./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes4_true-valid-memsafety.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes4_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/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 87dcbb1d4539995e5aba39e6053775ca0fac811e ...................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 04:46:37,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:46:37,591 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:46:37,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:46:37,601 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:46:37,602 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:46:37,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:46:37,604 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:46:37,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:46:37,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:46:37,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:46:37,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:46:37,608 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:46:37,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:46:37,609 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:46:37,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:46:37,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:46:37,612 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:46:37,614 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:46:37,615 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:46:37,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:46:37,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:46:37,619 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:46:37,619 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:46:37,619 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:46:37,620 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:46:37,621 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:46:37,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:46:37,622 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:46:37,623 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:46:37,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:46:37,624 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:46:37,624 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:46:37,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:46:37,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:46:37,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:46:37,627 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-10-27 04:46:37,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:46:37,639 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:46:37,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 04:46:37,639 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 04:46:37,640 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 04:46:37,640 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 04:46:37,640 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 04:46:37,640 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 04:46:37,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 04:46:37,641 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 04:46:37,641 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 04:46:37,641 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:46:37,641 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:46:37,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:46:37,642 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:46:37,643 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:46:37,644 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:46:37,644 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:46:37,644 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:46:37,644 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:46:37,644 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:46:37,645 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:46:37,645 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:46:37,645 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:46:37,645 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:46:37,646 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:46:37,646 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:46:37,646 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:46:37,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:46:37,646 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:46:37,647 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:46:37,647 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 04:46:37,647 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:46:37,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 04:46:37,647 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_6d33e38f-daee-4a37-98e2-5004bcf15f13/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 -> 87dcbb1d4539995e5aba39e6053775ca0fac811e [2018-10-27 04:46:37,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:46:37,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:46:37,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:46:37,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:46:37,687 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:46:37,687 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/scopes4_true-valid-memsafety.c [2018-10-27 04:46:37,734 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/data/eda1ed069/a0c9e22f41064c3abe6a3b4055c0d0d8/FLAGc6f905ad0 [2018-10-27 04:46:38,098 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:46:38,099 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/sv-benchmarks/c/memsafety-ext3/scopes4_true-valid-memsafety.c [2018-10-27 04:46:38,104 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/data/eda1ed069/a0c9e22f41064c3abe6a3b4055c0d0d8/FLAGc6f905ad0 [2018-10-27 04:46:38,113 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/data/eda1ed069/a0c9e22f41064c3abe6a3b4055c0d0d8 [2018-10-27 04:46:38,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:46:38,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 04:46:38,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:46:38,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:46:38,122 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:46:38,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3887c026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38, skipping insertion in model container [2018-10-27 04:46:38,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:46:38,148 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:46:38,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:46:38,322 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:46:38,335 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:46:38,429 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:46:38,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38 WrapperNode [2018-10-27 04:46:38,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:46:38,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 04:46:38,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 04:46:38,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 04:46:38,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 04:46:38,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:46:38,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:46:38,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:46:38,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... [2018-10-27 04:46:38,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:46:38,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:46:38,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:46:38,689 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:46:38,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/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 [2018-10-27 04:46:38,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:46:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:46:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-10-27 04:46:38,948 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-10-27 04:46:38,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:46:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:46:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:46:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:46:38,949 INFO L130 BoogieDeclarations]: Found specification of