./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/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-a4ecdab [2020-11-28 04:39:45,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:39:45,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:39:45,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:39:45,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:39:45,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:39:45,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:39:45,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:39:45,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:39:45,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:39:45,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:39:45,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:39:45,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:39:45,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:39:45,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:39:45,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:39:45,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:39:45,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:39:45,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:39:45,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:39:45,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:39:45,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:39:45,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:39:45,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:39:45,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:39:45,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:39:45,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:39:45,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:39:45,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:39:45,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:39:45,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:39:45,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:39:45,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:39:45,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:39:45,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:39:45,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:39:45,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:39:45,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:39:45,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:39:45,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:39:45,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:39:45,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/config/svcomp-Overflow-64bit-Kojak_Default.epf [2020-11-28 04:39:45,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:39:45,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:39:45,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:39:45,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:39:45,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:39:45,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:39:45,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:39:45,527 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 04:39:45,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:39:45,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:39:45,529 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:39:45,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:39:45,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:39:45,530 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 04:39:45,530 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:39:45,530 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:39:45,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:39:45,531 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:39:45,531 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:39:45,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:39:45,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:39:45,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:45,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:39:45,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:39:45,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:39:45,532 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:39:45,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:39:45,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:39:45,533 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_0702845b-87f5-4c06-a5fb-9f4264452dfb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e3ef20869762bcfb9d8151d96b8065864cd760e [2020-11-28 04:39:45,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:39:45,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:39:45,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:39:45,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:39:45,881 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:39:45,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/../../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-11-28 04:39:45,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/data/dd60f024a/f8ba007870ce46118ae3e79e8ab32dfb/FLAG88d400320 [2020-11-28 04:39:46,523 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:39:46,524 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2020-11-28 04:39:46,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/data/dd60f024a/f8ba007870ce46118ae3e79e8ab32dfb/FLAG88d400320 [2020-11-28 04:39:46,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/data/dd60f024a/f8ba007870ce46118ae3e79e8ab32dfb [2020-11-28 04:39:46,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:39:46,906 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:39:46,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:46,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:39:46,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:39:46,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:46" (1/1) ... [2020-11-28 04:39:46,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10525b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:46, skipping insertion in model container [2020-11-28 04:39:46,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:39:46" (1/1) ... [2020-11-28 04:39:46,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:39:46,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:39:47,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:47,165 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:39:47,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:39:47,211 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:39:47,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47 WrapperNode [2020-11-28 04:39:47,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:39:47,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:47,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:39:47,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:39:47,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:39:47,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:39:47,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:39:47,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:39:47,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:39:47,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:39:47,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:39:47,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:39:47,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:39:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:39:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 04:39:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 04:39:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:39:47,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:39:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 04:39:47,922 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:39:47,922 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 04:39:47,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:47 BoogieIcfgContainer [2020-11-28 04:39:47,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:39:47,925 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:39:47,925 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:39:47,937 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:39:47,937 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:47" (1/1) ... [2020-11-28 04:39:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:39:47,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2020-11-28 04:39:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-28 04:39:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-11-28 04:39:48,000 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2020-11-28 04:39:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-28 04:39:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 04:39:48,182 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2020-11-28 04:39:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 04:39:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 04:39:48,340 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:48,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 10 states and 11 transitions. [2020-11-28 04:39:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-28 04:39:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 04:39:48,396 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:39:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:39:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:39:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:39:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 9 states and 10 transitions. [2020-11-28 04:39:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-11-28 04:39:48,666 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:39:48,666 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 5 iterations. [2020-11-28 04:39:48,672 INFO L765 CodeCheckObserver]: All specifications hold 4 specifications checked. All of them hold [2020-11-28 04:39:48,709 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:39:48,712 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:39:48,712 INFO L569 CodeCheckObserver]: Invariant with dag size 3 [2020-11-28 04:39:48,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:39:48 ImpRootNode [2020-11-28 04:39:48,717 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:39:48,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:39:48,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:39:48,718 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:39:48,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:39:47" (3/4) ... [2020-11-28 04:39:48,722 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:39:48,730 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 04:39:48,731 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 04:39:48,731 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 04:39:48,771 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0702845b-87f5-4c06-a5fb-9f4264452dfb/bin/ukojak/witness.graphml [2020-11-28 04:39:48,771 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:39:48,773 INFO L168 Benchmark]: Toolchain (without parser) took 1865.88 ms. Allocated memory is still 115.3 MB. Free memory was 81.8 MB in the beginning and 80.9 MB in the end (delta: 868.9 kB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:48,774 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:48,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.44 ms. Allocated memory is still 115.3 MB. Free memory was 81.7 MB in the beginning and 72.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:48,775 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.38 ms. Allocated memory is still 115.3 MB. Free memory was 72.5 MB in the beginning and 71.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:48,776 INFO L168 Benchmark]: Boogie Preprocessor took 42.49 ms. Allocated memory is still 115.3 MB. Free memory was 70.9 MB in the beginning and 69.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:48,777 INFO L168 Benchmark]: RCFGBuilder took 620.23 ms. Allocated memory is still 115.3 MB. Free memory was 69.7 MB in the beginning and 80.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:48,777 INFO L168 Benchmark]: CodeCheck took 792.23 ms. Allocated memory is still 115.3 MB. Free memory was 80.5 MB in the beginning and 83.9 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:39:48,778 INFO L168 Benchmark]: Witness Printer took 53.54 ms. Allocated memory is still 115.3 MB. Free memory was 83.7 MB in the beginning and 80.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:39:48,781 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: 0.6s, 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, 0.1s 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 0.26 ms. Allocated memory is still 69.2 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.44 ms. Allocated memory is still 115.3 MB. Free memory was 81.7 MB in the beginning and 72.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.38 ms. Allocated memory is still 115.3 MB. Free memory was 72.5 MB in the beginning and 71.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.49 ms. Allocated memory is still 115.3 MB. Free memory was 70.9 MB in the beginning and 69.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 620.23 ms. Allocated memory is still 115.3 MB. Free memory was 69.7 MB in the beginning and 80.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * CodeCheck took 792.23 ms. Allocated memory is still 115.3 MB. Free memory was 80.5 MB in the beginning and 83.9 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.54 ms. Allocated memory is still 115.3 MB. Free memory was 83.7 MB in the beginning and 80.9 MB in the end (delta: 2.7 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...