./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/recursive_list.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/ldv-regression/recursive_list.i -s /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/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 37b220fd67c69dd62d320a9e830f108e76b0f2e5 ....................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 16:28:47,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:28:47,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:28:47,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:28:47,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:28:47,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:28:47,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:28:47,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:28:47,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:28:47,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:28:47,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:28:47,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:28:47,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:28:47,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:28:47,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:28:47,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:28:47,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:28:47,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:28:47,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:28:47,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:28:47,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:28:47,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:28:47,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:28:47,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:28:47,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:28:47,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:28:47,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:28:47,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:28:47,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:28:47,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:28:47,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:28:47,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:28:47,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:28:47,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:28:47,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:28:47,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:28:47,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:28:47,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:28:47,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:28:47,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:28:47,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:28:47,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 16:28:47,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:28:47,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:28:47,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 16:28:47,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 16:28:47,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:28:47,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:28:47,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:28:47,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:28:47,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:28:47,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:28:47,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:28:47,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:28:47,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:28:47,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:28:47,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:28:47,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:28:47,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:28:47,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:28:47,670 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:28:47,681 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:28:47,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:28:47,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:28:47,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:28:47,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:28:47,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:28:47,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:28:47,694 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:28:47,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:28:47,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:28:47,695 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_15948d6d-7287-487c-813a-d849a44bcb66/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b220fd67c69dd62d320a9e830f108e76b0f2e5 [2020-12-01 16:28:48,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:28:48,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:28:48,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:28:48,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:28:48,088 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:28:48,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/../../sv-benchmarks/c/ldv-regression/recursive_list.i [2020-12-01 16:28:48,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/data/5f022d8c8/f9e5642a0a6a444ba5498467ee5c9565/FLAGbb7096237 [2020-12-01 16:28:48,721 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:28:48,722 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/sv-benchmarks/c/ldv-regression/recursive_list.i [2020-12-01 16:28:48,733 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/data/5f022d8c8/f9e5642a0a6a444ba5498467ee5c9565/FLAGbb7096237 [2020-12-01 16:28:49,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/data/5f022d8c8/f9e5642a0a6a444ba5498467ee5c9565 [2020-12-01 16:28:49,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:28:49,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:28:49,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:28:49,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:28:49,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:28:49,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608de28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49, skipping insertion in model container [2020-12-01 16:28:49,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:28:49,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:28:49,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:28:49,338 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:28:49,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:28:49,369 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:28:49,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49 WrapperNode [2020-12-01 16:28:49,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:28:49,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:28:49,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:28:49,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:28:49,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:28:49,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:28:49,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:28:49,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:28:49,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:28:49,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:28:49,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:28:49,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:28:49,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:28:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/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 [2020-12-01 16:28:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:28:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:28:49,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:28:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:28:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:28:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:28:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:28:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:28:49,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:28:49,514 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-12-01 16:28:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-12-01 16:28:49,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:28:49,883 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:28:49,883 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 16:28:49,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:28:49 BoogieIcfgContainer [2020-12-01 16:28:49,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:28:49,887 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:28:49,887 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:28:49,912 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:28:49,913 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:28:49" (1/1) ... [2020-12-01 16:28:49,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:28:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:28:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 12 states and 13 transitions. [2020-12-01 16:28:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-01 16:28:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 16:28:49,984 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:28:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:28:50,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:28:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:28:50,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:28:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:28:50,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:28:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:28:50,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:28:50,689 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 1 iterations. [2020-12-01 16:28:50,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:28:50 ImpRootNode [2020-12-01 16:28:50,747 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:28:50,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:28:50,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:28:50,750 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:28:50,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:28:49" (3/4) ... [2020-12-01 16:28:50,753 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:28:50,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_15948d6d-7287-487c-813a-d849a44bcb66/bin/ukojak/witness.graphml [2020-12-01 16:28:50,853 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:28:50,856 INFO L168 Benchmark]: Toolchain (without parser) took 1748.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 66.7 MB in the beginning and 70.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:28:50,857 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:28:50,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.25 ms. Allocated memory is still 94.4 MB. Free memory was 66.5 MB in the beginning and 72.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:28:50,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.74 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 70.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:28:50,859 INFO L168 Benchmark]: Boogie Preprocessor took 25.07 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:28:50,860 INFO L168 Benchmark]: RCFGBuilder took 438.07 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 49.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 16:28:50,860 INFO L168 Benchmark]: CodeCheck took 860.17 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 49.1 MB in the beginning and 72.0 MB in the end (delta: -22.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:28:50,861 INFO L168 Benchmark]: Witness Printer took 104.27 ms. Allocated memory is still 113.2 MB. Free memory was 72.0 MB in the beginning and 70.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:28:50,870 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, 12 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int i = 1; [L39] struct list *l,m; [L40] l = &m [L41] l->next = 0 [L42] l->n = 0 VAL [i=1] [L44] CALL, EXPR append(l, 1) VAL [i=1] [L27] struct list *new_el; [L22] return malloc(8U); [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; [L44] RET, EXPR append(l, 1) VAL [i=1] [L44] l = append(l, 1) [L45] CALL, EXPR append(l, 2) VAL [i=1] [L27] struct list *new_el; [L22] return malloc(8U); [L29] new_el = allocate_memory() [L31] new_el->n = n [L32] new_el->next = l [L34] return new_el; [L45] RET, EXPR append(l, 2) VAL [i=1] [L45] l = append(l, 2) [L50] EXPR l->next [L50] EXPR l->next->next [L50] EXPR l->next->next->n VAL [i=1] [L50] COND TRUE l->next->next->n == 0 [L3] __assert_fail("0", "recursive_list.i", 3, "reach_error") VAL [i=1] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.25 ms. Allocated memory is still 94.4 MB. Free memory was 66.5 MB in the beginning and 72.5 MB in the end (delta: -6.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.74 ms. Allocated memory is still 94.4 MB. Free memory was 72.5 MB in the beginning and 70.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.07 ms. Allocated memory is still 94.4 MB. Free memory was 70.8 MB in the beginning and 69.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 438.07 ms. Allocated memory is still 94.4 MB. Free memory was 69.6 MB in the beginning and 49.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * CodeCheck took 860.17 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 49.1 MB in the beginning and 72.0 MB in the end (delta: -22.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 104.27 ms. Allocated memory is still 113.2 MB. Free memory was 72.0 MB in the beginning and 70.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...