./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi --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 dc45446ef937b528e8e188f7d19f6fcadcf3bcbf2727a6d12f44743b423173a5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:04:17,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:04:17,502 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-24 23:04:17,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:04:17,518 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:04:17,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:04:17,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:04:17,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:04:17,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:04:17,565 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:04:17,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:04:17,567 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:04:17,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:04:17,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:04:17,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:04:17,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:04:17,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:04:17,571 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:04:17,571 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:04:17,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:04:17,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:04:17,573 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:04:17,574 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:04:17,574 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:04:17,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:04:17,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:04:17,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:04:17,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:04:17,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:04:17,577 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:04:17,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:04:17,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:04:17,579 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_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc45446ef937b528e8e188f7d19f6fcadcf3bcbf2727a6d12f44743b423173a5 [2023-11-24 23:04:17,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:04:17,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:04:17,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:04:17,934 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:04:17,935 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:04:17,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i [2023-11-24 23:04:21,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:04:21,605 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:04:21,609 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i [2023-11-24 23:04:21,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data/50917dda0/9787cf75eba84823b9f7fc5705b923ac/FLAGd74f7f565 [2023-11-24 23:04:21,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data/50917dda0/9787cf75eba84823b9f7fc5705b923ac [2023-11-24 23:04:21,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:04:21,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:04:21,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:04:21,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:04:21,673 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:04:21,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:04:21" (1/1) ... [2023-11-24 23:04:21,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8cd84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:21, skipping insertion in model container [2023-11-24 23:04:21,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:04:21" (1/1) ... [2023-11-24 23:04:21,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:04:22,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:04:22,712 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:04:22,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:04:23,035 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:23,035 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:23,035 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:23,036 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:23,044 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:04:23,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23 WrapperNode [2023-11-24 23:04:23,044 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:04:23,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:04:23,046 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:04:23,046 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:04:23,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,113 INFO L138 Inliner]: procedures = 498, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-11-24 23:04:23,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:04:23,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:04:23,114 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:04:23,114 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:04:23,124 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,139 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,141 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,146 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:04:23,147 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:04:23,147 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:04:23,147 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:04:23,148 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:04:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:04:23,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:04:23,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:04:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:04:23,238 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:04:23,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:04:23,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:04:23,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:04:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:04:23,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:04:23,390 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:04:23,392 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:04:23,625 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:04:23,965 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:04:23,966 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:04:23,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:23 BoogieIcfgContainer [2023-11-24 23:04:23,968 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:04:23,969 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:04:23,969 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:04:23,979 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:04:23,980 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:23" (1/1) ... [2023-11-24 23:04:23,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:04:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:24,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2023-11-24 23:04:24,060 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-24 23:04:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:04:24,065 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:04:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:24,446 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:04:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:24,731 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:04:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:24,779 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-24 23:04:24,801 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet111 [2023-11-24 23:04:24,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated [2023-11-24 23:04:24,805 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated [2023-11-24 23:04:24,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:04:24 ImpRootNode [2023-11-24 23:04:24,810 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:04:24,810 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:04:24,811 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:04:24,812 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:04:24,813 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:23" (3/4) ... [2023-11-24 23:04:24,817 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:04:24,818 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:04:24,819 INFO L158 Benchmark]: Toolchain (without parser) took 3152.17ms. Allocated memory is still 180.4MB. Free memory was 133.2MB in the beginning and 104.4MB in the end (delta: 28.8MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2023-11-24 23:04:24,820 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory was 65.4MB in the beginning and 65.2MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:04:24,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1376.69ms. Allocated memory is still 180.4MB. Free memory was 133.2MB in the beginning and 121.5MB in the end (delta: 11.8MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2023-11-24 23:04:24,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.95ms. Allocated memory is still 180.4MB. Free memory was 121.2MB in the beginning and 117.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 23:04:24,823 INFO L158 Benchmark]: Boogie Preprocessor took 32.36ms. Allocated memory is still 180.4MB. Free memory was 117.8MB in the beginning and 116.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:04:24,823 INFO L158 Benchmark]: RCFGBuilder took 820.74ms. Allocated memory is still 180.4MB. Free memory was 116.4MB in the beginning and 142.2MB in the end (delta: -25.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2023-11-24 23:04:24,824 INFO L158 Benchmark]: CodeCheck took 840.85ms. Allocated memory is still 180.4MB. Free memory was 142.0MB in the beginning and 104.4MB in the end (delta: 37.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-24 23:04:24,825 INFO L158 Benchmark]: Witness Printer took 7.93ms. Allocated memory is still 180.4MB. Free memory was 104.4MB in the beginning and 104.4MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:04:24,835 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, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 7 NumberOfCodeBlocks, 7 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 1569, overapproximation of bitwiseOr at line 1556. 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); [L1548] static int staticTrue = 1; [L1549] static int staticFalse = 0; [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}, staticFalse=0, staticTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=12, argc=12, argv={14:13}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_rand_sub_05_bad() [L1552] int data; [L1553] data = 0 [L1554] COND TRUE \read(staticTrue) [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) [L1556] EXPR ((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand() [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1558] COND TRUE \read(staticTrue) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1561] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 121.6MB. Free memory was 65.4MB in the beginning and 65.2MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1376.69ms. Allocated memory is still 180.4MB. Free memory was 133.2MB in the beginning and 121.5MB in the end (delta: 11.8MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.95ms. Allocated memory is still 180.4MB. Free memory was 121.2MB in the beginning and 117.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.36ms. Allocated memory is still 180.4MB. Free memory was 117.8MB in the beginning and 116.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 820.74ms. Allocated memory is still 180.4MB. Free memory was 116.4MB in the beginning and 142.2MB in the end (delta: -25.7MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. * CodeCheck took 840.85ms. Allocated memory is still 180.4MB. Free memory was 142.0MB in the beginning and 104.4MB in the end (delta: 37.6MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 7.93ms. Allocated memory is still 180.4MB. Free memory was 104.4MB in the beginning and 104.4MB in the end (delta: 2.7kB). 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~nondet111 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite109 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite109 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 [2023-11-24 23:04:24,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi --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 dc45446ef937b528e8e188f7d19f6fcadcf3bcbf2727a6d12f44743b423173a5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:04:27,509 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:04:27,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Overflow-64bit-Kojak_Bitvector.epf [2023-11-24 23:04:27,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:04:27,679 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:04:27,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:04:27,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:04:27,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:04:27,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:04:27,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:04:27,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:04:27,689 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:04:27,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:04:27,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:04:27,691 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:04:27,692 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:04:27,692 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:04:27,693 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:04:27,693 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:04:27,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:04:27,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:04:27,696 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:04:27,696 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:04:27,697 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:04:27,697 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:04:27,698 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2023-11-24 23:04:27,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:04:27,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:04:27,699 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:04:27,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:04:27,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:04:27,702 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:04:27,702 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:04:27,702 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:04:27,703 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2023-11-24 23:04:27,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:04:27,703 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_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc45446ef937b528e8e188f7d19f6fcadcf3bcbf2727a6d12f44743b423173a5 [2023-11-24 23:04:28,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:04:28,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:04:28,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:04:28,172 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:04:28,173 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:04:28,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i [2023-11-24 23:04:31,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:04:31,997 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:04:31,998 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_rand_sub_05_bad.i [2023-11-24 23:04:32,025 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data/b4e261c6e/23502df799ae4f92b731145fdf4c309e/FLAG23b78ca3b [2023-11-24 23:04:32,040 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/data/b4e261c6e/23502df799ae4f92b731145fdf4c309e [2023-11-24 23:04:32,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:04:32,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:04:32,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:04:32,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:04:32,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:04:32,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:04:32" (1/1) ... [2023-11-24 23:04:32,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329a99eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:32, skipping insertion in model container [2023-11-24 23:04:32,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:04:32" (1/1) ... [2023-11-24 23:04:32,116 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:04:33,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:04:33,335 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:04:33,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:04:33,633 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:33,634 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:33,634 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:33,634 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:04:33,642 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:04:33,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33 WrapperNode [2023-11-24 23:04:33,643 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:04:33,644 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:04:33,645 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:04:33,645 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:04:33,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,722 INFO L138 Inliner]: procedures = 503, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2023-11-24 23:04:33,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:04:33,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:04:33,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:04:33,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:04:33,736 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:04:33,764 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:04:33,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:04:33,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:04:33,765 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:04:33" (1/1) ... [2023-11-24 23:04:33,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:04:33,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:04:33,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:04:33,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:04:33,858 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-24 23:04:33,858 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-24 23:04:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:04:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:04:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:04:33,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:04:33,859 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-24 23:04:34,023 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:04:34,026 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:04:34,221 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:04:34,337 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:04:34,338 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:04:34,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:34 BoogieIcfgContainer [2023-11-24 23:04:34,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:04:34,341 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:04:34,341 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:04:34,351 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:04:34,351 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:34" (1/1) ... [2023-11-24 23:04:34,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:04:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:04:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2023-11-24 23:04:34,416 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-24 23:04:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:04:34,421 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:04:34,422 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 23:04:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/cvc4 [2023-11-24 23:04:34,465 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 23:04:34,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2023-11-24 23:04:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:34,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:04:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:34,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:04:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:04:34,922 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Exception during sending of exit command (exit): Broken pipe [2023-11-24 23:04:34,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2023-11-24 23:04:34,930 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2023-11-24 23:04:34,958 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet105 [2023-11-24 23:04:34,963 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-11-24 23:04:34,964 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ite103 could not be translated [2023-11-24 23:04:34,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:04:34 ImpRootNode [2023-11-24 23:04:34,970 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:04:34,973 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:04:34,973 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:04:34,974 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:04:34,974 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:04:34" (3/4) ... [2023-11-24 23:04:34,976 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-24 23:04:34,977 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:04:34,978 INFO L158 Benchmark]: Toolchain (without parser) took 2932.95ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 50.2MB in the beginning and 56.0MB in the end (delta: -5.8MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2023-11-24 23:04:34,979 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 79.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:04:34,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1596.97ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 46.5MB in the end (delta: 3.4MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-24 23:04:34,981 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.52ms. Allocated memory is still 96.5MB. Free memory was 46.1MB in the beginning and 68.9MB in the end (delta: -22.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2023-11-24 23:04:34,982 INFO L158 Benchmark]: Boogie Preprocessor took 39.29ms. Allocated memory is still 96.5MB. Free memory was 68.9MB in the beginning and 66.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:04:34,983 INFO L158 Benchmark]: RCFGBuilder took 576.24ms. Allocated memory is still 96.5MB. Free memory was 66.9MB in the beginning and 47.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 23:04:34,984 INFO L158 Benchmark]: CodeCheck took 629.70ms. Allocated memory is still 96.5MB. Free memory was 47.6MB in the beginning and 56.5MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:04:34,984 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 96.5MB. Free memory was 56.5MB in the beginning and 56.0MB in the end (delta: 509.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:04:34,998 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, 14 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 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 1569. Possible FailurePath: [L1522] const int GLOBAL_CONST_TRUE = 1; [L1523] const int GLOBAL_CONST_FALSE = 0; [L1524] const int GLOBAL_CONST_FIVE = 5; [L1525] int globalTrue = 1; [L1526] int globalFalse = 0; [L1527] int globalFive = 5; [L1546] int globalArgc = 0; [L1547] char** globalArgv = ((void *)0); [L1548] static int staticTrue = 1; [L1549] static int staticFalse = 0; [L1569] CALL printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, line={2:0}, staticFalse=0, staticTrue=1] [L1414] COND TRUE line != ((void *)0) [L1569] RET printLine("Calling bad()...") VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, \old(argc)=0, argc=0, argv={0:0}, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1570] CALL CWE191_Integer_Underflow__int_rand_sub_05_bad() [L1552] int data; [L1553] data = 0 [L1554] COND TRUE \read(staticTrue) [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] EXPR rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1 [L1556] data = ((int)(rand() & 1 ? (((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) : -(((unsigned)rand()<<30) ^ ((unsigned)rand()<<15) ^ rand()) - 1)) [L1558] COND TRUE \read(staticTrue) VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] [L1561] data - 1 VAL [GLOBAL_CONST_FALSE=0, GLOBAL_CONST_FIVE=5, GLOBAL_CONST_TRUE=1, data=-2147483648, globalArgc=0, globalArgv={0:0}, globalFalse=0, globalFive=5, globalTrue=1, staticFalse=0, staticTrue=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 79.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1596.97ms. Allocated memory was 77.6MB in the beginning and 96.5MB in the end (delta: 18.9MB). Free memory was 49.9MB in the beginning and 46.5MB in the end (delta: 3.4MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.52ms. Allocated memory is still 96.5MB. Free memory was 46.1MB in the beginning and 68.9MB in the end (delta: -22.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.29ms. Allocated memory is still 96.5MB. Free memory was 68.9MB in the beginning and 66.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 576.24ms. Allocated memory is still 96.5MB. Free memory was 66.9MB in the beginning and 47.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 629.70ms. Allocated memory is still 96.5MB. Free memory was 47.6MB in the beginning and 56.5MB in the end (delta: -9.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 96.5MB. Free memory was 56.5MB in the beginning and 56.0MB in the end (delta: 509.0kB). 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~ite103 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ite103 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 [2023-11-24 23:04:35,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1aa634cc-3d50-4555-8262-bb92aa7c76b9/bin/ukojak-verify-afCqCEvfdi/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 Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample