./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_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_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ae52c5d582497291c525bb7e5d6f537c4a681411b48fa6449cbc12b3d30c90d5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 01:37:18,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 01:37:18,991 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-03 01:37:18,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-03 01:37:18,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-03 01:37:19,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 01:37:19,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 01:37:19,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 01:37:19,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 01:37:19,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 01:37:19,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 01:37:19,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 01:37:19,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-03 01:37:19,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 01:37:19,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 01:37:19,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 01:37:19,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 01:37:19,027 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 01:37:19,027 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 01:37:19,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 01:37:19,028 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 01:37:19,029 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 01:37:19,030 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 01:37:19,030 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 01:37:19,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 01:37:19,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 01:37:19,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 01:37:19,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 01:37:19,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 01:37:19,033 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-03 01:37:19,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-03 01:37:19,033 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 01:37:19,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae52c5d582497291c525bb7e5d6f537c4a681411b48fa6449cbc12b3d30c90d5 [2023-12-03 01:37:19,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 01:37:19,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 01:37:19,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 01:37:19,297 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 01:37:19,298 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 01:37:19,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_bad.i [2023-12-03 01:37:22,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 01:37:22,377 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 01:37:22,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_bad.i [2023-12-03 01:37:22,400 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data/f3c173332/6447a8fda021422d91f7e18793e1fe41/FLAG65f31a609 [2023-12-03 01:37:22,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data/f3c173332/6447a8fda021422d91f7e18793e1fe41 [2023-12-03 01:37:22,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 01:37:22,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 01:37:22,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 01:37:22,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 01:37:22,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 01:37:22,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:37:22" (1/1) ... [2023-12-03 01:37:22,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e4bb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:22, skipping insertion in model container [2023-12-03 01:37:22,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:37:22" (1/1) ... [2023-12-03 01:37:22,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 01:37:23,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 01:37:23,260 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 01:37:23,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 01:37:23,444 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:23,445 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:23,445 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:23,445 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:23,445 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:23,451 INFO L206 MainTranslator]: Completed translation [2023-12-03 01:37:23,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23 WrapperNode [2023-12-03 01:37:23,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 01:37:23,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 01:37:23,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 01:37:23,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 01:37:23,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,523 INFO L138 Inliner]: procedures = 499, calls = 68, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-12-03 01:37:23,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 01:37:23,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 01:37:23,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 01:37:23,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 01:37:23,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,549 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 01:37:23,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 01:37:23,555 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 01:37:23,555 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 01:37:23,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:23" (1/1) ... [2023-12-03 01:37:23,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 01:37:23,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 01:37:23,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 01:37:23,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 01:37:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-12-03 01:37:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-12-03 01:37:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-03 01:37:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2023-12-03 01:37:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2023-12-03 01:37:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-03 01:37:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-03 01:37:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 01:37:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-03 01:37:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 01:37:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 01:37:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 01:37:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 01:37:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-03 01:37:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-03 01:37:23,811 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 01:37:23,814 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 01:37:23,963 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 01:37:24,002 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 01:37:24,002 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 01:37:24,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:37:24 BoogieIcfgContainer [2023-12-03 01:37:24,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 01:37:24,006 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 01:37:24,006 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 01:37:24,016 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 01:37:24,017 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:37:24" (1/1) ... [2023-12-03 01:37:24,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 01:37:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 38 states and 46 transitions. [2023-12-03 01:37:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-12-03 01:37:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-03 01:37:24,091 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:37:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 42 states and 53 transitions. [2023-12-03 01:37:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-12-03 01:37:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-03 01:37:24,477 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:24,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:37:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 43 states and 54 transitions. [2023-12-03 