./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/easy1.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_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/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 444b5d8373157a5e55f28060b712b2ca462d0fa9 .............................................................................................................................................................................................................................................................. 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 17:05:53,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:05:53,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:05:53,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:05:53,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:05:53,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:05:53,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:05:53,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:05:53,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:05:53,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:05:53,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:05:53,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:05:53,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:05:53,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:05:53,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:05:53,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:05:53,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:05:53,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:05:53,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:05:53,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:05:53,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:05:53,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:05:53,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:05:53,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:05:53,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:05:53,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:05:53,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:05:53,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:05:53,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:05:53,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:05:53,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:05:53,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:05:53,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:05:53,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:05:53,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:05:53,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:05:53,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:05:53,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:05:53,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:05:53,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:05:53,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:05:54,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-12-01 17:05:54,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:05:54,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:05:54,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:05:54,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:05:54,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:05:54,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:05:54,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:05:54,059 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 17:05:54,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:05:54,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:05:54,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:05:54,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:05:54,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:05:54,063 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-01 17:05:54,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:05:54,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:05:54,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:05:54,064 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:05:54,064 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:05:54,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:05:54,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:05:54,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:05:54,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:05:54,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:05:54,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:05:54,066 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:05:54,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:05:54,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:05:54,067 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_7e325fd1-a497-4d1c-82b2-4aed5c97f303/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 444b5d8373157a5e55f28060b712b2ca462d0fa9 [2020-12-01 17:05:54,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:05:54,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:05:54,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:05:54,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:05:54,487 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:05:54,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/../../sv-benchmarks/c/termination-crafted/easy1.c [2020-12-01 17:05:54,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/data/27c0f7110/9105772184a84a7e807a2f6f1345a4ca/FLAG39a1c5aa8 [2020-12-01 17:05:55,234 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:05:55,235 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/sv-benchmarks/c/termination-crafted/easy1.c [2020-12-01 17:05:55,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/data/27c0f7110/9105772184a84a7e807a2f6f1345a4ca/FLAG39a1c5aa8 [2020-12-01 17:05:55,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/data/27c0f7110/9105772184a84a7e807a2f6f1345a4ca [2020-12-01 17:05:55,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:05:55,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:05:55,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:05:55,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:05:55,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:05:55,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ae6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55, skipping insertion in model container [2020-12-01 17:05:55,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:05:55,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:05:55,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:05:55,806 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:05:55,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:05:55,865 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:05:55,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55 WrapperNode [2020-12-01 17:05:55,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:05:55,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:05:55,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:05:55,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:05:55,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:05:55,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:05:55,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:05:55,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:05:55,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... [2020-12-01 17:05:55,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:05:55,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:05:55,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:05:55,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:05:55,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:05:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/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 17:05:56,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:05:56,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:05:56,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:05:56,263 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 17:05:56,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:05:56 BoogieIcfgContainer [2020-12-01 17:05:56,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:05:56,268 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:05:56,268 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:05:56,281 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:05:56,281 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:05:56" (1/1) ... [2020-12-01 17:05:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:05:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2020-12-01 17:05:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-01 17:05:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 17:05:56,337 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:56,495 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 17:05:56,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-12-01 17:05:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-12-01 17:05:56,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 17:05:56,561 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:56,600 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 17:05:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2020-12-01 17:05:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-01 17:05:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 17:05:56,650 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:56,688 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 17:05:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2020-12-01 17:05:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2020-12-01 17:05:56,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 17:05:56,879 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:56,922 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 17:05:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-12-01 17:05:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-12-01 17:05:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:05:56,989 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:05:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 13 states and 15 transitions. [2020-12-01 17:05:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-12-01 17:05:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:05:57,081 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:57,117 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 17:05:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 20 transitions. [2020-12-01 17:05:57,588 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-12-01 17:05:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 17:05:57,590 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:05:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:05:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 17:05:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:05:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 15 states and 19 transitions. [2020-12-01 17:05:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2020-12-01 17:05:57,662 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 17:05:57,663 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2020-12-01 17:05:57,671 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-12-01 17:05:57,772 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 17:05:57,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:05:57 ImpRootNode [2020-12-01 17:05:57,791 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:05:57,793 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:05:57,793 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:05:57,793 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:05:57,794 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:05:56" (3/4) ... [2020-12-01 17:05:57,800 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 17:05:57,815 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 17:05:57,815 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 17:05:57,816 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 17:05:57,916 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7e325fd1-a497-4d1c-82b2-4aed5c97f303/bin/ukojak/witness.graphml [2020-12-01 17:05:57,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:05:57,919 INFO L168 Benchmark]: Toolchain (without parser) took 2341.20 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 67.2 MB in the beginning and 51.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2020-12-01 17:05:57,920 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 96.5 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:05:57,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.51 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 73.5 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:05:57,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.83 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 72.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:05:57,924 INFO L168 Benchmark]: Boogie Preprocessor took 39.65 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:05:57,925 INFO L168 Benchmark]: RCFGBuilder took 306.52 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 61.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 17:05:57,926 INFO L168 Benchmark]: CodeCheck took 1523.32 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.1 MB in the beginning and 54.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2020-12-01 17:05:57,927 INFO L168 Benchmark]: Witness Printer took 123.70 ms. Allocated memory is still 117.4 MB. Free memory was 54.0 MB in the beginning and 51.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:05:57,939 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: 1.3s, OverallIterations: 8, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 256 SDtfs, 724 SDslu, 530 SDs, 0 SdLazy, 1916 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 303 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 8/8 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: 24]: 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: 24]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 <= x * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 96.5 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.51 ms. Allocated memory is still 96.5 MB. Free memory was 67.0 MB in the beginning and 73.5 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.83 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 72.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.65 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 306.52 ms. Allocated memory is still 96.5 MB. Free memory was 71.2 MB in the beginning and 61.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 1523.32 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.1 MB in the beginning and 54.0 MB in the end (delta: 7.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. * Witness Printer took 123.70 ms. Allocated memory is still 117.4 MB. Free memory was 54.0 MB in the beginning and 51.9 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...