./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/gcd01-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0497b69437c9ebb889888bdb31aaefcc8eaad029 .............................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 11:12:12,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:12:12,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:12:12,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:12:12,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:12:12,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:12:12,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:12:12,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:12:12,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:12:12,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:12:12,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:12:12,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:12:12,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:12:12,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:12:12,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:12:12,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:12:12,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:12:12,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:12:12,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:12:12,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:12:12,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:12:12,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:12:12,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:12:12,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:12:12,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:12:12,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:12:12,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:12:12,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:12:12,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:12:12,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:12:12,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:12:12,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:12:12,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:12:12,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:12:12,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:12:12,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:12:12,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:12:12,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:12:12,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:12:12,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:12:12,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:12:12,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 11:12:12,379 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:12:12,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:12:12,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 11:12:12,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 11:12:12,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:12:12,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:12:12,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:12:12,382 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:12:12,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:12:12,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:12:12,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:12:12,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:12:12,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:12:12,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:12:12,383 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:12:12,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:12:12,384 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:12:12,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:12:12,384 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 11:12:12,384 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 11:12:12,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:12:12,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:12:12,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 11:12:12,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:12:12,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:12:12,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:12:12,386 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 11:12:12,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:12:12,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:12:12,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_15b11285-1300-4344-8471-32004386dccb/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 ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0497b69437c9ebb889888bdb31aaefcc8eaad029 [2019-11-20 11:12:12,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:12:12,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:12:12,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:12:12,543 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:12:12,545 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:12:12,546 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/../../sv-benchmarks/c/recursive/gcd01-1.c [2019-11-20 11:12:12,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/data/761436d84/13d23304460b40739dc0bb56888718c7/FLAG1054df291 [2019-11-20 11:12:13,001 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:12:13,002 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/sv-benchmarks/c/recursive/gcd01-1.c [2019-11-20 11:12:13,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/data/761436d84/13d23304460b40739dc0bb56888718c7/FLAG1054df291 [2019-11-20 11:12:13,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/data/761436d84/13d23304460b40739dc0bb56888718c7 [2019-11-20 11:12:13,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:12:13,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:12:13,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:12:13,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:12:13,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:12:13,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568d2c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13, skipping insertion in model container [2019-11-20 11:12:13,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,420 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:12:13,435 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:12:13,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:12:13,596 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:12:13,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:12:13,688 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:12:13,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13 WrapperNode [2019-11-20 11:12:13,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:12:13,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:12:13,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:12:13,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:12:13,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:12:13,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:12:13,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:12:13,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:12:13,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... [2019-11-20 11:12:13,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:12:13,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:12:13,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:12:13,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:12:13,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:12:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/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 [2019-11-20 11:12:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2019-11-20 11:12:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2019-11-20 11:12:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:12:13,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:12:14,024 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:12:14,024 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 11:12:14,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:14 BoogieIcfgContainer [2019-11-20 11:12:14,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:12:14,025 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 11:12:14,026 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 11:12:14,036 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 11:12:14,036 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:14" (1/1) ... [2019-11-20 11:12:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:12:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2019-11-20 11:12:14,094 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2019-11-20 11:12:14,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 11:12:14,099 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 11:12:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:12:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:12:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 22 states and 32 transitions. [2019-11-20 11:12:14,450 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2019-11-20 11:12:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-20 11:12:14,450 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 11:12:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:12:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:12:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:14,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 40 transitions. [2019-11-20 11:12:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 40 transitions. [2019-11-20 11:12:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 11:12:14,833 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 11:12:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:12:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:12:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 27 states and 41 transitions. [2019-11-20 11:12:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2019-11-20 11:12:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 11:12:15,345 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 11:12:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:12:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:12:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 27 states and 40 transitions. [2019-11-20 11:12:15,908 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 40 transitions. [2019-11-20 11:12:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 11:12:15,915 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 11:12:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:12:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 11:12:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 28 states and 41 transitions. [2019-11-20 11:12:16,184 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2019-11-20 11:12:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 11:12:16,186 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 11:12:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:12:16,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-20 11:12:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 11:12:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 21 states and 30 transitions. [2019-11-20 11:12:16,327 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-11-20 11:12:16,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 11:12:16,328 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2019-11-20 11:12:16,335 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2019-11-20 11:12:16,392 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2019-11-20 11:12:16,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 11:12:16 ImpRootNode [2019-11-20 11:12:16,395 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 11:12:16,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:12:16,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:12:16,396 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:12:16,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:12:14" (3/4) ... [2019-11-20 11:12:16,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 11:12:16,404 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2019-11-20 11:12:16,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-20 11:12:16,408 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 11:12:16,459 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15b11285-1300-4344-8471-32004386dccb/bin/ukojak/witness.graphml [2019-11-20 11:12:16,459 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:12:16,461 INFO L168 Benchmark]: Toolchain (without parser) took 3055.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:12:16,461 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:12:16,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:12:16,463 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:12:16,463 INFO L168 Benchmark]: Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:12:16,464 INFO L168 Benchmark]: RCFGBuilder took 287.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:12:16,464 INFO L168 Benchmark]: CodeCheck took 2369.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:12:16,465 INFO L168 Benchmark]: Witness Printer took 63.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:12:16,468 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 688 SDtfs, 272 SDslu, 416 SDs, 0 SdLazy, 2304 SolverSat, 648 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 923 GetRequests, 853 SyntacticMatches, 20 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3919 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 18/18 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: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 287.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * CodeCheck took 2369.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -6.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 63.45 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...