./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_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_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/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_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/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_1fe362cb-607a-460f-b06f-be0bb3084732/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 fac754b3a0bcdcb03991b3c373097e5c624db5de2c17e9fa2d2883764f9dbe5b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:22:55,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:22:55,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-12-02 12:22:55,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:22:55,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:22:55,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:22:55,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:22:55,430 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:22:55,430 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:22:55,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:22:55,431 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:22:55,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:22:55,431 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:22:55,431 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:22:55,431 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:22:55,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:22:55,432 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:22:55,433 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:22:55,433 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:22:55,433 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:22:55,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:22:55,434 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:22:55,434 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_1fe362cb-607a-460f-b06f-be0bb3084732/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 -> fac754b3a0bcdcb03991b3c373097e5c624db5de2c17e9fa2d2883764f9dbe5b [2024-12-02 12:22:55,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:22:55,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:22:55,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:22:55,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:22:55,686 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:22:55,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_bad.i [2024-12-02 12:22:58,513 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/be0ef33c0/86c7da79fe114d7b8a13356523d868ff/FLAG573a13b4f [2024-12-02 12:22:58,790 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:22:58,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_bad.i [2024-12-02 12:22:58,810 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/be0ef33c0/86c7da79fe114d7b8a13356523d868ff/FLAG573a13b4f [2024-12-02 12:22:58,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/be0ef33c0/86c7da79fe114d7b8a13356523d868ff [2024-12-02 12:22:58,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:22:58,830 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:22:58,831 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:22:58,831 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:22:58,836 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:22:58,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:58" (1/1) ... [2024-12-02 12:22:58,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51dae7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:58, skipping insertion in model container [2024-12-02 12:22:58,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:58" (1/1) ... [2024-12-02 12:22:58,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:22:59,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:22:59,537 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:22:59,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:22:59,729 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:22:59,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59 WrapperNode [2024-12-02 12:22:59,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:22:59,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:22:59,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:22:59,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:22:59,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,780 INFO L138 Inliner]: procedures = 498, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2024-12-02 12:22:59,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:22:59,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:22:59,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:22:59,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:22:59,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,794 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,807 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 12:22:59,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,816 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:22:59,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:22:59,822 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:22:59,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:22:59,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (1/1) ... [2024-12-02 12:22:59,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:22:59,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:22:59,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:22:59,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:22:59,874 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 12:22:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 12:22:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:22:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:22:59,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:22:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:22:59,990 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:22:59,991 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:23:00,102 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-12-02 12:23:00,102 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:23:00,110 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:23:00,110 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:23:00,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:00 BoogieIcfgContainer [2024-12-02 12:23:00,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:23:00,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:23:00,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:23:00,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:23:00,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:58" (1/3) ... [2024-12-02 12:23:00,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31309942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:00, skipping insertion in model container [2024-12-02 12:23:00,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:59" (2/3) ... [2024-12-02 12:23:00,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31309942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:00, skipping insertion in model container [2024-12-02 12:23:00,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:00" (3/3) ... [2024-12-02 12:23:00,119 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_17_bad.i [2024-12-02 12:23:00,131 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:23:00,132 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_17_bad.i that has 2 procedures, 34 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2024-12-02 12:23:00,175 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:23:00,186 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;@11eae141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:23:00,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 12:23:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:23:00,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 12:23:00,194 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:00,194 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:00,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 12:23:00,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:00,199 INFO L85 PathProgramCache]: Analyzing trace with hash 182664546, now seen corresponding path program 1 times [2024-12-02 12:23:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:00,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263814548] [2024-12-02 12:23:00,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:00,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:00,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:00,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263814548] [2024-12-02 12:23:00,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263814548] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:00,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:00,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:23:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137394040] [2024-12-02 12:23:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:00,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:23:00,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:00,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:23:00,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:23:00,445 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:00,474 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2024-12-02 12:23:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:23:00,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-12-02 12:23:00,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:00,481 INFO L225 Difference]: With dead ends: 60 [2024-12-02 12:23:00,481 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 12:23:00,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 12:23:00,485 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:00,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 70 