./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff ..................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memtrack) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 01:48:25,877 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 01:48:25,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 01:48:25,884 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 01:48:25,884 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 01:48:25,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 01:48:25,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 01:48:25,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 01:48:25,887 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 01:48:25,887 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 01:48:25,888 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 01:48:25,888 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 01:48:25,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 01:48:25,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 01:48:25,889 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 01:48:25,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 01:48:25,890 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 01:48:25,891 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 01:48:25,892 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 01:48:25,893 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 01:48:25,893 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 01:48:25,894 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 01:48:25,895 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 01:48:25,895 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 01:48:25,895 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 01:48:25,896 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 01:48:25,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 01:48:25,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 01:48:25,897 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 01:48:25,898 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 01:48:25,898 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 01:48:25,898 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 01:48:25,898 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 01:48:25,898 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 01:48:25,899 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 01:48:25,899 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 01:48:25,899 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2018-12-03 01:48:25,906 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 01:48:25,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 01:48:25,907 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 01:48:25,907 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 01:48:25,907 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 01:48:25,908 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 01:48:25,908 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 01:48:25,909 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 01:48:25,909 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 01:48:25,909 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 01:48:25,909 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 01:48:25,909 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 01:48:25,910 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 01:48:25,911 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 01:48:25,911 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 01:48:25,911 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 01:48:25,911 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 01:48:25,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 01:48:25,911 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 01:48:25,911 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 01:48:25,911 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 01:48:25,912 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 01:48:25,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 01:48:25,912 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_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/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 valid-memcleanup) ) 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 -> 6f9ac6d0b4f176160999f5c2051c2fd2150d4bff [2018-12-03 01:48:25,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 01:48:25,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 01:48:25,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 01:48:25,943 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 01:48:25,944 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 01:48:25,944 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-03 01:48:25,985 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/data/b88ee3972/b3c87637dd004f38b64c24a7b822e26e/FLAGadff7ba79 [2018-12-03 01:48:26,316 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 01:48:26,317 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-03 01:48:26,322 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/data/b88ee3972/b3c87637dd004f38b64c24a7b822e26e/FLAGadff7ba79 [2018-12-03 01:48:26,331 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/data/b88ee3972/b3c87637dd004f38b64c24a7b822e26e [2018-12-03 01:48:26,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 01:48:26,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 01:48:26,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 01:48:26,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 01:48:26,336 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 01:48:26,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178df10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26, skipping insertion in model container [2018-12-03 01:48:26,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 01:48:26,360 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 01:48:26,502 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 01:48:26,509 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 01:48:26,570 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 01:48:26,592 INFO L195 MainTranslator]: Completed translation [2018-12-03 01:48:26,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26 WrapperNode [2018-12-03 01:48:26,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 01:48:26,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 01:48:26,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 01:48:26,593 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 01:48:26,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 01:48:26,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 01:48:26,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 01:48:26,611 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 01:48:26,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... [2018-12-03 01:48:26,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 01:48:26,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 01:48:26,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 01:48:26,628 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 01:48:26,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/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 [2018-12-03 01:48:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-03 01:48:26,658 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-03 01:48:26,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 01:48:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 01:48:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-03 01:48:26,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 01:48:26,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 01:48:26,830 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 01:48:26,830 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-03 01:48:26,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:48:26 BoogieIcfgContainer [2018-12-03 01:48:26,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 01:48:26,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 01:48:26,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 01:48:26,833 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 01:48:26,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 01:48:26" (1/3) ... [2018-12-03 01:48:26,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1703a320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 01:48:26, skipping insertion in model container [2018-12-03 01:48:26,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:48:26" (2/3) ... [2018-12-03 01:48:26,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1703a320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 01:48:26, skipping insertion in model container [2018-12-03 01:48:26,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:48:26" (3/3) ... [2018-12-03 01:48:26,835 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-03 01:48:26,840 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 01:48:26,845 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-12-03 01:48:26,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2018-12-03 01:48:26,867 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 01:48:26,868 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 01:48:26,868 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 01:48:26,868 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 01:48:26,868 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 01:48:26,868 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 01:48:26,868 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 01:48:26,868 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 01:48:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-12-03 01:48:26,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 01:48:26,882 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:48:26,882 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:48:26,883 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-03 01:48:26,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:48:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash 635705943, now seen corresponding path program 1 times [2018-12-03 01:48:26,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:48:26,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:26,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:48:26,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:26,916 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:48:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:48:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:48:26,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:48:26,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 01:48:26,963 