./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:14,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:14,266 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 11:53:14,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:14,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:14,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:14,317 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:14,317 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:14,318 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:14,323 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:14,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:14,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:14,325 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:14,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:14,328 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:14,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:14,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:14,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:53:14,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:14,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:14,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:14,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:14,332 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:14,333 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:14,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:14,334 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:14,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:14,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:14,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:14,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:14,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:14,338 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:14,338 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:14,338 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:14,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:53:14,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:53:14,339 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:14,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:14,340 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:14,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:14,341 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:14,341 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_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 [2023-11-26 11:53:14,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:14,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:14,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:14,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:14,694 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:14,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-26 11:53:17,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:18,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:18,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-26 11:53:18,251 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data/cd7553aa9/a2f64733d8c14bda9ce23834c14d14cb/FLAGc5c756e10 [2023-11-26 11:53:18,267 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data/cd7553aa9/a2f64733d8c14bda9ce23834c14d14cb [2023-11-26 11:53:18,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:18,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:18,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:18,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:18,279 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:18,280 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:18" (1/1) ... [2023-11-26 11:53:18,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249cfe85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:18, skipping insertion in model container [2023-11-26 11:53:18,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:18" (1/1) ... [2023-11-26 11:53:18,336 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:19,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:19,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:19,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:19,748 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:19,749 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:19,749 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:19,749 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:19,749 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:19,758 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:19,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19 WrapperNode [2023-11-26 11:53:19,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:19,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:19,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:19,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:19,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,865 INFO L138 Inliner]: procedures = 499, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2023-11-26 11:53:19,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:19,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:19,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:19,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:19,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,904 INFO L175 MemorySlicer]: Split 6 memory accesses to 4 slices as follows [1, 1, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0]. The 3 writes are split as follows [0, 0, 1, 2]. [2023-11-26 11:53:19,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,905 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,925 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,930 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:19,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:19,938 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:19,938 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:19,939 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (1/1) ... [2023-11-26 11:53:19,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:19,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:19,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:19,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-26 11:53:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-26 11:53:20,007 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-26 11:53:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-26 11:53:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-26 11:53:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-26 11:53:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-26 11:53:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:53:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:53:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:53:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:53:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:20,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:20,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:20,013 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-26 11:53:20,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:53:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:53:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:53:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:53:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:53:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:53:20,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:53:20,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:53:20,219 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:20,222 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:20,402 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:20,435 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:20,435 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:53:20,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:20 BoogieIcfgContainer [2023-11-26 11:53:20,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:20,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:20,438 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:20,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:20,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:18" (1/3) ... [2023-11-26 11:53:20,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605db28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:20, skipping insertion in model container [2023-11-26 11:53:20,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:19" (2/3) ... [2023-11-26 11:53:20,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605db28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:20, skipping insertion in model container [2023-11-26 11:53:20,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:20" (3/3) ... [2023-11-26 11:53:20,445 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-26 11:53:20,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:20,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:53:20,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:20,524 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d5c3db0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:20,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:53:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-11-26 11:53:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:53:20,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:20,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:20,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 11:53:20,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash 610853811, now seen corresponding path program 1 times [2023-11-26 11:53:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:53:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30197612] [2023-11-26 11:53:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:20,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:53:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:20,724 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:53:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:20,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:53:20,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:53:20,863 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-26 11:53:20,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-26 11:53:20,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:53:20,874 