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:00,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 12:23:00,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2024-12-02 12:23:00,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 12:23:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-12-02 12:23:00,516 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 12 [2024-12-02 12:23:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:00,516 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-12-02 12:23:00,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-12-02 12:23:00,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 12:23:00,518 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:00,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:00,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:23:00,519 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 12:23:00,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:00,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1365291146, now seen corresponding path program 1 times [2024-12-02 12:23:00,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648066779] [2024-12-02 12:23:00,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:00,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:00,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648066779] [2024-12-02 12:23:00,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648066779] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:00,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:00,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:23:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239379316] [2024-12-02 12:23:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:00,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:23:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:00,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:23:00,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:23:00,678 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:00,734 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-12-02 12:23:00,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:23:00,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-12-02 12:23:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:00,736 INFO L225 Difference]: With dead ends: 37 [2024-12-02 12:23:00,736 INFO L226 Difference]: Without dead ends: 35 [2024-12-02 12:23:00,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:23:00,737 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:00,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 79 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-12-02 12:23:00,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-12-02 12:23:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.4) internal successors, (35), 32 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:23:00,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-12-02 12:23:00,743 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 13 [2024-12-02 12:23:00,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:00,743 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-12-02 12:23:00,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-12-02 12:23:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 12:23:00,744 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:00,744 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:00,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:23:00,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 12:23:00,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -827868915, now seen corresponding path program 1 times [2024-12-02 12:23:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572609217] [2024-12-02 12:23:00,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:00,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:23:00,775 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 12:23:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:23:00,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 12:23:00,810 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 12:23:00,811 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-12-02 12:23:00,813 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-12-02 12:23:00,813 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-12-02 12:23:00,813 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-12-02 12:23:00,813 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-12-02 12:23:00,813 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-12-02 12:23:00,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:23:00,817 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 12:23:00,841 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:23:00,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:23:00 BoogieIcfgContainer [2024-12-02 12:23:00,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:23:00,845 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:23:00,845 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:23:00,845 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:23:00,846 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:00" (3/4) ... [2024-12-02 12:23:00,848 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 12:23:00,849 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:23:00,850 INFO L158 Benchmark]: Toolchain (without parser) took 2020.28ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 78.9MB in the end (delta: 10.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2024-12-02 12:23:00,850 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:00,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 898.80ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 81.7MB in the end (delta: 7.4MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-12-02 12:23:00,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.14ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 79.3MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:23:00,851 INFO L158 Benchmark]: Boogie Preprocessor took 39.91ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:00,851 INFO L158 Benchmark]: RCFGBuilder took 288.85ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 64.5MB in the end (delta: 13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:23:00,852 INFO L158 Benchmark]: TraceAbstraction took 731.38ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 78.9MB in the end (delta: -14.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:00,852 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 78.9MB in the end (delta: 13.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:00,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory was 71.8MB in the beginning and 71.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 898.80ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 81.7MB in the end (delta: 7.4MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.14ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 79.3MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.91ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 288.85ms. Allocated memory is still 117.4MB. Free memory was 77.5MB in the beginning and 64.5MB in the end (delta: 13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 731.38ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 78.9MB in the end (delta: -14.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 117.4MB. Free memory was 78.9MB in the beginning and 78.9MB in the end (delta: 13.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559, overapproximation of fgets at line 1557. 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] [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_sub_17_bad() [L1550] int i,j; [L1551] int data; [L1552] data = 0 [L1553] i = 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, i=0] [L1553] COND TRUE i < 1 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, i=0] [L1556] 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, i=0] [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1553] i++ 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, i=1] [L1553] COND FALSE !(i < 1) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] j = 0 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, j=0] [L1567] COND TRUE j < 1 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, j=0] [L1570] 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, j=0] - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 65 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 12:23:00,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/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_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/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_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/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_1fe362cb-607a-460f-b06f-be0bb3084732/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 fac754b3a0bcdcb03991b3c373097e5c624db5de2c17e9fa2d2883764f9dbe5b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:23:02,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:23:03,027 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Bitvector.epf [2024-12-02 12:23:03,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:23:03,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:23:03,035 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2024-12-02 12:23:03,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:23:03,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:23:03,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:23:03,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:23:03,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:23:03,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:23:03,064 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:23:03,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:23:03,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:23:03,064 