./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/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 a033d09eab07f8bc6e49bb4301ebd6c89110f535 ................................................................................................................................................................................................................................................ 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 [2019-11-20 09:34:19,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 09:34:19,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 09:34:19,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 09:34:19,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 09:34:19,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 09:34:19,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 09:34:19,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 09:34:19,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 09:34:19,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 09:34:19,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 09:34:19,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 09:34:19,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 09:34:19,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 09:34:19,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 09:34:19,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 09:34:19,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 09:34:19,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 09:34:19,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 09:34:19,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 09:34:19,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 09:34:19,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 09:34:19,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 09:34:19,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 09:34:19,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 09:34:19,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 09:34:19,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 09:34:19,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 09:34:19,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 09:34:19,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 09:34:19,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 09:34:19,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 09:34:19,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 09:34:19,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 09:34:19,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 09:34:19,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 09:34:19,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 09:34:19,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 09:34:19,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 09:34:19,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 09:34:19,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 09:34:19,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2019-11-20 09:34:19,493 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 09:34:19,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 09:34:19,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-20 09:34:19,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2019-11-20 09:34:19,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 09:34:19,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 09:34:19,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 09:34:19,496 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 09:34:19,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 09:34:19,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 09:34:19,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 09:34:19,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 09:34:19,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 09:34:19,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 09:34:19,497 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 09:34:19,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 09:34:19,498 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 09:34:19,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 09:34:19,498 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2019-11-20 09:34:19,498 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2019-11-20 09:34:19,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 09:34:19,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 09:34:19,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2019-11-20 09:34:19,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 09:34:19,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 09:34:19,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 09:34:19,500 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2019-11-20 09:34:19,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 09:34:19,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 09:34:19,500 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_16d516c8-89c2-4238-a205-548a615a684b/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 -> a033d09eab07f8bc6e49bb4301ebd6c89110f535 [2019-11-20 09:34:19,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 09:34:19,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 09:34:19,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 09:34:19,672 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 09:34:19,672 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 09:34:19,673 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2019-11-20 09:34:19,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/data/ff79bab98/63f0a4c01e264616b8b958d7973cf6d9/FLAG42534e3a6 [2019-11-20 09:34:20,130 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 09:34:20,131 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2019-11-20 09:34:20,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/data/ff79bab98/63f0a4c01e264616b8b958d7973cf6d9/FLAG42534e3a6 [2019-11-20 09:34:20,151 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/data/ff79bab98/63f0a4c01e264616b8b958d7973cf6d9 [2019-11-20 09:34:20,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 09:34:20,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 09:34:20,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 09:34:20,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 09:34:20,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 09:34:20,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6112aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20, skipping insertion in model container [2019-11-20 09:34:20,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,176 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 09:34:20,195 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 09:34:20,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:34:20,387 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 09:34:20,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 09:34:20,477 INFO L192 MainTranslator]: Completed translation [2019-11-20 09:34:20,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20 WrapperNode [2019-11-20 09:34:20,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 09:34:20,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 09:34:20,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 09:34:20,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 09:34:20,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 09:34:20,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 09:34:20,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 09:34:20,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 09:34:20,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 09:34:20,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 09:34:20,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 09:34:20,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 09:34:20,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/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 [2019-11-20 09:34:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-11-20 09:34:20,570 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-11-20 09:34:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 09:34:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 09:34:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-20 09:34:20,571 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-20 09:34:20,812 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 09:34:20,812 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 09:34:20,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:20 BoogieIcfgContainer [2019-11-20 09:34:20,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 09:34:20,814 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2019-11-20 09:34:20,814 INFO L271 PluginConnector]: Initializing CodeCheck... [2019-11-20 09:34:20,823 INFO L275 PluginConnector]: CodeCheck initialized [2019-11-20 09:34:20,823 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:20" (1/1) ... [2019-11-20 09:34:20,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 09:34:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 09:34:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 20 states and 23 transitions. [2019-11-20 09:34:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-20 09:34:20,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 09:34:20,886 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 09:34:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:34:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:34:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 09:34:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 24 states and 28 transitions. [2019-11-20 09:34:21,183 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-20 09:34:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 09:34:21,184 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 09:34:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 09:34:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 09:34:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2019-11-20 09:34:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 31 states and 38 transitions. [2019-11-20 09:34:21,843 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-11-20 09:34:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-20 09:34:21,844 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2019-11-20 09:34:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:34:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:34:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:34:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 09:34:22,032 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2019-11-20 09:34:22,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 09:34:22 ImpRootNode [2019-11-20 09:34:22,064 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2019-11-20 09:34:22,064 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 09:34:22,065 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 09:34:22,065 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 09:34:22,065 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:20" (3/4) ... [2019-11-20 09:34:22,068 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 09:34:22,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_16d516c8-89c2-4238-a205-548a615a684b/bin/ukojak/witness.graphml [2019-11-20 09:34:22,134 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 09:34:22,136 INFO L168 Benchmark]: Toolchain (without parser) took 1979.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -76.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 11.5 GB. [2019-11-20 09:34:22,138 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:34:22,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -202.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:34:22,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.85 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. [2019-11-20 09:34:22,140 INFO L168 Benchmark]: Boogie Preprocessor took 12.68 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. [2019-11-20 09:34:22,140 INFO L168 Benchmark]: RCFGBuilder took 294.80 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2019-11-20 09:34:22,141 INFO L168 Benchmark]: CodeCheck took 1250.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.6 MB). Peak memory consumption was 100.6 MB. Max. memory is 11.5 GB. [2019-11-20 09:34:22,141 INFO L168 Benchmark]: Witness Printer took 69.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 09:34:22,144 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 3 procedures, 20 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 12 SDslu, 16 SDs, 0 SdLazy, 68 SolverSat, 32 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, 0.6s 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, 1320 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: 25]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] unsigned int input = __VERIFIER_nondet_uint(); [L23] CALL, EXPR id(input) VAL [\old(x)=2] [L8] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L9] CALL, EXPR id2(x-1) VAL [\old(x)=1] [L15] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L16] CALL, EXPR id(x-1) VAL [\old(x)=0] [L8] COND TRUE x==0 [L8] return 0; VAL [\old(x)=0, \result=0, x=0] [L16] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L16] unsigned int ret = id(x-1) + 1; [L17] COND FALSE !(ret > 3) [L18] return ret; VAL [\old(x)=1, \result=1, ret=1, x=1] [L9] RET, EXPR id2(x-1) VAL [\old(x)=2, id2(x-1)=1, x=2] [L9] unsigned int ret = id2(x-1) + 1; [L10] COND FALSE !(ret > 3) [L11] return ret; VAL [\old(x)=2, \result=2, ret=2, x=2] [L23] RET, EXPR id(input) [L23] unsigned int result = id(input); [L24] COND TRUE result == 2 [L25] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -202.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.85 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 12.68 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 294.80 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * CodeCheck took 1250.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.6 MB). Peak memory consumption was 100.6 MB. Max. memory is 11.5 GB. * Witness Printer took 69.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...