./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/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 981f9605b8ccc487ab91eaf7b6ca746d6b73f5da ............................................................................................................................................................................................................................................................ 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 0.1.23-1dbac8b [2018-11-10 02:58:53,546 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 02:58:53,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 02:58:53,556 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 02:58:53,556 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 02:58:53,557 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 02:58:53,557 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 02:58:53,559 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 02:58:53,560 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 02:58:53,561 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 02:58:53,562 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 02:58:53,562 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 02:58:53,563 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 02:58:53,563 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 02:58:53,564 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 02:58:53,565 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 02:58:53,566 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 02:58:53,567 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 02:58:53,569 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 02:58:53,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 02:58:53,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 02:58:53,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 02:58:53,573 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 02:58:53,574 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 02:58:53,574 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 02:58:53,575 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 02:58:53,575 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 02:58:53,576 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 02:58:53,577 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 02:58:53,577 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 02:58:53,578 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 02:58:53,578 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 02:58:53,578 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 02:58:53,579 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 02:58:53,579 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 02:58:53,580 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 02:58:53,580 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-10 02:58:53,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 02:58:53,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 02:58:53,592 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 02:58:53,592 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 02:58:53,593 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 02:58:53,593 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 02:58:53,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 02:58:53,593 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 02:58:53,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 02:58:53,594 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 02:58:53,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 02:58:53,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 02:58:53,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 02:58:53,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 02:58:53,595 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 02:58:53,595 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 02:58:53,595 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 02:58:53,595 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-10 02:58:53,595 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-10 02:58:53,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 02:58:53,596 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 02:58:53,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-10 02:58:53,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 02:58:53,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 02:58:53,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 02:58:53,596 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-10 02:58:53,597 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 02:58:53,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 02:58:53,597 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_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/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 -> 981f9605b8ccc487ab91eaf7b6ca746d6b73f5da [2018-11-10 02:58:53,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 02:58:53,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 02:58:53,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 02:58:53,633 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 02:58:53,634 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 02:58:53,634 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/../../sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i [2018-11-10 02:58:53,671 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/data/a99df7a18/984484d1ae174aa69fe5191130a51603/FLAGcd3c782fb [2018-11-10 02:58:54,059 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 02:58:54,059 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/sv-benchmarks/c/list-properties/alternating_list_false-unreach-call_false-valid-memcleanup.i [2018-11-10 02:58:54,070 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/data/a99df7a18/984484d1ae174aa69fe5191130a51603/FLAGcd3c782fb [2018-11-10 02:58:54,081 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/data/a99df7a18/984484d1ae174aa69fe5191130a51603 [2018-11-10 02:58:54,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 02:58:54,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 02:58:54,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 02:58:54,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 02:58:54,088 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 02:58:54,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a75b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54, skipping insertion in model container [2018-11-10 02:58:54,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 02:58:54,128 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 02:58:54,338 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:58:54,347 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 02:58:54,381 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:58:54,407 INFO L193 MainTranslator]: Completed translation [2018-11-10 02:58:54,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54 WrapperNode [2018-11-10 02:58:54,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 02:58:54,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 02:58:54,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 02:58:54,409 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 02:58:54,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 02:58:54,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 02:58:54,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 02:58:54,491 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 02:58:54,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 02:58:54,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 02:58:54,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 02:58:54,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 02:58:54,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:58:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/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 [2018-11-10 02:58:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 02:58:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 02:58:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 02:58:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 02:58:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 02:58:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 02:58:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 02:58:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 02:58:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 02:58:54,901 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 02:58:54,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:58:54 BoogieIcfgContainer [2018-11-10 02:58:54,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 02:58:54,902 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-10 02:58:54,902 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-10 02:58:54,909 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-10 02:58:54,909 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:58:54" (1/1) ... [2018-11-10 02:58:54,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:58:54,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:58:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 26 states and 35 transitions. [2018-11-10 02:58:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2018-11-10 02:58:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 02:58:54,946 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:58:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:58:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:58:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:58:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 26 states and 32 transitions. [2018-11-10 02:58:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2018-11-10 02:58:55,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 02:58:55,037 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:58:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:58:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:58:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:58:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 29 states and 37 transitions. [2018-11-10 02:58:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2018-11-10 02:58:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 02:58:55,092 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:58:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:58:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:58:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-10 02:58:55,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 34 states and 45 transitions. [2018-11-10 02:58:55,330 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2018-11-10 02:58:55,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 02:58:55,331 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2018-11-10 02:58:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:58:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:58:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:58:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:58:55,427 WARN L496 CodeCheckObserver]: This program is UNSAFE, Check terminated with 4 iterations. [2018-11-10 02:58:55,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 10.11 02:58:55 ImpRootNode [2018-11-10 02:58:55,456 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-10 02:58:55,457 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 02:58:55,457 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 02:58:55,457 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 02:58:55,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:58:54" (3/4) ... [2018-11-10 02:58:55,460 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 02:58:55,503 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cb4f62ab-dc80-4484-a553-b713b4ad5e1d/bin-2019/ukojak/witness.graphml [2018-11-10 02:58:55,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 02:58:55,504 INFO L168 Benchmark]: Toolchain (without parser) took 1420.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 955.4 MB in the beginning and 1.0 GB in the end (delta: -62.3 MB). Peak memory consumption was 72.5 MB. Max. memory is 11.5 GB. [2018-11-10 02:58:55,506 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:58:55,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.73 ms. Allocated memory is still 1.0 GB. Free memory was 955.4 MB in the beginning and 928.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 02:58:55,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 928.5 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-10 02:58:55,507 INFO L168 Benchmark]: Boogie Preprocessor took 18.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:58:55,507 INFO L168 Benchmark]: RCFGBuilder took 392.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. [2018-11-10 02:58:55,508 INFO L168 Benchmark]: CodeCheck took 554.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 11.5 GB. [2018-11-10 02:58:55,508 INFO L168 Benchmark]: Witness Printer took 47.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-10 02:58:55,511 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, 52 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 110 SDtfs, 24 SDslu, 32 SDs, 0 SdLazy, 52 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 601 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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: 668]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = 1; [L628] EXPR, FCALL malloc(sizeof(struct node)) [L628] List a = (List) malloc(sizeof(struct node)); [L629] COND FALSE !(a == 0) [L630] List t; [L631] List p = a; [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 2 [L635] flag = 0 [L640] EXPR, FCALL malloc(sizeof(struct node)) [L640] t = (List) malloc(sizeof(struct node)) [L641] COND FALSE !(t == 0) [L642] CALL p->n = t [L642] RET p->n = t [L643] EXPR, FCALL p->n [L643] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L645] FCALL p->h = 3 [L646] p = a [L647] flag = 1 [L648] EXPR, FCALL p->h [L648] COND TRUE p->h != 3 [L649] COND TRUE \read(flag) [L650] flag = 0 [L651] EXPR, FCALL p->h [L651] COND TRUE p->h != 1 [L668] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 322.73 ms. Allocated memory is still 1.0 GB. Free memory was 955.4 MB in the beginning and 928.5 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 928.5 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.39 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 392.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. * CodeCheck took 554.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 11.5 GB. * Witness Printer took 47.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...