./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22bfff7e0bc9ff374f4201c2281f2aec36cb181e ............................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-28 04:36:35,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:36:35,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:36:35,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:36:35,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:36:35,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:36:35,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:36:35,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:36:35,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:36:35,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:36:35,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:36:35,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:36:35,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:36:35,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:36:35,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:36:35,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:36:35,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:36:35,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:36:35,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:36:35,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:36:35,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:36:35,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:36:35,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:36:35,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:36:35,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:36:35,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:36:35,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:36:35,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:36:35,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:36:35,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:36:35,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:36:35,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:36:35,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:36:35,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:36:35,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:36:35,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:36:35,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:36:35,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:36:35,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:36:35,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:36:35,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:36:35,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:36:35,361 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:36:35,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:36:35,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:36:35,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:36:35,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:36:35,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:36:35,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:36:35,365 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:36:35,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:36:35,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:36:35,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:36:35,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:36:35,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:36:35,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:36:35,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:36:35,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:36:35,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:36:35,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:36:35,368 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:36:35,368 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:36:35,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:36:35,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:36:35,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:36:35,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:36:35,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:36:35,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:36:35,370 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:36:35,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:36:35,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:36:35,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22bfff7e0bc9ff374f4201c2281f2aec36cb181e [2020-11-28 04:36:35,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:36:35,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:36:35,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:36:35,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:36:35,636 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:36:35,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2020-11-28 04:36:35,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/data/1f464a614/8d6696c7ac494214adfcf74a71b2b042/FLAGda47d121f [2020-11-28 04:36:36,257 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:36:36,258 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2020-11-28 04:36:36,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/data/1f464a614/8d6696c7ac494214adfcf74a71b2b042/FLAGda47d121f [2020-11-28 04:36:36,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/data/1f464a614/8d6696c7ac494214adfcf74a71b2b042 [2020-11-28 04:36:36,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:36:36,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:36:36,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:36:36,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:36:36,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:36:36,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:36,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396c7b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36, skipping insertion in model container [2020-11-28 04:36:36,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:36,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:36:36,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:36:36,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:36:36,895 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:36:36,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:36:36,939 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:36:36,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36 WrapperNode [2020-11-28 04:36:36,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:36:36,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:36:36,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:36:36,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:36:36,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:36,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:36,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:36:36,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:36:36,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:36:36,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:36:36,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:36,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:37,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:37,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:37,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:37,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:37,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... [2020-11-28 04:36:37,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:36:37,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:36:37,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:36:37,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:36:37,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:36:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:36:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:36:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-11-28 04:36:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-11-28 04:36:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:36:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:36:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-28 04:36:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-28 04:36:37,494 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:36:37,495 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:36:37,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:37 BoogieIcfgContainer [2020-11-28 04:36:37,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:36:37,498 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:36:37,498 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:36:37,511 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:36:37,512 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:37" (1/1) ... [2020-11-28 04:36:37,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:36:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:37,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2020-11-28 04:36:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 04:36:37,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:36:37,560 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2020-11-28 04:36:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-28 04:36:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:36:37,837 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:36:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:36:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:36:38,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 31 states and 37 transitions. [2020-11-28 04:36:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-11-28 04:36:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:36:38,533 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:36:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:36:38,570 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:36:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:36:38,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:36:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:36:38,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:36:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:36:38,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:36:38,694 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2020-11-28 04:36:38,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:36:38 ImpRootNode [2020-11-28 04:36:38,753 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:36:38,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:36:38,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:36:38,758 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:36:38,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:37" (3/4) ... [2020-11-28 04:36:38,761 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:36:38,812 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aeb627c2-f3fd-4aac-9662-5e274668228f/bin/ukojak/witness.graphml [2020-11-28 04:36:38,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:36:38,814 INFO L168 Benchmark]: Toolchain (without parser) took 2173.81 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 83.7 MB in the beginning and 98.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:38,815 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:38,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.50 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 85.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:38,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.24 ms. Allocated memory is still 109.1 MB. Free memory was 85.8 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:38,818 INFO L168 Benchmark]: Boogie Preprocessor took 41.25 ms. Allocated memory is still 109.1 MB. Free memory was 84.6 MB in the beginning and 83.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:38,818 INFO L168 Benchmark]: RCFGBuilder took 475.92 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 68.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:38,819 INFO L168 Benchmark]: CodeCheck took 1255.50 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 68.1 MB in the beginning and 100.6 MB in the end (delta: -32.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:36:38,820 INFO L168 Benchmark]: Witness Printer took 58.46 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 98.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:36:38,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 66 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 800 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] unsigned int input = __VERIFIER_nondet_uint(); [L25] CALL, EXPR id(input) VAL [\old(x)=2] [L10] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=1] [L17] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L18] CALL, EXPR id(x-1) VAL [\old(x)=0] [L10] COND TRUE x==0 [L10] return 0; VAL [\old(x)=0, \result=0, x=0] [L18] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L18] unsigned int ret = id(x-1) + 1; [L19] COND FALSE !(ret > 3) [L20] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L11] RET, EXPR id2(x-1) VAL [\old(x)=2, id2(x-1)=1, x=2] [L11] unsigned int ret = id2(x-1) + 1; [L12] COND FALSE !(ret > 3) [L13] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L25] RET, EXPR id(input) [L25] unsigned int result = id(input); [L26] COND TRUE result == 2 [L4] __assert_fail("0", "id2_b3_o2.c", 4, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 109.1 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.50 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 85.8 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.24 ms. Allocated memory is still 109.1 MB. Free memory was 85.8 MB in the beginning and 84.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.25 ms. Allocated memory is still 109.1 MB. Free memory was 84.6 MB in the beginning and 83.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 475.92 ms. Allocated memory is still 109.1 MB. Free memory was 83.4 MB in the beginning and 68.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 1255.50 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 68.1 MB in the beginning and 100.6 MB in the end (delta: -32.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.46 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 98.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...