01:37:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2023-12-03 01:37:24,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-03 01:37:24,593 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:37:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 45 states and 56 transitions. [2023-12-03 01:37:24,715 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-12-03 01:37:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-03 01:37:24,716 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:24,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:37:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:24,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 46 states and 57 transitions. [2023-12-03 01:37:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2023-12-03 01:37:24,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-03 01:37:24,818 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:24,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:37:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 51 states and 65 transitions. [2023-12-03 01:37:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-12-03 01:37:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-03 01:37:25,039 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:25,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-03 01:37:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:25,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 01:37:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:25,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 01:37:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:25,200 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2023-12-03 01:37:25,230 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet107 [2023-12-03 01:37:25,234 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret98 could not be translated [2023-12-03 01:37:25,235 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret102 could not be translated [2023-12-03 01:37:25,236 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post103 could not be translated [2023-12-03 01:37:25,241 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 01:37:25 ImpRootNode [2023-12-03 01:37:25,241 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 01:37:25,242 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 01:37:25,242 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 01:37:25,242 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 01:37:25,243 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:37:24" (3/4) ... [2023-12-03 01:37:25,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 01:37:25,246 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 01:37:25,247 INFO L158 Benchmark]: Toolchain (without parser) took 2830.58ms. Allocated memory is still 157.3MB. Free memory was 118.8MB in the beginning and 87.2MB in the end (delta: 31.6MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2023-12-03 01:37:25,248 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 111.1MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:37:25,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1034.62ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 54.5MB in the end (delta: 63.6MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-12-03 01:37:25,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.74ms. Allocated memory is still 157.3MB. Free memory was 54.5MB in the beginning and 123.7MB in the end (delta: -69.2MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2023-12-03 01:37:25,250 INFO L158 Benchmark]: Boogie Preprocessor took 29.90ms. Allocated memory is still 157.3MB. Free memory was 123.7MB in the beginning and 122.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:37:25,251 INFO L158 Benchmark]: RCFGBuilder took 449.53ms. Allocated memory is still 157.3MB. Free memory was 122.5MB in the beginning and 106.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-03 01:37:25,251 INFO L158 Benchmark]: CodeCheck took 1235.80ms. Allocated memory is still 157.3MB. Free memory was 105.7MB in the beginning and 87.2MB in the end (delta: 18.5MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2023-12-03 01:37:25,252 INFO L158 Benchmark]: Witness Printer took 4.37ms. Allocated memory is still 157.3MB. Free memory is still 87.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:37:25,255 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 4 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 163 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131 IncrementalHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 124 mSDtfsCounter, 131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 590 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1595. 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); [L1595] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1595] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=18, argc=18, argv={13:28}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1596] CALL CWE190_Integer_Overflow__int_fgets_postinc_12_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] data++ VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 111.1MB. Free memory was 80.8MB in the beginning and 80.7MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1034.62ms. Allocated memory is still 157.3MB. Free memory was 118.1MB in the beginning and 54.5MB in the end (delta: 63.6MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.74ms. Allocated memory is still 157.3MB. Free memory was 54.5MB in the beginning and 123.7MB in the end (delta: -69.2MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.90ms. Allocated memory is still 157.3MB. Free memory was 123.7MB in the beginning and 122.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 449.53ms. Allocated memory is still 157.3MB. Free memory was 122.5MB in the beginning and 106.0MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 1235.80ms. Allocated memory is still 157.3MB. Free memory was 105.7MB in the beginning and 87.2MB in the end (delta: 18.5MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * Witness Printer took 4.37ms. Allocated memory is still 157.3MB. Free memory is still 87.2MB. 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~nondet107 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret102 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post103 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-03 01:37:25,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9 --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 Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ae52c5d582497291c525bb7e5d6f537c4a681411b48fa6449cbc12b3d30c90d5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-03 01:37:27,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-03 01:37:27,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-12-03 01:37:27,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-03 01:37:27,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-03 01:37:27,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-03 01:37:27,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-03 01:37:27,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-03 01:37:27,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-03 01:37:27,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-03 01:37:27,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-03 01:37:27,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-03 01:37:27,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-03 01:37:27,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-03 01:37:27,328 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-03 01:37:27,328 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-03 01:37:27,329 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-03 01:37:27,329 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-03 01:37:27,330 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-03 01:37:27,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-03 01:37:27,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-03 01:37:27,332 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-03 01:37:27,333 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-03 01:37:27,333 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-03 01:37:27,333 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:27,334 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-03 01:37:27,334 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-03 01:37:27,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 01:37:27,335 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-03 01:37:27,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-03 