./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:12,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:12,453 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-25 00:02:12,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:12,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:12,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:12,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:12,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:12,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:12,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:12,490 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:12,491 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:12,491 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:12,492 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:02:12,493 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:12,493 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:12,494 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:02:12,494 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:02:12,495 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:12,496 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:02:12,496 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:02:12,497 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:02:12,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:12,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:12,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:02:12,500 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:12,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:12,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:12,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:12,502 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:02:12,502 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:02:12,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:12,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:12,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:12,504 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:12,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:12,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:12,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:12,506 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:12,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:12,507 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:02:12,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:02:12,512 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:12,512 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:12,513 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:12,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:12,513 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_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 [2023-11-25 00:02:12,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:12,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:12,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:12,804 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:12,805 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:12,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-25 00:02:15,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:16,407 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:16,408 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-25 00:02:16,438 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data/e75c966d5/bf7871ce89ee423fa167315e9aae24d0/FLAG2fc5beed1 [2023-11-25 00:02:16,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data/e75c966d5/bf7871ce89ee423fa167315e9aae24d0 [2023-11-25 00:02:16,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:16,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:16,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:16,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:16,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:16,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:16" (1/1) ... [2023-11-25 00:02:16,468 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55241dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:16, skipping insertion in model container [2023-11-25 00:02:16,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:16" (1/1) ... [2023-11-25 00:02:16,556 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:17,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:17,564 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:17,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:17,928 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:17,929 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:17,929 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:17,929 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:17,929 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:17,937 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:17,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17 WrapperNode [2023-11-25 00:02:17,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:17,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:17,940 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:17,940 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:17,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:17,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,013 INFO L138 Inliner]: procedures = 500, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2023-11-25 00:02:18,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:18,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:18,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:18,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:18,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,029 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,029 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,039 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,045 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,048 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:18,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:18,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:18,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:18,052 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (1/1) ... [2023-11-25 00:02:18,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:18,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:18,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:18,159 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-25 00:02:18,160 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-25 00:02:18,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-25 00:02:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:02:18,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:02:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:18,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:18,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:02:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-25 00:02:18,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:02:18,386 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:18,388 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:18,565 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:18,614 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:18,614 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:02:18,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:18 BoogieIcfgContainer [2023-11-25 00:02:18,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:18,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:18,620 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:18,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:18,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:16" (1/3) ... [2023-11-25 00:02:18,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc37125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:18, skipping insertion in model container [2023-11-25 00:02:18,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:17" (2/3) ... [2023-11-25 00:02:18,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc37125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:18, skipping insertion in model container [2023-11-25 00:02:18,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:18" (3/3) ... [2023-11-25 00:02:18,631 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-25 00:02:18,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:18,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:02:18,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:18,714 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;@1aaa6263, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:18,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:02:18,718 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) [2023-11-25 00:02:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-25 00:02:18,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:18,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:18,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:02:18,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:18,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1025861273, now seen corresponding path program 1 times [2023-11-25 00:02:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:02:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648402116] [2023-11-25 00:02:18,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:18,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:02:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:02:18,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:02:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:02:18,955 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-25 00:02:18,957 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:02:18,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-25 00:02:18,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-25 