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:48:26,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 01:48:26,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 01:48:26,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 01:48:26,975 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2018-12-03 01:48:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:48:26,986 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-12-03 01:48:26,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 01:48:26,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-03 01:48:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:48:26,991 INFO L225 Difference]: With dead ends: 61 [2018-12-03 01:48:26,991 INFO L226 Difference]: Without dead ends: 53 [2018-12-03 01:48:26,992 INFO L631 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 [2018-12-03 01:48:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-03 01:48:27,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-12-03 01:48:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-03 01:48:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-12-03 01:48:27,014 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2018-12-03 01:48:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:48:27,014 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-12-03 01:48:27,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 01:48:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-12-03 01:48:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 01:48:27,014 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:48:27,015 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:48:27,015 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-03 01:48:27,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:48:27,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1767985915, now seen corresponding path program 1 times [2018-12-03 01:48:27,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:48:27,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:27,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:48:27,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:27,016 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:48:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:48:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:48:27,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:48:27,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 01:48:27,053 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:48:27,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 01:48:27,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 01:48:27,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 01:48:27,054 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2018-12-03 01:48:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:48:27,131 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-12-03 01:48:27,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 01:48:27,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-03 01:48:27,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:48:27,133 INFO L225 Difference]: With dead ends: 61 [2018-12-03 01:48:27,133 INFO L226 Difference]: Without dead ends: 61 [2018-12-03 01:48:27,134 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 01:48:27,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-03 01:48:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-12-03 01:48:27,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-03 01:48:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2018-12-03 01:48:27,138 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 11 [2018-12-03 01:48:27,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:48:27,138 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2018-12-03 01:48:27,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 01:48:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2018-12-03 01:48:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-03 01:48:27,138 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:48:27,138 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:48:27,138 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-03 01:48:27,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:48:27,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1767985914, now seen corresponding path program 1 times [2018-12-03 01:48:27,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:48:27,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:27,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:48:27,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:27,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:48:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:48:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:48:27,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:48:27,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 01:48:27,182 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:48:27,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 01:48:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 01:48:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-03 01:48:27,182 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 4 states. [2018-12-03 01:48:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:48:27,265 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2018-12-03 01:48:27,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-03 01:48:27,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-03 01:48:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:48:27,266 INFO L225 Difference]: With dead ends: 72 [2018-12-03 01:48:27,266 INFO L226 Difference]: Without dead ends: 72 [2018-12-03 01:48:27,266 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 01:48:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-03 01:48:27,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2018-12-03 01:48:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-03 01:48:27,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-12-03 01:48:27,269 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 11 [2018-12-03 01:48:27,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:48:27,270 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-12-03 01:48:27,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 01:48:27,270 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-12-03 01:48:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 01:48:27,270 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:48:27,270 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:48:27,270 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-03 01:48:27,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:48:27,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1764024833, now seen corresponding path program 1 times [2018-12-03 01:48:27,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:48:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:27,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:48:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:48:27,271 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:48:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 01:48:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 01:48:27,300 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 01:48:27,307 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-03 01:48:27,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 01:48:27 BoogieIcfgContainer [2018-12-03 01:48:27,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 01:48:27,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 01:48:27,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 01:48:27,317 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 01:48:27,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:48:26" (3/4) ... [2018-12-03 01:48:27,318 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 01:48:27,319 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-03 01:48:27,343 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5cd6aafd-2406-4c9f-9ca7-0b3ddcb8f8a8/bin-2019/utaipan/witness.graphml [2018-12-03 01:48:27,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 01:48:27,344 INFO L168 Benchmark]: Toolchain (without parser) took 1011.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 950.6 MB in the beginning and 1.0 GB in the end (delta: -71.4 MB). Peak memory consumption was 67.0 MB. Max. memory is 11.5 GB. [2018-12-03 01:48:27,345 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 01:48:27,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-03 01:48:27,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.89 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: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-12-03 01:48:27,346 INFO L168 Benchmark]: Boogie Preprocessor took 16.99 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. [2018-12-03 01:48:27,346 INFO L168 Benchmark]: RCFGBuilder took 202.88 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2018-12-03 01:48:27,346 INFO L168 Benchmark]: TraceAbstraction took 484.97 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: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. [2018-12-03 01:48:27,347 INFO L168 Benchmark]: Witness Printer took 27.05 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: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-12-03 01:48:27,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -174.3 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.89 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: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.99 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 202.88 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 484.97 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: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. * Witness Printer took 27.05 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: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 626]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L630] COND FALSE !(a == 0) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L631] p = a VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] p->h = 3 VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L644] p = a VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L645] COND TRUE \read(flag) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L646] EXPR p->h VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L646] COND FALSE !(p->h == 2) [L651] EXPR p->h VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L651] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 21 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 117 SDtfs, 181 SDslu, 35 SDs, 0 SdLazy, 102 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=3, traceCheckStatistics: No data available, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...