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:53:20,879 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:53:20,907 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-11-26 11:53:20,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:53:20 BoogieIcfgContainer [2023-11-26 11:53:20,916 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:53:20,916 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:53:20,916 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:53:20,917 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:53:20,917 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:20" (3/4) ... [2023-11-26 11:53:20,919 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:53:20,920 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:53:20,921 INFO L158 Benchmark]: Toolchain (without parser) took 2649.85ms. Allocated memory was 140.5MB in the beginning and 199.2MB in the end (delta: 58.7MB). Free memory was 105.6MB in the beginning and 113.7MB in the end (delta: -8.1MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2023-11-26 11:53:20,922 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:20,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1486.15ms. Allocated memory was 140.5MB in the beginning and 199.2MB in the end (delta: 58.7MB). Free memory was 105.1MB in the beginning and 154.6MB in the end (delta: -49.5MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2023-11-26 11:53:20,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.91ms. Allocated memory is still 199.2MB. Free memory was 154.6MB in the beginning and 151.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:53:20,924 INFO L158 Benchmark]: Boogie Preprocessor took 69.55ms. Allocated memory is still 199.2MB. Free memory was 151.4MB in the beginning and 149.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:20,924 INFO L158 Benchmark]: RCFGBuilder took 497.92ms. Allocated memory is still 199.2MB. Free memory was 149.3MB in the beginning and 132.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:53:20,925 INFO L158 Benchmark]: TraceAbstraction took 477.42ms. Allocated memory is still 199.2MB. Free memory was 132.5MB in the beginning and 113.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:53:20,925 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 199.2MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:20,929 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1486.15ms. Allocated memory was 140.5MB in the beginning and 199.2MB in the end (delta: 58.7MB). Free memory was 105.1MB in the beginning and 154.6MB in the end (delta: -49.5MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 106.91ms. Allocated memory is still 199.2MB. Free memory was 154.6MB in the beginning and 151.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.55ms. Allocated memory is still 199.2MB. Free memory was 151.4MB in the beginning and 149.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.92ms. Allocated memory is still 199.2MB. Free memory was 149.3MB in the beginning and 132.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 477.42ms. Allocated memory is still 199.2MB. Free memory was 132.5MB in the beginning and 113.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 199.2MB. Free memory is still 113.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet103 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of large string literal at line 1582. 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); [L1582] 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) [L1582] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741827, argc=1073741827, argv={1073741831:1073741829}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] CALL CWE191_Integer_Underflow__int_fgets_multiply_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_multiply_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1572] COND TRUE data < 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={6:0}] [L1574] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-1073741825, data=-1073741825, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, myUnion={6:0}] - UnprovableResult [Line: 1574]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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 [2023-11-26 11:53:20,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:53:23,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:53:23,771 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2023-11-26 11:53:23,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:53:23,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:53:23,782 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-11-26 11:53:23,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:53:23,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:53:23,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:53:23,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:53:23,834 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:53:23,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:53:23,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:53:23,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:53:23,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:53:23,838 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:53:23,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:53:23,840 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:53:23,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:53:23,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:53:23,842 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:53:23,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:53:23,843 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:53:23,843 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:53:23,844 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:53:23,844 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:53:23,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:53:23,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:53:23,845 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:53:23,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:53:23,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:53:23,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:53:23,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:53:23,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:23,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:53:23,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:53:23,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:53:23,850 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:53:23,850 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:53:23,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:53:23,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:53:23,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:53:23,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:53:23,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:53:23,852 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:53:23,852 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_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0cbddd8e25a6e3b38116e03f8f52c69c0e00660fb4ec0212bf11ee637aa2208 [2023-11-26 11:53:24,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:53:24,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:53:24,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:53:24,347 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:53:24,348 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:53:24,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-26 11:53:27,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:53:27,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:53:27,914 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-26 11:53:27,949 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data/ee286ce72/bb23b4a09bf44a1980be3dfb66dcf945/FLAG36b6bc2ba [2023-11-26 11:53:27,969 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/data/ee286ce72/bb23b4a09bf44a1980be3dfb66dcf945 [2023-11-26 11:53:27,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:53:27,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:53:27,979 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:27,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:53:27,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:53:27,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:27" (1/1) ... [2023-11-26 11:53:27,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231fb454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:27, skipping insertion in model container [2023-11-26 11:53:27,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:53:27" (1/1) ... [2023-11-26 11:53:28,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:53:29,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:29,372 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:53:29,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:53:29,711 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:29,712 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:29,712 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:29,712 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:29,712 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:53:29,720 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:53:29,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29 WrapperNode [2023-11-26 11:53:29,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:53:29,723 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:29,723 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:53:29,723 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:53:29,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,806 INFO L138 Inliner]: procedures = 504, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2023-11-26 11:53:29,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:53:29,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:53:29,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:53:29,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:53:29,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,823 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,845 INFO L175 MemorySlicer]: Split 6 memory accesses to 4 slices as follows [1, 1, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [1, 1, 0, 0]. The 3 writes are split as follows [0, 0, 1, 2]. [2023-11-26 