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:23:03,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 12:23:03,065 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:23:03,066 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:23:03,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:23:03,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:23:03,067 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 12:23:03,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:23:03,068 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:23:03,068 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:23:03,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:23:03,068 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_1fe362cb-607a-460f-b06f-be0bb3084732/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 -> fac754b3a0bcdcb03991b3c373097e5c624db5de2c17e9fa2d2883764f9dbe5b [2024-12-02 12:23:03,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:23:03,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:23:03,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:23:03,340 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:23:03,340 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:23:03,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_bad.i [2024-12-02 12:23:06,105 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/96b416b40/ed533b228c564609b48bf9a28946f5cf/FLAG2f611e395 [2024-12-02 12:23:06,387 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:23:06,388 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_17_bad.i [2024-12-02 12:23:06,404 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/96b416b40/ed533b228c564609b48bf9a28946f5cf/FLAG2f611e395 [2024-12-02 12:23:06,658 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/data/96b416b40/ed533b228c564609b48bf9a28946f5cf [2024-12-02 12:23:06,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:23:06,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:23:06,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:23:06,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:23:06,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:23:06,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:06" (1/1) ... [2024-12-02 12:23:06,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3a616f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:06, skipping insertion in model container [2024-12-02 12:23:06,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:23:06" (1/1) ... [2024-12-02 12:23:06,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:23:07,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:23:07,438 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:23:07,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:23:07,640 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:23:07,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07 WrapperNode [2024-12-02 12:23:07,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:23:07,642 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:23:07,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:23:07,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:23:07,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,668 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,687 INFO L138 Inliner]: procedures = 503, calls = 27, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-12-02 12:23:07,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:23:07,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:23:07,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:23:07,688 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:23:07,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,712 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 12:23:07,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,720 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:23:07,732 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:23:07,732 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:23:07,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:23:07,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (1/1) ... [2024-12-02 12:23:07,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:23:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:07,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:23:07,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:23:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2024-12-02 12:23:07,782 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2024-12-02 12:23:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 12:23:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:23:07,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:23:07,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:23:07,899 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:23:07,901 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:23:08,041 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-12-02 12:23:08,041 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:23:08,050 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:23:08,051 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:23:08,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:08 BoogieIcfgContainer [2024-12-02 12:23:08,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:23:08,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:23:08,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:23:08,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:23:08,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:23:06" (1/3) ... [2024-12-02 12:23:08,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fd02c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:08, skipping insertion in model container [2024-12-02 12:23:08,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:23:07" (2/3) ... [2024-12-02 12:23:08,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fd02c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:23:08, skipping insertion in model container [2024-12-02 12:23:08,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:08" (3/3) ... [2024-12-02 12:23:08,059 INFO L128 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_17_bad.i [2024-12-02 12:23:08,070 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:23:08,072 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG CWE191_Integer_Underflow__int_fgets_sub_17_bad.i that has 2 procedures, 34 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2024-12-02 12:23:08,112 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:23:08,123 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;@3dd6591d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:23:08,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 12:23:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:23:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-02 12:23:08,131 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:08,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:08,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 12:23:08,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:08,136 INFO L85 PathProgramCache]: Analyzing trace with hash 182664546, now seen corresponding path program 1 times [2024-12-02 12:23:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:23:08,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945922838] [2024-12-02 12:23:08,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:08,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:08,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:08,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:08,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:23:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:08,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:23:08,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:23:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:08,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:23:08,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:23:08,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945922838] [2024-12-02 12:23:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945922838] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:08,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:23:08,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86515487] [2024-12-02 12:23:08,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:08,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:23:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:23:08,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:23:08,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:23:08,341 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:08,383 INFO L93 Difference]: Finished difference Result 70 states and 91 transitions. [2024-12-02 12:23:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:23:08,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-12-02 12:23:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:08,392 INFO L225 Difference]: With dead ends: 70 [2024-12-02 12:23:08,392 INFO L226 Difference]: Without dead ends: 41 [2024-12-02 12:23:08,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 12:23:08,398 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:08,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:08,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-12-02 12:23:08,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-12-02 12:23:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.3125) internal successors, (42), 35 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-02 12:23:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2024-12-02 12:23:08,432 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 12 [2024-12-02 12:23:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:08,433 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2024-12-02 12:23:08,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:08,433 