./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eed6d14b3659ee573ecc9a025ea4a6cd48efa35c .......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 18:01:49,770 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 18:01:49,771 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 18:01:49,777 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 18:01:49,777 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 18:01:49,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 18:01:49,778 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 18:01:49,779 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 18:01:49,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 18:01:49,780 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 18:01:49,781 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 18:01:49,781 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 18:01:49,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 18:01:49,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 18:01:49,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 18:01:49,783 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 18:01:49,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 18:01:49,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 18:01:49,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 18:01:49,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 18:01:49,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 18:01:49,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 18:01:49,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 18:01:49,788 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 18:01:49,788 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 18:01:49,789 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 18:01:49,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 18:01:49,790 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 18:01:49,790 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 18:01:49,791 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 18:01:49,791 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 18:01:49,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 18:01:49,791 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 18:01:49,791 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 18:01:49,792 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 18:01:49,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 18:01:49,792 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-12-01 18:01:49,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 18:01:49,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 18:01:49,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 18:01:49,800 INFO L133 SettingsManager]: * ... to procedures called more than once=ALWAYS [2018-12-01 18:01:49,801 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 18:01:49,801 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 18:01:49,801 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 18:01:49,801 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 18:01:49,801 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 18:01:49,801 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 18:01:49,801 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 18:01:49,801 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 18:01:49,802 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-01 18:01:49,802 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-01 18:01:49,803 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 18:01:49,803 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 18:01:49,803 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-01 18:01:49,803 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 18:01:49,803 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 18:01:49,803 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 18:01:49,803 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-01 18:01:49,804 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 18:01:49,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 18:01:49,804 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eed6d14b3659ee573ecc9a025ea4a6cd48efa35c [2018-12-01 18:01:49,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 18:01:49,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 18:01:49,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 18:01:49,831 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 18:01:49,831 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 18:01:49,831 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/../../sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-12-01 18:01:49,874 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/data/97e952008/47997204ba6044a6b275882222649ecd/FLAG5a2eb54b0 [2018-12-01 18:01:50,182 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 18:01:50,182 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/sv-benchmarks/c/list-ext2-properties/list_and_tree_cnstr_false-unreach-call_false-termination.i [2018-12-01 18:01:50,189 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/data/97e952008/47997204ba6044a6b275882222649ecd/FLAG5a2eb54b0 [2018-12-01 18:01:50,197 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/data/97e952008/47997204ba6044a6b275882222649ecd [2018-12-01 18:01:50,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 18:01:50,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 18:01:50,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 18:01:50,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 18:01:50,203 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 18:01:50,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3add549f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50, skipping insertion in model container [2018-12-01 18:01:50,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 18:01:50,228 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 18:01:50,377 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:01:50,423 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 18:01:50,451 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 18:01:50,471 INFO L195 MainTranslator]: Completed translation [2018-12-01 18:01:50,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50 WrapperNode [2018-12-01 18:01:50,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 18:01:50,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 18:01:50,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 18:01:50,472 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 18:01:50,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 18:01:50,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 18:01:50,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 18:01:50,501 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 18:01:50,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... [2018-12-01 18:01:50,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 18:01:50,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 18:01:50,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 18:01:50,521 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 18:01:50,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 06:01:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/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 [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-01 18:01:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 18:01:50,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 18:01:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 18:01:51,077 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 18:01:51,077 INFO L280 CfgBuilder]: Removed 12 assue(true) statements. [2018-12-01 18:01:51,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:01:51 BoogieIcfgContainer [2018-12-01 18:01:51,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 18:01:51,078 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-01 18:01:51,078 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-01 18:01:51,084 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-01 18:01:51,084 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:01:51" (1/1) ... [2018-12-01 18:01:51,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 18:01:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 37 states and 55 transitions. [2018-12-01 18:01:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 55 transitions. [2018-12-01 18:01:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 18:01:51,115 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:51,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 37 states and 49 transitions. [2018-12-01 18:01:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2018-12-01 18:01:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 18:01:51,189 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 41 states and 56 transitions. [2018-12-01 18:01:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2018-12-01 18:01:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-01 18:01:51,255 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 41 states and 55 transitions. [2018-12-01 18:01:51,280 