./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_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/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_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/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 [2018-12-08 14:59:37,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 14:59:37,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 14:59:37,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 14:59:37,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 14:59:37,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 14:59:37,488 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 14:59:37,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 14:59:37,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 14:59:37,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 14:59:37,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 14:59:37,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 14:59:37,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 14:59:37,493 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 14:59:37,494 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 14:59:37,495 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 14:59:37,495 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 14:59:37,496 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 14:59:37,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 14:59:37,499 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 14:59:37,499 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 14:59:37,500 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 14:59:37,501 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 14:59:37,501 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 14:59:37,501 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 14:59:37,502 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 14:59:37,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 14:59:37,503 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 14:59:37,503 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 14:59:37,504 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 14:59:37,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 14:59:37,504 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 14:59:37,504 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 14:59:37,504 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 14:59:37,505 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 14:59:37,505 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 14:59:37,505 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2018-12-08 14:59:37,513 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 14:59:37,513 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 14:59:37,513 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 14:59:37,513 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 14:59:37,513 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 14:59:37,514 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 14:59:37,514 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 14:59:37,515 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 14:59:37,515 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 14:59:37,515 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 14:59:37,516 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 14:59:37,516 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 14:59:37,516 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 14:59:37,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 14:59:37,517 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_fa7ee8c0-78bd-464f-8b00-1143470ff005/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 [2018-12-08 14:59:37,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 14:59:37,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 14:59:37,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 14:59:37,543 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 14:59:37,543 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 14:59:37,543 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-08 14:59:37,577 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/data/4add67189/885f183f14b54438ac958e1ce19ccd44/FLAG1b9d5957e [2018-12-08 14:59:38,023 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 14:59:38,024 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-08 14:59:38,029 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/data/4add67189/885f183f14b54438ac958e1ce19ccd44/FLAG1b9d5957e [2018-12-08 14:59:38,037 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/data/4add67189/885f183f14b54438ac958e1ce19ccd44 [2018-12-08 14:59:38,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 14:59:38,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 14:59:38,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 14:59:38,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 14:59:38,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 14:59:38,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@89db293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38, skipping insertion in model container [2018-12-08 14:59:38,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 14:59:38,073 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 14:59:38,227 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:59:38,233 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 14:59:38,285 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:59:38,311 INFO L195 MainTranslator]: Completed translation [2018-12-08 14:59:38,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38 WrapperNode [2018-12-08 14:59:38,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 14:59:38,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 14:59:38,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 14:59:38,312 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 14:59:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 14:59:38,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 14:59:38,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 14:59:38,337 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 14:59:38,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... [2018-12-08 14:59:38,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 14:59:38,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 14:59:38,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 14:59:38,355 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 14:59:38,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/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 [2018-12-08 14:59:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2018-12-08 14:59:38,387 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2018-12-08 14:59:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 14:59:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 14:59:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 14:59:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 14:59:38,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 14:59:38,387 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 14:59:38,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 14:59:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-08 14:59:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-08 14:59:38,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 14:59:38,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 14:59:38,565 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 14:59:38,566 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-08 14:59:38,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:59:38 BoogieIcfgContainer [2018-12-08 14:59:38,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 14:59:38,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 14:59:38,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 14:59:38,569 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 14:59:38,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 02:59:38" (1/3) ... [2018-12-08 14:59:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0dbc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 02:59:38, skipping insertion in model container [2018-12-08 14:59:38,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:59:38" (2/3) ... [2018-12-08 14:59:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0dbc04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 02:59:38, skipping insertion in model container [2018-12-08 14:59:38,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:59:38" (3/3) ... [2018-12-08 14:59:38,572 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag_false-unreach-call_false-valid-memcleanup.i [2018-12-08 14:59:38,580 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 14:59:38,587 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-12-08 14:59:38,600 INFO L257 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2018-12-08 14:59:38,618 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 14:59:38,618 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 14:59:38,618 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 14:59:38,618 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 14:59:38,618 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 14:59:38,618 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 14:59:38,618 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 14:59:38,618 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 14:59:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-12-08 14:59:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 14:59:38,633 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:59:38,633 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:59:38,635 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr19REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 14:59:38,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:59:38,638 INFO L82 PathProgramCache]: Analyzing trace with hash 635705943, now seen corresponding path program 1 times [2018-12-08 14:59:38,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:59:38,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:38,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:59:38,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:38,668 