procedure foo2 [2018-10-27 04:46:38,949 INFO L138 BoogieDeclarations]: Found implementation of procedure foo2 [2018-10-27 04:46:59,488 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:46:59,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:46:59 BoogieIcfgContainer [2018-10-27 04:46:59,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:46:59,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:46:59,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:46:59,493 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:46:59,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:46:38" (1/3) ... [2018-10-27 04:46:59,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abf443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:46:59, skipping insertion in model container [2018-10-27 04:46:59,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:46:38" (2/3) ... [2018-10-27 04:46:59,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7abf443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:46:59, skipping insertion in model container [2018-10-27 04:46:59,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:46:59" (3/3) ... [2018-10-27 04:46:59,496 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes4_true-valid-memsafety.c [2018-10-27 04:46:59,511 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:46:59,523 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-10-27 04:46:59,552 INFO L257 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2018-10-27 04:46:59,582 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:46:59,582 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:46:59,583 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:46:59,583 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:46:59,583 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:46:59,584 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:46:59,584 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:46:59,584 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:46:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-27 04:46:59,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 04:46:59,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:46:59,605 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:46:59,607 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, foo2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, foo2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-27 04:46:59,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:46:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1002352148, now seen corresponding path program 1 times [2018-10-27 04:46:59,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 04:46:59,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:46:59,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:46:59,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:46:59,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 04:46:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:47:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:47:00,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:47:00,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:47:00,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 04:47:00,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:47:00,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:47:00,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:47:00,576 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2018-10-27 04:47:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:47:02,748 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2018-10-27 04:47:02,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:47:02,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-10-27 04:47:02,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:47:02,756 INFO L225 Difference]: With dead ends: 25 [2018-10-27 04:47:02,756 INFO L226 Difference]: Without dead ends: 21 [2018-10-27 04:47:02,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:47:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-27 04:47:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 04:47:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 04:47:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-10-27 04:47:02,789 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2018-10-27 04:47:02,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:47:02,789 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-10-27 04:47:02,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:47:02,790 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-10-27 04:47:02,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 04:47:02,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:47:02,791 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:47:02,791 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, foo2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, foo2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-27 04:47:02,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:47:02,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1008145566, now seen corresponding path program 1 times [2018-10-27 04:47:02,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 04:47:02,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:02,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:47:02,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:02,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 04:47:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:47:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:47:03,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:47:03,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:47:03,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 04:47:03,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 04:47:03,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 04:47:03,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 04:47:03,543 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 4 states. [2018-10-27 04:47:05,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:47:05,695 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2018-10-27 04:47:05,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:47:05,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-27 04:47:05,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:47:05,697 INFO L225 Difference]: With dead ends: 20 [2018-10-27 04:47:05,697 INFO L226 Difference]: Without dead ends: 20 [2018-10-27 04:47:05,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:47:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-27 04:47:05,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-27 04:47:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-27 04:47:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2018-10-27 04:47:05,701 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 10 [2018-10-27 04:47:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:47:05,701 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2018-10-27 04:47:05,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 04:47:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2018-10-27 04:47:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 04:47:05,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:47:05,702 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:47:05,702 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, foo2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, foo2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-27 04:47:05,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:47:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash -424402148, now seen corresponding path program 1 times [2018-10-27 04:47:05,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 04:47:05,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:05,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:47:05,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:05,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 04:47:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:47:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:47:06,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:47:06,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-27 04:47:06,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 04:47:06,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 04:47:06,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 