./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_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_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91 --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 d64d2712d492162e95e1fa19a934e4cdeb5c33b78ef226bf74551bdc315f4229 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:58:10,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:58:10,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:58:10,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:58:10,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:58:10,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:58:10,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:58:10,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:58:10,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:58:10,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:58:10,791 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:58:10,792 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:58:10,793 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:58:10,793 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:58:10,794 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:58:10,795 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:58:10,796 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:58:10,796 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:58:10,797 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:58:10,798 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:58:10,798 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:58:10,799 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:58:10,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:58:10,801 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:58:10,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:58:10,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:58:10,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:58:10,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:58:10,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:58:10,804 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:58:10,805 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:58:10,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:58:10,806 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:58:10,807 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:58:10,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:58:10,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:58:10,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:10,809 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:58:10,810 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:58:10,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:58:10,811 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:58:10,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:58:10,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:58:10,813 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:58:10,813 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:58:10,814 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:58:10,814 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_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d64d2712d492162e95e1fa19a934e4cdeb5c33b78ef226bf74551bdc315f4229 [2023-11-24 23:58:11,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:58:11,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:58:11,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:58:11,210 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:58:11,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:58:11,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_bad.i [2023-11-24 23:58:14,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:58:14,928 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:58:14,929 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_bad.i [2023-11-24 23:58:14,961 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data/9b730f345/46167b7a5fcb4b31bc9eddab81ba755b/FLAGd25e761d2 [2023-11-24 23:58:14,980 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data/9b730f345/46167b7a5fcb4b31bc9eddab81ba755b [2023-11-24 23:58:14,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:58:14,985 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:58:14,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:14,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:58:14,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:58:14,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:14,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26627353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:14, skipping insertion in model container [2023-11-24 23:58:14,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:14" (1/1) ... [2023-11-24 23:58:15,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:16,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:16,294 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:58:16,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:16,613 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:16,613 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:16,614 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:16,614 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:16,614 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:16,623 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:58:16,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16 WrapperNode [2023-11-24 23:58:16,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:16,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:16,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:58:16,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:58:16,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,730 INFO L138 Inliner]: procedures = 503, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 65 [2023-11-24 23:58:16,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:16,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:58:16,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:58:16,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:58:16,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:58:16,768 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:58:16,768 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:58:16,768 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:58:16,769 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (1/1) ... [2023-11-24 23:58:16,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:16,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:16,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:58:16,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:58:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 23:58:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:58:16,873 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:58:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:58:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:58:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:58:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:58:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:58:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:58:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:58:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:58:17,044 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:58:17,047 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:58:17,224 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:58:17,275 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:58:17,275 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:58:17,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:17 BoogieIcfgContainer [2023-11-24 23:58:17,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:58:17,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:58:17,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:58:17,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:58:17,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:58:14" (1/3) ... [2023-11-24 23:58:17,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c5bb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:17, skipping insertion in model container [2023-11-24 23:58:17,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:16" (2/3) ... [2023-11-24 23:58:17,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c5bb34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:17, skipping insertion in model container [2023-11-24 23:58:17,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:17" (3/3) ... [2023-11-24 23:58:17,289 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_54_bad.i [2023-11-24 23:58:17,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:58:17,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:58:17,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:58:17,370 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;@5f6e4f9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:58:17,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:58:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:58:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:58:17,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:17,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:17,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-24 23:58:17,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -108921076, now seen corresponding path program 1 times [2023-11-24 23:58:17,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:58:17,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598964879] [2023-11-24 23:58:17,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:17,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:58:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:58:17,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:58:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:58:17,777 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-24 23:58:17,779 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:58:17,781 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-24 23:58:17,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-24 23:58:17,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:58:17,799 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:58:17,807 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:58:17,831 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet102 [2023-11-24 23:58:17,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:58:17 BoogieIcfgContainer [2023-11-24 23:58:17,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:58:17,848 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:58:17,848 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:58:17,849 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:58:17,849 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:17" (3/4) ... [2023-11-24 23:58:17,851 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:58:17,852 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:58:17,855 INFO L158 Benchmark]: Toolchain (without parser) took 2868.75ms. Allocated memory was 132.1MB in the beginning and 199.2MB in the end (delta: 67.1MB). Free memory was 92.2MB in the beginning and 153.2MB in the end (delta: -60.