./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/sum_20x0_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/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 17db2a72807ac377d533a347dbb668103ea580a0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 09:10:52,658 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:10:52,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:10:52,667 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:10:52,667 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:10:52,668 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:10:52,668 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:10:52,669 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:10:52,670 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:10:52,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:10:52,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:10:52,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:10:52,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:10:52,673 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:10:52,674 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:10:52,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:10:52,675 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:10:52,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:10:52,678 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:10:52,679 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:10:52,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:10:52,680 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:10:52,682 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:10:52,682 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:10:52,682 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:10:52,683 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:10:52,684 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:10:52,684 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:10:52,685 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:10:52,686 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:10:52,686 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:10:52,686 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:10:52,686 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:10:52,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:10:52,687 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:10:52,688 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:10:52,688 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 09:10:52,695 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:10:52,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:10:52,695 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:10:52,696 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 09:10:52,696 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:10:52,696 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:10:52,696 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:10:52,696 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:10:52,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:10:52,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:10:52,698 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 09:10:52,698 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 09:10:52,698 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:10:52,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:10:52,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 09:10:52,698 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:10:52,699 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:10:52,699 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:10:52,699 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 09:10:52,699 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:10:52,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:10:52,699 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/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 -> 17db2a72807ac377d533a347dbb668103ea580a0 [2018-11-18 09:10:52,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:10:52,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:10:52,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:10:52,742 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:10:52,742 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:10:52,743 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/../../sv-benchmarks/c/recursive-simple/sum_20x0_false-unreach-call_true-termination.c [2018-11-18 09:10:52,790 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/data/9ff5b3fae/a59f5203f1434deea8724caf84e4a550/FLAG5d8c6b9fe [2018-11-18 09:10:53,132 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:10:53,133 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/sv-benchmarks/c/recursive-simple/sum_20x0_false-unreach-call_true-termination.c [2018-11-18 09:10:53,138 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/data/9ff5b3fae/a59f5203f1434deea8724caf84e4a550/FLAG5d8c6b9fe [2018-11-18 09:10:53,553 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/data/9ff5b3fae/a59f5203f1434deea8724caf84e4a550 [2018-11-18 09:10:53,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:10:53,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:10:53,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:10:53,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:10:53,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:10:53,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602e9054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53, skipping insertion in model container [2018-11-18 09:10:53,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:10:53,580 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:10:53,682 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:10:53,684 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:10:53,693 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:10:53,701 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:10:53,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53 WrapperNode [2018-11-18 09:10:53,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:10:53,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:10:53,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:10:53,702 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:10:53,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:10:53,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:10:53,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:10:53,720 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:10:53,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:10:53,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:10:53,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:10:53,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:10:53,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:10:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/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 [2018-11-18 09:10:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:10:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:10:53,802 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2018-11-18 09:10:53,802 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2018-11-18 09:10:53,912 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:10:53,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:53 BoogieIcfgContainer [2018-11-18 09:10:53,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:10:53,913 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 09:10:53,913 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 09:10:53,919 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 09:10:53,920 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:53" (1/1) ... [2018-11-18 09:10:53,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:10:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2018-11-18 09:10:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2018-11-18 09:10:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 09:10:53,968 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:10:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:54,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 16 states and 18 transitions. [2018-11-18 09:10:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-11-18 09:10:54,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 09:10:54,151 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 09:10:54,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 19 states and 23 transitions. [2018-11-18 09:10:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2018-11-18 09:10:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 09:10:54,343 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 09:10:54,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 22 states and 29 transitions. [2018-11-18 09:10:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2018-11-18 09:10:54,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 09:10:54,463 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:10:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 25 states and 36 transitions. [2018-11-18 09:10:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2018-11-18 09:10:54,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-18 09:10:54,622 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-18 09:10:54,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 28 states and 44 transitions. [2018-11-18 09:10:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2018-11-18 09:10:54,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 09:10:54,768 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-18 09:10:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 31 states and 53 transitions. [2018-11-18 09:10:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 53 transitions. [2018-11-18 09:10:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 09:10:54,935 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-18 09:10:55,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 34 states and 63 transitions. [2018-11-18 09:10:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 63 transitions. [2018-11-18 09:10:55,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 09:10:55,099 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-18 09:10:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 37 states and 74 transitions. [2018-11-18 09:10:55,242 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 74 transitions. [2018-11-18 09:10:55,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-18 09:10:55,243 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-18 09:10:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 40 states and 86 transitions. [2018-11-18 09:10:55,464 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 86 transitions. [2018-11-18 09:10:55,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-18 09:10:55,466 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,527 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-18 09:10:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 43 states and 99 transitions. [2018-11-18 09:10:55,620 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 99 transitions. [2018-11-18 09:10:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-18 09:10:55,621 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-11-18 09:10:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 46 states and 113 transitions. [2018-11-18 09:10:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 113 transitions. [2018-11-18 09:10:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-11-18 09:10:55,779 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-11-18 09:10:55,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 49 states and 128 transitions. [2018-11-18 09:10:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 128 transitions. [2018-11-18 09:10:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-18 09:10:55,980 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-11-18 09:10:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 52 states and 144 transitions. [2018-11-18 09:10:56,206 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 144 transitions. [2018-11-18 09:10:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-18 09:10:56,207 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:56,298 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-11-18 09:10:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 55 states and 161 transitions. [2018-11-18 09:10:56,472 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 161 transitions. [2018-11-18 09:10:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-18 09:10:56,474 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-11-18 09:10:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:56,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 58 states and 179 transitions. [2018-11-18 09:10:56,730 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 179 transitions. [2018-11-18 09:10:56,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-18 09:10:56,731 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-18 09:10:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 61 states and 198 transitions. [2018-11-18 09:10:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 198 transitions. [2018-11-18 09:10:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-18 09:10:57,013 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-11-18 09:10:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 64 states and 218 transitions. [2018-11-18 09:10:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 218 transitions. [2018-11-18 09:10:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-18 09:10:57,266 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,323 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2018-11-18 09:10:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 67 states and 239 transitions. [2018-11-18 09:10:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 239 transitions. [2018-11-18 09:10:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-18 09:10:57,488 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2018-11-18 09:10:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 70 states and 261 transitions. [2018-11-18 09:10:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 261 transitions. [2018-11-18 09:10:57,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-18 09:10:57,737 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:10:57,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2018-11-18 09:10:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 09:10:57,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 73 states and 284 transitions. [2018-11-18 09:10:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 284 transitions. [2018-11-18 09:10:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-18 09:10:57,959 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 09:10:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:10:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:10:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:10:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:10:58,108 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 21 iterations. [2018-11-18 09:10:58,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 09:10:58 ImpRootNode [2018-11-18 09:10:58,150 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 09:10:58,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:10:58,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:10:58,151 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:10:58,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:10:53" (3/4) ... [2018-11-18 09:10:58,153 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 09:10:58,213 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b33de305-6583-4c16-8240-8650df9e6172/bin-2019/ukojak/witness.graphml [2018-11-18 09:10:58,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:10:58,214 INFO L168 Benchmark]: Toolchain (without parser) took 4658.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 959.3 MB in the beginning and 952.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 193.1 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:58,216 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:10:58,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:58,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.78 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:58,217 INFO L168 Benchmark]: Boogie Preprocessor took 9.39 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:10:58,217 INFO L168 Benchmark]: RCFGBuilder took 183.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:58,217 INFO L168 Benchmark]: CodeCheck took 4237.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.1 GB in the beginning and 958.2 MB in the end (delta: 170.3 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:58,218 INFO L168 Benchmark]: Witness Printer took 63.25 ms. Allocated memory is still 1.2 GB. Free memory was 958.2 MB in the beginning and 952.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:10:58,220 INFO L336 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, 16 locations, 1 error locations. UNSAFE Result, 4.1s OverallTime, 21 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7340032 SDtfs, 6815736 SDslu, 11010032 SDs, 0 SdLazy, 31981374 SolverSat, 5767162 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20678 GetRequests, 19628 SyntacticMatches, 968 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2298 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1449 NumberOfCodeBlocks, 1449 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1300 ConstructedInterpolants, 0 QuantifiedInterpolants, 282240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3800/7600 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 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 = 20; [L13] int b = 0; [L14] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=20] [L4] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=20, m=0, n=20] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=19] [L4] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=19, m=1, n=19] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=18] [L4] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=18, m=2, n=18] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=17] [L4] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=17, m=3, n=17] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=16] [L4] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=16, m=4, n=16] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=15] [L4] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=15, m=5, n=15] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=14] [L4] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=14, m=6, n=14] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=13] [L4] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=13, m=7, n=13] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=12] [L4] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=12, m=8, n=12] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=11] [L4] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=11, m=9, n=11] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=10] [L4] COND FALSE !(n <= 0) VAL [\old(m)=10, \old(n)=10, m=10, n=10] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=9] [L4] COND FALSE !(n <= 0) VAL [\old(m)=11, \old(n)=9, m=11, n=9] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=8] [L4] COND FALSE !(n <= 0) VAL [\old(m)=12, \old(n)=8, m=12, n=8] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=7] [L4] COND FALSE !(n <= 0) VAL [\old(m)=13, \old(n)=7, m=13, n=7] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=6] [L4] COND FALSE !(n <= 0) VAL [\old(m)=14, \old(n)=6, m=14, n=6] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=5] [L4] COND FALSE !(n <= 0) VAL [\old(m)=15, \old(n)=5, m=15, n=5] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=16, \old(n)=4] [L4] COND FALSE !(n <= 0) VAL [\old(m)=16, \old(n)=4, m=16, n=4] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=17, \old(n)=3] [L4] COND FALSE !(n <= 0) VAL [\old(m)=17, \old(n)=3, m=17, n=3] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=18, \old(n)=2] [L4] COND FALSE !(n <= 0) VAL [\old(m)=18, \old(n)=2, m=18, n=2] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=19, \old(n)=1] [L4] COND FALSE !(n <= 0) VAL [\old(m)=19, \old(n)=1, m=19, n=1] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=20, \old(n)=0] [L4] COND TRUE n <= 0 [L5] RET return m + n; VAL [\old(m)=20, \old(n)=0, \result=20, m=20, n=0] [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=19, \old(n)=1, m=19, n=1, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=18, \old(n)=2, m=18, n=2, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=17, \old(n)=3, m=17, n=3, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=16, \old(n)=4, m=16, n=4, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=15, \old(n)=5, m=15, n=5, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=14, \old(n)=6, m=14, n=6, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=13, \old(n)=7, m=13, n=7, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=12, \old(n)=8, m=12, n=8, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=11, \old(n)=9, m=11, n=9, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=10, m=10, n=10, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=11, m=9, n=11, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=12, m=8, n=12, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=13, m=7, n=13, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=14, m=6, n=14, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=15, m=5, n=15, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=16, m=4, n=16, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=17, m=3, n=17, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=18, m=2, n=18, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=19, m=1, n=19, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L7] EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=20, m=0, n=20, sum(n - 1, m + 1)=20] [L7] RET return sum(n - 1, m + 1); [L14] 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 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.71 ms. Allocated memory is still 1.0 GB. Free memory was 959.3 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.78 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.39 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 183.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -182.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * CodeCheck took 4237.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.1 GB in the beginning and 958.2 MB in the end (delta: 170.3 MB). Peak memory consumption was 218.0 MB. Max. memory is 11.5 GB. * Witness Printer took 63.25 ms. Allocated memory is still 1.2 GB. Free memory was 958.2 MB in the beginning and 952.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...