./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive/gcd01-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d6f4e1dd3818e9d3e8c54653af66359ead501b84 ........................................................................................................................................................................................................................................................ 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 04:40:03,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:40:03,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:40:03,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:40:03,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:40:03,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:40:03,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:40:03,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:40:03,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:40:03,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:40:03,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:40:03,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:40:03,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:40:03,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:40:03,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:40:03,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:40:03,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:40:03,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:40:03,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:40:03,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:40:03,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:40:03,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:40:03,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:40:03,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:40:03,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:40:03,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:40:03,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:40:03,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:40:03,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:40:03,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:40:03,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:40:03,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:40:03,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:40:03,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:40:03,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:40:03,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:40:03,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:40:03,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:40:03,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:40:03,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:40:03,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:40:03,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:40:03,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:40:03,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:40:03,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:40:03,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:40:03,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:40:03,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:40:03,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:40:03,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:40:03,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:40:03,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:40:03,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:40:03,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:40:03,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:40:03,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:40:03,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:40:03,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:40:03,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:40:03,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:40:03,729 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:40:03,729 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:40:03,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:40:03,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:40:03,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:40:03,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:40:03,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:40:03,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:40:03,731 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:40:03,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:40:03,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:40:03,734 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_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4e1dd3818e9d3e8c54653af66359ead501b84 [2020-11-28 04:40:04,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:40:04,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:40:04,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:40:04,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:40:04,132 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:40:04,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/../../sv-benchmarks/c/recursive/gcd01-1.c [2020-11-28 04:40:04,251 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/data/162370ace/bb4f3a6e1a5143619ab2d3dae9c985c1/FLAGab0afe3c0 [2020-11-28 04:40:04,845 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:40:04,846 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/sv-benchmarks/c/recursive/gcd01-1.c [2020-11-28 04:40:04,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/data/162370ace/bb4f3a6e1a5143619ab2d3dae9c985c1/FLAGab0afe3c0 [2020-11-28 04:40:05,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/data/162370ace/bb4f3a6e1a5143619ab2d3dae9c985c1 [2020-11-28 04:40:05,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:40:05,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:40:05,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:05,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:40:05,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:40:05,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f763c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05, skipping insertion in model container [2020-11-28 04:40:05,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:40:05,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:40:05,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:05,496 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:40:05,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:40:05,551 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:40:05,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05 WrapperNode [2020-11-28 04:40:05,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:40:05,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:05,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:40:05,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:40:05,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:40:05,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:40:05,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:40:05,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:40:05,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... [2020-11-28 04:40:05,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:40:05,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:40:05,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:40:05,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:40:05,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:40:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/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 04:40:05,755 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-11-28 04:40:05,756 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-11-28 04:40:05,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:40:05,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:40:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:40:05,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:40:06,288 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:40:06,289 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:40:06,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:06 BoogieIcfgContainer [2020-11-28 04:40:06,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:40:06,292 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:40:06,292 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:40:06,305 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:40:06,306 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:06" (1/1) ... [2020-11-28 04:40:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:40:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 20 states and 27 transitions. [2020-11-28 04:40:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 27 transitions. [2020-11-28 04:40:06,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 04:40:06,382 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:06,734 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 04:40:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 22 states and 32 transitions. [2020-11-28 04:40:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-11-28 04:40:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 04:40:06,954 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:07,124 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 04:40:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 40 transitions. [2020-11-28 04:40:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 40 transitions. [2020-11-28 04:40:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:40:07,580 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:40:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 39 transitions. [2020-11-28 04:40:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2020-11-28 04:40:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 04:40:08,072 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 04:40:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 38 transitions. [2020-11-28 04:40:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2020-11-28 04:40:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 04:40:08,643 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:40:08,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:08,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 27 states and 39 transitions. [2020-11-28 04:40:08,846 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2020-11-28 04:40:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 04:40:08,848 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:40:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:40:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 04:40:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:40:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 20 states and 28 transitions. [2020-11-28 04:40:09,062 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2020-11-28 04:40:09,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 04:40:09,063 WARN L425 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2020-11-28 04:40:09,070 INFO L765 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2020-11-28 04:40:09,172 INFO L569 CodeCheckObserver]: Invariant with dag size 1 [2020-11-28 04:40:09,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:40:09 ImpRootNode [2020-11-28 04:40:09,179 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:40:09,183 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:40:09,183 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:40:09,184 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:40:09,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:40:06" (3/4) ... [2020-11-28 04:40:09,189 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 04:40:09,194 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd [2020-11-28 04:40:09,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-28 04:40:09,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 04:40:09,200 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:40:09,201 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 04:40:09,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bb0e256e-0576-4e34-8d7a-b301a71ff3fc/bin/ukojak/witness.graphml [2020-11-28 04:40:09,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:40:09,276 INFO L168 Benchmark]: Toolchain (without parser) took 4058.10 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.3 MB in the beginning and 81.0 MB in the end (delta: -6.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,277 INFO L168 Benchmark]: CDTParser took 14.45 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 55.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.82 ms. Allocated memory is still 104.9 MB. Free memory was 74.3 MB in the beginning and 82.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,278 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.87 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 81.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:40:09,279 INFO L168 Benchmark]: Boogie Preprocessor took 47.49 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 80.1 MB in the end (delta: 993.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,280 INFO L168 Benchmark]: RCFGBuilder took 639.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 65.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,280 INFO L168 Benchmark]: CodeCheck took 2886.71 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 83.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,281 INFO L168 Benchmark]: Witness Printer took 91.45 ms. Allocated memory is still 125.8 MB. Free memory was 83.1 MB in the beginning and 81.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:40:09,284 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 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 688 SDtfs, 240 SDslu, 384 SDs, 0 SdLazy, 2008 SolverSat, 704 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 859 GetRequests, 802 SyntacticMatches, 17 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3739 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: 3]: 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: 30]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 14.45 ms. Allocated memory is still 83.9 MB. Free memory was 41.4 MB in the beginning and 55.7 MB in the end (delta: -14.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.82 ms. Allocated memory is still 104.9 MB. Free memory was 74.3 MB in the beginning and 82.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.87 ms. Allocated memory is still 104.9 MB. Free memory was 82.1 MB in the beginning and 81.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.49 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 80.1 MB in the end (delta: 993.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 639.23 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 65.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 2886.71 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 83.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Witness Printer took 91.45 ms. Allocated memory is still 125.8 MB. Free memory was 83.1 MB in the beginning and 81.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! Received shutdown request...