01:37:27,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-03 01:37:27,337 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-03 01:37:27,337 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:27,337 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-03 01:37:27,338 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-03 01:37:27,338 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-03 01:37:27,338 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_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae52c5d582497291c525bb7e5d6f537c4a681411b48fa6449cbc12b3d30c90d5 [2023-12-03 01:37:27,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-03 01:37:27,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-03 01:37:27,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-03 01:37:27,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-03 01:37:27,685 INFO L274 PluginConnector]: CDTParser initialized [2023-12-03 01:37:27,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_bad.i [2023-12-03 01:37:30,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-03 01:37:30,876 INFO L384 CDTParser]: Found 1 translation units. [2023-12-03 01:37:30,877 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/sv-benchmarks/c/Juliet_Test/CWE190_Integer_Overflow__int_fgets_postinc_12_bad.i [2023-12-03 01:37:30,903 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data/413454a78/59ab63cdc7da470cb1bcc832f90d14e9/FLAG3d41b0ebf [2023-12-03 01:37:30,918 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/data/413454a78/59ab63cdc7da470cb1bcc832f90d14e9 [2023-12-03 01:37:30,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-03 01:37:30,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-03 01:37:30,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-03 01:37:30,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-03 01:37:30,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-03 01:37:30,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:37:30" (1/1) ... [2023-12-03 01:37:30,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3276be1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:30, skipping insertion in model container [2023-12-03 01:37:30,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:37:30" (1/1) ... [2023-12-03 01:37:30,992 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-03 01:37:31,807 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 01:37:31,841 INFO L202 MainTranslator]: Completed pre-run [2023-12-03 01:37:31,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-03 01:37:32,091 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:32,091 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:32,091 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:32,091 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:32,092 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-12-03 01:37:32,100 INFO L206 MainTranslator]: Completed translation [2023-12-03 01:37:32,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32 WrapperNode [2023-12-03 01:37:32,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-03 01:37:32,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-03 01:37:32,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-03 01:37:32,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-03 01:37:32,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,161 INFO L138 Inliner]: procedures = 504, calls = 68, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2023-12-03 01:37:32,161 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-03 01:37:32,162 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-03 01:37:32,162 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-03 01:37:32,162 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-03 01:37:32,169 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,189 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,191 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-03 01:37:32,197 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-03 01:37:32,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-03 01:37:32,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-03 01:37:32,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-03 01:37:32,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-03 01:37:32,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-03 01:37:32,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-03 01:37:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-12-03 01:37:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-12-03 01:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-12-03 01:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure globalReturnsTrueOrFalse [2023-12-03 01:37:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure globalReturnsTrueOrFalse [2023-12-03 01:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-03 01:37:32,272 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-03 01:37:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-03 01:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-03 01:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-03 01:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-03 01:37:32,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-03 01:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-03 01:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-03 01:37:32,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-03 01:37:32,452 INFO L241 CfgBuilder]: Building ICFG [2023-12-03 01:37:32,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-03 01:37:32,631 INFO L282 CfgBuilder]: Performing block encoding [2023-12-03 01:37:32,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-03 01:37:32,676 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-03 01:37:32,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:37:32 BoogieIcfgContainer [2023-12-03 01:37:32,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-03 01:37:32,679 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-03 01:37:32,679 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-03 01:37:32,690 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-03 01:37:32,691 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:37:32" (1/1) ... [2023-12-03 01:37:32,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-03 01:37:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 36 states and 44 transitions. [2023-12-03 01:37:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-12-03 01:37:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-03 01:37:32,770 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:32,771 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:32,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 01:37:32,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 01:37:32,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-03 01:37:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:32,957 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 01:37:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:32,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-03 01:37:32,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 01:37:33,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:33,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-03 01:37:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 35 states and 43 transitions. [2023-12-03 01:37:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2023-12-03 01:37:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-03 01:37:33,060 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:33,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 01:37:33,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 01:37:33,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2023-12-03 01:37:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:33,223 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 01:37:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:33,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-03 01:37:33,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 01:37:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:33,316 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2023-12-03 01:37:33,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2023-12-03 01:37:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 39 states and 50 transitions. [2023-12-03 01:37:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-12-03 01:37:33,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-03 01:37:33,373 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:33,373 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:33,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 01:37:33,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 01:37:33,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-03 01:37:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:33,478 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 01:37:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:33,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-03 01:37:33,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 01:37:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:33,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-03 01:37:33,512 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (4)] Exception during sending of exit command (exit): Broken pipe [2023-12-03 01:37:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 38 states and 49 transitions. [2023-12-03 01:37:33,519 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2023-12-03 01:37:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-03 01:37:33,520 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:33,521 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:33,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 01:37:33,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 01:37:33,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-03 01:37:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:33,668 ERROR L592 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2023-12-03 01:37:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-03 01:37:33,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-03 01:37:33,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-03 01:37:33,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-03 01:37:33,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-03 01:37:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-03 01:37:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 41 states and 52 transitions. [2023-12-03 01:37:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2023-12-03 01:37:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-03 01:37:33,788 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-03 01:37:33,788 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-03 01:37:33,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-03 01:37:33,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-03 01:37:33,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-03 01:37:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:33,986 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 01:37:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:34,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-03 01:37:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-03 01:37:34,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-03 01:37:34,282 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 5 iterations. [2023-12-03 01:37:34,310 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet105 [2023-12-03 01:37:34,313 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret96 could not be translated [2023-12-03 01:37:34,315 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret100 could not be translated [2023-12-03 01:37:34,315 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated [2023-12-03 01:37:34,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 03.12 01:37:34 ImpRootNode [2023-12-03 01:37:34,320 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-03 01:37:34,320 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-03 01:37:34,320 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-03 01:37:34,321 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-03 01:37:34,321 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:37:32" (3/4) ... [2023-12-03 01:37:34,323 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-03 01:37:34,324 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-03 01:37:34,325 INFO L158 Benchmark]: Toolchain (without parser) took 3402.15ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 84.1MB in the beginning and 89.3MB in the end (delta: -5.2MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2023-12-03 01:37:34,325 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 71.3MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:37:34,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1176.96ms. Allocated memory is still 111.1MB. Free memory was 83.8MB in the beginning and 78.9MB in the end (delta: 4.9MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2023-12-03 01:37:34,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.09ms. Allocated memory is still 111.1MB. Free memory was 78.9MB in the beginning and 75.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-03 01:37:34,327 INFO L158 Benchmark]: Boogie Preprocessor took 34.86ms. Allocated memory is still 111.1MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-03 01:37:34,328 INFO L158 Benchmark]: RCFGBuilder took 480.96ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 54.3MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-03 01:37:34,328 INFO L158 Benchmark]: CodeCheck took 1640.89ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 54.3MB in the beginning and 89.3MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:37:34,329 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 134.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-03 01:37:34,332 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 4 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 178 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 100 mSDtfsCounter, 66 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 452 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 SizeOfPredicates, 2 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - UnprovableResult [Line: 1573]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of atoi at line 1558, overapproximation of large string literal at line 1595. 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); [L1595] 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={5:0}] [L1414] COND TRUE line != ((void *)0) [L1595] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1596] CALL CWE190_Integer_Overflow__int_fgets_postinc_12_bad() [L1550] int data; [L1551] data = 0 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1552] RET globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=0, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1552] COND TRUE globalReturnsTrueOrFalse() [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1556] COND TRUE, EXPR fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0) [L1558] EXPR data = atoi(inputBuffer) [L1555] char inputBuffer[(3 * sizeof(data) + 2)] = ""; [L1554-L1564] { char inputBuffer[(3 * sizeof(data) + 2)] = ""; if (fgets(inputBuffer, (3 * sizeof(data) + 2), stdin) != ((void *)0)) { data = atoi(inputBuffer); } else { printLine("fgets() failed."); } } VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] CALL globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1520] return (rand() % 2); [L1570] RET globalReturnsTrueOrFalse() VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1570] COND TRUE globalReturnsTrueOrFalse() [L1573] data++ VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=2147483647, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 71.3MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1176.96ms. Allocated memory is still 111.1MB. Free memory was 83.8MB in the beginning and 78.9MB in the end (delta: 4.9MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.09ms. Allocated memory is still 111.1MB. Free memory was 78.9MB in the beginning and 75.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.86ms. Allocated memory is still 111.1MB. Free memory was 75.9MB in the beginning and 73.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 480.96ms. Allocated memory is still 111.1MB. Free memory was 73.8MB in the beginning and 54.3MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 1640.89ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 54.3MB in the beginning and 89.3MB in the end (delta: -35.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.37ms. Allocated memory is still 134.2MB. Free memory is still 89.3MB. 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~nondet105 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret96 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post101 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-03 01:37:34,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d025c7-dfca-4fbc-93da-ffd304ca4f47/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample