./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/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 03b834537fd67eba3e98faa1fce1fca3851f5bba ......................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-678e011 [2019-11-19 21:46:24,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 21:46:24,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 21:46:24,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 21:46:24,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 21:46:24,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 21:46:24,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 21:46:24,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 21:46:24,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 21:46:24,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 21:46:24,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 21:46:24,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 21:46:24,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 21:46:24,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 21:46:24,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 21:46:24,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 21:46:24,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 21:46:24,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 21:46:24,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 21:46:24,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 21:46:24,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 21:46:24,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 21:46:24,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 21:46:25,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 21:46:25,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 21:46:25,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 21:46:25,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 21:46:25,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 21:46:25,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 21:46:25,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 21:46:25,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 21:46:25,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 21:46:25,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 21:46:25,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 21:46:25,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 21:46:25,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 21:46:25,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 21:46:25,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 21:46:25,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 21:46:25,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 21:46:25,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 21:46:25,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-19 21:46:25,036 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 21:46:25,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 21:46:25,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-19 21:46:25,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-19 21:46:25,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 21:46:25,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 21:46:25,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 21:46:25,048 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 21:46:25,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 21:46:25,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 21:46:25,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 21:46:25,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 21:46:25,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 21:46:25,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 21:46:25,049 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 21:46:25,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 21:46:25,050 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 21:46:25,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 21:46:25,051 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-19 21:46:25,051 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-19 21:46:25,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 21:46:25,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 21:46:25,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 21:46:25,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 21:46:25,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 21:46:25,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 21:46:25,053 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-19 21:46:25,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 21:46:25,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 21:46:25,053 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_d9bc7128-8376-4701-b0dc-bf80b42017f3/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 -> 03b834537fd67eba3e98faa1fce1fca3851f5bba [2019-11-19 21:46:25,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 21:46:25,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 21:46:25,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 21:46:25,234 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 21:46:25,234 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 21:46:25,235 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/../../sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2019-11-19 21:46:25,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/data/aa2e87ddf/153338a1124945a59988a1af34678900/FLAGb09733de3 [2019-11-19 21:46:25,660 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 21:46:25,660 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/sv-benchmarks/c/recursive-simple/sum_10x0-2.c [2019-11-19 21:46:25,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/data/aa2e87ddf/153338a1124945a59988a1af34678900/FLAGb09733de3 [2019-11-19 21:46:25,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/data/aa2e87ddf/153338a1124945a59988a1af34678900 [2019-11-19 21:46:25,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 21:46:25,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 21:46:25,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 21:46:25,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 21:46:25,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 21:46:25,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:25,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389382a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25, skipping insertion in model container [2019-11-19 21:46:25,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:25,694 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 21:46:25,707 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 21:46:25,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:46:25,885 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 21:46:25,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 21:46:25,972 INFO L192 MainTranslator]: Completed translation [2019-11-19 21:46:25,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25 WrapperNode [2019-11-19 21:46:25,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 21:46:25,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 21:46:25,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 21:46:25,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 21:46:25,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:25,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 21:46:26,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 21:46:26,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 21:46:26,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 21:46:26,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... [2019-11-19 21:46:26,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 21:46:26,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 21:46:26,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 21:46:26,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 21:46:26,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:46:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-19 21:46:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 21:46:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 21:46:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-11-19 21:46:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-11-19 21:46:26,231 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 21:46:26,231 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 21:46:26,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:26 BoogieIcfgContainer [2019-11-19 21:46:26,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 21:46:26,233 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-19 21:46:26,233 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-19 21:46:26,242 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-19 21:46:26,243 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:26" (1/1) ... [2019-11-19 21:46:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 