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2024-12-02 12:23:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-02 12:23:08,434 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:08,435 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:08,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:23:08,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:08,635 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 12:23:08,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash -625647370, now seen corresponding path program 1 times [2024-12-02 12:23:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:23:08,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548478335] [2024-12-02 12:23:08,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:08,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:08,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:08,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:23:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:23:08,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:23:08,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:23:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:08,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:23:08,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:23:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548478335] [2024-12-02 12:23:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548478335] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:23:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:23:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169086301] [2024-12-02 12:23:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:08,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:23:08,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:23:08,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:23:08,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:23:08,784 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:23:08,820 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-12-02 12:23:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:23:08,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-12-02 12:23:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:23:08,821 INFO L225 Difference]: With dead ends: 58 [2024-12-02 12:23:08,821 INFO L226 Difference]: Without dead ends: 49 [2024-12-02 12:23:08,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:23:08,822 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:23:08,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:23:08,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-12-02 12:23:08,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-12-02 12:23:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 44 states have internal predecessors, (52), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 12:23:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2024-12-02 12:23:08,830 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 14 [2024-12-02 12:23:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:23:08,830 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2024-12-02 12:23:08,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-02 12:23:08,831 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2024-12-02 12:23:08,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-02 12:23:08,831 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:23:08,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:08,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:23:09,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:09,032 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 12:23:09,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash -827868915, now seen corresponding path program 1 times [2024-12-02 12:23:09,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:23:09,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482848473] [2024-12-02 12:23:09,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:23:09,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:09,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:09,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:23:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:23:09,117 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 12:23:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 12:23:09,156 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 12:23:09,156 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 12:23:09,157 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-12-02 12:23:09,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-12-02 12:23:09,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-12-02 12:23:09,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-12-02 12:23:09,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-12-02 12:23:09,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-12-02 12:23:09,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:23:09,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:09,363 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 12:23:09,381 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 12:23:09,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:23:09 BoogieIcfgContainer [2024-12-02 12:23:09,384 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 12:23:09,385 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 12:23:09,385 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 12:23:09,386 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 12:23:09,386 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:23:08" (3/4) ... [2024-12-02 12:23:09,388 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 12:23:09,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 12:23:09,390 INFO L158 Benchmark]: Toolchain (without parser) took 2728.88ms. Allocated memory is still 92.3MB. Free memory was 66.3MB in the beginning and 31.5MB in the end (delta: 34.9MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2024-12-02 12:23:09,390 INFO L158 Benchmark]: CDTParser took 0.34ms. 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 12:23:09,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 979.22ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 60.8MB in the end (delta: 5.4MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2024-12-02 12:23:09,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.78ms. Allocated memory is still 92.3MB. Free memory was 60.8MB in the beginning and 57.9MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:09,391 INFO L158 Benchmark]: Boogie Preprocessor took 42.95ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 55.4MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:09,391 INFO L158 Benchmark]: RCFGBuilder took 319.47ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 41.3MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 12:23:09,392 INFO L158 Benchmark]: TraceAbstraction took 1331.30ms. Allocated memory is still 92.3MB. Free memory was 40.4MB in the beginning and 32.0MB in the end (delta: 8.4MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2024-12-02 12:23:09,392 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 92.3MB. Free memory was 32.0MB in the beginning and 31.5MB in the end (delta: 527.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:23:09,394 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 47.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 979.22ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 60.8MB in the end (delta: 5.4MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.78ms. Allocated memory is still 92.3MB. Free memory was 60.8MB in the beginning and 57.9MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.95ms. Allocated memory is still 92.3MB. Free memory was 57.9MB in the beginning and 55.4MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.47ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 41.3MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1331.30ms. Allocated memory is still 92.3MB. Free memory was 40.4MB in the beginning and 32.0MB in the end (delta: 8.4MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 92.3MB. Free memory was 32.0MB in the beginning and 31.5MB in the end (delta: 527.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1559, overapproximation of fgets at line 1557. 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] [L1578] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(line)={3:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1414] COND TRUE line != ((void *)0) [L1578] 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] [L1579] CALL CWE191_Integer_Underflow__int_fgets_sub_17_bad() [L1550] int i,j; [L1551] int data; [L1552] data = 0 [L1553] i = 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, i=0] [L1553] COND TRUE i < 1 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, i=0] [L1556] 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, i=0] [L1557] COND TRUE fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1559] data = atoi(inputBuffer) [L1553] i++ 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, i=1] [L1553] COND FALSE !(i < 1) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1567] j = 0 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, j=0] [L1567] COND TRUE j < 1 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, j=0] [L1570] 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, j=0] - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1553]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1570]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1567]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 65 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 44 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 12:23:09,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1fe362cb-607a-460f-b06f-be0bb3084732/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