00:02:18,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:02:18,965 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:02:18,969 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:02:18,985 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-11-25 00:02:18,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:02:18 BoogieIcfgContainer [2023-11-25 00:02:18,994 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:02:18,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:02:18,995 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:02:18,995 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:02:18,996 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:18" (3/4) ... [2023-11-25 00:02:18,998 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:02:18,999 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:02:19,000 INFO L158 Benchmark]: Toolchain (without parser) took 2541.37ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 113.9MB in the beginning and 105.1MB in the end (delta: 8.8MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2023-11-25 00:02:19,001 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 151.0MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:19,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1478.84ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 113.9MB in the beginning and 143.8MB in the end (delta: -29.9MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2023-11-25 00:02:19,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.34ms. Allocated memory is still 203.4MB. Free memory was 143.8MB in the beginning and 140.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:02:19,003 INFO L158 Benchmark]: Boogie Preprocessor took 34.14ms. Allocated memory is still 203.4MB. Free memory was 140.7MB in the beginning and 138.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:02:19,004 INFO L158 Benchmark]: RCFGBuilder took 566.99ms. Allocated memory is still 203.4MB. Free memory was 138.7MB in the beginning and 123.7MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-25 00:02:19,004 INFO L158 Benchmark]: TraceAbstraction took 374.35ms. Allocated memory is still 203.4MB. Free memory was 122.8MB in the beginning and 106.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-25 00:02:19,005 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 203.4MB. Free memory was 106.0MB in the beginning and 105.1MB in the end (delta: 928.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:19,009 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 151.0MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1478.84ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 113.9MB in the beginning and 143.8MB in the end (delta: -29.9MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.34ms. Allocated memory is still 203.4MB. Free memory was 143.8MB in the beginning and 140.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.14ms. Allocated memory is still 203.4MB. Free memory was 140.7MB in the beginning and 138.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.99ms. Allocated memory is still 203.4MB. Free memory was 138.7MB in the beginning and 123.7MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 374.35ms. Allocated memory is still 203.4MB. Free memory was 122.8MB in the beginning and 106.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 203.4MB. Free memory was 106.0MB in the beginning and 105.1MB in the end (delta: 928.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet103 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554, overapproximation of large string literal at line 1576. 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); [L1576] 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) [L1576] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=1073741827, argc=1073741827, argv={1073741830:1073741828}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] EXPR data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1550-L1560] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1561] return data; [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: 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: 0.3s, 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=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, 0.0s 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 [2023-11-25 00:02:19,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:02:21,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:02:21,935 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Bitvector.epf [2023-11-25 00:02:21,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:02:21,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:02:21,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:02:21,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:02:21,993 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:02:21,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:02:21,999 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:02:22,000 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:02:22,001 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:02:22,002 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:02:22,003 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:02:22,004 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:02:22,004 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:02:22,005 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:02:22,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:02:22,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:02:22,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:02:22,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:02:22,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:02:22,009 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:02:22,010 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:02:22,010 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:02:22,010 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:02:22,011 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:02:22,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:02:22,012 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:02:22,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:02:22,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:02:22,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:02:22,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:02:22,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:22,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:02:22,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:02:22,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:02:22,016 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:02:22,016 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:02:22,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:02:22,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:02:22,018 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:02:22,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:02:22,018 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_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a7913009f557bb817682ec51a8256f9af3209cb5eeff0346609b07f1bcced57 [2023-11-25 00:02:22,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:02:22,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:02:22,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:02:22,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:02:22,481 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:02:22,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-25 00:02:25,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:02:26,285 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:02:26,286 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-25 00:02:26,327 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data/5814f505b/49e9cda3ec464b4ab3d05bc012c06013/FLAG6b22f2bcb [2023-11-25 00:02:26,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/data/5814f505b/49e9cda3ec464b4ab3d05bc012c06013 [2023-11-25 00:02:26,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:02:26,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:02:26,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:26,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:02:26,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:02:26,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:26" (1/1) ... [2023-11-25 00:02:26,362 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50db5bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:26, skipping insertion in model container [2023-11-25 00:02:26,362 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:02:26" (1/1) ... [2023-11-25 00:02:26,451 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:02:27,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:27,476 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:02:27,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:02:27,852 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:27,852 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:27,852 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:27,852 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:27,853 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:02:27,860 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:02:27,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27 WrapperNode [2023-11-25 00:02:27,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:02:27,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:27,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:02:27,863 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:02:27,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,917 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,957 INFO L138 Inliner]: procedures = 505, calls = 64, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 62 [2023-11-25 