./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak --witnessprinter.witness.filename witness.graphml --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 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 ....................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:26:58,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:26:58,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:26:58,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:26:58,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:26:58,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:26:58,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:26:58,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:26:58,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:26:58,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:26:58,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:26:58,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:26:58,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:26:58,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:26:58,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:26:58,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:26:58,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:26:58,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:26:58,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:26:58,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:26:58,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:26:58,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:26:58,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:26:58,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:26:58,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:26:58,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:26:58,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:26:58,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:26:58,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:26:58,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:26:58,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:26:58,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:26:58,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:26:58,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:26:58,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:26:58,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:26:58,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:26:58,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:26:58,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:26:58,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:26:58,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:26:58,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-11-29 23:26:58,889 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:26:58,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:26:58,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-29 23:26:58,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-29 23:26:58,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:26:58,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:26:58,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:26:58,894 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:26:58,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:26:58,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:26:58,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:26:58,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:26:58,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:26:58,898 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 23:26:58,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:26:58,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:26:58,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:26:58,899 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-29 23:26:58,899 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-29 23:26:58,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:26:58,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:26:58,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 23:26:58,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:26:58,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:26:58,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:26:58,901 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-29 23:26:58,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:26:58,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:26:58,902 INFO L138 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-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2020-11-29 23:26:59,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:26:59,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:26:59,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:26:59,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:26:59,270 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:26:59,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/../../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2020-11-29 23:26:59,392 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/data/330bad8ef/773fa6e5298f4b328eaf72367cdb63ab/FLAG480997f57 [2020-11-29 23:27:00,034 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:27:00,034 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2020-11-29 23:27:00,042 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/data/330bad8ef/773fa6e5298f4b328eaf72367cdb63ab/FLAG480997f57 [2020-11-29 23:27:00,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/data/330bad8ef/773fa6e5298f4b328eaf72367cdb63ab [2020-11-29 23:27:00,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:27:00,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:27:00,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:27:00,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:27:00,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:27:00,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a5090b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00, skipping insertion in model container [2020-11-29 23:27:00,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:27:00,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:27:00,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:27:00,709 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:27:00,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:27:00,789 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:27:00,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00 WrapperNode [2020-11-29 23:27:00,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:27:00,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:27:00,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:27:00,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:27:00,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:27:00,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:27:00,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:27:00,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:27:00,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... [2020-11-29 23:27:00,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:27:00,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:27:00,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:27:00,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:27:00,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:27:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-29 23:27:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:27:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:27:01,216 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:27:01,217 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 23:27:01,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:27:01 BoogieIcfgContainer [2020-11-29 23:27:01,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:27:01,221 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-29 23:27:01,221 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-29 23:27:01,244 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-29 23:27:01,245 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:27:01" (1/1) ... [2020-11-29 23:27:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:27:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2020-11-29 23:27:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-29 23:27:01,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 23:27:01,303 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:27:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:27:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:27:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:01,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 14 states and 17 transitions. [2020-11-29 23:27:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-29 23:27:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 23:27:01,667 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:27:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:27:01,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:27:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 13 states and 16 transitions. [2020-11-29 23:27:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-11-29 23:27:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 23:27:01,799 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:27:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:27:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:27:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 18 states and 26 transitions. [2020-11-29 23:27:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2020-11-29 23:27:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:27:02,295 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:27:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:27:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:27:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 22 states and 33 transitions. [2020-11-29 23:27:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2020-11-29 23:27:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 23:27:02,769 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:27:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:27:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:27:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 22 states and 32 transitions. [2020-11-29 23:27:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-11-29 23:27:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:27:03,240 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-29 23:27:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:27:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:27:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-29 23:27:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2020-11-29 23:27:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2020-11-29 23:27:03,468 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:27:03,469 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2020-11-29 23:27:03,478 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-11-29 23:27:03,536 INFO L569 CodeCheckObserver]: Invariant with dag size 6 [2020-11-29 23:27:03,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.11 11:27:03 ImpRootNode [2020-11-29 23:27:03,546 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-29 23:27:03,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:27:03,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:27:03,547 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:27:03,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:27:01" (3/4) ... [2020-11-29 23:27:03,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:27:03,570 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-29 23:27:03,571 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 23:27:03,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:27:03,630 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_88bc2071-a2d0-4d4e-be9b-b85116bb1342/bin/ukojak/witness.graphml [2020-11-29 23:27:03,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:27:03,633 INFO L168 Benchmark]: Toolchain (without parser) took 3208.32 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 69.4 MB in the beginning and 56.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:27:03,634 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 55.6 MB in the beginning and 55.5 MB in the end (delta: 24.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:27:03,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.08 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 79.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:27:03,635 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 100.7 MB. Free memory was 79.0 MB in the beginning and 77.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:27:03,636 INFO L168 Benchmark]: Boogie Preprocessor took 29.98 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.5 MB in the end (delta: 996.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:27:03,637 INFO L168 Benchmark]: RCFGBuilder took 351.82 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 66.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:27:03,638 INFO L168 Benchmark]: CodeCheck took 2325.60 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 58.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:27:03,639 INFO L168 Benchmark]: Witness Printer took 83.03 ms. Allocated memory is still 121.6 MB. Free memory was 58.3 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:27:03,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 12 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 358 SDslu, 64 SDs, 0 SdLazy, 1440 SolverSat, 290 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 291 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 7/7 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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: 19]: Loop Invariant Derived loop invariant: x <= 2147483647 && y <= 2147483647 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 55.6 MB in the beginning and 55.5 MB in the end (delta: 24.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.08 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 79.0 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.90 ms. Allocated memory is still 100.7 MB. Free memory was 79.0 MB in the beginning and 77.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.98 ms. Allocated memory is still 100.7 MB. Free memory was 77.5 MB in the beginning and 76.5 MB in the end (delta: 996.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 351.82 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 66.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 2325.60 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 66.1 MB in the beginning and 58.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. * Witness Printer took 83.03 ms. Allocated memory is still 121.6 MB. Free memory was 58.3 MB in the beginning and 56.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...