11:53:29,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:53:29,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:53:29,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:53:29,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:53:29,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (1/1) ... [2023-11-26 11:53:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:53:29,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:53:29,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:53:29,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:53:29,955 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-26 11:53:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-26 11:53:29,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-26 11:53:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:53:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:53:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-26 11:53:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-26 11:53:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-26 11:53:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:53:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:53:29,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:53:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-26 11:53:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-26 11:53:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-26 11:53:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-26 11:53:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:53:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-26 11:53:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-26 11:53:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-26 11:53:29,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-26 11:53:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-26 11:53:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#0 [2023-11-26 11:53:29,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#1 [2023-11-26 11:53:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#2 [2023-11-26 11:53:29,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1#3 [2023-11-26 11:53:30,148 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:53:30,150 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:53:30,386 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:53:30,438 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:53:30,438 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:53:30,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:30 BoogieIcfgContainer [2023-11-26 11:53:30,439 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:53:30,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:53:30,442 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:53:30,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:53:30,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:53:27" (1/3) ... [2023-11-26 11:53:30,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25943493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:30, skipping insertion in model container [2023-11-26 11:53:30,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:53:29" (2/3) ... [2023-11-26 11:53:30,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25943493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:53:30, skipping insertion in model container [2023-11-26 11:53:30,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:30" (3/3) ... [2023-11-26 11:53:30,449 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_multiply_34_bad.i [2023-11-26 11:53:30,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:53:30,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:53:30,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:53:30,519 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@737c3141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:53:30,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:53:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-11-26 11:53:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:53:30,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:53:30,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:53:30,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-26 11:53:30,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:53:30,543 INFO L85 PathProgramCache]: Analyzing trace with hash 610853811, now seen corresponding path program 1 times [2023-11-26 11:53:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:53:30,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552637117] [2023-11-26 11:53:30,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:53:30,560 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 [2023-11-26 11:53:30,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:53:30,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/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) [2023-11-26 11:53:30,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:53:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:30,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:53:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:53:30,931 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-26 11:53:30,934 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:53:30,935 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-26 11:53:30,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-26 11:53:30,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-26 11:53:31,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/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 [2023-11-26 11:53:31,145 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-26 11:53:31,150 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:53:31,181 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet101 [2023-11-26 11:53:31,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:53:31 BoogieIcfgContainer [2023-11-26 11:53:31,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:53:31,198 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:53:31,198 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:53:31,199 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:53:31,200 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:53:30" (3/4) ... [2023-11-26 11:53:31,203 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:53:31,204 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:53:31,207 INFO L158 Benchmark]: Toolchain (without parser) took 3230.38ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 43.5MB in the beginning and 36.2MB in the end (delta: 7.4MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2023-11-26 11:53:31,208 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:31,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1742.34ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 43.3MB in the beginning and 56.7MB in the end (delta: -13.3MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2023-11-26 11:53:31,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.08ms. Allocated memory is still 88.1MB. Free memory was 56.7MB in the beginning and 53.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:53:31,218 INFO L158 Benchmark]: Boogie Preprocessor took 73.70ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 50.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:53:31,219 INFO L158 Benchmark]: RCFGBuilder took 557.52ms. Allocated memory is still 88.1MB. Free memory was 50.4MB in the beginning and 55.7MB in the end (delta: -5.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:53:31,221 INFO L158 Benchmark]: TraceAbstraction took 754.40ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 36.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 11:53:31,222 INFO L158 Benchmark]: Witness Printer took 7.59ms. Allocated memory is still 88.1MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 152.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:53:31,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 71.3MB. Free memory is still 47.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1742.34ms. Allocated memory was 71.3MB in the beginning and 88.1MB in the end (delta: 16.8MB). Free memory was 43.3MB in the beginning and 56.7MB in the end (delta: -13.3MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.08ms. Allocated memory is still 88.1MB. Free memory was 56.7MB in the beginning and 53.7MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.70ms. Allocated memory is still 88.1MB. Free memory was 53.7MB in the beginning and 50.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 557.52ms. Allocated memory is still 88.1MB. Free memory was 50.4MB in the beginning and 55.7MB in the end (delta: -5.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 754.40ms. Allocated memory is still 88.1MB. Free memory was 55.2MB in the beginning and 36.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 7.59ms. Allocated memory is still 88.1MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 152.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet101 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1574]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1562, overapproximation of large string literal at line 1582. 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); [L1582] 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) [L1582] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={18:13}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1583] CALL CWE191_Integer_Underflow__int_fgets_multiply_34_bad() [L1555] int data; [L1556] CWE191_Integer_Underflow__int_fgets_multiply_34_unionType myUnion; [L1557] data = 0 [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1560] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1562] EXPR data = atoi(inputBuffer) [L1559] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1558-L1568] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1569] myUnion.unionFirst = data [L1571] EXPR myUnion.unionSecond [L1571] int data = myUnion.unionSecond; [L1572] COND TRUE data < 0 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, myUnion={12:0}] [L1574] data * 2 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, myUnion={12:0}] - UnprovableResult [Line: 1574]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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 [2023-11-26 11:53:31,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef10251-cc8e-48d9-a59d-4e120e5c9a64/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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