00:02:27,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:02:27,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:02:27,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:02:27,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:02:27,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:27,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:28,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:28,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:28,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:02:28,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:02:28,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:02:28,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:02:28,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (1/1) ... [2023-11-25 00:02:28,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:02:28,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:02:28,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:02:28,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:02:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-25 00:02:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-25 00:02:28,095 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-25 00:02:28,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:02:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:02:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:02:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:02:28,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:02:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:02:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-25 00:02:28,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-11-25 00:02:28,293 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:02:28,295 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:02:28,488 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:02:28,533 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:02:28,533 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-25 00:02:28,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:28 BoogieIcfgContainer [2023-11-25 00:02:28,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:02:28,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:02:28,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:02:28,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:02:28,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:02:26" (1/3) ... [2023-11-25 00:02:28,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4f616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:28, skipping insertion in model container [2023-11-25 00:02:28,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:02:27" (2/3) ... [2023-11-25 00:02:28,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e4f616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:02:28, skipping insertion in model container [2023-11-25 00:02:28,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:28" (3/3) ... [2023-11-25 00:02:28,547 INFO L112 eAbstractionObserver]: Analyzing ICFG CWE191_Integer_Underflow__int_fgets_sub_42_bad.i [2023-11-25 00:02:28,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:02:28,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-25 00:02:28,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:02:28,633 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;@744abe2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:02:28,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-25 00:02:28,637 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) [2023-11-25 00:02:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:02:28,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:02:28,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:02:28,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-11-25 00:02:28,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:02:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1799561464, now seen corresponding path program 1 times [2023-11-25 00:02:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:02:28,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406081591] [2023-11-25 00:02:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:02:28,673 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 [2023-11-25 00:02:28,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:02:28,675 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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) [2023-11-25 00:02:28,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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 [2023-11-25 00:02:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:02:28,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-25 00:02:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-25 00:02:29,009 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-25 00:02:29,012 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-25 00:02:29,013 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2023-11-25 00:02:29,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2023-11-25 00:02:29,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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 [2023-11-25 00:02:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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 [2023-11-25 00:02:29,230 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-25 00:02:29,235 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-25 00:02:29,266 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet101 [2023-11-25 00:02:29,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 12:02:29 BoogieIcfgContainer [2023-11-25 00:02:29,275 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-25 00:02:29,276 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-25 00:02:29,276 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-25 00:02:29,277 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-25 00:02:29,277 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:02:28" (3/4) ... [2023-11-25 00:02:29,279 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-25 00:02:29,280 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-25 00:02:29,282 INFO L158 Benchmark]: Toolchain (without parser) took 2930.52ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 50.1MB in the beginning and 66.1MB in the end (delta: -16.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2023-11-25 00:02:29,282 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:29,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1507.38ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 49.8MB in the beginning and 71.7MB in the end (delta: -21.8MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2023-11-25 00:02:29,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.13ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 68.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:02:29,292 INFO L158 Benchmark]: Boogie Preprocessor took 49.17ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 66.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-25 00:02:29,294 INFO L158 Benchmark]: RCFGBuilder took 526.94ms. Allocated memory is still 102.8MB. Free memory was 66.3MB in the beginning and 49.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-25 00:02:29,295 INFO L158 Benchmark]: TraceAbstraction took 737.76ms. Allocated memory is still 102.8MB. Free memory was 48.6MB in the beginning and 66.8MB in the end (delta: -18.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:29,296 INFO L158 Benchmark]: Witness Printer took 4.44ms. Allocated memory is still 102.8MB. Free memory was 66.8MB in the beginning and 66.1MB in the end (delta: 628.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:02:29,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 53.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1507.38ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 49.8MB in the beginning and 71.7MB in the end (delta: -21.8MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.13ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 68.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.17ms. Allocated memory is still 102.8MB. Free memory was 68.4MB in the beginning and 66.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.94ms. Allocated memory is still 102.8MB. Free memory was 66.3MB in the beginning and 49.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 737.76ms. Allocated memory is still 102.8MB. Free memory was 48.6MB in the beginning and 66.8MB in the end (delta: -18.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.44ms. Allocated memory is still 102.8MB. Free memory was 66.8MB in the beginning and 66.1MB in the end (delta: 628.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet101 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1569]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1554, overapproximation of large string literal at line 1576. 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); [L1576] 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) [L1576] 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] [L1577] CALL CWE191_Integer_Underflow__int_fgets_sub_42_bad() [L1565] int data; [L1566] data = 0 [L1567] CALL, EXPR badSource(data) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1552] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1554] EXPR data = atoi(inputBuffer) [L1551] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1550-L1560] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } [L1561] return data; [L1567] RET, EXPR badSource(data) [L1567] data = badSource(data) [L1569] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] - UnprovableResult [Line: 1569]: 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: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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 [2023-11-25 00:02:29,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b35c7d5-d21a-4b00-bd42-07d8468f3e50/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