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:59:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:59:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:59:38,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:59:38,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 14:59:38,717 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:59:38,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 14:59:38,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 14:59:38,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 14:59:38,730 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2018-12-08 14:59:38,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:59:38,741 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-12-08 14:59:38,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 14:59:38,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-12-08 14:59:38,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:59:38,746 INFO L225 Difference]: With dead ends: 61 [2018-12-08 14:59:38,747 INFO L226 Difference]: Without dead ends: 53 [2018-12-08 14:59:38,748 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 [2018-12-08 14:59:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-08 14:59:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-12-08 14:59:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-08 14:59:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2018-12-08 14:59:38,769 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 10 [2018-12-08 14:59:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:59:38,769 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2018-12-08 14:59:38,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 14:59:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2018-12-08 14:59:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 14:59:38,770 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:59:38,770 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:59:38,770 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr19REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 14:59:38,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:59:38,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1767985915, now seen corresponding path program 1 times [2018-12-08 14:59:38,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:59:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:38,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:59:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:38,771 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:59:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:59:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:59:38,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:59:38,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 14:59:38,816 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:59:38,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 14:59:38,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 14:59:38,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 14:59:38,817 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2018-12-08 14:59:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:59:38,905 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-12-08 14:59:38,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 14:59:38,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-08 14:59:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:59:38,908 INFO L225 Difference]: With dead ends: 61 [2018-12-08 14:59:38,908 INFO L226 Difference]: Without dead ends: 61 [2018-12-08 14:59:38,908 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 [2018-12-08 14:59:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-12-08 14:59:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-12-08 14:59:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-12-08 14:59:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2018-12-08 14:59:38,914 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 11 [2018-12-08 14:59:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:59:38,914 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2018-12-08 14:59:38,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 14:59:38,914 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2018-12-08 14:59:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 14:59:38,914 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:59:38,914 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:59:38,915 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr19REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 14:59:38,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:59:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1767985914, now seen corresponding path program 1 times [2018-12-08 14:59:38,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:59:38,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:38,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:59:38,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:38,916 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:59:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:59:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:59:38,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:59:38,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 14:59:38,964 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:59:38,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 14:59:38,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 14:59:38,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 14:59:38,965 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 4 states. [2018-12-08 14:59:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:59:39,047 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2018-12-08 14:59:39,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 14:59:39,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-08 14:59:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:59:39,048 INFO L225 Difference]: With dead ends: 72 [2018-12-08 14:59:39,048 INFO L226 Difference]: Without dead ends: 72 [2018-12-08 14:59:39,049 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 [2018-12-08 14:59:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-08 14:59:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2018-12-08 14:59:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-08 14:59:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-12-08 14:59:39,052 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 11 [2018-12-08 14:59:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:59:39,052 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-12-08 14:59:39,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 14:59:39,052 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-12-08 14:59:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 14:59:39,053 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:59:39,053 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:59:39,053 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr19REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-12-08 14:59:39,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:59:39,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1764024833, now seen corresponding path program 1 times [2018-12-08 14:59:39,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:59:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:39,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:59:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:59:39,054 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:59:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:59:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 14:59:39,085 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 14:59:39,093 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-08 14:59:39,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 02:59:39 BoogieIcfgContainer [2018-12-08 14:59:39,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 14:59:39,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 14:59:39,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 14:59:39,106 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 14:59:39,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:59:38" (3/4) ... [2018-12-08 14:59:39,109 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 14:59:39,110 WARN L416 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-12-08 14:59:39,135 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_fa7ee8c0-78bd-464f-8b00-1143470ff005/bin-2019/utaipan/witness.graphml [2018-12-08 14:59:39,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 14:59:39,136 INFO L168 Benchmark]: Toolchain (without parser) took 1096.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 957.1 MB in the beginning and 990.2 MB in the end (delta: -33.1 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. [2018-12-08 14:59:39,136 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:59:39,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -137.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. [2018-12-08 14:59:39,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 14:59:39,137 INFO L168 Benchmark]: Boogie Preprocessor took 17.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:59:39,137 INFO L168 Benchmark]: RCFGBuilder took 211.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-12-08 14:59:39,138 INFO L168 Benchmark]: TraceAbstraction took 539.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.5 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 11.5 GB. [2018-12-08 14:59:39,138 INFO L168 Benchmark]: Witness Printer took 29.23 ms. Allocated memory is still 1.1 GB. Free memory was 995.5 MB in the beginning and 990.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 14:59:39,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -137.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 211.16 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 539.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 995.5 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 11.5 GB. * Witness Printer took 29.23 ms. Allocated memory is still 1.1 GB. Free memory was 995.5 MB in the beginning and 990.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 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, 0.2s 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...