./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1 --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 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:37:33,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:37:33,158 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-12-02 08:37:33,162 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:37:33,162 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:37:33,182 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:37:33,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:37:33,183 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:37:33,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:37:33,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:37:33,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:37:33,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:37:33,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:37:33,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:37:33,184 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:37:33,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:37:33,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:37:33,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:33,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:37:33,186 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:33,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:37:33,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:37:33,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:37:33,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:37:33,188 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:37:33,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:37:33,188 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1 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 -> 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 [2024-12-02 08:37:33,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:37:33,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:37:33,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:37:33,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:37:33,395 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:37:33,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2024-12-02 08:37:35,993 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/0830c5bab/fd61e13ddd2346638f3c47371a2e68bd/FLAG72ef5413b [2024-12-02 08:37:36,291 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:37:36,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2024-12-02 08:37:36,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/0830c5bab/fd61e13ddd2346638f3c47371a2e68bd/FLAG72ef5413b [2024-12-02 08:37:36,562 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/0830c5bab/fd61e13ddd2346638f3c47371a2e68bd [2024-12-02 08:37:36,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:37:36,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:37:36,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:37:36,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:37:36,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:37:36,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:37:36" (1/1) ... [2024-12-02 08:37:36,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c400b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:36, skipping insertion in model container [2024-12-02 08:37:36,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:37:36" (1/1) ... [2024-12-02 08:37:36,603 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:37:37,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:37:37,240 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:37:37,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:37:37,385 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:37:37,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37 WrapperNode [2024-12-02 08:37:37,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:37:37,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:37:37,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:37:37,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:37:37,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,429 INFO L138 Inliner]: procedures = 498, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2024-12-02 08:37:37,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:37:37,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:37:37,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:37:37,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:37:37,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,439 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,448 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-12-02 08:37:37,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,451 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,454 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,456 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:37:37,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:37:37,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:37:37,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:37:37,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (1/1) ... [2024-12-02 08:37:37,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:37,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:37,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:37:37,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:37:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2024-12-02 08:37:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2024-12-02 08:37:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2024-12-02 08:37:37,497 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2024-12-02 08:37:37,497 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 08:37:37,498 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 08:37:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:37:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:37:37,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:37:37,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:37:37,593 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:37:37,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:37:37,704 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-02 08:37:37,704 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:37:37,713 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:37:37,713 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 08:37:37,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:37 BoogieIcfgContainer [2024-12-02 08:37:37,714 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:37:37,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:37:37,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:37:37,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:37:37,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:37:36" (1/3) ... [2024-12-02 08:37:37,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2d12f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:37:37, skipping insertion in model container [2024-12-02 08:37:37,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:37" (2/3) ... [2024-12-02 08:37:37,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2d12f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:37:37, skipping insertion in model container [2024-12-02 08:37:37,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:37" (3/3) ... [2024-12-02 08:37:37,721 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2024-12-02 08:37:37,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:37:37,732 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_12_bad.i that has 4 procedures, 43 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-12-02 08:37:37,776 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:37:37,784 INFO L333 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, 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;@785942ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:37:37,784 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 08:37:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 33 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:37:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 08:37:37,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:37,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:37,793 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-12-02 08:37:37,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:37,798 INFO L85 PathProgramCache]: Analyzing trace with hash -355456766, now seen corresponding path program 1 times [2024-12-02 08:37:37,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:37,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583960554] [2024-12-02 08:37:37,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:37,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:37:38,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583960554] [2024-12-02 08:37:38,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583960554] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:38,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:37:38,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212884101] [2024-12-02 