./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Copenhagen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/Copenhagen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/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 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e ....................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 18:17:55,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 18:17:55,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 18:17:55,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 18:17:55,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 18:17:55,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 18:17:55,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 18:17:55,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 18:17:55,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 18:17:55,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 18:17:55,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 18:17:55,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 18:17:55,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 18:17:55,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 18:17:55,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 18:17:55,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 18:17:55,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 18:17:55,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 18:17:55,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 18:17:55,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 18:17:55,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 18:17:55,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 18:17:55,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 18:17:55,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 18:17:55,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 18:17:55,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 18:17:55,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 18:17:55,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 18:17:55,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 18:17:55,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 18:17:55,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 18:17:55,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 18:17:55,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 18:17:55,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 18:17:55,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 18:17:55,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 18:17:55,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 18:17:55,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 18:17:55,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 18:17:55,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 18:17:55,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 18:17:55,890 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-12-01 18:17:55,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 18:17:55,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 18:17:55,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 18:17:55,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 18:17:55,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 18:17:55,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 18:17:55,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 18:17:55,922 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 18:17:55,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 18:17:55,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 18:17:55,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 18:17:55,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 18:17:55,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 18:17:55,925 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-01 18:17:55,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 18:17:55,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 18:17:55,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 18:17:55,926 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 18:17:55,926 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 18:17:55,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 18:17:55,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 18:17:55,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 18:17:55,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 18:17:55,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 18:17:55,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 18:17:55,928 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 18:17:55,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 18:17:55,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 18:17:55,929 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_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bcaeaea390de0d2b32b8c11c56b4b66e7b2005e [2020-12-01 18:17:56,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 18:17:56,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 18:17:56,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 18:17:56,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 18:17:56,398 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 18:17:56,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/../../sv-benchmarks/c/termination-crafted/Copenhagen.c [2020-12-01 18:17:56,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/data/2b8174eb7/31a56f3936b14b5cbb4ee56b3e9c4268/FLAGf65de0d6f [2020-12-01 18:17:57,132 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 18:17:57,133 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/sv-benchmarks/c/termination-crafted/Copenhagen.c [2020-12-01 18:17:57,143 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/data/2b8174eb7/31a56f3936b14b5cbb4ee56b3e9c4268/FLAGf65de0d6f [2020-12-01 18:17:57,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/data/2b8174eb7/31a56f3936b14b5cbb4ee56b3e9c4268 [2020-12-01 18:17:57,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 18:17:57,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 18:17:57,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 18:17:57,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 18:17:57,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 18:17:57,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc1400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57, skipping insertion in model container [2020-12-01 18:17:57,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 18:17:57,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 18:17:57,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:17:57,760 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 18:17:57,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 18:17:57,822 INFO L208 MainTranslator]: Completed translation [2020-12-01 18:17:57,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57 WrapperNode [2020-12-01 18:17:57,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 18:17:57,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 18:17:57,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 18:17:57,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 18:17:57,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 18:17:57,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 18:17:57,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 18:17:57,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 18:17:57,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... [2020-12-01 18:17:57,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 18:17:57,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 18:17:57,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 18:17:57,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 18:17:57,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:17:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/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 [2020-12-01 18:17:57,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 18:17:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 18:17:58,253 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 18:17:58,253 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 18:17:58,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:17:58 BoogieIcfgContainer [2020-12-01 18:17:58,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 18:17:58,260 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 18:17:58,260 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 18:17:58,274 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 18:17:58,275 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:17:58" (1/1) ... [2020-12-01 18:17:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 18:17:58,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:17:58,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-01 18:17:58,345 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-01 18:17:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 18:17:58,348 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:17:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:17:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:17:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:17:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-12-01 18:17:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 18:17:58,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 18:17:58,648 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:17:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:17:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:17:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:17:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2020-12-01 18:17:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-01 18:17:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 18:17:58,871 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:17:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:17:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:17:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:17:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 16 states and 21 transitions. [2020-12-01 18:17:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-12-01 18:17:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 18:17:59,360 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:17:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:17:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:17:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:17:59,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 19 states and 26 transitions. [2020-12-01 18:17:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2020-12-01 18:17:59,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 18:17:59,871 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:17:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:17:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:18:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2020-12-01 18:18:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-12-01 18:18:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 18:18:00,089 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 18:18:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 18:18:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 18:18:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 18:18:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-01 18:18:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-01 18:18:00,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 18:18:00,699 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2020-12-01 18:18:00,714 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-12-01 18:18:00,766 INFO L569 CodeCheckObserver]: Invariant with dag size 6 [2020-12-01 18:18:00,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:18:00 ImpRootNode [2020-12-01 18:18:00,782 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 18:18:00,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 18:18:00,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 18:18:00,783 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 18:18:00,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:17:58" (3/4) ... [2020-12-01 18:18:00,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 18:18:00,798 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 18:18:00,799 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 18:18:00,799 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 18:18:00,866 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4ad85dde-3cba-4da6-9ce2-d5dc55da884b/bin/ukojak/witness.graphml [2020-12-01 18:18:00,866 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 18:18:00,868 INFO L168 Benchmark]: Toolchain (without parser) took 3357.78 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 82.4 MB in the beginning and 62.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:00,869 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:18:00,870 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.41 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 90.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:00,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.84 ms. Allocated memory is still 113.2 MB. Free memory was 90.7 MB in the beginning and 89.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:18:00,871 INFO L168 Benchmark]: Boogie Preprocessor took 24.87 ms. Allocated memory is still 113.2 MB. Free memory was 89.5 MB in the beginning and 88.5 MB in the end (delta: 990.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 18:18:00,872 INFO L168 Benchmark]: RCFGBuilder took 371.59 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 78.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:00,873 INFO L168 Benchmark]: CodeCheck took 2521.93 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 64.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:00,874 INFO L168 Benchmark]: Witness Printer took 84.01 ms. Allocated memory is still 136.3 MB. Free memory was 64.8 MB in the beginning and 62.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 18:18:00,878 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, 11 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 294 SDslu, 0 SDs, 0 SdLazy, 1300 SolverSat, 238 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 240 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 2/6 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: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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: 16]: 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 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 36.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.41 ms. Allocated memory is still 113.2 MB. Free memory was 82.1 MB in the beginning and 90.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.84 ms. Allocated memory is still 113.2 MB. Free memory was 90.7 MB in the beginning and 89.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.87 ms. Allocated memory is still 113.2 MB. Free memory was 89.5 MB in the beginning and 88.5 MB in the end (delta: 990.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.59 ms. Allocated memory is still 113.2 MB. Free memory was 88.5 MB in the beginning and 78.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 2521.93 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 64.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 16.1 GB. * Witness Printer took 84.01 ms. Allocated memory is still 136.3 MB. Free memory was 64.8 MB in the beginning and 62.8 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...