./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1_false-valid-free.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1_false-valid-free.i -s /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 138abb836fefa85c9c71aca16cbe8ef2e2e31ba9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:13:51,340 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:13:51,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:13:51,347 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:13:51,347 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:13:51,348 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:13:51,349 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:13:51,349 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:13:51,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:13:51,351 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:13:51,351 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:13:51,351 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:13:51,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:13:51,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:13:51,353 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:13:51,353 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:13:51,354 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:13:51,354 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:13:51,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:13:51,356 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:13:51,357 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:13:51,357 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:13:51,358 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:13:51,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:13:51,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:13:51,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:13:51,360 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:13:51,360 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:13:51,360 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:13:51,361 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:13:51,361 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:13:51,362 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:13:51,362 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:13:51,362 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:13:51,362 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:13:51,363 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:13:51,363 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 09:13:51,370 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:13:51,371 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:13:51,371 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:13:51,371 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:13:51,371 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 09:13:51,371 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 09:13:51,371 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 09:13:51,371 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 09:13:51,372 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 09:13:51,372 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 09:13:51,372 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 09:13:51,372 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 09:13:51,372 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 09:13:51,372 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 09:13:51,372 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 09:13:51,372 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:13:51,373 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:13:51,373 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:13:51,374 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:13:51,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:13:51,374 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_959a8be0-9126-4f07-8541-06146984cafd/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 138abb836fefa85c9c71aca16cbe8ef2e2e31ba9 [2018-12-09 09:13:51,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:13:51,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:13:51,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:13:51,401 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:13:51,401 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:13:51,401 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/../../sv-benchmarks/c/list-ext-properties/test-0158_1_false-valid-free.i [2018-12-09 09:13:51,436 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/data/86c8d8bcb/af106b3d851d42b4ac34a7e9b0cbfeac/FLAG2ae69a042 [2018-12-09 09:13:51,797 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:13:51,798 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/sv-benchmarks/c/list-ext-properties/test-0158_1_false-valid-free.i [2018-12-09 09:13:51,803 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/data/86c8d8bcb/af106b3d851d42b4ac34a7e9b0cbfeac/FLAG2ae69a042 [2018-12-09 09:13:52,168 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/data/86c8d8bcb/af106b3d851d42b4ac34a7e9b0cbfeac [2018-12-09 09:13:52,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:13:52,173 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:13:52,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:13:52,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:13:52,178 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:13:52,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264a29c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52, skipping insertion in model container [2018-12-09 09:13:52,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:13:52,205 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:13:52,338 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:13:52,341 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:13:52,366 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:13:52,422 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:13:52,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52 WrapperNode [2018-12-09 09:13:52,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:13:52,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:13:52,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:13:52,423 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:13:52,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:13:52,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:13:52,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:13:52,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:13:52,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... [2018-12-09 09:13:52,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:13:52,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:13:52,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:13:52,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:13:52,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/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 [2018-12-09 09:13:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:13:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 09:13:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 09:13:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:13:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:13:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:13:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:13:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 09:13:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 09:13:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 09:13:52,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:13:52,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:13:52,639 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:13:52,639 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 09:13:52,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:13:52 BoogieIcfgContainer [2018-12-09 09:13:52,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:13:52,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:13:52,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:13:52,642 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:13:52,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:13:52" (1/3) ... [2018-12-09 09:13:52,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbac1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:13:52, skipping insertion in model container [2018-12-09 09:13:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:13:52" (2/3) ... [2018-12-09 09:13:52,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbac1a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:13:52, skipping insertion in model container [2018-12-09 09:13:52,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:13:52" (3/3) ... [2018-12-09 09:13:52,644 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0158_1_false-valid-free.i [2018-12-09 09:13:52,650 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:13:52,655 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-12-09 09:13:52,664 INFO L257 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2018-12-09 09:13:52,679 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:13:52,679 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 09:13:52,679 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:13:52,679 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:13:52,679 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:13:52,679 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:13:52,679 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:13:52,679 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:13:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-12-09 09:13:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 09:13:52,694 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:13:52,695 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:13:52,696 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 09:13:52,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:13:52,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1124152875, now seen corresponding path program 1 times [2018-12-09 09:13:52,701 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:13:52,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:52,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:13:52,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:52,728 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:13:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:13:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:13:52,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:13:52,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:13:52,791 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:13:52,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:13:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:13:52,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:13:52,804 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2018-12-09 09:13:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:13:52,855 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-12-09 09:13:52,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:13:52,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 09:13:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:13:52,862 INFO L225 Difference]: With dead ends: 36 [2018-12-09 09:13:52,862 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 09:13:52,863 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:13:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 09:13:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 09:13:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 09:13:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-09 09:13:52,884 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 7 [2018-12-09 09:13:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:13:52,885 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-09 09:13:52,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:13:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-09 09:13:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-09 09:13:52,885 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:13:52,885 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:13:52,885 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 09:13:52,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:13:52,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1124152874, now seen corresponding path program 1 times [2018-12-09 09:13:52,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:13:52,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:52,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:13:52,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:52,886 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:13:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:13:52,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:13:52,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:13:52,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 09:13:52,916 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:13:52,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 09:13:52,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 09:13:52,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:13:52,917 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 3 states. [2018-12-09 09:13:52,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:13:52,936 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-12-09 09:13:52,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 09:13:52,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-12-09 09:13:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:13:52,937 INFO L225 Difference]: With dead ends: 26 [2018-12-09 09:13:52,937 INFO L226 Difference]: Without dead ends: 26 [2018-12-09 09:13:52,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 09:13:52,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-09 09:13:52,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-09 09:13:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-09 09:13:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-09 09:13:52,940 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 7 [2018-12-09 09:13:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:13:52,941 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-09 09:13:52,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 09:13:52,941 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-09 09:13:52,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 09:13:52,941 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:13:52,941 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:13:52,941 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 09:13:52,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:13:52,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1478766587, now seen corresponding path program 1 times [2018-12-09 09:13:52,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:13:52,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:52,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:13:52,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:52,943 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:13:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:13:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:13:52,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:13:52,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:13:52,997 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:13:52,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:13:52,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:13:52,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:13:52,997 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2018-12-09 09:13:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:13:53,027 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-12-09 09:13:53,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 09:13:53,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-09 09:13:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:13:53,028 INFO L225 Difference]: With dead ends: 25 [2018-12-09 09:13:53,028 INFO L226 Difference]: Without dead ends: 25 [2018-12-09 09:13:53,028 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 09:13:53,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-09 09:13:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-12-09 09:13:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 09:13:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-09 09:13:53,030 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 15 [2018-12-09 09:13:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:13:53,030 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-09 09:13:53,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:13:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-09 09:13:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 09:13:53,030 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:13:53,030 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:13:53,030 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 09:13:53,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:13:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1402876132, now seen corresponding path program 1 times [2018-12-09 09:13:53,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:13:53,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:53,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:13:53,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:53,031 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:13:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:13:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:13:53,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:13:53,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 