08:37:38,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:38,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:38,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:38,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:38,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:38,044 INFO L87 Difference]: Start difference. First operand has 43 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 33 states have internal predecessors, (36), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:37:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:38,094 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2024-12-02 08:37:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2024-12-02 08:37:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:38,099 INFO L225 Difference]: With dead ends: 65 [2024-12-02 08:37:38,099 INFO L226 Difference]: Without dead ends: 38 [2024-12-02 08:37:38,101 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:38,103 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:38,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-12-02 08:37:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-12-02 08:37:38,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.28) internal successors, (32), 28 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:37:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-12-02 08:37:38,129 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2024-12-02 08:37:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:38,130 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-12-02 08:37:38,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:37:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-12-02 08:37:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 08:37:38,132 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:38,132 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:38,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:37:38,132 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-12-02 08:37:38,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:38,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1865742213, now seen corresponding path program 1 times [2024-12-02 08:37:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548775647] [2024-12-02 08:37:38,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:38,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:37:38,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:37:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548775647] [2024-12-02 08:37:38,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548775647] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:38,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:38,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:37:38,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681729024] [2024-12-02 08:37:38,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:38,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:38,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:37:38,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:38,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:38,212 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:37:38,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:38,234 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-12-02 08:37:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:38,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2024-12-02 08:37:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:38,236 INFO L225 Difference]: With dead ends: 46 [2024-12-02 08:37:38,236 INFO L226 Difference]: Without dead ends: 36 [2024-12-02 08:37:38,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:38,237 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:38,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:38,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-12-02 08:37:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-12-02 08:37:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 08:37:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-12-02 08:37:38,243 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 22 [2024-12-02 08:37:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:38,243 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-12-02 08:37:38,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:37:38,243 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-12-02 08:37:38,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 08:37:38,244 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:38,244 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:38,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:37:38,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-12-02 08:37:38,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1699768473, now seen corresponding path program 1 times [2024-12-02 08:37:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:37:38,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871465207] [2024-12-02 08:37:38,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:37:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:37:38,283 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:37:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:37:38,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:37:38,329 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:37:38,330 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-12-02 08:37:38,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-12-02 08:37:38,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-12-02 08:37:38,332 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-12-02 08:37:38,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:37:38,335 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 08:37:38,355 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 08:37:38,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:37:38 BoogieIcfgContainer [2024-12-02 08:37:38,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 08:37:38,359 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 08:37:38,359 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 08:37:38,359 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 08:37:38,359 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:37" (3/4) ... [2024-12-02 08:37:38,361 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 08:37:38,361 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 08:37:38,362 INFO L158 Benchmark]: Toolchain (without parser) took 1797.60ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 109.5MB in the end (delta: 4.5MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-12-02 08:37:38,362 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:38,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 820.27ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 54.2MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-12-02 08:37:38,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.26ms. Allocated memory is still 142.6MB. Free memory was 53.9MB in the beginning and 113.3MB in the end (delta: -59.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2024-12-02 08:37:38,363 INFO L158 Benchmark]: Boogie Preprocessor took 26.17ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 111.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:38,363 INFO L158 Benchmark]: RCFGBuilder took 257.37ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 97.5MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:37:38,364 INFO L158 Benchmark]: TraceAbstraction took 643.02ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 109.5MB in the end (delta: -12.7MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2024-12-02 08:37:38,364 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 109.5MB in the end (delta: 9.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:38,365 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 142.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 820.27ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 54.2MB in the end (delta: 59.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.26ms. Allocated memory is still 142.6MB. Free memory was 53.9MB in the beginning and 113.3MB in the end (delta: -59.4MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.17ms. Allocated memory is still 142.6MB. Free memory was 113.3MB in the beginning and 111.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 257.37ms. Allocated memory is still 142.6MB. Free memory was 111.3MB in the beginning and 97.5MB in the end (delta: 13.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 643.02ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 109.5MB in the end (delta: -12.7MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 142.6MB. Free memory was 109.5MB in the beginning and 109.5MB in the end (delta: 9.0kB). 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: 1573]: 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, overapproximation of fgets at line 1556. 