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 55 transitions. [2018-12-01 18:01:51,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 18:01:51,281 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 41 states and 54 transitions. [2018-12-01 18:01:51,300 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2018-12-01 18:01:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-01 18:01:51,300 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:51,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 52 states and 75 transitions. [2018-12-01 18:01:51,426 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 75 transitions. [2018-12-01 18:01:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 18:01:51,426 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 52 states and 73 transitions. [2018-12-01 18:01:51,521 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 73 transitions. [2018-12-01 18:01:51,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-01 18:01:51,522 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 52 states and 71 transitions. [2018-12-01 18:01:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2018-12-01 18:01:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 18:01:51,621 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:52,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 63 states and 91 transitions. [2018-12-01 18:01:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 91 transitions. [2018-12-01 18:01:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-01 18:01:52,094 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:52,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 74 states and 109 transitions. [2018-12-01 18:01:52,729 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 109 transitions. [2018-12-01 18:01:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:01:52,729 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 92 states and 142 transitions. [2018-12-01 18:01:54,909 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 142 transitions. [2018-12-01 18:01:54,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-01 18:01:54,910 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 103 states and 162 transitions. [2018-12-01 18:01:56,777 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 162 transitions. [2018-12-01 18:01:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:01:56,778 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:57,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 105 states and 170 transitions. [2018-12-01 18:01:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 170 transitions. [2018-12-01 18:01:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:01:57,328 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 107 states and 178 transitions. [2018-12-01 18:01:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 178 transitions. [2018-12-01 18:01:57,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-01 18:01:57,854 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 18:01:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:01:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 109 states and 186 transitions. [2018-12-01 18:01:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 186 transitions. [2018-12-01 18:01:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-01 18:01:58,214 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:01:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 18:01:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 18:01:59,948 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2018-12-01 18:02:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-01 18:02:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 118 states and 211 transitions. [2018-12-01 18:02:03,405 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 211 transitions. [2018-12-01 18:02:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-01 18:02:03,405 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-01 18:02:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:02:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:02:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:02:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 18:02:03,987 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 16 iterations. [2018-12-01 18:02:04,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 01.12 06:02:04 ImpRootNode [2018-12-01 18:02:04,013 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-01 18:02:04,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 18:02:04,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 18:02:04,014 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 18:02:04,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 06:01:51" (3/4) ... [2018-12-01 18:02:04,015 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-01 18:02:04,055 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2d7ac1cb-1868-4b7b-bb99-4e2719565823/bin-2019/ukojak/witness.graphml [2018-12-01 18:02:04,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 18:02:04,056 INFO L168 Benchmark]: Toolchain (without parser) took 13856.36 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 312.5 MB). Free memory was 949.5 MB in the beginning and 939.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 322.5 MB. Max. memory is 11.5 GB. [2018-12-01 18:02:04,057 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:02:04,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -114.0 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-01 18:02:04,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 18:02:04,057 INFO L168 Benchmark]: Boogie Preprocessor took 19.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2018-12-01 18:02:04,058 INFO L168 Benchmark]: RCFGBuilder took 556.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 989.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2018-12-01 18:02:04,058 INFO L168 Benchmark]: CodeCheck took 12935.67 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 989.8 MB in the beginning and 939.5 MB in the end (delta: 50.3 MB). Peak memory consumption was 278.9 MB. Max. memory is 11.5 GB. [2018-12-01 18:02:04,058 INFO L168 Benchmark]: Witness Printer took 42.11 ms. Allocated memory is still 1.3 GB. Free memory was 939.5 MB in the beginning and 939.5 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-12-01 18:02:04,060 INFO L336 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, 54 locations, 1 error locations. UNSAFE Result, 12.8s OverallTime, 16 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 651520 SDtfs, 139792 SDslu, 167460 SDs, 0 SdLazy, 248332 SolverSat, 56684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3187 GetRequests, 2920 SyntacticMatches, 95 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14644 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 82864 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 15/60 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 609]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L541] struct TreeNode* root = malloc(sizeof(*root)), *n; [L542] root->left = ((void *)0) [L543] root->right = ((void *)0) [L544] COND FALSE !(__VERIFIER_nondet_int()) [L563] n = ((void *)0) [L564] struct TreeNode* pred; [L565] COND TRUE \read(*root) [L566] pred = ((void *)0) [L567] n = root [L568] EXPR n->left [L568] n->left || n->right [L568] EXPR n->right [L568] n->left || n->right [L568] COND FALSE !(n->left || n->right) [L575] COND FALSE !(\read(*pred)) [L581] root = ((void *)0) [L565] COND FALSE !(\read(*root)) [L584] List a = (List) malloc(sizeof(struct node)); [L585] COND FALSE !(a == 0) [L586] List t; [L587] List p = a; [L588] COND TRUE __VERIFIER_nondet_int() [L589] p->h = 1 [L590] t = (List) malloc(sizeof(struct node)) [L591] COND FALSE !(t == 0) [L592] p->n = t [L593] EXPR p->n [L593] p = p->n [L588] COND FALSE !(__VERIFIER_nondet_int()) [L595] COND TRUE __VERIFIER_nondet_int() [L596] p->h = 2 [L597] t = (List) malloc(sizeof(struct node)) [L598] COND FALSE !(t == 0) [L599] p->n = t [L600] EXPR p->n [L600] p = p->n [L595] COND FALSE !(__VERIFIER_nondet_int()) [L602] p->h = 3 [L603] p = a [L604] EXPR p->h [L604] COND FALSE !(p->h == 2) [L606] EXPR p->h [L606] COND TRUE p->h == 1 [L607] EXPR p->n [L607] p = p->n [L606] EXPR p->h [L606] COND FALSE !(p->h == 1) [L608] EXPR p->h [L608] COND TRUE p->h != 3 [L609] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 83.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -114.0 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.28 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 556.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 989.8 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. * CodeCheck took 12935.67 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 228.6 MB). Free memory was 989.8 MB in the beginning and 939.5 MB in the end (delta: 50.3 MB). Peak memory consumption was 278.9 MB. Max. memory is 11.5 GB. * Witness Printer took 42.11 ms. Allocated memory is still 1.3 GB. Free memory was 939.5 MB in the beginning and 939.5 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...