./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-4.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_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/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 925bf64e647f08edad293233522d90c39c43645d ....................................................................................................................................................................................................................................................................................................................... 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 16:35:26,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 16:35:26,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 16:35:27,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 16:35:27,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 16:35:27,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 16:35:27,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 16:35:27,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 16:35:27,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 16:35:27,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 16:35:27,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 16:35:27,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 16:35:27,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 16:35:27,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 16:35:27,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 16:35:27,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 16:35:27,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 16:35:27,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 16:35:27,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 16:35:27,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 16:35:27,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 16:35:27,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 16:35:27,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 16:35:27,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 16:35:27,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 16:35:27,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 16:35:27,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 16:35:27,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 16:35:27,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 16:35:27,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 16:35:27,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 16:35:27,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 16:35:27,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 16:35:27,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 16:35:27,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 16:35:27,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 16:35:27,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 16:35:27,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 16:35:27,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 16:35:27,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 16:35:27,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 16:35:27,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-12-01 16:35:27,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 16:35:27,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 16:35:27,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-01 16:35:27,174 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-12-01 16:35:27,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 16:35:27,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 16:35:27,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 16:35:27,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 16:35:27,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 16:35:27,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 16:35:27,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 16:35:27,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 16:35:27,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 16:35:27,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 16:35:27,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 16:35:27,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 16:35:27,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 16:35:27,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 16:35:27,179 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-12-01 16:35:27,179 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-12-01 16:35:27,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 16:35:27,179 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 16:35:27,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-12-01 16:35:27,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 16:35:27,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 16:35:27,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 16:35:27,181 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-12-01 16:35:27,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 16:35:27,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 16:35:27,182 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_699e4054-a5ed-4de5-b858-f17c585a4b61/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 925bf64e647f08edad293233522d90c39c43645d [2020-12-01 16:35:27,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 16:35:27,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 16:35:27,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 16:35:27,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 16:35:27,513 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 16:35:27,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/../../sv-benchmarks/c/heap-manipulation/tree-4.i [2020-12-01 16:35:27,622 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/data/e47e0a39d/919d622b53534a5ba3a16eb6cd9d2241/FLAGfef668289 [2020-12-01 16:35:28,319 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 16:35:28,320 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/sv-benchmarks/c/heap-manipulation/tree-4.i [2020-12-01 16:35:28,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/data/e47e0a39d/919d622b53534a5ba3a16eb6cd9d2241/FLAGfef668289 [2020-12-01 16:35:28,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/data/e47e0a39d/919d622b53534a5ba3a16eb6cd9d2241 [2020-12-01 16:35:28,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 16:35:28,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 16:35:28,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 16:35:28,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 16:35:28,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 16:35:28,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:35:28" (1/1) ... [2020-12-01 16:35:28,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66652fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:28, skipping insertion in model container [2020-12-01 16:35:28,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:35:28" (1/1) ... [2020-12-01 16:35:28,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 16:35:28,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 16:35:29,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:35:29,170 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 16:35:29,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 16:35:29,346 INFO L208 MainTranslator]: Completed translation [2020-12-01 16:35:29,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29 WrapperNode [2020-12-01 16:35:29,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 16:35:29,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 16:35:29,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 16:35:29,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 16:35:29,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 16:35:29,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 16:35:29,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 16:35:29,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 16:35:29,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... [2020-12-01 16:35:29,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 16:35:29,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 16:35:29,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 16:35:29,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 16:35:29,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:35:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/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 16:35:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 16:35:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-12-01 16:35:29,624 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-12-01 16:35:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 16:35:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 16:35:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-01 16:35:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 16:35:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-01 16:35:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 16:35:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 16:35:29,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 16:35:29,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 