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] [L1593] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={4:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1593] RET 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] [L1594] CALL CWE191_Integer_Underflow__int_fgets_sub_12_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] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() 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 globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() 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] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: 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 4 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 76 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 6/6 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 08:37:38,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1 --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 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:37:40,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:37:40,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-12-02 08:37:40,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:37:40,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:37:40,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-12-02 08:37:40,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:37:40,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:37:40,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:37:40,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:37:40,375 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:37:40,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:37:40,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:37:40,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:37:40,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:37:40,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:37:40,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:37:40,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:40,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:40,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:37:40,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:37:40,379 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1 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 -> 9669eaa504993e58400e39aa486d7137654633921a41df1436ba4312e9969738 [2024-12-02 08:37:40,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:37:40,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:37:40,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:37:40,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:37:40,603 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:37:40,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2024-12-02 08:37:43,220 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/cb3033799/e8fe9019221845afa4317daa6584e81e/FLAG2bfd1a53e [2024-12-02 08:37:43,551 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:37:43,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2024-12-02 08:37:43,571 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/cb3033799/e8fe9019221845afa4317daa6584e81e/FLAG2bfd1a53e [2024-12-02 08:37:43,806 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/data/cb3033799/e8fe9019221845afa4317daa6584e81e [2024-12-02 08:37:43,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:37:43,808 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:37:43,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:37:43,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:37:43,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:37:43,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:37:43" (1/1) ... [2024-12-02 08:37:43,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654663a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:43, skipping insertion in model container [2024-12-02 08:37:43,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:37:43" (1/1) ... [2024-12-02 08:37:43,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:37:44,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:37:44,463 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:37:44,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:37:44,672 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:37:44,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44 WrapperNode [2024-12-02 08:37:44,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:37:44,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:37:44,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:37:44,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:37:44,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,713 INFO L138 Inliner]: procedures = 503, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-12-02 08:37:44,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:37:44,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:37:44,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:37:44,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:37:44,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,725 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,738 INFO L175 MemorySlicer]: Split 1 memory accesses to 1 slices as follows [1]. 100 percent of accesses are in the largest equivalence class. The 1 initializations are split as follows [1]. The 0 writes are split as follows [0]. [2024-12-02 08:37:44,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,745 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,747 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:37:44,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:37:44,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:37:44,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:37:44,754 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (1/1) ... [2024-12-02 08:37:44,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:37:44,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:44,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:37:44,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:37:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2024-12-02 08:37:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2024-12-02 08:37:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2024-12-02 08:37:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2024-12-02 08:37:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 08:37:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 08:37:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 08:37:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:37:44,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:37:44,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:37:44,917 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:37:44,918 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:37:45,042 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 08:37:45,042 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:37:45,049 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:37:45,049 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 08:37:45,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:45 BoogieIcfgContainer [2024-12-02 08:37:45,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:37:45,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:37:45,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:37:45,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:37:45,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:37:43" (1/3) ... [2024-12-02 08:37:45,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63406564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:37:45, skipping insertion in model container [2024-12-02 08:37:45,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:37:44" (2/3) ... [2024-12-02 08:37:45,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63406564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:37:45, skipping insertion in model container [2024-12-02 08:37:45,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:45" (3/3) ... [2024-12-02 08:37:45,058 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_12_bad.i [2024-12-02 08:37:45,071 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:37:45,073 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_12_bad.i that has 4 procedures, 41 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2024-12-02 08:37:45,110 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:37:45,119 INFO L333 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, 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;@7e31045a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:37:45,119 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 08:37:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.36) internal successors, (34), 31 states have internal predecessors, (34), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-12-02 08:37:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-02 08:37:45,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:45,129 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:45,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-12-02 08:37:45,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1813595353, now seen corresponding path program 1 times [2024-12-02 08:37:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:37:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643747176] [2024-12-02 