./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_good.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_good.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL --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 9c66022655bc21242337870299820d9efffb684053c41ac437bb261dc679ddd5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:57:42,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:57:42,227 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Overflow-64bit-Kojak_Default.epf [2023-11-19 03:57:42,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:57:42,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:57:42,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:57:42,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:57:42,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:57:42,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:57:42,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:57:42,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:57:42,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:57:42,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:57:42,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:57:42,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:57:42,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:57:42,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:57:42,277 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 03:57:42,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 03:57:42,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:57:42,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:57:42,281 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:57:42,281 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:57:42,282 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:57:42,283 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:57:42,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:57:42,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:57:42,285 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:57:42,286 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:57:42,286 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:57:42,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:57:42,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:57:42,289 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_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c66022655bc21242337870299820d9efffb684053c41ac437bb261dc679ddd5 [2023-11-19 03:57:42,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:57:42,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:57:42,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:57:42,586 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:57:42,586 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:57:42,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_good.i [2023-11-19 03:57:45,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:57:46,285 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:57:46,286 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/sv-benchmarks/c/Juliet_Test/CWE191_Integer_Underflow__int_fgets_sub_51_good.i [2023-11-19 03:57:46,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/data/c48fc1c53/bd0f515ae4f946a3b06d02c9b593a095/FLAGbb8e27b27 [2023-11-19 03:57:46,337 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/data/c48fc1c53/bd0f515ae4f946a3b06d02c9b593a095 [2023-11-19 03:57:46,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:57:46,345 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:57:46,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:57:46,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:57:46,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:57:46,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:57:46" (1/1) ... [2023-11-19 03:57:46,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db916df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:46, skipping insertion in model container [2023-11-19 03:57:46,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:57:46" (1/1) ... [2023-11-19 03:57:46,438 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:57:46,807 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:57:47,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:57:47,367 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:57:47,401 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 03:57:47,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:57:47,702 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:47,702 WARN L675 CHandler]: The function __ctype_b_loc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:47,702 WARN L675 CHandler]: The function iswxdigit is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:47,702 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:47,703 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:47,703 WARN L675 CHandler]: The function fgets is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 03:57:47,711 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:57:47,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47 WrapperNode [2023-11-19 03:57:47,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:57:47,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:57:47,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:57:47,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:57:47,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,793 INFO L138 Inliner]: procedures = 504, calls = 71, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 67 [2023-11-19 03:57:47,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:57:47,795 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:57:47,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:57:47,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:57:47,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:57:47,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:57:47,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:57:47,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:57:47,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:57:47" (1/1) ... [2023-11-19 03:57:47,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:57:47,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:57:47,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:57:47,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:57:47,915 INFO L130 BoogieDeclarations]: Found specification of procedure printIntLine [2023-11-19 03:57:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printIntLine [2023-11-19 03:57:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2023-11-19 03:57:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure printLine [2023-11-19 03:57:47,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printLine [2023-11-19 03:57:47,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 03:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:57:47,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 03:57:47,917 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 03:57:47,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:57:48,073 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:57:48,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:57:48,217 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:57:48,255 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:57:48,255 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:57:48,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:48 BoogieIcfgContainer [2023-11-19 03:57:48,260 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:57:48,261 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:57:48,261 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:57:48,270 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:57:48,271 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:48" (1/1) ... [2023-11-19 03:57:48,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:57:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2023-11-19 03:57:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-19 03:57:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 03:57:48,332 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:48,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:48,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:57:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:48,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 27 states and 32 transitions. [2023-11-19 03:57:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-19 03:57:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 03:57:48,735 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:48,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:57:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 26 states and 31 transitions. [2023-11-19 03:57:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-11-19 03:57:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 03:57:48,881 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:57:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 25 states and 30 transitions. [2023-11-19 03:57:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-19 03:57:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 03:57:49,030 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:57:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 29 states and 35 transitions. [2023-11-19 03:57:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-11-19 03:57:49,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 03:57:49,285 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:57:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:57:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:57:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:57:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:57:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 24 states and 29 transitions. [2023-11-19 03:57:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-19 03:57:49,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 03:57:49,533 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-19 03:57:49,542 INFO L751 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2023-11-19 03:57:49,589 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 03:57:49,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:57:49 ImpRootNode [2023-11-19 03:57:49,594 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:57:49,595 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:57:49,595 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:57:49,595 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:57:49,596 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:57:48" (3/4) ... [2023-11-19 03:57:49,600 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 03:57:49,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printLine [2023-11-19 03:57:49,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure printIntLine [2023-11-19 03:57:49,612 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-11-19 03:57:49,612 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-19 03:57:49,614 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 03:57:49,614 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 03:57:49,708 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:57:49,709 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/witness.yml [2023-11-19 03:57:49,709 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:57:49,710 INFO L158 Benchmark]: Toolchain (without parser) took 3364.38ms. Allocated memory is still 146.8MB. Free memory was 112.4MB in the beginning and 71.9MB in the end (delta: 40.6MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,710 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:57:49,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1362.31ms. Allocated memory is still 146.8MB. Free memory was 112.1MB in the beginning and 106.8MB in the end (delta: 5.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,711 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.65ms. Allocated memory is still 146.8MB. Free memory was 106.8MB in the beginning and 103.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,711 INFO L158 Benchmark]: Boogie Preprocessor took 29.58ms. Allocated memory is still 146.8MB. Free memory was 103.9MB in the beginning and 101.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,712 INFO L158 Benchmark]: RCFGBuilder took 434.99ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 86.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,712 INFO L158 Benchmark]: CodeCheck took 1333.06ms. Allocated memory is still 146.8MB. Free memory was 86.5MB in the beginning and 77.1MB in the end (delta: 9.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,712 INFO L158 Benchmark]: Witness Printer took 114.30ms. Allocated memory is still 146.8MB. Free memory was 77.1MB in the beginning and 71.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:57:49,715 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 3 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 82 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 76 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 442 GetRequests, 420 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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 - PositiveResult [Line: 1590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1590]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1598]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1598]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 1584]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 117.4MB. Free memory is still 73.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1362.31ms. Allocated memory is still 146.8MB. Free memory was 112.1MB in the beginning and 106.8MB in the end (delta: 5.3MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.65ms. Allocated memory is still 146.8MB. Free memory was 106.8MB in the beginning and 103.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.58ms. Allocated memory is still 146.8MB. Free memory was 103.9MB in the beginning and 101.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.99ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 86.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 1333.06ms. Allocated memory is still 146.8MB. Free memory was 86.5MB in the beginning and 77.1MB in the end (delta: 9.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Witness Printer took 114.30ms. Allocated memory is still 146.8MB. Free memory was 77.1MB in the beginning and 71.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-19 03:57:49,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc1bbd6b-2b3c-44a7-bed7-eff11c028329/bin/ukojak-verify-G8NBE6pJGL/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: TRUE