16:35:30,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 16:35:30,601 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-01 16:35:30,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:35:30 BoogieIcfgContainer [2020-12-01 16:35:30,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 16:35:30,605 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-12-01 16:35:30,605 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-12-01 16:35:30,619 INFO L275 PluginConnector]: CodeCheck initialized [2020-12-01 16:35:30,619 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:35:30" (1/1) ... [2020-12-01 16:35:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 16:35:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 31 states and 51 transitions. [2020-12-01 16:35:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 51 transitions. [2020-12-01 16:35:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 16:35:30,689 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:30,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:30,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 29 states and 42 transitions. [2020-12-01 16:35:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2020-12-01 16:35:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 16:35:30,844 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:31,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 28 states and 40 transitions. [2020-12-01 16:35:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2020-12-01 16:35:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 16:35:31,075 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 33 states and 44 transitions. [2020-12-01 16:35:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-12-01 16:35:31,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 16:35:31,529 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:32,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 34 states and 47 transitions. [2020-12-01 16:35:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2020-12-01 16:35:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:35:32,062 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:34,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 43 states and 69 transitions. [2020-12-01 16:35:34,326 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2020-12-01 16:35:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 16:35:34,328 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 49 states and 82 transitions. [2020-12-01 16:35:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 82 transitions. [2020-12-01 16:35:36,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:35:36,818 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:39,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 51 states and 97 transitions. [2020-12-01 16:35:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-12-01 16:35:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 16:35:39,691 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 16:35:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 16:35:42,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-12-01 16:35:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 56 states and 110 transitions. [2020-12-01 16:35:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 110 transitions. [2020-12-01 16:35:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 16:35:42,565 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-12-01 16:35:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:35:42,598 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:35:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:35:42,630 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:35:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:35:43,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:35:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 16:35:44,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 16:35:44,711 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 9 iterations. [2020-12-01 16:35:44,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 04:35:44 ImpRootNode [2020-12-01 16:35:44,753 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-12-01 16:35:44,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 16:35:44,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 16:35:44,754 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 16:35:44,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:35:30" (3/4) ... [2020-12-01 16:35:44,756 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 16:35:44,811 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_699e4054-a5ed-4de5-b858-f17c585a4b61/bin/ukojak/witness.graphml [2020-12-01 16:35:44,811 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 16:35:44,813 INFO L168 Benchmark]: Toolchain (without parser) took 16226.03 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 67.8 MB in the beginning and 84.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,814 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 43.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 16:35:44,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.31 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 63.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.76 ms. Allocated memory is still 98.6 MB. Free memory was 63.5 MB in the beginning and 61.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,816 INFO L168 Benchmark]: Boogie Preprocessor took 77.60 ms. Allocated memory is still 98.6 MB. Free memory was 61.3 MB in the beginning and 59.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,817 INFO L168 Benchmark]: RCFGBuilder took 1068.89 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 51.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,818 INFO L168 Benchmark]: CodeCheck took 14148.39 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 51.8 MB in the beginning and 88.1 MB in the end (delta: -36.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,818 INFO L168 Benchmark]: Witness Printer took 57.47 ms. Allocated memory is still 144.7 MB. Free memory was 88.1 MB in the beginning and 84.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 16:35:44,822 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, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.0s, OverallIterations: 9, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3848 SDtfs, 2008 SDslu, 2496 SDs, 0 SdLazy, 5006 SolverSat, 1902 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1224 GetRequests, 1111 SyntacticMatches, 13 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3191 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 16112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 8/18 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: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L585] struct node *nodelast = ((void *)0); [L586] struct node *node = ((void *)0); [L587] COND TRUE __VERIFIER_nondet_int() [L588] node = malloc(sizeof *node) [L589] COND FALSE !(!node) [L591] node->left = ((void *)0) [L592] node->right = nodelast [L593] COND FALSE !(\read(*nodelast)) [L595] int value = __VERIFIER_nondet_int(); [L596] node->value = value [L597] nodelast = node [L587] COND FALSE !(__VERIFIER_nondet_int()) [L599] COND TRUE node != ((void *)0) [L600] node->parent = ((void *)0) [L601] COND TRUE node != ((void *)0) [L602] node->left = malloc(sizeof *node) [L603] COND FALSE !(!node) [L605] EXPR node->left [L605] node->left->left = ((void *)0) [L606] EXPR node->left [L606] node->left->right = ((void *)0) [L607] EXPR node->left [L607] node->left->value = 42 [L608] EXPR node->left [L608] node->left->parent = node [L609] EXPR node->right [L609] node = node->right [L601] COND FALSE !(node != ((void *)0)) [L611] return nodelast; [L632] struct node *data = create_tree(); [L633] COND FALSE !(!data) [L575] COND FALSE !(!(node)) [L576] COND TRUE node != ((void *)0) [L577] node->left [L577] COND TRUE node->left [L578] EXPR node->left [L578] EXPR node->left->value [L578] COND FALSE !(!(node->left->value == 42)) [L579] EXPR node->value [L579] COND TRUE !(node->value) [L579] CALL fail() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "tree-4.c", 3, __extension__ __PRETTY_FUNCTION__) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 79.7 MB. Free memory was 37.3 MB in the beginning and 37.3 MB in the end (delta: 43.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 761.31 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 63.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.76 ms. Allocated memory is still 98.6 MB. Free memory was 63.5 MB in the beginning and 61.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.60 ms. Allocated memory is still 98.6 MB. Free memory was 61.3 MB in the beginning and 59.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1068.89 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 51.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * CodeCheck took 14148.39 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 51.8 MB in the beginning and 88.1 MB in the end (delta: -36.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.47 ms. Allocated memory is still 144.7 MB. Free memory was 88.1 MB in the beginning and 84.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...