08:37:45,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:45,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:45,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:45,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:37:45,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:37:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:37:45,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 08:37:45,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:37:45,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 08:37:45,300 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:37:45,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:37:45,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643747176] [2024-12-02 08:37:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643747176] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:37:45,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:37:45,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:37:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132006149] [2024-12-02 08:37:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:37:45,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:37:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:37:45,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:37:45,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:45,321 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.36) internal successors, (34), 31 states have internal predecessors, (34), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:37:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:37:45,368 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2024-12-02 08:37:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:37:45,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2024-12-02 08:37:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:37:45,374 INFO L225 Difference]: With dead ends: 61 [2024-12-02 08:37:45,374 INFO L226 Difference]: Without dead ends: 23 [2024-12-02 08:37:45,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:37:45,379 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:37:45,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 79 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:37:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-12-02 08:37:45,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-12-02 08:37:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 08:37:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-12-02 08:37:45,405 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2024-12-02 08:37:45,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:37:45,406 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-12-02 08:37:45,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-02 08:37:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-12-02 08:37:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 08:37:45,408 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:37:45,408 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:37:45,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:37:45,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:45,609 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2024-12-02 08:37:45,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:37:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1156353730, now seen corresponding path program 1 times [2024-12-02 08:37:45,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:37:45,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652600029] [2024-12-02 08:37:45,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:37:45,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:45,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:37:45,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:37:45,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:37:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:37:45,691 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:37:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:37:45,734 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 08:37:45,734 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:37:45,735 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-12-02 08:37:45,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-12-02 08:37:45,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-12-02 08:37:45,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-12-02 08:37:45,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:37:45,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:37:45,940 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:37:45,955 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 08:37:45,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:37:45 BoogieIcfgContainer [2024-12-02 08:37:45,957 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 08:37:45,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 08:37:45,958 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 08:37:45,958 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 08:37:45,958 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:37:45" (3/4) ... [2024-12-02 08:37:45,960 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 08:37:45,960 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 08:37:45,961 INFO L158 Benchmark]: Toolchain (without parser) took 2152.42ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 66.4MB in the beginning and 90.2MB in the end (delta: -23.8MB). Peak memory consumption was 28.5MB. Max. memory is 16.1GB. [2024-12-02 08:37:45,961 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:45,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 863.65ms. Allocated memory is still 92.3MB. Free memory was 66.2MB in the beginning and 62.9MB in the end (delta: 3.3MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2024-12-02 08:37:45,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.91ms. Allocated memory is still 92.3MB. Free memory was 62.9MB in the beginning and 60.2MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:45,962 INFO L158 Benchmark]: Boogie Preprocessor took 38.75ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 58.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:45,962 INFO L158 Benchmark]: RCFGBuilder took 296.59ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 43.4MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:37:45,962 INFO L158 Benchmark]: TraceAbstraction took 905.53ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 42.6MB in the beginning and 90.8MB in the end (delta: -48.2MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2024-12-02 08:37:45,962 INFO L158 Benchmark]: Witness Printer took 2.72ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 90.2MB in the end (delta: 526.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:37:45,964 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 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 863.65ms. Allocated memory is still 92.3MB. Free memory was 66.2MB in the beginning and 62.9MB in the end (delta: 3.3MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.91ms. Allocated memory is still 92.3MB. Free memory was 62.9MB in the beginning and 60.2MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.75ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 58.0MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 296.59ms. Allocated memory is still 92.3MB. Free memory was 57.6MB in the beginning and 43.4MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 905.53ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 42.6MB in the beginning and 90.8MB in the end (delta: -48.2MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 2.72ms. Allocated memory is still 142.6MB. Free memory was 90.8MB in the beginning and 90.2MB in the end (delta: 526.6kB). 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: 1573]: 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, overapproximation of fgets at line 1556. 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] [L1593] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={4:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1593] RET 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] [L1594] CALL CWE191_Integer_Underflow__int_fgets_sub_12_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] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() 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 globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; 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] [L1556] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] data = atoi(inputBuffer) [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() 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] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1581]: 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 4 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 79 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 43 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 3/3 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 08:37:45,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4aa40b51-8705-4eca-894a-a8f97db38fa6/bin/uautomizer-verify-84ZbGMXZE1/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample