./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.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_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/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 1e3ef20869762bcfb9d8151d96b8065864cd760e .................................................................................................................................................................................................................................................. 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 17:17:41,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 17:17:41,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 17:17:41,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 17:17:41,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 17:17:41,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 17:17:41,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 17:17:41,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 17:17:41,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 17:17:41,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 17:17:41,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 17:17:41,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 17:17:41,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 17:17:42,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 17:17:42,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 17:17:42,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 17:17:42,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 17:17:42,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 17:17:42,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 17:17:42,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 17:17:42,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 17:17:42,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 17:17:42,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 17:17:42,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 17:17:42,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 17:17:42,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 17:17:42,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 17:17:42,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 17:17:42,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 17:17:42,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 17:17:42,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 17:17:42,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 17:17:42,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 17:17:42,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 17:17:42,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 17:17:42,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 17:17:42,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 17:17:42,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 17:17:42,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 17:17:42,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 17:17:42,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 17:17:42,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-12-01 17:17:42,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 17:17:42,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 17:17:42,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 17:17:42,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 17:17:42,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 17:17:42,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 17:17:42,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 17:17:42,117 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 17:17:42,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 17:17:42,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 17:17:42,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 17:17:42,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 17:17:42,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 17:17:42,120 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-01 17:17:42,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 17:17:42,121 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 17:17:42,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 17:17:42,121 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 17:17:42,121 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 17:17:42,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 17:17:42,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 17:17:42,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 17:17:42,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 17:17:42,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 17:17:42,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 17:17:42,123 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 17:17:42,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 17:17:42,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 17:17:42,124 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_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e3ef20869762bcfb9d8151d96b8065864cd760e [2020-12-01 17:17:42,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 17:17:42,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 17:17:42,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 17:17:42,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 17:17:42,531 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 17:17:42,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-12-01 17:17:42,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/data/935c520d0/6aeade33fb45446fb8e0ba177f95c73e/FLAG728e81d2e [2020-12-01 17:17:43,281 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 17:17:43,282 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-12-01 17:17:43,296 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/data/935c520d0/6aeade33fb45446fb8e0ba177f95c73e/FLAG728e81d2e [2020-12-01 17:17:43,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/data/935c520d0/6aeade33fb45446fb8e0ba177f95c73e [2020-12-01 17:17:43,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 17:17:43,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 17:17:43,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 17:17:43,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 17:17:43,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 17:17:43,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:43,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658065ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43, skipping insertion in model container [2020-12-01 17:17:43,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:43,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 17:17:43,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 17:17:43,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:17:43,901 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 17:17:43,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 17:17:43,936 INFO L208 MainTranslator]: Completed translation [2020-12-01 17:17:43,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43 WrapperNode [2020-12-01 17:17:43,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 17:17:43,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 17:17:43,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 17:17:43,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 17:17:43,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:43,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 17:17:44,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 17:17:44,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 17:17:44,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 17:17:44,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... [2020-12-01 17:17:44,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 17:17:44,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 17:17:44,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 17:17:44,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 17:17:44,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 05:17:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/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 17:17:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 17:17:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 17:17:44,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 17:17:44,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 17:17:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 17:17:44,635 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 17:17:44,635 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 17:17:44,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:17:44 BoogieIcfgContainer [2020-12-01 17:17:44,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 17:17:44,639 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 17:17:44,639 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 17:17:44,652 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 17:17:44,653 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:17:44" (1/1) ... [2020-12-01 17:17:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 17:17:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:17:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2020-12-01 17:17:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-01 17:17:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-01 17:17:44,715 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:17:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:17:44,915 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 17:17:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:17:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2020-12-01 17:17:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-01 17:17:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-01 17:17:44,991 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:17:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:17:45,074 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 17:17:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:17:45,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2020-12-01 17:17:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-01 17:17:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-01 17:17:45,222 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:17:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:17:45,250 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 17:17:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:17:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2020-12-01 17:17:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-01 17:17:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 17:17:45,271 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 17:17:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 17:17:45,316 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 17:17:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 17:17:45,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 9 states and 10 transitions. [2020-12-01 17:17:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-01 17:17:45,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 17:17:45,530 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 5 iterations. [2020-12-01 17:17:45,537 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-12-01 17:17:45,598 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:17:45,603 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-12-01 17:17:45,603 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-12-01 17:17:45,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 05:17:45 ImpRootNode [2020-12-01 17:17:45,611 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 17:17:45,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 17:17:45,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 17:17:45,612 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 17:17:45,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 05:17:44" (3/4) ... [2020-12-01 17:17:45,617 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 17:17:45,628 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-01 17:17:45,629 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-01 17:17:45,629 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 17:17:45,697 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_127625b3-2c03-4bcd-a398-cab1b0fd3e2d/bin/ukojak/witness.graphml [2020-12-01 17:17:45,697 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 17:17:45,699 INFO L168 Benchmark]: Toolchain (without parser) took 2058.88 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 76.6 MB in the beginning and 74.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:17:45,700 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory is still 62.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:17:45,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.92 ms. Allocated memory is still 102.8 MB. Free memory was 76.3 MB in the beginning and 80.6 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 17:17:45,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.93 ms. Allocated memory is still 102.8 MB. Free memory was 80.6 MB in the beginning and 78.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 17:17:45,703 INFO L168 Benchmark]: Boogie Preprocessor took 56.13 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 77.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 17:17:45,704 INFO L168 Benchmark]: RCFGBuilder took 573.81 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 61.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 17:17:45,705 INFO L168 Benchmark]: CodeCheck took 972.60 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 61.6 MB in the beginning and 77.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-01 17:17:45,706 INFO L168 Benchmark]: Witness Printer took 85.38 ms. Allocated memory is still 123.7 MB. Free memory was 77.5 MB in the beginning and 74.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 17:17:45,711 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, 13 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 SDtfs, 42 SDslu, 0 SDs, 0 SdLazy, 146 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: 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: 17]: 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: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= length * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory is still 62.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.92 ms. Allocated memory is still 102.8 MB. Free memory was 76.3 MB in the beginning and 80.6 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.93 ms. Allocated memory is still 102.8 MB. Free memory was 80.6 MB in the beginning and 78.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.13 ms. Allocated memory is still 102.8 MB. Free memory was 78.9 MB in the beginning and 77.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 573.81 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 61.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 972.60 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 61.6 MB in the beginning and 77.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 85.38 ms. Allocated memory is still 123.7 MB. Free memory was 77.5 MB in the beginning and 74.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...