./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.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_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/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 4662583c594beb423b258ea562778b2db7ade5d4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 01:15:28,640 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 01:15:28,641 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 01:15:28,647 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 01:15:28,648 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 01:15:28,648 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 01:15:28,649 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 01:15:28,650 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 01:15:28,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 01:15:28,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 01:15:28,651 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 01:15:28,651 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 01:15:28,652 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 01:15:28,652 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 01:15:28,653 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 01:15:28,653 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 01:15:28,654 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 01:15:28,655 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 01:15:28,656 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 01:15:28,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 01:15:28,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 01:15:28,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 01:15:28,659 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 01:15:28,659 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 01:15:28,659 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 01:15:28,659 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 01:15:28,660 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 01:15:28,660 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 01:15:28,661 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 01:15:28,661 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 01:15:28,661 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 01:15:28,662 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 01:15:28,662 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 01:15:28,662 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 01:15:28,663 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 01:15:28,663 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 01:15:28,663 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 01:15:28,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 01:15:28,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 01:15:28,671 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 01:15:28,671 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 01:15:28,671 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 01:15:28,672 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 01:15:28,672 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 01:15:28,672 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 01:15:28,672 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 01:15:28,672 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 01:15:28,672 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 01:15:28,672 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 01:15:28,673 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 01:15:28,673 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 01:15:28,673 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 01:15:28,673 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 01:15:28,673 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 01:15:28,673 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 01:15:28,674 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 01:15:28,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 01:15:28,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 01:15:28,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 01:15:28,675 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 01:15:28,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 01:15:28,675 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 01:15:28,675 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 01:15:28,675 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 01:15:28,676 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 01:15:28,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 01:15:28,676 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_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/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 -> 4662583c594beb423b258ea562778b2db7ade5d4 [2018-12-03 01:15:28,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 01:15:28,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 01:15:28,705 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 01:15:28,706 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 01:15:28,707 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 01:15:28,707 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-12-03 01:15:28,749 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/data/0f0602a5c/640d7388fbc24cf8a7169565a68af917/FLAG751ca67b0 [2018-12-03 01:15:29,203 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 01:15:29,203 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/sv-benchmarks/c/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-12-03 01:15:29,211 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/data/0f0602a5c/640d7388fbc24cf8a7169565a68af917/FLAG751ca67b0 [2018-12-03 01:15:29,219 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/data/0f0602a5c/640d7388fbc24cf8a7169565a68af917 [2018-12-03 01:15:29,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 01:15:29,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 01:15:29,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 01:15:29,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 01:15:29,224 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 01:15:29,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33416e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29, skipping insertion in model container [2018-12-03 01:15:29,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 01:15:29,253 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 01:15:29,473 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 01:15:29,485 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 01:15:29,529 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 01:15:29,567 INFO L195 MainTranslator]: Completed translation [2018-12-03 01:15:29,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29 WrapperNode [2018-12-03 01:15:29,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 01:15:29,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 01:15:29,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 01:15:29,568 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 01:15:29,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 01:15:29,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 01:15:29,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 01:15:29,589 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 01:15:29,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... [2018-12-03 01:15:29,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 01:15:29,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 01:15:29,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 01:15:29,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 01:15:29,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 01:15:29,635 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-12-03 01:15:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-12-03 01:15:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 01:15:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 01:15:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure free_8 [2018-12-03 01:15:29,636 INFO L138 BoogieDeclarations]: Found implementation of procedure free_8 [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-03 01:15:29,636 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2018-12-03 01:15:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2018-12-03 01:15:29,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 01:15:29,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 01:15:29,746 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 01:15:29,747 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-03 01:15:29,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:15:29 BoogieIcfgContainer [2018-12-03 01:15:29,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 01:15:29,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 01:15:29,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 01:15:29,749 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 01:15:29,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 01:15:29" (1/3) ... [2018-12-03 01:15:29,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f7ab40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 01:15:29, skipping insertion in model container [2018-12-03 01:15:29,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 01:15:29" (2/3) ... [2018-12-03 01:15:29,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f7ab40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 01:15:29, skipping insertion in model container [2018-12-03 01:15:29,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:15:29" (3/3) ... [2018-12-03 01:15:29,752 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test8_true-valid-memsafety_true-termination.i [2018-12-03 01:15:29,758 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 01:15:29,762 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 01:15:29,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 01:15:29,787 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 01:15:29,787 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 01:15:29,787 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 01:15:29,788 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 01:15:29,788 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 01:15:29,788 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 01:15:29,788 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 01:15:29,788 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 01:15:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-03 01:15:29,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-03 01:15:29,802 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:15:29,803 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:15:29,804 INFO L423 AbstractCegarLoop]: === Iteration 1 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 01:15:29,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:15:29,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1922122706, now seen corresponding path program 1 times [2018-12-03 01:15:29,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:15:29,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:29,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:15:29,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:29,843 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:15:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:15:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:15:29,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:15:29,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 01:15:29,931 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:15:29,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 01:15:29,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 01:15:29,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 01:15:29,943 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-12-03 01:15:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:15:29,987 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-03 01:15:29,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 01:15:29,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-12-03 01:15:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:15:29,996 INFO L225 Difference]: With dead ends: 30 [2018-12-03 01:15:29,997 INFO L226 Difference]: Without dead ends: 27 [2018-12-03 01:15:29,998 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-03 01:15:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-03 01:15:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-03 01:15:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-03 01:15:30,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-12-03 01:15:30,021 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2018-12-03 01:15:30,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:15:30,021 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-12-03 01:15:30,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 01:15:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-12-03 01:15:30,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 01:15:30,021 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:15:30,021 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:15:30,022 INFO L423 AbstractCegarLoop]: === Iteration 2 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 01:15:30,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:15:30,022 INFO L82 PathProgramCache]: Analyzing trace with hash -543738222, now seen corresponding path program 1 times [2018-12-03 01:15:30,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:15:30,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:15:30,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,023 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:15:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:15:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:15:30,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:15:30,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-03 01:15:30,089 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:15:30,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 01:15:30,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 01:15:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 01:15:30,090 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2018-12-03 01:15:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:15:30,121 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-12-03 01:15:30,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 01:15:30,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-03 01:15:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:15:30,123 INFO L225 Difference]: With dead ends: 39 [2018-12-03 01:15:30,123 INFO L226 Difference]: Without dead ends: 39 [2018-12-03 01:15:30,124 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 01:15:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-03 01:15:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-12-03 01:15:30,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-03 01:15:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-12-03 01:15:30,129 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 19 [2018-12-03 01:15:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:15:30,129 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-12-03 01:15:30,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 01:15:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-03 01:15:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-03 01:15:30,130 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:15:30,131 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:15:30,131 INFO L423 AbstractCegarLoop]: === Iteration 3 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 01:15:30,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:15:30,131 INFO L82 PathProgramCache]: Analyzing trace with hash -740251727, now seen corresponding path program 1 times [2018-12-03 01:15:30,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:15:30,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:15:30,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,132 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:15:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:15:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:15:30,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:15:30,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-03 01:15:30,167 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:15:30,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 01:15:30,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 01:15:30,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-03 01:15:30,167 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 5 states. [2018-12-03 01:15:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:15:30,195 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-12-03 01:15:30,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 01:15:30,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-03 01:15:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:15:30,197 INFO L225 Difference]: With dead ends: 38 [2018-12-03 01:15:30,197 INFO L226 Difference]: Without dead ends: 38 [2018-12-03 01:15:30,197 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-03 01:15:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-03 01:15:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-12-03 01:15:30,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-03 01:15:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-03 01:15:30,200 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 19 [2018-12-03 01:15:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:15:30,200 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-03 01:15:30,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 01:15:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-03 01:15:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 01:15:30,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:15:30,201 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:15:30,201 INFO L423 AbstractCegarLoop]: === Iteration 4 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 01:15:30,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:15:30,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2032292275, now seen corresponding path program 1 times [2018-12-03 01:15:30,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:15:30,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:15:30,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,202 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:15:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:15:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:15:30,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:15:30,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-03 01:15:30,242 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:15:30,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 01:15:30,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 01:15:30,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-03 01:15:30,242 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2018-12-03 01:15:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:15:30,277 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-12-03 01:15:30,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-03 01:15:30,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-12-03 01:15:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:15:30,278 INFO L225 Difference]: With dead ends: 36 [2018-12-03 01:15:30,278 INFO L226 Difference]: Without dead ends: 36 [2018-12-03 01:15:30,278 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-03 01:15:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-03 01:15:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-12-03 01:15:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-03 01:15:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-12-03 01:15:30,282 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-12-03 01:15:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:15:30,283 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-12-03 01:15:30,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 01:15:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-12-03 01:15:30,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-03 01:15:30,283 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:15:30,283 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:15:30,284 INFO L423 AbstractCegarLoop]: === Iteration 5 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 01:15:30,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:15:30,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1757116396, now seen corresponding path program 1 times [2018-12-03 01:15:30,284 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:15:30,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:15:30,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,286 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:15:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:15:30,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:15:30,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:15:30,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 01:15:30,308 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:15:30,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 01:15:30,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 01:15:30,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 01:15:30,308 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 3 states. [2018-12-03 01:15:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:15:30,322 INFO L93 Difference]: Finished difference Result 39 states and 38 transitions. [2018-12-03 01:15:30,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 01:15:30,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-12-03 01:15:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:15:30,323 INFO L225 Difference]: With dead ends: 39 [2018-12-03 01:15:30,323 INFO L226 Difference]: Without dead ends: 26 [2018-12-03 01:15:30,323 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 01:15:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-03 01:15:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-03 01:15:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-03 01:15:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2018-12-03 01:15:30,325 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 23 [2018-12-03 01:15:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:15:30,325 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2018-12-03 01:15:30,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 01:15:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2018-12-03 01:15:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-03 01:15:30,326 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 01:15:30,326 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 01:15:30,326 INFO L423 AbstractCegarLoop]: === Iteration 6 === [free_8Err0ASSERT_VIOLATIONMEMORY_FREE, free_8Err1ASSERT_VIOLATIONMEMORY_FREE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 01:15:30,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 01:15:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1769520759, now seen corresponding path program 1 times [2018-12-03 01:15:30,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 01:15:30,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 01:15:30,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 01:15:30,327 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 01:15:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 01:15:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 01:15:30,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 01:15:30,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-03 01:15:30,392 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 01:15:30,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-03 01:15:30,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-03 01:15:30,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-03 01:15:30,393 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 8 states. [2018-12-03 01:15:30,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 01:15:30,443 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2018-12-03 01:15:30,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-03 01:15:30,444 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-03 01:15:30,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 01:15:30,444 INFO L225 Difference]: With dead ends: 25 [2018-12-03 01:15:30,444 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 01:15:30,445 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-03 01:15:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 01:15:30,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 01:15:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 01:15:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 01:15:30,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-12-03 01:15:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 01:15:30,446 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 01:15:30,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-03 01:15:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 01:15:30,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 01:15:30,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 01:15:30 BoogieIcfgContainer [2018-12-03 01:15:30,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 01:15:30,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 01:15:30,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 01:15:30,451 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 01:15:30,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 01:15:29" (3/4) ... [2018-12-03 01:15:30,454 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-03 01:15:30,459 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure free_8 [2018-12-03 01:15:30,459 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2018-12-03 01:15:30,459 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-03 01:15:30,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure alloc_8 [2018-12-03 01:15:30,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-03 01:15:30,460 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure entry_point [2018-12-03 01:15:30,463 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-12-03 01:15:30,463 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-03 01:15:30,463 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-03 01:15:30,493 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_669a4d59-9bdf-4618-9aa1-1e178b9b12d4/bin-2019/utaipan/witness.graphml [2018-12-03 01:15:30,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 01:15:30,494 INFO L168 Benchmark]: Toolchain (without parser) took 1272.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 948.1 MB in the beginning and 942.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 108.7 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,495 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 01:15:30,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.10 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,496 INFO L168 Benchmark]: Boogie Preprocessor took 13.98 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,496 INFO L168 Benchmark]: RCFGBuilder took 144.03 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,496 INFO L168 Benchmark]: TraceAbstraction took 703.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 945.4 MB in the end (delta: 113.9 MB). Peak memory consumption was 113.9 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,497 INFO L168 Benchmark]: Witness Printer took 42.41 ms. Allocated memory is still 1.1 GB. Free memory was 945.4 MB in the beginning and 942.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 01:15:30,499 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.52 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -133.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.10 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.98 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 144.03 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 703.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 945.4 MB in the end (delta: 113.9 MB). Peak memory consumption was 113.9 MB. Max. memory is 11.5 GB. * Witness Printer took 42.41 ms. Allocated memory is still 1.1 GB. Free memory was 945.4 MB in the beginning and 942.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1441]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1441]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1450]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 31 locations, 3 error locations. SAFE Result, 0.6s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 155 SDtfs, 72 SDslu, 282 SDs, 0 SdLazy, 169 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=2, 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, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 8649 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...