./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/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 0aae719d835771c4602eac7b24cfefa200f147c0 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 10:16:45,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 10:16:45,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 10:16:45,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 10:16:45,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 10:16:45,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 10:16:45,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 10:16:45,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 10:16:45,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 10:16:45,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 10:16:45,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 10:16:45,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 10:16:45,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 10:16:45,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 10:16:45,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 10:16:45,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 10:16:45,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 10:16:45,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 10:16:45,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 10:16:45,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 10:16:45,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 10:16:45,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 10:16:45,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 10:16:45,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 10:16:45,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 10:16:45,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 10:16:45,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 10:16:45,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 10:16:45,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 10:16:45,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 10:16:45,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 10:16:45,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 10:16:45,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 10:16:45,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 10:16:45,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 10:16:45,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 10:16:45,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 10:16:45,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 10:16:45,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 10:16:45,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 10:16:45,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 10:16:45,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-10-22 10:16:45,645 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 10:16:45,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 10:16:45,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 10:16:45,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-10-22 10:16:45,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 10:16:45,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 10:16:45,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 10:16:45,648 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 10:16:45,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 10:16:45,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 10:16:45,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 10:16:45,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 10:16:45,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 10:16:45,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 10:16:45,649 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 10:16:45,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 10:16:45,649 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 10:16:45,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 10:16:45,649 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-10-22 10:16:45,650 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-10-22 10:16:45,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 10:16:45,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 10:16:45,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-10-22 10:16:45,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 10:16:45,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 10:16:45,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 10:16:45,651 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-10-22 10:16:45,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 10:16:45,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 10:16:45,652 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/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/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 -> 0aae719d835771c4602eac7b24cfefa200f147c0 [2019-10-22 10:16:45,676 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 10:16:45,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 10:16:45,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 10:16:45,692 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 10:16:45,693 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 10:16:45,693 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2019-10-22 10:16:45,742 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/data/0228641dc/1a7aa3db79154019b47e3d3d35fa32cf/FLAGdd2ad267b [2019-10-22 10:16:46,114 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 10:16:46,114 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2019-10-22 10:16:46,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/data/0228641dc/1a7aa3db79154019b47e3d3d35fa32cf/FLAGdd2ad267b [2019-10-22 10:16:46,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/data/0228641dc/1a7aa3db79154019b47e3d3d35fa32cf [2019-10-22 10:16:46,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 10:16:46,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 10:16:46,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 10:16:46,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 10:16:46,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 10:16:46,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d78510b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46, skipping insertion in model container [2019-10-22 10:16:46,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,148 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 10:16:46,163 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 10:16:46,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:16:46,336 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 10:16:46,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 10:16:46,448 INFO L192 MainTranslator]: Completed translation [2019-10-22 10:16:46,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46 WrapperNode [2019-10-22 10:16:46,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 10:16:46,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 10:16:46,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 10:16:46,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 10:16:46,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 10:16:46,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 10:16:46,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 10:16:46,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 10:16:46,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 10:16:46,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 10:16:46,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 10:16:46,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 10:16:46,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 10:16:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/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 [2019-10-22 10:16:46,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 10:16:46,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 10:16:46,545 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 10:16:46,545 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 10:16:46,662 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 10:16:46,662 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 10:16:46,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:16:46 BoogieIcfgContainer [2019-10-22 10:16:46,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 10:16:46,664 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-10-22 10:16:46,664 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-10-22 10:16:46,681 INFO L275 PluginConnector]: CodeCheck initialized [2019-10-22 10:16:46,682 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:16:46" (1/1) ... [2019-10-22 10:16:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 10:16:46,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:46,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-10-22 10:16:46,739 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-10-22 10:16:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 10:16:46,748 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 10:16:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-10-22 10:16:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-10-22 10:16:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 10:16:47,157 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 10:16:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 23 states and 32 transitions. [2019-10-22 10:16:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-10-22 10:16:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 10:16:47,589 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 10:16:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 28 states and 44 transitions. [2019-10-22 10:16:48,185 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2019-10-22 10:16:48,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 10:16:48,186 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 10:16:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 33 states and 58 transitions. [2019-10-22 10:16:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2019-10-22 10:16:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 10:16:48,881 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 10:16:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 38 states and 74 transitions. [2019-10-22 10:16:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2019-10-22 10:16:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 10:16:49,625 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 10:16:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:50,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 43 states and 92 transitions. [2019-10-22 10:16:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 92 transitions. [2019-10-22 10:16:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 10:16:50,319 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-22 10:16:51,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 48 states and 112 transitions. [2019-10-22 10:16:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 112 transitions. [2019-10-22 10:16:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-22 10:16:51,135 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-22 10:16:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 53 states and 134 transitions. [2019-10-22 10:16:52,116 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 134 transitions. [2019-10-22 10:16:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-22 10:16:52,118 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-10-22 10:16:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 58 states and 158 transitions. [2019-10-22 10:16:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 158 transitions. [2019-10-22 10:16:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-10-22 10:16:53,208 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 10:16:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-10-22 10:16:54,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-10-22 10:16:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 63 states and 184 transitions. [2019-10-22 10:16:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 184 transitions. [2019-10-22 10:16:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 10:16:54,396 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-10-22 10:16:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:16:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:16:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:16:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 10:16:54,552 WARN L489 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2019-10-22 10:16:54,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.10 10:16:54 ImpRootNode [2019-10-22 10:16:54,622 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-10-22 10:16:54,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 10:16:54,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 10:16:54,623 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 10:16:54,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:16:46" (3/4) ... [2019-10-22 10:16:54,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 10:16:54,696 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a878cacc-57a4-47d2-9782-1961524040cd/bin/ukojak/witness.graphml [2019-10-22 10:16:54,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 10:16:54,698 INFO L168 Benchmark]: Toolchain (without parser) took 8563.85 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 293.6 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 158.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:16:54,698 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-10-22 10:16:54,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:16:54,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.60 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. [2019-10-22 10:16:54,700 INFO L168 Benchmark]: Boogie Preprocessor took 13.34 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. [2019-10-22 10:16:54,700 INFO L168 Benchmark]: RCFGBuilder took 170.39 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: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-10-22 10:16:54,700 INFO L168 Benchmark]: CodeCheck took 7958.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 165.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 186.3 MB. Max. memory is 11.5 GB. [2019-10-22 10:16:54,701 INFO L168 Benchmark]: Witness Printer took 73.73 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-10-22 10:16:54,711 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, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5632 SDtfs, 4092 SDslu, 5112 SDs, 0 SdLazy, 66322 SolverSat, 14318 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5262 GetRequests, 4877 SyntacticMatches, 233 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8286 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 54340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 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 - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int input = 10; [L11] CALL, EXPR id(input) VAL [\old(x)=10] [L5] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L6] CALL, EXPR id(x-1) VAL [\old(x)=9] [L5] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L6] CALL, EXPR id(x-1) VAL [\old(x)=8] [L5] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L6] CALL, EXPR id(x-1) VAL [\old(x)=7] [L5] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L6] CALL, EXPR id(x-1) VAL [\old(x)=6] [L5] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L6] CALL, EXPR id(x-1) VAL [\old(x)=5] [L5] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L6] CALL, EXPR id(x-1) VAL [\old(x)=4] [L5] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L6] CALL, EXPR id(x-1) VAL [\old(x)=3] [L5] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L6] CALL, EXPR id(x-1) VAL [\old(x)=2] [L5] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L6] CALL, EXPR id(x-1) VAL [\old(x)=1] [L5] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L6] CALL, EXPR id(x-1) VAL [\old(x)=0] [L5] COND TRUE x==0 [L5] return 0; VAL [\old(x)=0, \result=0, x=0] [L6] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 314.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.60 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 13.34 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. * RCFGBuilder took 170.39 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: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * CodeCheck took 7958.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 165.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.2 MB). Peak memory consumption was 186.3 MB. Max. memory is 11.5 GB. * Witness Printer took 73.73 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...