./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.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_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/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 990c50250359c7452ab1ceec7da37e6f04bc6511 .............................................................................................................................................................................................................................................................................................................. 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 [2020-11-30 01:10:32,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:10:32,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:10:32,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:10:32,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:10:32,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:10:32,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:10:32,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:10:32,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:10:32,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:10:32,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:10:32,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:10:32,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:10:32,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:10:32,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:10:32,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:10:32,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:10:32,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:10:32,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:10:32,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:10:32,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:10:32,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:10:32,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:10:32,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:10:32,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:10:32,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:10:32,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:10:32,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:10:32,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:10:32,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:10:32,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:10:32,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:10:32,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:10:32,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:10:32,627 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:10:32,627 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:10:32,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:10:32,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:10:32,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:10:32,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:10:32,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:10:32,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-30 01:10:32,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:10:32,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:10:32,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:10:32,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-30 01:10:32,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:10:32,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:10:32,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:10:32,692 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:10:32,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:10:32,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:10:32,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:10:32,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:10:32,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:10:32,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:10:32,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:10:32,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:10:32,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:10:32,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:10:32,696 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-30 01:10:32,696 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-30 01:10:32,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:10:32,697 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:10:32,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-30 01:10:32,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:10:32,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:10:32,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:10:32,698 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-30 01:10:32,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:10:32,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:10:32,701 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_7eb30911-d312-4054-8b4d-e3f508676ad1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 990c50250359c7452ab1ceec7da37e6f04bc6511 [2020-11-30 01:10:33,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:10:33,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:10:33,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:10:33,116 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:10:33,117 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:10:33,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2020-11-30 01:10:33,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/data/2febd39e1/fc544a59c01a4d9fa34a5aa5fe1178e1/FLAG4132a710b [2020-11-30 01:10:33,784 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:10:33,785 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/sv-benchmarks/c/recursive-simple/id2_i5_o5-1.c [2020-11-30 01:10:33,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/data/2febd39e1/fc544a59c01a4d9fa34a5aa5fe1178e1/FLAG4132a710b [2020-11-30 01:10:34,111 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/data/2febd39e1/fc544a59c01a4d9fa34a5aa5fe1178e1 [2020-11-30 01:10:34,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:10:34,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:10:34,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:34,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:10:34,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:10:34,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6713face and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34, skipping insertion in model container [2020-11-30 01:10:34,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:10:34,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:10:34,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:34,395 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:10:34,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:10:34,431 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:10:34,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34 WrapperNode [2020-11-30 01:10:34,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:10:34,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:34,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:10:34,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:10:34,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:10:34,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:10:34,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:10:34,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:10:34,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:10:34,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:10:34,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:10:34,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:10:34,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:10:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/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 [2020-11-30 01:10:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:10:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:10:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-11-30 01:10:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-11-30 01:10:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:10:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:10:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-30 