21:46:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2019-11-19 21:46:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-19 21:46:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 21:46:26,305 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:26,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 21:46:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 22 transitions. [2019-11-19 21:46:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-19 21:46:26,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 21:46:26,692 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-19 21:46:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 32 transitions. [2019-11-19 21:46:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2019-11-19 21:46:27,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-19 21:46:27,240 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 21:46:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:28,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 28 states and 44 transitions. [2019-11-19 21:46:28,088 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2019-11-19 21:46:28,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-19 21:46:28,091 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-19 21:46:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 33 states and 58 transitions. [2019-11-19 21:46:28,990 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 58 transitions. [2019-11-19 21:46:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-19 21:46:28,991 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:29,250 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-19 21:46:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 38 states and 74 transitions. [2019-11-19 21:46:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 74 transitions. [2019-11-19 21:46:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-19 21:46:29,863 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-19 21:46:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 43 states and 92 transitions. [2019-11-19 21:46:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 92 transitions. [2019-11-19 21:46:30,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-19 21:46:30,855 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-19 21:46:32,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 48 states and 112 transitions. [2019-11-19 21:46:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 112 transitions. [2019-11-19 21:46:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-19 21:46:32,011 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-19 21:46:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 53 states and 134 transitions. [2019-11-19 21:46:33,375 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 134 transitions. [2019-11-19 21:46:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-19 21:46:33,377 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2019-11-19 21:46:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 58 states and 158 transitions. [2019-11-19 21:46:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 158 transitions. [2019-11-19 21:46:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-19 21:46:34,913 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 21:46:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2019-11-19 21:46:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-19 21:46:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 63 states and 184 transitions. [2019-11-19 21:46:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 184 transitions. [2019-11-19 21:46:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-19 21:46:36,389 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-19 21:46:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:46:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:46:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:46:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 21:46:36,530 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2019-11-19 21:46:36,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 09:46:36 ImpRootNode [2019-11-19 21:46:36,583 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-19 21:46:36,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 21:46:36,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 21:46:36,584 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 21:46:36,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:46:26" (3/4) ... [2019-11-19 21:46:36,586 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 21:46:36,674 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d9bc7128-8376-4701-b0dc-bf80b42017f3/bin/ukojak/witness.graphml [2019-11-19 21:46:36,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 21:46:36,677 INFO L168 Benchmark]: Toolchain (without parser) took 10998.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -81.7 MB). Peak memory consumption was 124.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:46:36,678 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:46:36,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:46:36,680 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:46:36,680 INFO L168 Benchmark]: Boogie Preprocessor took 13.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 21:46:36,681 INFO L168 Benchmark]: RCFGBuilder took 218.26 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-19 21:46:36,682 INFO L168 Benchmark]: CodeCheck took 10350.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.1 MB). Peak memory consumption was 148.4 MB. Max. memory is 11.5 GB. [2019-11-19 21:46:36,683 INFO L168 Benchmark]: Witness Printer took 91.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-11-19 21:46:36,687 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: 10.2s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5632 SDtfs, 4092 SDslu, 5112 SDs, 0 SdLazy, 65812 SolverSat, 14828 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5208 GetRequests, 4804 SyntacticMatches, 252 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9343 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 87120 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: 16]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int a = 10; [L13] int b = 0; [L14] CALL, EXPR sum(a, b) VAL [\old(m)=0, \old(n)=10] [L4] COND FALSE !(n <= 0) VAL [\old(m)=0, \old(n)=10, m=0, n=10] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=9] [L4] COND FALSE !(n <= 0) VAL [\old(m)=1, \old(n)=9, m=1, n=9] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=8] [L4] COND FALSE !(n <= 0) VAL [\old(m)=2, \old(n)=8, m=2, n=8] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=7] [L4] COND FALSE !(n <= 0) VAL [\old(m)=3, \old(n)=7, m=3, n=7] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=6] [L4] COND FALSE !(n <= 0) VAL [\old(m)=4, \old(n)=6, m=4, n=6] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=5] [L4] COND FALSE !(n <= 0) VAL [\old(m)=5, \old(n)=5, m=5, n=5] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=4] [L4] COND FALSE !(n <= 0) VAL [\old(m)=6, \old(n)=4, m=6, n=4] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=3] [L4] COND FALSE !(n <= 0) VAL [\old(m)=7, \old(n)=3, m=7, n=3] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=2] [L4] COND FALSE !(n <= 0) VAL [\old(m)=8, \old(n)=2, m=8, n=2] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=1] [L4] COND FALSE !(n <= 0) VAL [\old(m)=9, \old(n)=1, m=9, n=1] [L7] CALL, EXPR sum(n - 1, m + 1) VAL [\old(m)=10, \old(n)=0] [L4] COND TRUE n <= 0 [L5] return m + n; VAL [\old(m)=10, \old(n)=0, \result=10, m=10, n=0] [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=9, \old(n)=1, m=9, n=1, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=8, \old(n)=2, m=8, n=2, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=7, \old(n)=3, m=7, n=3, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=6, \old(n)=4, m=6, n=4, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=5, \old(n)=5, m=5, n=5, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=4, \old(n)=6, m=4, n=6, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=3, \old(n)=7, m=3, n=7, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=2, \old(n)=8, m=2, n=8, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=1, \old(n)=9, m=1, n=9, sum(n - 1, m + 1)=10] [L7] return sum(n - 1, m + 1); [L7] RET, EXPR sum(n - 1, m + 1) VAL [\old(m)=0, \old(n)=10, m=0, n=10, sum(n - 1, m + 1)=10] [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 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.78 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 13.84 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 218.26 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * CodeCheck took 10350.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 61.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 87.1 MB). Peak memory consumption was 148.4 MB. Max. memory is 11.5 GB. * Witness Printer took 91.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...