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-11-24 23:58:17,856 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory was 76.6MB in the beginning and 76.5MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:17,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1638.66ms. Allocated memory was 132.1MB in the beginning and 199.2MB in the end (delta: 67.1MB). Free memory was 91.9MB in the beginning and 131.8MB in the end (delta: -39.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2023-11-24 23:58:17,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.77ms. Allocated memory is still 199.2MB. Free memory was 131.2MB in the beginning and 128.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:58:17,863 INFO L158 Benchmark]: Boogie Preprocessor took 35.35ms. Allocated memory is still 199.2MB. Free memory was 128.3MB in the beginning and 127.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:17,864 INFO L158 Benchmark]: RCFGBuilder took 511.79ms. Allocated memory is still 199.2MB. Free memory was 127.0MB in the beginning and 111.6MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 23:58:17,864 INFO L158 Benchmark]: TraceAbstraction took 563.71ms. Allocated memory is still 199.2MB. Free memory was 110.9MB in the beginning and 153.2MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:17,866 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 199.2MB. Free memory is still 153.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:17,874 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 132.1MB. Free memory was 76.6MB in the beginning and 76.5MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1638.66ms. Allocated memory was 132.1MB in the beginning and 199.2MB in the end (delta: 67.1MB). Free memory was 91.9MB in the beginning and 131.8MB in the end (delta: -39.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.77ms. Allocated memory is still 199.2MB. Free memory was 131.2MB in the beginning and 128.3MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.35ms. Allocated memory is still 199.2MB. Free memory was 128.3MB in the beginning and 127.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 511.79ms. Allocated memory is still 199.2MB. Free memory was 127.0MB in the beginning and 111.6MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 563.71ms. Allocated memory is still 199.2MB. Free memory was 110.9MB in the beginning and 153.2MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 199.2MB. Free memory is still 153.2MB. 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~nondet102 - 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: 1592]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of large string literal at line 1569. 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); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741826, argc=1073741826, argv={1073741829:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_sub_54e_badSink(data) [L1592] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1592]: 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, 16 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=16occurred 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 [2023-11-24 23:58:17,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/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_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91 --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 d64d2712d492162e95e1fa19a934e4cdeb5c33b78ef226bf74551bdc315f4229 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:58:20,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:58:20,687 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-24 23:58:20,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:58:20,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:58:20,739 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:58:20,740 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:58:20,740 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:58:20,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:58:20,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:58:20,746 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:58:20,747 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:58:20,747 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:58:20,749 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:58:20,749 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:58:20,750 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:58:20,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:58:20,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:58:20,752 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:58:20,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:58:20,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:58:20,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:58:20,754 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:58:20,754 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:58:20,755 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:58:20,755 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:58:20,756 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:58:20,756 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:58:20,756 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:58:20,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:58:20,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:58:20,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:58:20,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:58:20,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:20,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:58:20,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:58:20,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:58:20,760 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:58:20,760 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:58:20,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:58:20,761 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:58:20,762 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:58:20,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:58:20,762 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_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d64d2712d492162e95e1fa19a934e4cdeb5c33b78ef226bf74551bdc315f4229 [2023-11-24 23:58:21,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:58:21,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:58:21,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:58:21,226 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:58:21,227 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:58:21,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_bad.i [2023-11-24 23:58:24,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:58:24,901 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:58:24,901 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_54_bad.i [2023-11-24 23:58:24,929 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data/c41cb609e/7077f47bfafe47429a85c64f001ee176/FLAG201c2d9e0 [2023-11-24 23:58:24,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/data/c41cb609e/7077f47bfafe47429a85c64f001ee176 [2023-11-24 23:58:24,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:58:24,954 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:58:24,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:24,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:58:24,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:58:24,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:24" (1/1) ... [2023-11-24 23:58:24,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a292ba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:24, skipping insertion in model container [2023-11-24 23:58:24,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:58:24" (1/1) ... [2023-11-24 23:58:25,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:58:26,264 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:26,278 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:58:26,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:58:26,515 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:26,516 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:26,516 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:26,516 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:26,517 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:58:26,524 