./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_2x3-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_2x3-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/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 5417ea5971c5cfa3624e07fbe8bf33ef4632cb6f ......................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-01 07:57:38,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-01 07:57:38,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-01 07:57:38,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-01 07:57:38,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-01 07:57:38,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-01 07:57:38,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-01 07:57:38,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-01 07:57:38,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-01 07:57:38,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-01 07:57:38,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-01 07:57:38,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-01 07:57:38,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-01 07:57:38,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-01 07:57:38,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-01 07:57:38,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-01 07:57:38,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-01 07:57:38,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-01 07:57:38,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-01 07:57:38,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-01 07:57:38,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-01 07:57:38,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-01 07:57:38,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-01 07:57:38,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-01 07:57:38,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-01 07:57:38,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-01 07:57:38,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-01 07:57:38,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-01 07:57:38,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-01 07:57:38,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-01 07:57:38,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-01 07:57:38,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-01 07:57:38,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-01 07:57:38,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-01 07:57:38,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-01 07:57:38,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-01 07:57:38,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-01 07:57:38,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-01 07:57:38,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-01 07:57:38,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-01 07:57:38,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-01 07:57:38,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-12-01 07:57:38,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-01 07:57:38,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-01 07:57:38,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-01 07:57:38,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-12-01 07:57:38,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-01 07:57:38,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-01 07:57:38,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-01 07:57:38,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-01 07:57:38,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-01 07:57:38,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-01 07:57:38,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-01 07:57:38,826 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-12-01 07:57:38,826 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-12-01 07:57:38,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-01 07:57:38,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-01 07:57:38,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-12-01 07:57:38,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-01 07:57:38,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-01 07:57:38,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-01 07:57:38,827 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-12-01 07:57:38,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-01 07:57:38,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-01 07:57:38,827 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_d57fdf81-498d-45cd-9061-1bed5c87dad9/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 -> 5417ea5971c5cfa3624e07fbe8bf33ef4632cb6f [2019-12-01 07:57:38,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-01 07:57:38,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-01 07:57:38,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-01 07:57:38,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-01 07:57:38,947 INFO L275 PluginConnector]: CDTParser initialized [2019-12-01 07:57:38,947 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_2x3-1.c [2019-12-01 07:57:38,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/data/f0fab5d4a/8a393ca1748644148d75cdfaf1e63912/FLAGb37e293da [2019-12-01 07:57:39,442 INFO L306 CDTParser]: Found 1 translation units. [2019-12-01 07:57:39,442 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/sv-benchmarks/c/recursive-simple/sum_2x3-1.c [2019-12-01 07:57:39,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/data/f0fab5d4a/8a393ca1748644148d75cdfaf1e63912/FLAGb37e293da [2019-12-01 07:57:39,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/data/f0fab5d4a/8a393ca1748644148d75cdfaf1e63912 [2019-12-01 07:57:39,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-01 07:57:39,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-01 07:57:39,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-01 07:57:39,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-01 07:57:39,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-01 07:57:39,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446e037f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39, skipping insertion in model container [2019-12-01 07:57:39,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-01 07:57:39,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-01 07:57:39,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 07:57:39,574 INFO L203 MainTranslator]: Completed pre-run [2019-12-01 07:57:39,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-01 07:57:39,623 INFO L208 MainTranslator]: Completed translation [2019-12-01 07:57:39,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39 WrapperNode [2019-12-01 07:57:39,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-01 07:57:39,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-01 07:57:39,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-01 07:57:39,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-01 07:57:39,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-01 07:57:39,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-01 07:57:39,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-01 07:57:39,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-01 07:57:39,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-01 07:57:39,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-01 07:57:39,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-01 07:57:39,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-01 07:57:39,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 07:57:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/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 [2019-12-01 07:57:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-01 07:57:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-01 07:57:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-12-01 07:57:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-12-01 07:57:39,787 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-01 07:57:39,788 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-01 07:57:39,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:57:39 BoogieIcfgContainer [2019-12-01 07:57:39,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-01 07:57:39,789 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-12-01 07:57:39,789 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-12-01 07:57:39,796 INFO L275 PluginConnector]: CodeCheck initialized [2019-12-01 07:57:39,796 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:57:39" (1/1) ... [2019-12-01 07:57:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-01 07:57:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 07:57:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-12-01 07:57:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-12-01 07:57:39,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-01 07:57:39,830 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 07:57:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 07:57:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-01 07:57:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 07:57:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-12-01 07:57:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-12-01 07:57:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-01 07:57:40,063 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 07:57:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-01 07:57:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-01 07:57:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-12-01 07:57:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 32 transitions. [2019-12-01 07:57:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-12-01 07:57:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-01 07:57:40,366 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-12-01 07:57:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 07:57:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 07:57:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 07:57:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-01 07:57:40,435 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2019-12-01 07:57:40,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 07:57:40 ImpRootNode [2019-12-01 07:57:40,458 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-12-01 07:57:40,458 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-01 07:57:40,458 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-01 07:57:40,458 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-01 07:57:40,458 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 07:57:39" (3/4) ... [2019-12-01 07:57:40,460 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-01 07:57:40,494 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d57fdf81-498d-45cd-9061-1bed5c87dad9/bin/ukojak/witness.graphml [2019-12-01 07:57:40,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-01 07:57:40,496 INFO L168 Benchmark]: Toolchain (without parser) took 1038.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 946.2 MB in the beginning and 977.1 MB in the end (delta: -31.0 MB). Peak memory consumption was 68.1 MB. Max. memory is 11.5 GB. [2019-12-01 07:57:40,496 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 07:57:40,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-01 07:57:40,497 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 07:57:40,497 INFO L168 Benchmark]: Boogie Preprocessor took 9.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 07:57:40,497 INFO L168 Benchmark]: RCFGBuilder took 134.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-01 07:57:40,498 INFO L168 Benchmark]: CodeCheck took 669.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 977.1 MB in the end (delta: 99.7 MB). Peak memory consumption was 99.7 MB. Max. memory is 11.5 GB. [2019-12-01 07:57:40,498 INFO L168 Benchmark]: Witness Printer took 36.55 ms. Allocated memory is still 1.1 GB. Free memory is still 977.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-01 07:57:40,500 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: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 12 SDslu, 12 SDs, 0 SdLazy, 150 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 194 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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: 16]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int a = 2; [L13] int b = 3; [L14] CALL, EXPR sum(a, b) VAL [\old(m)=3, \old(n)=2] [L4] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=2, m=3, n=2] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=1] [L4] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=1, m=4, n=1] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=0] [L4] COND TRUE n <= 0 [L5] return m + n; VAL [\old(m)=5, \old(n)=0, \result=5, m=5, n=0] [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=1, m=4, n=1, sum(n - 1, m + 1)=5] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=2, m=3, n=2, sum(n - 1, m + 1)=5] [L7] return sum(n - 1, m + 1); [L14] RET, EXPR sum(a, b) [L14] int result = sum(a, b); [L15] COND TRUE result == a + b [L16] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.69 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * CodeCheck took 669.00 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 977.1 MB in the end (delta: 99.7 MB). Peak memory consumption was 99.7 MB. Max. memory is 11.5 GB. * Witness Printer took 36.55 ms. Allocated memory is still 1.1 GB. Free memory is still 977.1 MB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...