01:10:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-30 01:10:34,954 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:10:34,955 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:10:34,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:34 BoogieIcfgContainer [2020-11-30 01:10:34,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:10:34,959 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-30 01:10:34,959 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-30 01:10:34,969 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-30 01:10:34,969 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:34" (1/1) ... [2020-11-30 01:10:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:10:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:35,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2020-11-30 01:10:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-30 01:10:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:10:35,027 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2020-11-30 01:10:35,450 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-30 01:10:35,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:10:35,451 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:10:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 36 transitions. [2020-11-30 01:10:36,120 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2020-11-30 01:10:36,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:10:36,122 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:10:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 37 states and 52 transitions. [2020-11-30 01:10:37,263 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2020-11-30 01:10:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:10:37,265 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 01:10:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 43 states and 67 transitions. [2020-11-30 01:10:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-11-30 01:10:38,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:10:38,248 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-30 01:10:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 45 states and 70 transitions. [2020-11-30 01:10:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 70 transitions. [2020-11-30 01:10:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:10:38,608 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:10:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 51 states and 87 transitions. [2020-11-30 01:10:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 87 transitions. [2020-11-30 01:10:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:10:39,507 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:10:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-30 01:10:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-30 01:10:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 53 states and 91 transitions. [2020-11-30 01:10:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 91 transitions. [2020-11-30 01:10:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-30 01:10:39,865 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-30 01:10:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:39,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:39,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:40,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:10:40,056 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:10:40,098 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2020-11-30 01:10:40,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 30.11 01:10:40 ImpRootNode [2020-11-30 01:10:40,213 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-30 01:10:40,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:10:40,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:10:40,214 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:10:40,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:10:34" (3/4) ... [2020-11-30 01:10:40,232 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:10:40,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7eb30911-d312-4054-8b4d-e3f508676ad1/bin/ukojak/witness.graphml [2020-11-30 01:10:40,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:10:40,356 INFO L168 Benchmark]: Toolchain (without parser) took 6238.90 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 53.3 MB in the beginning and 72.4 MB in the end (delta: -19.2 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:40,356 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory was 29.2 MB in the beginning and 29.1 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:40,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.45 ms. Allocated memory is still 83.9 MB. Free memory was 53.1 MB in the beginning and 62.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:40,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 83.9 MB. Free memory was 62.7 MB in the beginning and 61.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:40,358 INFO L168 Benchmark]: Boogie Preprocessor took 22.95 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 60.6 MB in the end (delta: 883.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:40,359 INFO L168 Benchmark]: RCFGBuilder took 460.39 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 47.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:40,360 INFO L168 Benchmark]: CodeCheck took 5254.53 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 47.2 MB in the beginning and 75.6 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:10:40,361 INFO L168 Benchmark]: Witness Printer took 139.87 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 72.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:10:40,366 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: 5.1s, OverallIterations: 8, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1600 SDtfs, 1308 SDslu, 1464 SDs, 0 SdLazy, 6476 SolverSat, 1404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1763 GetRequests, 1618 SyntacticMatches, 75 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 9984 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 32/64 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: [L20] int input = 5; [L21] CALL, EXPR id(input) VAL [\old(x)=5] [L10] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=4] [L15] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L16] CALL, EXPR id(x-1) VAL [\old(x)=3] [L10] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=2] [L15] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L16] CALL, EXPR id(x-1) VAL [\old(x)=1] [L10] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L11] CALL, EXPR id2(x-1) VAL [\old(x)=0] [L15] COND TRUE x==0 [L15] return 0; VAL [\old(x)=0, \result=0, x=0] [L11] RET, EXPR id2(x-1) VAL [\old(x)=1, id2(x-1)=0, x=1] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=3, id2(x-1)=2, x=3] [L11] return id2(x-1) + 1; [L16] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L16] return id(x-1) + 1; [L11] RET, EXPR id2(x-1) VAL [\old(x)=5, id2(x-1)=4, x=5] [L11] return id2(x-1) + 1; [L21] RET, EXPR id(input) [L21] int result = id(input); [L22] COND TRUE result == 5 [L4] __assert_fail("0", "id2_i5_o5-1.c", 4, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 67.1 MB. Free memory was 29.2 MB in the beginning and 29.1 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 311.45 ms. Allocated memory is still 83.9 MB. Free memory was 53.1 MB in the beginning and 62.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 83.9 MB. Free memory was 62.7 MB in the beginning and 61.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.95 ms. Allocated memory is still 83.9 MB. Free memory was 61.5 MB in the beginning and 60.6 MB in the end (delta: 883.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 460.39 ms. Allocated memory is still 83.9 MB. Free memory was 60.6 MB in the beginning and 47.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 5254.53 ms. Allocated memory was 83.9 MB in the beginning and 104.9 MB in the end (delta: 21.0 MB). Free memory was 47.2 MB in the beginning and 75.6 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 139.87 ms. Allocated memory is still 104.9 MB. Free memory was 75.6 MB in the beginning and 72.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...