG6613a6f00 [2023-11-06 21:56:28,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/data/97740cb04/093ea942a90f42d58ed446a0284e872e [2023-11-06 21:56:28,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:56:28,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:56:28,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:28,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:56:28,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:56:28,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:28" (1/1) ... [2023-11-06 21:56:28,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc49c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:28, skipping insertion in model container [2023-11-06 21:56:28,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:28" (1/1) ... [2023-11-06 21:56:28,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:56:28,908 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:56:29,770 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:29,791 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:56:29,826 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:56:29,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:30,121 WARN L672 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:30,121 WARN L672 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:30,121 WARN L672 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:30,122 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:30,122 WARN L672 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:30,123 WARN L672 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:30,131 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:56:30,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30 WrapperNode [2023-11-06 21:56:30,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:30,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:30,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:56:30,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:56:30,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,236 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2023-11-06 21:56:30,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:30,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:56:30,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:56:30,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:56:30,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,283 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:56:30,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:56:30,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:56:30,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:56:30,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (1/1) ... [2023-11-06 21:56:30,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:30,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:30,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:56:30,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:56:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-06 21:56:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-06 21:56:30,396 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-06 21:56:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:56:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:56:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:56:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:56:30,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:56:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:56:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-06 21:56:30,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-06 21:56:30,575 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:56:30,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:56:30,838 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:56:30,845 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:56:30,845 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 21:56:30,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:30 BoogieIcfgContainer [2023-11-06 21:56:30,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:56:30,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:56:30,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:56:30,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:56:30,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:28" (1/3) ... [2023-11-06 21:56:30,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7793d22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:30, skipping insertion in model container [2023-11-06 21:56:30,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:30" (2/3) ... [2023-11-06 21:56:30,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7793d22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:30, skipping insertion in model container [2023-11-06 21:56:30,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:30" (3/3) ... [2023-11-06 21:56:30,858 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_postdec_16_bad.i [2023-11-06 21:56:30,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:56:30,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 21:56:30,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:56:30,946 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;@7014ac84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:56:30,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 21:56:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 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 21:56:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 21:56:30,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:30,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:30,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 21:56:30,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1450936690, now seen corresponding path program 1 times [2023-11-06 21:56:30,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:30,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313460489] [2023-11-06 21:56:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:30,995 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 21:56:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:31,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 21:56:31,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 21:56:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:31,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:56:31,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:56:31,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:56:31,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313460489] [2023-11-06 21:56:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313460489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:31,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:31,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:56:31,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485025155] [2023-11-06 21:56:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:31,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:56:31,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:56:31,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:56:31,295 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:56:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:31,321 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-06 21:56:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:56:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-11-06 21:56:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:31,335 INFO L225 Difference]: With dead ends: 39 [2023-11-06 21:56:31,335 INFO L226 Difference]: Without dead ends: 15 [2023-11-06 21:56:31,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:56:31,346 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:31,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:56:31,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-06 21:56:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-06 21:56:31,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:56:31,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-11-06 21:56:31,389 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2023-11-06 21:56:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:31,393 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-11-06 21:56:31,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 21:56:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-11-06 21:56:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 21:56:31,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:31,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:31,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 21:56:31,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 21:56:31,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-06 21:56:31,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1512851975, now seen corresponding path program 1 times [2023-11-06 21:56:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:31,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812367095] [2023-11-06 21:56:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:31,626 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 21:56:31,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:31,628 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 21:56:31,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 (3)] Waiting until timeout for monitored process [2023-11-06 21:56:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:56:31,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:56:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:56:31,833 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 21:56:31,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 21:56:31,835 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-06 21:56:31,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-06 21:56:31,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:56:32,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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 21:56:32,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 21:56:32,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:56:32,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:56:32 BoogieIcfgContainer [2023-11-06 21:56:32,098 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:56:32,099 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:56:32,099 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:56:32,099 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:56:32,100 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:30" (3/4) ... [2023-11-06 21:56:32,102 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:56:32,104 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:56:32,105 INFO L158 Benchmark]: Toolchain (without parser) took 3707.50ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 38.2MB in the end (delta: 33.1MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2023-11-06 21:56:32,105 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 67.1MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:56:32,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1734.55ms. Allocated memory is still 98.6MB. Free memory was 71.0MB in the beginning and 58.0MB in the end (delta: 13.0MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-11-06 21:56:32,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.82ms. Allocated memory is still 98.6MB. Free memory was 58.0MB in the beginning and 54.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:56:32,107 INFO L158 Benchmark]: Boogie Preprocessor took 61.79ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:56:32,108 INFO L158 Benchmark]: RCFGBuilder took 544.61ms. Allocated memory is still 98.6MB. Free memory was 52.8MB in the beginning and 68.9MB in the end (delta: -16.2MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-06 21:56:32,108 INFO L158 Benchmark]: TraceAbstraction took 1248.21ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 38.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-06 21:56:32,109 INFO L158 Benchmark]: Witness Printer took 5.07ms. Allocated memory is still 98.6MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:56:32,112 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 67.1MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1734.55ms. Allocated memory is still 98.6MB. Free memory was 71.0MB in the beginning and 58.0MB in the end (delta: 13.0MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.82ms. Allocated memory is still 98.6MB. Free memory was 58.0MB in the beginning and 54.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.79ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 52.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.61ms. Allocated memory is still 98.6MB. Free memory was 52.8MB in the beginning and 68.9MB in the end (delta: -16.2MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1248.21ms. Allocated memory is still 98.6MB. Free memory was 68.1MB in the beginning and 38.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 5.07ms. Allocated memory is still 98.6MB. Free memory is still 38.2MB. 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: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [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_postdec_16_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE 1 [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] COND TRUE 1 [L1570] data-- VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data--=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 26 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 21:56:32,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a790ff7b-69b9-4a59-9f18-8a8c4f0736b2/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