./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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 788549da26f481bb0f59dd5938598bf17009a023a8b9a6d4a1760ea4771a9b10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 21:31:29,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 21:31:29,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-12-02 21:31:29,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 21:31:29,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-12-02 21:31:29,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 21:31:29,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 21:31:29,647 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 21:31:29,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 21:31:29,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 21:31:29,649 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 21:31:29,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 21:31:29,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 21:31:29,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 21:31:29,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 21:31:29,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 21:31:29,652 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 21:31:29,652 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 21:31:29,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 21:31:29,653 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 21:31:29,654 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 21:31:29,654 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 21:31:29,663 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 21:31:29,664 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 21:31:29,664 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 21:31:29,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:31:29,665 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 21:31:29,665 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 21:31:29,666 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 21:31:29,666 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-12-02 21:31:29,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 21:31:29,667 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 21:31:29,667 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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 788549da26f481bb0f59dd5938598bf17009a023a8b9a6d4a1760ea4771a9b10 [2023-12-02 21:31:29,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 21:31:29,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 21:31:29,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 21:31:29,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 21:31:29,924 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 21:31:29,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_bad.i [2023-12-02 21:31:32,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 21:31:33,032 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 21:31:33,033 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_bad.i [2023-12-02 21:31:33,058 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data/41932dc92/47c735a31ea643c0a8383e90efbd5679/FLAGb5682a861 [2023-12-02 21:31:33,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data/41932dc92/47c735a31ea643c0a8383e90efbd5679 [2023-12-02 21:31:33,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 21:31:33,078 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 21:31:33,079 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 21:31:33,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 21:31:33,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 21:31:33,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:31:33" (1/1) ... [2023-12-02 21:31:33,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fea9210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:33, skipping insertion in model container [2023-12-02 21:31:33,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:31:33" (1/1) ... [2023-12-02 21:31:33,157 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 21:31:33,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:31:33,965 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 21:31:34,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:31:34,191 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:34,191 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:34,192 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:34,192 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:34,200 INFO L206 MainTranslator]: Completed translation [2023-12-02 21:31:34,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34 WrapperNode [2023-12-02 21:31:34,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 21:31:34,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 21:31:34,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 21:31:34,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 21:31:34,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,258 INFO L138 Inliner]: procedures = 498, calls = 61, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-12-02 21:31:34,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 21:31:34,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 21:31:34,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 21:31:34,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 21:31:34,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,278 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 21:31:34,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 21:31:34,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 21:31:34,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 21:31:34,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:31:34,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 21:31:34,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 21:31:34,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 21:31:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 21:31:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 21:31:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 21:31:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 21:31:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 21:31:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 21:31:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 21:31:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 21:31:34,355 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 21:31:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 21:31:34,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 21:31:34,497 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 21:31:34,499 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 21:31:34,597 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 21:31:34,646 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 21:31:34,647 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 21:31:34,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:31:34 BoogieIcfgContainer [2023-12-02 21:31:34,649 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 21:31:34,650 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 21:31:34,650 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 21:31:34,657 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 21:31:34,658 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:31:34" (1/1) ... [2023-12-02 21:31:34,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 21:31:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:31:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-12-02 21:31:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-02 21:31:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 21:31:34,719 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:31:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 21:31:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:34,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 21:31:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:34,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 21:31:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:34,991 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-02 21:31:35,012 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet103 [2023-12-02 21:31:35,015 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated [2023-12-02 21:31:35,015 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-12-02 21:31:35,016 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated [2023-12-02 21:31:35,020 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 09:31:35 ImpRootNode [2023-12-02 21:31:35,020 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 21:31:35,021 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 21:31:35,021 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 21:31:35,021 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 21:31:35,022 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:31:34" (3/4) ... [2023-12-02 21:31:35,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 21:31:35,026 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 21:31:35,027 INFO L158 Benchmark]: Toolchain (without parser) took 1948.96ms. Allocated memory is still 178.3MB. Free memory was 143.7MB in the beginning and 101.4MB in the end (delta: 42.3MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2023-12-02 21:31:35,028 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:31:35,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1121.28ms. Allocated memory is still 178.3MB. Free memory was 143.4MB in the beginning and 140.0MB in the end (delta: 3.4MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2023-12-02 21:31:35,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.74ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 137.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 21:31:35,030 INFO L158 Benchmark]: Boogie Preprocessor took 29.86ms. Allocated memory is still 178.3MB. Free memory was 137.1MB in the beginning and 135.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 21:31:35,030 INFO L158 Benchmark]: RCFGBuilder took 358.53ms. Allocated memory is still 178.3MB. Free memory was 135.8MB in the beginning and 120.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 21:31:35,031 INFO L158 Benchmark]: CodeCheck took 370.90ms. Allocated memory is still 178.3MB. Free memory was 120.3MB in the beginning and 101.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 21:31:35,032 INFO L158 Benchmark]: Witness Printer took 5.32ms. Allocated memory is still 178.3MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:31:35,035 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 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 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, 0.0s 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, 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: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1570. 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); [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1570] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=16, argc=16, argv={14:44}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1571] CALL CWE191_Integer_Underflow__int_fscanf_multiply_16_bad() [L1550] int data; [L1551] data = 0 [L1552] COND TRUE 1 [L1557] COND TRUE 1 [L1559] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={30614:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1559] COND TRUE data < 0 [L1561] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={30614:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={30614:0}, 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 0.26ms. Allocated memory is still 121.6MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1121.28ms. Allocated memory is still 178.3MB. Free memory was 143.4MB in the beginning and 140.0MB in the end (delta: 3.4MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.74ms. Allocated memory is still 178.3MB. Free memory was 140.0MB in the beginning and 137.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.86ms. Allocated memory is still 178.3MB. Free memory was 137.1MB in the beginning and 135.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.53ms. Allocated memory is still 178.3MB. Free memory was 135.8MB in the beginning and 120.3MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 370.90ms. Allocated memory is still 178.3MB. Free memory was 120.3MB in the beginning and 101.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.32ms. Allocated memory is still 178.3MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet103 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem100 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem101 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem101 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 [2023-12-02 21:31:35,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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 788549da26f481bb0f59dd5938598bf17009a023a8b9a6d4a1760ea4771a9b10 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 21:31:36,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 21:31:37,040 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-12-02 21:31:37,071 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 21:31:37,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 21:31:37,073 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-12-02 21:31:37,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 21:31:37,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 21:31:37,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 21:31:37,075 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 21:31:37,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 21:31:37,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 21:31:37,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 21:31:37,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 21:31:37,078 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 21:31:37,078 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 21:31:37,079 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 21:31:37,079 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 21:31:37,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 21:31:37,081 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 21:31:37,081 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 21:31:37,083 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-12-02 21:31:37,084 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-12-02 21:31:37,084 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-12-02 21:31:37,084 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 21:31:37,085 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-12-02 21:31:37,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 21:31:37,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:31:37,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 21:31:37,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 21:31:37,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 21:31:37,087 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 21:31:37,088 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 21:31:37,088 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 21:31:37,088 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-12-02 21:31:37,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 21:31:37,089 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_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 788549da26f481bb0f59dd5938598bf17009a023a8b9a6d4a1760ea4771a9b10 [2023-12-02 21:31:37,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 21:31:37,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 21:31:37,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 21:31:37,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 21:31:37,388 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 21:31:37,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_bad.i [2023-12-02 21:31:40,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 21:31:40,593 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 21:31:40,594 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fscanf_multiply_16_bad.i [2023-12-02 21:31:40,619 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data/4477f4f37/8ed35428e22446c2a8aa78c9c02d0881/FLAG8fc8c61c7 [2023-12-02 21:31:40,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/data/4477f4f37/8ed35428e22446c2a8aa78c9c02d0881 [2023-12-02 21:31:40,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 21:31:40,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 21:31:40,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 21:31:40,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 21:31:40,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 21:31:40,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:31:40" (1/1) ... [2023-12-02 21:31:40,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2628623b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:40, skipping insertion in model container [2023-12-02 21:31:40,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:31:40" (1/1) ... [2023-12-02 21:31:40,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 21:31:41,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:31:41,572 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 21:31:41,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 21:31:41,779 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:41,780 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:41,780 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:41,780 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 21:31:41,786 INFO L206 MainTranslator]: Completed translation [2023-12-02 21:31:41,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41 WrapperNode [2023-12-02 21:31:41,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 21:31:41,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 21:31:41,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 21:31:41,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 21:31:41,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,863 INFO L138 Inliner]: procedures = 503, calls = 61, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2023-12-02 21:31:41,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 21:31:41,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 21:31:41,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 21:31:41,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 21:31:41,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 21:31:41,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 21:31:41,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 21:31:41,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 21:31:41,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:31:41" (1/1) ... [2023-12-02 21:31:41,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-12-02 21:31:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/z3 [2023-12-02 21:31:41,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-12-02 21:31:41,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-12-02 21:31:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-12-02 21:31:41,972 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-12-02 21:31:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 21:31:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 21:31:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 21:31:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 21:31:41,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 21:31:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 21:31:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 21:31:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 21:31:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-12-02 21:31:42,123 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 21:31:42,125 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 21:31:42,253 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 21:31:42,304 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 21:31:42,305 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 21:31:42,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:31:42 BoogieIcfgContainer [2023-12-02 21:31:42,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 21:31:42,308 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-12-02 21:31:42,308 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-12-02 21:31:42,317 INFO L274 PluginConnector]: CodeCheck initialized [2023-12-02 21:31:42,317 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:31:42" (1/1) ... [2023-12-02 21:31:42,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 21:31:42,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-12-02 21:31:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 15 states and 17 transitions. [2023-12-02 21:31:42,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-02 21:31:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 21:31:42,382 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-12-02 21:31:42,383 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 21:31:42,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/cvc4 [2023-12-02 21:31:42,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 21:31:42,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-12-02 21:31:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:42,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 21:31:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:42,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 21:31:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 21:31:42,903 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-12-02 21:31:42,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/bin/ukojak-verify-Qdu7aM0XO9/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2023-12-02 21:31:42,909 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-12-02 21:31:42,940 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet101 [2023-12-02 21:31:42,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated [2023-12-02 21:31:42,944 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem99 could not be translated [2023-12-02 21:31:42,945 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem99 could not be translated [2023-12-02 21:31:42,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 09:31:42 ImpRootNode [2023-12-02 21:31:42,949 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-12-02 21:31:42,950 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 21:31:42,968 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 21:31:42,968 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 21:31:42,969 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:31:42" (3/4) ... [2023-12-02 21:31:42,971 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 21:31:42,972 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 21:31:42,973 INFO L158 Benchmark]: Toolchain (without parser) took 2333.96ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 74.3MB in the end (delta: 1.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,974 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 39.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 21:31:42,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1146.31ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 37.2MB in the end (delta: 38.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.77ms. Allocated memory is still 102.8MB. Free memory was 37.2MB in the beginning and 74.0MB in the end (delta: -36.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,976 INFO L158 Benchmark]: Boogie Preprocessor took 37.69ms. Allocated memory is still 102.8MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,976 INFO L158 Benchmark]: RCFGBuilder took 404.40ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 54.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,977 INFO L158 Benchmark]: CodeCheck took 641.64ms. Allocated memory is still 102.8MB. Free memory was 54.5MB in the beginning and 36.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,978 INFO L158 Benchmark]: Witness Printer took 22.39ms. Allocated memory is still 102.8MB. Free memory was 36.9MB in the beginning and 74.3MB in the end (delta: -37.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 21:31:42,981 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 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 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, 0.0s 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, 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: 1561]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 1570. 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); [L1570] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}] [L1414] COND TRUE line != ((void *)0) [L1570] 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] [L1571] CALL CWE191_Integer_Underflow__int_fscanf_multiply_16_bad() [L1550] int data; [L1551] data = 0 [L1552] COND TRUE 1 [L1557] COND TRUE 1 [L1559] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1559] COND TRUE data < 0 [L1561] EXPR \read(data) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] [L1561] data * 2 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data={5:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 62.9MB. Free memory was 39.1MB in the beginning and 39.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1146.31ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 37.2MB in the end (delta: 38.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.77ms. Allocated memory is still 102.8MB. Free memory was 37.2MB in the beginning and 74.0MB in the end (delta: -36.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.69ms. Allocated memory is still 102.8MB. Free memory was 74.0MB in the beginning and 71.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.40ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 54.5MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * CodeCheck took 641.64ms. Allocated memory is still 102.8MB. Free memory was 54.5MB in the beginning and 36.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 22.39ms. Allocated memory is still 102.8MB. Free memory was 36.9MB in the beginning and 74.3MB in the end (delta: -37.4MB). Peak memory consumption was 4.2MB. 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 Unfinished Backtranslation: IdentifierExpression #t~mem98 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem99 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem99 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 [2023-12-02 21:31:43,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bdfc9a-c562-42b4-9912-55ff58c00a15/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