04:47:06,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-27 04:47:06,429 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 9 states. [2018-10-27 04:47:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:47:18,608 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-10-27 04:47:18,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 04:47:18,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-10-27 04:47:18,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:47:18,611 INFO L225 Difference]: With dead ends: 19 [2018-10-27 04:47:18,611 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 04:47:18,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-10-27 04:47:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 04:47:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 04:47:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 04:47:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2018-10-27 04:47:18,614 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2018-10-27 04:47:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:47:18,615 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2018-10-27 04:47:18,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 04:47:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2018-10-27 04:47:18,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:47:18,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:47:18,616 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:47:18,616 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, foo2Err0ASSERT_VIOLATIONMEMORY_DEREFERENCE, foo2Err1ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-27 04:47:18,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:47:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash -271564657, now seen corresponding path program 1 times [2018-10-27 04:47:18,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 04:47:18,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:18,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:47:18,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:18,618 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 04:47:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:47:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:47:19,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:47:19,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 04:47:19,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 04:47:19,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 04:47:19,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 04:47:19,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-27 04:47:19,125 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 8 states. [2018-10-27 04:47:29,335 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-10-27 04:47:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:47:29,628 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2018-10-27 04:47:29,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 04:47:29,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-10-27 04:47:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:47:29,629 INFO L225 Difference]: With dead ends: 18 [2018-10-27 04:47:29,629 INFO L226 Difference]: Without dead ends: 0 [2018-10-27 04:47:29,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-27 04:47:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-27 04:47:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-27 04:47:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-27 04:47:29,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 04:47:29,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-10-27 04:47:29,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:47:29,631 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 04:47:29,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 04:47:29,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-27 04:47:29,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-27 04:47:29,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:47:29 BoogieIcfgContainer [2018-10-27 04:47:29,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:47:29,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:47:29,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:47:29,637 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:47:29,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:46:59" (3/4) ... [2018-10-27 04:47:29,641 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-27 04:47:29,647 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-27 04:47:29,648 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2018-10-27 04:47:29,648 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-27 04:47:29,648 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure foo2 [2018-10-27 04:47:29,687 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2076 nodes and edges [2018-10-27 04:47:29,691 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1037 nodes and edges [2018-10-27 04:47:29,695 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1028 nodes and edges [2018-10-27 04:47:29,697 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-27 04:47:29,942 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6d33e38f-daee-4a37-98e2-5004bcf15f13/bin-2019/utaipan/witness.graphml [2018-10-27 04:47:29,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:47:29,943 INFO L168 Benchmark]: Toolchain (without parser) took 51827.05 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 884.5 MB). Free memory was 960.7 MB in the beginning and 1.8 GB in the end (delta: -855.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,943 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:47:29,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.23 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 938.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 151.63 ms. Allocated memory is still 1.0 GB. Free memory was 938.2 MB in the beginning and 916.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,946 INFO L168 Benchmark]: Boogie Preprocessor took 105.86 ms. Allocated memory is still 1.0 GB. Free memory was 916.7 MB in the beginning and 900.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,946 INFO L168 Benchmark]: RCFGBuilder took 20800.00 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 885.0 MB). Free memory was 900.6 MB in the beginning and 1.4 GB in the end (delta: -545.1 MB). Peak memory consumption was 951.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,948 INFO L168 Benchmark]: TraceAbstraction took 30146.89 ms. Allocated memory is still 1.9 GB. Free memory was 1.4 GB in the beginning and 861.1 MB in the end (delta: 584.6 MB). Peak memory consumption was 584.6 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,948 INFO L168 Benchmark]: Witness Printer took 305.45 ms. Allocated memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -524.3 kB). Free memory was 861.1 MB in the beginning and 1.8 GB in the end (delta: -955.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:29,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 312.23 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 938.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 151.63 ms. Allocated memory is still 1.0 GB. Free memory was 938.2 MB in the beginning and 916.7 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 105.86 ms. Allocated memory is still 1.0 GB. Free memory was 916.7 MB in the beginning and 900.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 20800.00 ms. Allocated memory was 1.0 GB in the beginning and 1.9 GB in the end (delta: 885.0 MB). Free memory was 900.6 MB in the beginning and 1.4 GB in the end (delta: -545.1 MB). Peak memory consumption was 951.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 30146.89 ms. Allocated memory is still 1.9 GB. Free memory was 1.4 GB in the beginning and 861.1 MB in the end (delta: 584.6 MB). Peak memory consumption was 584.6 MB. Max. memory is 11.5 GB. * Witness Printer took 305.45 ms. Allocated memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -524.3 kB). Free memory was 861.1 MB in the beginning and 1.8 GB in the end (delta: -955.3 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 5 error locations. SAFE Result, 30.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 27.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 48 SDslu, 92 SDs, 0 SdLazy, 127 SolverSat, 2 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 26.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...