./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.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_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/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 68fd8ffa149cd68eb012d97df5d4befaa28f95fa .................................................................................................................................................................................................................................................................................................................................................................... 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 04:42:11,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:42:11,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:42:11,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:42:11,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:42:11,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:42:11,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:42:11,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:42:11,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:42:11,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:42:11,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:42:11,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:42:11,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:42:11,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:42:11,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:42:11,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:42:11,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:42:11,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:42:11,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:42:11,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:42:11,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:42:11,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:42:11,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:42:11,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:42:11,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:42:11,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:42:11,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:42:11,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:42:11,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:42:11,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:42:11,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:42:11,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:42:11,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:42:11,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:42:11,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:42:11,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:42:11,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:42:11,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:42:11,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:42:11,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:42:11,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:42:11,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:42:11,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:42:11,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:42:11,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:42:11,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:42:11,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:42:11,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:42:11,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:42:11,211 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:42:11,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:42:11,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:42:11,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:42:11,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:42:11,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:42:11,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:42:11,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:42:11,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:42:11,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:42:11,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:42:11,215 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:42:11,215 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:42:11,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:42:11,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:42:11,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:42:11,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:42:11,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:42:11,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:42:11,217 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:42:11,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:42:11,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:42:11,217 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_6784084f-f6ba-482f-bee4-ae0f5cefcad8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fd8ffa149cd68eb012d97df5d4befaa28f95fa [2020-11-28 04:42:11,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:42:11,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:42:11,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:42:11,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:42:11,524 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:42:11,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/../../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2020-11-28 04:42:11,600 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/data/a99357683/fbcff516628149adb1677a8b70dbc263/FLAG763b4146f [2020-11-28 04:42:12,036 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:42:12,036 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2020-11-28 04:42:12,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/data/a99357683/fbcff516628149adb1677a8b70dbc263/FLAG763b4146f [2020-11-28 04:42:12,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/data/a99357683/fbcff516628149adb1677a8b70dbc263 [2020-11-28 04:42:12,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:42:12,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:42:12,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:42:12,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:42:12,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:42:12,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6fa79d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12, skipping insertion in model container [2020-11-28 04:42:12,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:42:12,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:42:12,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:42:12,680 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:42:12,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:42:12,707 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:42:12,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12 WrapperNode [2020-11-28 04:42:12,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:42:12,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:42:12,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:42:12,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:42:12,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:42:12,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:42:12,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:42:12,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:42:12,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... [2020-11-28 04:42:12,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:42:12,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:42:12,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:42:12,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:42:12,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/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 04:42:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:42:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:42:12,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:42:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-28 04:42:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-28 04:42:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:42:13,078 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:42:13,078 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 04:42:13,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:13 BoogieIcfgContainer [2020-11-28 04:42:13,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:42:13,081 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:42:13,081 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:42:13,092 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:42:13,093 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:13" (1/1) ... [2020-11-28 04:42:13,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:42:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:13,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2020-11-28 04:42:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 04:42:13,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 04:42:13,155 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:13,362 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 04:42:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2020-11-28 04:42:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-28 04:42:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 04:42:13,511 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 04:42:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:14,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 23 states and 31 transitions. [2020-11-28 04:42:14,126 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2020-11-28 04:42:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 04:42:14,127 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 04:42:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:14,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 28 states and 42 transitions. [2020-11-28 04:42:14,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2020-11-28 04:42:14,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 04:42:14,644 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 04:42:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 33 states and 55 transitions. [2020-11-28 04:42:15,368 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 55 transitions. [2020-11-28 04:42:15,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 04:42:15,369 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:15,486 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-28 04:42:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:15,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 38 states and 70 transitions. [2020-11-28 04:42:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 70 transitions. [2020-11-28 04:42:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-28 04:42:15,982 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-28 04:42:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 43 states and 87 transitions. [2020-11-28 04:42:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 87 transitions. [2020-11-28 04:42:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 04:42:16,612 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-11-28 04:42:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 48 states and 106 transitions. [2020-11-28 04:42:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 106 transitions. [2020-11-28 04:42:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 04:42:17,281 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-28 04:42:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 53 states and 127 transitions. [2020-11-28 04:42:18,018 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 127 transitions. [2020-11-28 04:42:18,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-28 04:42:18,021 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-11-28 04:42:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 58 states and 150 transitions. [2020-11-28 04:42:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 150 transitions. [2020-11-28 04:42:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-28 04:42:19,000 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:42:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-28 04:42:20,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:42:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 63 states and 175 transitions. [2020-11-28 04:42:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 175 transitions. [2020-11-28 04:42:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-28 04:42:20,132 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:42:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:20,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:20,202 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:20,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:42:20,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:42:20,387 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 11 iterations. [2020-11-28 04:42:20,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:42:20 ImpRootNode [2020-11-28 04:42:20,507 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:42:20,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:42:20,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:42:20,508 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:42:20,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:13" (3/4) ... [2020-11-28 04:42:20,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:42:20,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6784084f-f6ba-482f-bee4-ae0f5cefcad8/bin/ukojak/witness.graphml [2020-11-28 04:42:20,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:42:20,646 INFO L168 Benchmark]: Toolchain (without parser) took 8193.99 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 63.7 MB in the beginning and 86.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 429.5 kB. Max. memory is 16.1 GB. [2020-11-28 04:42:20,647 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 73.4 MB. Free memory was 31.2 MB in the beginning and 31.1 MB in the end (delta: 67.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:42:20,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.56 ms. Allocated memory is still 96.5 MB. Free memory was 63.5 MB in the beginning and 73.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:20,647 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.53 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 72.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:42:20,648 INFO L168 Benchmark]: Boogie Preprocessor took 24.84 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.4 MB in the end (delta: 787.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:20,648 INFO L168 Benchmark]: RCFGBuilder took 315.47 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 59.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:20,649 INFO L168 Benchmark]: CodeCheck took 7425.56 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.2 MB in the beginning and 90.7 MB in the end (delta: -31.5 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:20,649 INFO L168 Benchmark]: Witness Printer took 133.28 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 86.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 04:42:20,652 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.2s, OverallIterations: 11, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11264 SDtfs, 9712 SDslu, 9200 SDs, 0 SdLazy, 57370 SolverSat, 11506 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4868 GetRequests, 4538 SyntacticMatches, 212 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4719 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 38720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/900 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int input = 10; [L13] CALL, EXPR id(input) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0, x=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, id(x-1)=0, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, id(x-1)=1, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, id(x-1)=2, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, id(x-1)=3, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, id(x-1)=4, x=5] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=6, id(x-1)=5, x=6] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=7, id(x-1)=6, x=7] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=8, id(x-1)=7, x=8] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=9, id(x-1)=8, x=9] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=10, id(x-1)=9, x=10] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) [L13] int result = id(input); [L14] COND TRUE result == 10 [L4] __assert_fail("0", "id_i10_o10-1.c", 4, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 73.4 MB. Free memory was 31.2 MB in the beginning and 31.1 MB in the end (delta: 67.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.56 ms. Allocated memory is still 96.5 MB. Free memory was 63.5 MB in the beginning and 73.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.53 ms. Allocated memory is still 96.5 MB. Free memory was 73.5 MB in the beginning and 72.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.84 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 71.4 MB in the end (delta: 787.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 315.47 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 59.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 7425.56 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.2 MB in the beginning and 90.7 MB in the end (delta: -31.5 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. * Witness Printer took 133.28 ms. Allocated memory is still 119.5 MB. Free memory was 90.7 MB in the beginning and 86.5 MB in the end (delta: 4.2 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...