./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_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_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1d36d9c90d70f68ab71543f184cd64aeaf02e524 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:45:51,645 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:45:51,646 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:45:51,653 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:45:51,653 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:45:51,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:45:51,655 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:45:51,656 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:45:51,657 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:45:51,657 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:45:51,658 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:45:51,658 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:45:51,659 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:45:51,660 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:45:51,660 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:45:51,661 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:45:51,661 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:45:51,662 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:45:51,664 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:45:51,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:45:51,665 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:45:51,666 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:45:51,667 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:45:51,668 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:45:51,668 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:45:51,668 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:45:51,669 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:45:51,669 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:45:51,670 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:45:51,671 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:45:51,671 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:45:51,671 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:45:51,671 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:45:51,672 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:45:51,672 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:45:51,673 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:45:51,673 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 11:45:51,682 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:45:51,682 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:45:51,682 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 11:45:51,683 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 11:45:51,683 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 11:45:51,684 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:45:51,684 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 11:45:51,684 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:45:51,684 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 11:45:51,684 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 11:45:51,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:45:51,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 11:45:51,686 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 11:45:51,686 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan 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 -> Taipan 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 -> 1d36d9c90d70f68ab71543f184cd64aeaf02e524 [2018-11-10 11:45:51,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:45:51,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:45:51,720 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:45:51,721 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:45:51,721 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:45:51,721 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-10 11:45:51,759 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/data/a00f2f7f4/154abc2f85b44b5f92425838624d725b/FLAGef33dff54 [2018-11-10 11:45:52,127 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:45:52,128 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-10 11:45:52,136 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/data/a00f2f7f4/154abc2f85b44b5f92425838624d725b/FLAGef33dff54 [2018-11-10 11:45:52,145 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/data/a00f2f7f4/154abc2f85b44b5f92425838624d725b [2018-11-10 11:45:52,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:45:52,148 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 11:45:52,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:45:52,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:45:52,152 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:45:52,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b24ca81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52, skipping insertion in model container [2018-11-10 11:45:52,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:45:52,187 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:45:52,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:45:52,385 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:45:52,411 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:45:52,441 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:45:52,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52 WrapperNode [2018-11-10 11:45:52,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:45:52,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 11:45:52,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 11:45:52,443 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 11:45:52,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 11:45:52,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:45:52,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:45:52,511 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:45:52,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... [2018-11-10 11:45:52,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:45:52,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:45:52,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:45:52,527 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:45:52,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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:2000 [2018-11-10 11:45:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2018-11-10 11:45:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2018-11-10 11:45:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2018-11-10 11:45:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2018-11-10 11:45:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 11:45:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 11:45:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2018-11-10 11:45:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2018-11-10 11:45:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 11:45:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 11:45:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 11:45:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 11:45:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:45:52,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:45:52,754 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:45:52,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:52 BoogieIcfgContainer [2018-11-10 11:45:52,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:45:52,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 11:45:52,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 11:45:52,756 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 11:45:52,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:45:52" (1/3) ... [2018-11-10 11:45:52,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed88e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:45:52, skipping insertion in model container [2018-11-10 11:45:52,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:52" (2/3) ... [2018-11-10 11:45:52,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed88e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:45:52, skipping insertion in model container [2018-11-10 11:45:52,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:52" (3/3) ... [2018-11-10 11:45:52,758 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-10 11:45:52,763 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 11:45:52,768 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 11:45:52,777 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 11:45:52,797 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 11:45:52,797 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 11:45:52,797 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 11:45:52,797 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:45:52,798 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:45:52,798 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 11:45:52,798 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:45:52,798 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 11:45:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-11-10 11:45:52,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 11:45:52,811 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:52,812 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:52,813 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:52,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:52,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1968350456, now seen corresponding path program 1 times [2018-11-10 11:45:52,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:52,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:52,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:52,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:52,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:52,904 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 11:45:52,906 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:45:52,906 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 11:45:52,906 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 11:45:52,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 11:45:52,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 11:45:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:45:52,918 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-11-10 11:45:52,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:52,938 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2018-11-10 11:45:52,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 11:45:52,940 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-11-10 11:45:52,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:52,947 INFO L225 Difference]: With dead ends: 80 [2018-11-10 11:45:52,947 INFO L226 Difference]: Without dead ends: 31 [2018-11-10 11:45:52,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 11:45:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-10 11:45:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-10 11:45:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-10 11:45:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-11-10 11:45:52,979 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2018-11-10 11:45:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:52,979 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-11-10 11:45:52,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 11:45:52,980 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-11-10 11:45:52,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-10 11:45:52,980 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:52,981 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:52,981 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:52,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2046027917, now seen corresponding path program 1 times [2018-11-10 11:45:52,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:52,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:52,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:52,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:52,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:53,089 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 11:45:53,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:45:53,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 11:45:53,090 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 11:45:53,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 11:45:53,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:45:53,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:45:53,092 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 5 states. [2018-11-10 11:45:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:53,158 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-11-10 11:45:53,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:45:53,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-11-10 11:45:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:53,159 INFO L225 Difference]: With dead ends: 50 [2018-11-10 11:45:53,159 INFO L226 Difference]: Without dead ends: 35 [2018-11-10 11:45:53,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 11:45:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-10 11:45:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-10 11:45:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-10 11:45:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-11-10 11:45:53,164 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2018-11-10 11:45:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:53,165 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-11-10 11:45:53,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 11:45:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-11-10 11:45:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-10 11:45:53,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:53,165 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:53,165 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:53,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1240985643, now seen corresponding path program 1 times [2018-11-10 11:45:53,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:53,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:53,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:53,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:53,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:45:53,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:45:53,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-10 11:45:53,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 11:45:53,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 11:45:53,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 11:45:53,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 11:45:53,254 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 9 states. [2018-11-10 11:45:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:53,327 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-11-10 11:45:53,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 11:45:53,327 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-11-10 11:45:53,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:53,328 INFO L225 Difference]: With dead ends: 44 [2018-11-10 11:45:53,328 INFO L226 Difference]: Without dead ends: 37 [2018-11-10 11:45:53,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-10 11:45:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-10 11:45:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2018-11-10 11:45:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 11:45:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-11-10 11:45:53,333 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2018-11-10 11:45:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:53,333 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-11-10 11:45:53,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 11:45:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-11-10 11:45:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 11:45:53,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:53,334 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:53,334 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:53,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:53,335 INFO L82 PathProgramCache]: Analyzing trace with hash -361960197, now seen corresponding path program 1 times [2018-11-10 11:45:53,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:53,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:53,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:53,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:53,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 11:45:53,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:53,404 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 11:45:53,404 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-11-10 11:45:53,406 INFO L202 CegarAbsIntRunner]: [4], [5], [21], [25], [29], [31], [37], [39], [43], [44], [48], [52], [54], [57], [63], [70], [72], [75], [80], [83], [87], [91], [93], [97], [98], [101], [102], [103], [105], [106], [107], [108] [2018-11-10 11:45:53,439 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-10 11:45:53,439 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-10 11:45:54,088 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-10 11:45:54,089 INFO L272 AbstractInterpreter]: Visited 32 different actions 163 times. Merged at 11 different actions 113 times. Widened at 1 different actions 11 times. Found 17 fixpoints after 4 different actions. Largest state had 35 variables. [2018-11-10 11:45:54,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:54,100 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-10 11:45:54,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:54,100 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:45:54,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:54,106 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-10 11:45:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:54,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:45:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 11:45:54,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:45:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 11:45:54,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 11:45:54,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2018-11-10 11:45:54,276 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:45:54,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 11:45:54,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 11:45:54,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-10 11:45:54,277 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 6 states. [2018-11-10 11:45:54,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:54,311 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-11-10 11:45:54,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 11:45:54,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-11-10 11:45:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:54,313 INFO L225 Difference]: With dead ends: 58 [2018-11-10 11:45:54,313 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 11:45:54,313 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-10 11:45:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 11:45:54,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-11-10 11:45:54,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 11:45:54,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-10 11:45:54,318 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 34 [2018-11-10 11:45:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:54,318 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-10 11:45:54,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 11:45:54,318 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-10 11:45:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 11:45:54,319 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:54,319 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:54,320 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:54,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:54,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1152876989, now seen corresponding path program 2 times [2018-11-10 11:45:54,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:54,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:54,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:45:54,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:54,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:45:54,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:54,413 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 11:45:54,413 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 11:45:54,414 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 11:45:54,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:54,414 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:45:54,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 11:45:54,430 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-10 11:45:54,456 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 11:45:54,456 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:45:54,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:45:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 11:45:54,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:45:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 11:45:54,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 11:45:54,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 19 [2018-11-10 11:45:54,672 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:45:54,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 11:45:54,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 11:45:54,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-11-10 11:45:54,673 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 16 states. [2018-11-10 11:45:54,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:54,866 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-11-10 11:45:54,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 11:45:54,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2018-11-10 11:45:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:54,867 INFO L225 Difference]: With dead ends: 67 [2018-11-10 11:45:54,867 INFO L226 Difference]: Without dead ends: 47 [2018-11-10 11:45:54,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2018-11-10 11:45:54,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-10 11:45:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-11-10 11:45:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 11:45:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-10 11:45:54,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 38 [2018-11-10 11:45:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:54,870 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-10 11:45:54,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 11:45:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-10 11:45:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-10 11:45:54,871 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:54,871 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:54,871 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:54,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:54,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1781986097, now seen corresponding path program 3 times [2018-11-10 11:45:54,872 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:54,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:54,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:45:54,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:54,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:45:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:45:55,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:55,076 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-10 11:45:55,077 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-10 11:45:55,077 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-10 11:45:55,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:45:55,077 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:45:55,090 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 11:45:55,090 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-11-10 11:45:55,116 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 11:45:55,116 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:45:55,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:45:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 11:45:55,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 11:45:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 11:45:55,252 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-10 11:45:55,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 22 [2018-11-10 11:45:55,252 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-10 11:45:55,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 11:45:55,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 11:45:55,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2018-11-10 11:45:55,253 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 21 states. [2018-11-10 11:45:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:45:55,648 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-10 11:45:55,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-10 11:45:55,648 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2018-11-10 11:45:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 11:45:55,649 INFO L225 Difference]: With dead ends: 67 [2018-11-10 11:45:55,649 INFO L226 Difference]: Without dead ends: 60 [2018-11-10 11:45:55,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 11:45:55,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-10 11:45:55,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2018-11-10 11:45:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-10 11:45:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-11-10 11:45:55,658 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 44 [2018-11-10 11:45:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 11:45:55,658 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-11-10 11:45:55,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 11:45:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-11-10 11:45:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 11:45:55,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 11:45:55,659 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 11:45:55,660 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 11:45:55,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:45:55,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1315989847, now seen corresponding path program 4 times [2018-11-10 11:45:55,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 11:45:55,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:55,661 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:45:55,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:45:55,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 11:45:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:45:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:45:55,728 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 11:45:55,737 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,738 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,738 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,738 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,738 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,738 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,739 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,739 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,739 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,739 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,739 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,740 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,740 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,740 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,740 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,741 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,741 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,741 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,742 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,742 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,742 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,742 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,743 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,743 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,743 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,743 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,743 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,744 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,744 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,744 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:45:55 BoogieIcfgContainer [2018-11-10 11:45:55,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 11:45:55,762 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:45:55,762 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:45:55,762 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:45:55,762 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:52" (3/4) ... [2018-11-10 11:45:55,764 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 11:45:55,765 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,765 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,766 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,766 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,766 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,766 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,766 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,766 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,767 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,768 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,769 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,769 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,769 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 11:45:55,802 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b04d49c6-c18b-4b3f-95b9-3a7a88543a72/bin-2019/utaipan/witness.graphml [2018-11-10 11:45:55,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:45:55,802 INFO L168 Benchmark]: Toolchain (without parser) took 3654.81 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 339.7 MB). Free memory was 956.5 MB in the beginning and 1.3 GB in the end (delta: -368.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:45:55,803 INFO L168 Benchmark]: CDTParser took 0.13 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 11:45:55,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.34 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 929.6 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:55,804 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 929.6 MB in the beginning and 1.1 GB in the end (delta: -215.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:55,804 INFO L168 Benchmark]: Boogie Preprocessor took 16.10 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 11:45:55,804 INFO L168 Benchmark]: RCFGBuilder took 227.37 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:55,805 INFO L168 Benchmark]: TraceAbstraction took 3007.35 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.7 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -212.0 MB). Peak memory consumption was 391.2 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:55,805 INFO L168 Benchmark]: Witness Printer took 39.99 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. [2018-11-10 11:45:55,807 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 293.34 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 929.6 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 67.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 929.6 MB in the beginning and 1.1 GB in the end (delta: -215.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.10 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 227.37 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: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3007.35 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 188.7 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -212.0 MB). Peak memory consumption was 391.2 MB. Max. memory is 11.5 GB. * Witness Printer took 39.99 ms. Allocated memory is still 1.4 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; VAL [len=2] [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, len=2, len < 32 && __VERIFIER_nondet_int()=0] [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] CALL new_head->next = head [L570] RET new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] CALL new_head->next = head [L570] RET new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] CALL new_head->next = head [L570] RET new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] RET return head; [L596] EXPR sll_create(len + 1) VAL [len=2, sll_create(len + 1)={8:0}] [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] CALL, EXPR head->next [L580] RET, EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] CALL, EXPR head->next [L580] RET, EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] CALL, EXPR head->next [L580] RET, EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] RET return len; [L597] EXPR sll_length(s) VAL [len=2, s={8:0}, sll_length(s)=3] [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() VAL [len=2, s={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. UNSAFE Result, 2.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 112 SDslu, 1109 SDs, 0 SdLazy, 730 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 222 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 361 NumberOfCodeBlocks, 358 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 45356 SizeOfPredicates, 5 NumberOfNonLiveVariables, 602 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 58/116 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...