09:13:53,072 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:13:53,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 09:13:53,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 09:13:53,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 09:13:53,072 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 5 states. [2018-12-09 09:13:53,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:13:53,111 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-09 09:13:53,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 09:13:53,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-09 09:13:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:13:53,112 INFO L225 Difference]: With dead ends: 24 [2018-12-09 09:13:53,112 INFO L226 Difference]: Without dead ends: 24 [2018-12-09 09:13:53,113 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-09 09:13:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-09 09:13:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-09 09:13:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 09:13:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-09 09:13:53,114 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2018-12-09 09:13:53,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:13:53,114 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-09 09:13:53,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 09:13:53,115 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-09 09:13:53,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-09 09:13:53,115 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:13:53,115 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:13:53,115 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 09:13:53,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:13:53,116 INFO L82 PathProgramCache]: Analyzing trace with hash 539487207, now seen corresponding path program 1 times [2018-12-09 09:13:53,116 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:13:53,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:53,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:13:53,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:53,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:13:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:13:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:13:53,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:13:53,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 09:13:53,157 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 09:13:53,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:13:53,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:13:53,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:13:53,158 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 6 states. [2018-12-09 09:13:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:13:53,198 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-12-09 09:13:53,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:13:53,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-12-09 09:13:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:13:53,198 INFO L225 Difference]: With dead ends: 23 [2018-12-09 09:13:53,199 INFO L226 Difference]: Without dead ends: 23 [2018-12-09 09:13:53,199 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-12-09 09:13:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-09 09:13:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-09 09:13:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 09:13:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-09 09:13:53,200 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2018-12-09 09:13:53,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:13:53,200 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-09 09:13:53,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:13:53,201 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-09 09:13:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 09:13:53,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:13:53,201 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:13:53,201 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr8REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr18ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr17ASSERT_VIOLATIONMEMORY_FREE, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ASSERT_VIOLATIONMEMORY_FREE]=== [2018-12-09 09:13:53,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:13:53,201 INFO L82 PathProgramCache]: Analyzing trace with hash -455765690, now seen corresponding path program 1 times [2018-12-09 09:13:53,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 09:13:53,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:53,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:13:53,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:13:53,202 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 09:13:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:13:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:13:53,228 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 09:13:53,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:13:53 BoogieIcfgContainer [2018-12-09 09:13:53,243 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:13:53,243 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:13:53,243 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:13:53,243 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:13:53,244 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:13:52" (3/4) ... [2018-12-09 09:13:53,245 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 09:13:53,269 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_959a8be0-9126-4f07-8541-06146984cafd/bin-2019/utaipan/witness.graphml [2018-12-09 09:13:53,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:13:53,270 INFO L168 Benchmark]: Toolchain (without parser) took 1098.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.3 MB in the beginning and 975.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 85.2 MB. Max. memory is 11.5 GB. [2018-12-09 09:13:53,271 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:13:53,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:13:53,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.71 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:13:53,271 INFO L168 Benchmark]: Boogie Preprocessor took 18.52 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: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:13:53,272 INFO L168 Benchmark]: RCFGBuilder took 176.77 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-12-09 09:13:53,272 INFO L168 Benchmark]: TraceAbstraction took 603.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 975.7 MB in the end (delta: 90.8 MB). Peak memory consumption was 90.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:13:53,272 INFO L168 Benchmark]: Witness Printer took 26.15 ms. Allocated memory is still 1.1 GB. Free memory is still 975.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:13:53,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.71 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.52 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: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 176.77 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: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 603.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 975.7 MB in the end (delta: 90.8 MB). Peak memory consumption was 90.8 MB. Max. memory is 11.5 GB. * Witness Printer took 26.15 ms. Allocated memory is still 1.1 GB. Free memory is still 975.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 641]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L622-L629] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L630] data.p0 = malloc(37U) VAL [data={40:0}, malloc(37U)={43:0}] [L631] EXPR data.p0 VAL [data={40:0}, data.p0={43:0}, malloc(37U)={43:0}] [L631] void *ptr = data.p0; [L632] COND FALSE !(__VERIFIER_nondet_int()) [L635] data.str.p2 = 30 VAL [data={40:0}, malloc(37U)={43:0}, ptr={43:0}] [L637] EXPR data.str.p2 VAL [data={40:0}, data.str.p2=30, malloc(37U)={43:0}, ptr={43:0}] [L637] COND FALSE !(25 > data.str.p2) [L640] EXPR data.p0 VAL [data={40:0}, data.p0={43:0}, malloc(37U)={43:0}, ptr={43:0}] [L640] free(data.p0) VAL [data={40:0}, data.p0={43:0}, malloc(37U)={43:0}, ptr={43:0}] [L640] free(data.p0) [L641] free(ptr) VAL [data={40:0}, malloc(37U)={43:0}, ptr={43:0}] [L641] free(ptr) VAL [data={40:0}, malloc(37U)={43:0}, ptr={43:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 43 locations, 19 error locations. UNSAFE Result, 0.5s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 88 SDtfs, 111 SDslu, 94 SDs, 0 SdLazy, 104 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 2901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...