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:58:26,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26 WrapperNode [2023-11-24 23:58:26,525 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:58:26,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:26,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:58:26,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:58:26,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,599 INFO L138 Inliner]: procedures = 508, calls = 67, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 64 [2023-11-24 23:58:26,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:58:26,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:58:26,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:58:26,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:58:26,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:58:26,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:58:26,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:58:26,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:58:26,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (1/1) ... [2023-11-24 23:58:26,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:58:26,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:58:26,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:58:26,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:58:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-24 23:58:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:58:26,750 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:58:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:58:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:58:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:58:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:58:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:58:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:58:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:58:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-24 23:58:26,975 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:58:26,978 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:58:27,226 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:58:27,273 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:58:27,273 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:58:27,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:27 BoogieIcfgContainer [2023-11-24 23:58:27,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:58:27,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:58:27,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:58:27,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:58:27,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:58:24" (1/3) ... [2023-11-24 23:58:27,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32db6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:27, skipping insertion in model container [2023-11-24 23:58:27,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:58:26" (2/3) ... [2023-11-24 23:58:27,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d32db6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:58:27, skipping insertion in model container [2023-11-24 23:58:27,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:27" (3/3) ... [2023-11-24 23:58:27,283 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_54_bad.i [2023-11-24 23:58:27,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:58:27,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 23:58:27,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:58:27,358 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;@4234fde3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:58:27,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 23:58:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-24 23:58:27,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:58:27,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:58:27,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:58:27,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-24 23:58:27,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:58:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -932927004, now seen corresponding path program 1 times [2023-11-24 23:58:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:58:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222894935] [2023-11-24 23:58:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:58:27,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:58:27,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:58:27,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-24 23:58:27,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-24 23:58:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:58:27,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:58:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:58:27,648 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-24 23:58:27,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 23:58:27,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-24 23:58:27,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-24 23:58:27,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:58:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 23:58:27,862 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-24 23:58:27,867 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 23:58:27,903 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet100 [2023-11-24 23:58:27,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 11:58:27 BoogieIcfgContainer [2023-11-24 23:58:27,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 23:58:27,923 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:58:27,924 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:58:27,924 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:58:27,925 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:58:27" (3/4) ... [2023-11-24 23:58:27,927 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:58:27,929 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:58:27,930 INFO L158 Benchmark]: Toolchain (without parser) took 2976.19ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 58.1MB in the end (delta: 22.9MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2023-11-24 23:58:27,931 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:27,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1568.64ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 70.2MB in the end (delta: 10.8MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-11-24 23:58:27,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.10ms. Allocated memory is still 109.1MB. Free memory was 70.2MB in the beginning and 67.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:58:27,941 INFO L158 Benchmark]: Boogie Preprocessor took 44.91ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:58:27,942 INFO L158 Benchmark]: RCFGBuilder took 628.32ms. Allocated memory is still 109.1MB. Free memory was 64.5MB in the beginning and 76.6MB in the end (delta: -12.0MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-11-24 23:58:27,945 INFO L158 Benchmark]: TraceAbstraction took 640.65ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 58.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-24 23:58:27,945 INFO L158 Benchmark]: Witness Printer took 5.48ms. Allocated memory is still 109.1MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:58:27,955 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 77.6MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1568.64ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 70.2MB in the end (delta: 10.8MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.10ms. Allocated memory is still 109.1MB. Free memory was 70.2MB in the beginning and 67.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.91ms. Allocated memory is still 109.1MB. Free memory was 67.1MB in the beginning and 65.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 628.32ms. Allocated memory is still 109.1MB. Free memory was 64.5MB in the beginning and 76.6MB in the end (delta: -12.0MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 640.65ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 58.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 5.48ms. Allocated memory is still 109.1MB. Free memory is still 58.1MB. 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 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: 1592]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1557, overapproximation of large string literal at line 1569. 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); [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={4:0}] [L1414] COND TRUE line != ((void *)0) [L1569] 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] [L1570] CALL CWE191_Integer_Underflow__int_fgets_sub_54_bad() [L1551] int data; [L1552] data = 0 [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1555] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1557] EXPR data = atoi(inputBuffer) [L1554] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1553-L1563] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1564] CALL CWE191_Integer_Underflow__int_fgets_sub_54b_badSink(data) [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_54c_badSink(data) [L1582] CALL CWE191_Integer_Underflow__int_fgets_sub_54d_badSink(data) [L1587] CALL CWE191_Integer_Underflow__int_fgets_sub_54e_badSink(data) [L1592] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(data)=-2147483648, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1592]: 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, 18 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=18occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-24 23:58:27,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82fe4268-0c0b-47f5-8cd5-cdfeb91fe431/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample