./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53188ff72b1ce95e48d25de4ce31cccbe9d156f2b92428a893dd412dbb1300ca --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:17:17,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:17:17,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 17:17:17,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:17:17,664 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:17:17,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:17:17,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:17:17,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:17:17,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:17:17,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:17:17,691 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:17:17,691 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:17:17,692 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:17:17,693 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:17:17,693 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:17:17,694 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:17:17,694 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:17:17,695 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:17:17,695 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:17:17,696 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:17:17,697 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:17:17,697 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:17:17,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:17:17,699 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:17:17,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:17:17,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:17:17,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:17:17,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:17:17,701 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:17:17,701 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:17:17,702 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:17:17,702 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:17:17,702 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:17:17,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:17:17,703 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:17:17,703 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:17:17,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:17:17,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:17:17,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:17:17,704 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:17:17,704 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:17:17,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:17:17,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:17:17,705 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:17:17,705 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:17:17,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:17:17,705 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53188ff72b1ce95e48d25de4ce31cccbe9d156f2b92428a893dd412dbb1300ca [2023-12-02 17:17:17,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:17:17,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:17:17,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:17:17,944 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:17:17,944 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:17:17,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i [2023-12-02 17:17:20,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:17:21,163 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:17:21,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i [2023-12-02 17:17:21,186 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data/4d7d95bd9/a22b448c911142138a51fd5c9600e3a6/FLAG0d18142b2 [2023-12-02 17:17:21,201 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data/4d7d95bd9/a22b448c911142138a51fd5c9600e3a6 [2023-12-02 17:17:21,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:17:21,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:17:21,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:17:21,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:17:21,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:17:21,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:17:21" (1/1) ... [2023-12-02 17:17:21,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fdc722a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:21, skipping insertion in model container [2023-12-02 17:17:21,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:17:21" (1/1) ... [2023-12-02 17:17:21,282 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:17:22,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:17:22,137 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:17:22,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:17:22,307 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:22,308 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:22,308 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:22,308 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:22,315 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:17:22,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22 WrapperNode [2023-12-02 17:17:22,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:17:22,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:17:22,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:17:22,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:17:22,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,375 INFO L138 Inliner]: procedures = 498, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2023-12-02 17:17:22,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:17:22,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:17:22,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:17:22,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:17:22,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,389 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,398 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,400 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:17:22,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:17:22,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:17:22,407 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:17:22,408 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (1/1) ... [2023-12-02 17:17:22,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:17:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:22,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:17:22,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:17:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 17:17:22,473 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 17:17:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:17:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:17:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:17:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:17:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:17:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:17:22,474 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 17:17:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:17:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:17:22,609 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:17:22,611 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:17:22,717 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:17:22,760 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:17:22,760 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:17:22,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:22 BoogieIcfgContainer [2023-12-02 17:17:22,761 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:17:22,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:17:22,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:17:22,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:17:22,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:17:21" (1/3) ... [2023-12-02 17:17:22,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f75a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:17:22, skipping insertion in model container [2023-12-02 17:17:22,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:22" (2/3) ... [2023-12-02 17:17:22,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f75a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:17:22, skipping insertion in model container [2023-12-02 17:17:22,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:22" (3/3) ... [2023-12-02 17:17:22,770 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i [2023-12-02 17:17:22,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:17:22,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:17:22,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:17:22,852 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@550a2ccc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:17:22,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:17:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:17:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 17:17:22,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:22,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 17:17:22,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 17:17:22,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:22,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1771518356, now seen corresponding path program 1 times [2023-12-02 17:17:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:17:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040416101] [2023-12-02 17:17:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:17:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:17:23,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:17:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:17:23,094 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:17:23,096 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:17:23,097 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 17:17:23,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 17:17:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:17:23,105 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:17:23,109 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:17:23,124 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-12-02 17:17:23,128 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 17:17:23,128 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 17:17:23,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:17:23 BoogieIcfgContainer [2023-12-02 17:17:23,137 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:17:23,137 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:17:23,138 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:17:23,138 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:17:23,138 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:22" (3/4) ... [2023-12-02 17:17:23,141 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:17:23,142 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:17:23,143 INFO L158 Benchmark]: Toolchain (without parser) took 1937.09ms. Allocated memory is still 142.6MB. Free memory was 95.3MB in the beginning and 91.1MB in the end (delta: 4.2MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-12-02 17:17:23,144 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:17:23,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1108.58ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 69.4MB in the end (delta: 25.5MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-12-02 17:17:23,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.21ms. Allocated memory is still 142.6MB. Free memory was 69.4MB in the beginning and 66.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:17:23,146 INFO L158 Benchmark]: Boogie Preprocessor took 29.35ms. Allocated memory is still 142.6MB. Free memory was 66.0MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:17:23,146 INFO L158 Benchmark]: RCFGBuilder took 355.05ms. Allocated memory is still 142.6MB. Free memory was 64.6MB in the beginning and 50.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 17:17:23,147 INFO L158 Benchmark]: TraceAbstraction took 373.13ms. Allocated memory is still 142.6MB. Free memory was 50.5MB in the beginning and 92.0MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:17:23,148 INFO L158 Benchmark]: Witness Printer took 4.51ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 91.1MB in the end (delta: 906.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:17:23,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 104.9MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1108.58ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 69.4MB in the end (delta: 25.5MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.21ms. Allocated memory is still 142.6MB. Free memory was 69.4MB in the beginning and 66.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.35ms. Allocated memory is still 142.6MB. Free memory was 66.0MB in the beginning and 64.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 355.05ms. Allocated memory is still 142.6MB. Free memory was 64.6MB in the beginning and 50.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 373.13ms. Allocated memory is still 142.6MB. Free memory was 50.5MB in the beginning and 92.0MB in the end (delta: -41.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.51ms. Allocated memory is still 142.6MB. Free memory was 92.0MB in the beginning and 91.1MB in the end (delta: 906.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet102 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1561. 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); [L1561] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1561] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741828:1073741827}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1562] CALL CWE191_Integer_Underflow__int_fscanf_sub_01_bad() [L1550] int data; [L1551] data = 0 [L1554] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1554]: 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, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 17:17:23,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 53188ff72b1ce95e48d25de4ce31cccbe9d156f2b92428a893dd412dbb1300ca --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:17:25,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:17:25,379 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-12-02 17:17:25,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:17:25,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:17:25,415 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:17:25,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:17:25,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:17:25,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:17:25,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:17:25,418 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:17:25,419 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:17:25,420 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:17:25,420 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:17:25,421 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:17:25,421 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:17:25,422 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:17:25,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:17:25,423 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:17:25,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:17:25,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:17:25,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:17:25,426 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:17:25,426 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:17:25,427 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 17:17:25,427 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:17:25,428 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 17:17:25,428 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:17:25,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:17:25,429 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:17:25,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:17:25,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:17:25,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:17:25,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:17:25,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:17:25,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:17:25,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:17:25,432 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:17:25,432 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:17:25,432 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:17:25,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:17:25,433 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:17:25,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:17:25,433 INFO L153 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53188ff72b1ce95e48d25de4ce31cccbe9d156f2b92428a893dd412dbb1300ca [2023-12-02 17:17:25,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:17:25,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:17:25,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:17:25,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:17:25,764 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:17:25,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i [2023-12-02 17:17:28,691 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:17:29,054 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:17:29,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i [2023-12-02 17:17:29,080 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data/52b4fdcf0/d03fb58bcfa1446e81438a4ec54ad502/FLAG8a93bb34f [2023-12-02 17:17:29,094 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/data/52b4fdcf0/d03fb58bcfa1446e81438a4ec54ad502 [2023-12-02 17:17:29,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:17:29,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:17:29,100 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:17:29,100 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:17:29,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:17:29,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:17:29" (1/1) ... [2023-12-02 17:17:29,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468d4164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:29, skipping insertion in model container [2023-12-02 17:17:29,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:17:29" (1/1) ... [2023-12-02 17:17:29,163 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:17:29,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:17:29,924 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:17:30,028 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:17:30,120 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:30,121 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:30,121 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:30,121 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 17:17:30,138 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:17:30,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30 WrapperNode [2023-12-02 17:17:30,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:17:30,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:17:30,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:17:30,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:17:30,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,173 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,198 INFO L138 Inliner]: procedures = 503, calls = 60, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2023-12-02 17:17:30,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:17:30,199 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:17:30,199 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:17:30,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:17:30,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,225 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,235 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:17:30,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:17:30,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:17:30,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:17:30,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (1/1) ... [2023-12-02 17:17:30,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:17:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:17:30,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:17:30,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:17:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 17:17:30,305 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 17:17:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:17:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 17:17:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 17:17:30,450 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:17:30,452 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:17:30,576 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:17:30,613 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:17:30,613 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:17:30,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:30 BoogieIcfgContainer [2023-12-02 17:17:30,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:17:30,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:17:30,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:17:30,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:17:30,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:17:29" (1/3) ... [2023-12-02 17:17:30,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d721c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:17:30, skipping insertion in model container [2023-12-02 17:17:30,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:17:30" (2/3) ... [2023-12-02 17:17:30,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d721c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:17:30, skipping insertion in model container [2023-12-02 17:17:30,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:30" (3/3) ... [2023-12-02 17:17:30,622 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fscanf_sub_01_bad.i [2023-12-02 17:17:30,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:17:30,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:17:30,676 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:17:30,681 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@38d7e1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:17:30,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:17:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 17:17:30,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 17:17:30,691 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:17:30,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:17:30,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-12-02 17:17:30,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:17:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 540512693, now seen corresponding path program 1 times [2023-12-02 17:17:30,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:17:30,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786040466] [2023-12-02 17:17:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:17:30,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:17:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:17:30,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 17:17:30,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 17:17:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:17:30,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:17:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:17:30,918 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 17:17:30,920 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:17:30,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-12-02 17:17:30,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-12-02 17:17:30,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:17:31,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 17:17:31,132 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:17:31,135 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:17:31,149 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-12-02 17:17:31,157 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 17:17:31,158 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 17:17:31,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:17:31 BoogieIcfgContainer [2023-12-02 17:17:31,165 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:17:31,166 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:17:31,166 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:17:31,166 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:17:31,167 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:17:30" (3/4) ... [2023-12-02 17:17:31,169 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:17:31,170 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:17:31,171 INFO L158 Benchmark]: Toolchain (without parser) took 2072.17ms. Allocated memory is still 111.1MB. Free memory was 83.9MB in the beginning and 45.4MB in the end (delta: 38.5MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2023-12-02 17:17:31,171 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:17:31,172 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1038.99ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 84.2MB in the end (delta: -638.3kB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2023-12-02 17:17:31,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.82ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 81.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:17:31,173 INFO L158 Benchmark]: Boogie Preprocessor took 36.38ms. Allocated memory is still 111.1MB. Free memory was 81.1MB in the beginning and 79.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:17:31,174 INFO L158 Benchmark]: RCFGBuilder took 377.94ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 63.4MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 17:17:31,174 INFO L158 Benchmark]: TraceAbstraction took 549.08ms. Allocated memory is still 111.1MB. Free memory was 62.8MB in the beginning and 46.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 17:17:31,175 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 111.1MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:17:31,178 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 71.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1038.99ms. Allocated memory is still 111.1MB. Free memory was 83.6MB in the beginning and 84.2MB in the end (delta: -638.3kB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.82ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 81.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.38ms. Allocated memory is still 111.1MB. Free memory was 81.1MB in the beginning and 79.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 377.94ms. Allocated memory is still 111.1MB. Free memory was 79.0MB in the beginning and 63.4MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 549.08ms. Allocated memory is still 111.1MB. Free memory was 62.8MB in the beginning and 46.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 111.1MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet100 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1554]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1561. 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); [L1561] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1561] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={13:12}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1562] CALL CWE191_Integer_Underflow__int_fscanf_sub_01_bad() [L1550] int data; [L1551] data = 0 [L1554] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={7:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1554] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={7:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1554]: 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, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 17:17:31,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bfe19ab-ea69-4ce1-9f9a-0e397843ba11/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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