./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/stroeder1-alloca_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_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/stroeder1-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/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 2b0e0efff2abe6f8e9e2779973c44bf85d460f52 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:03:22,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:03:22,454 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:03:22,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:03:22,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:03:22,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:03:22,461 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:03:22,462 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:03:22,463 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:03:22,463 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:03:22,464 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:03:22,464 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:03:22,464 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:03:22,465 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:03:22,465 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:03:22,466 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:03:22,466 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:03:22,467 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:03:22,468 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:03:22,469 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:03:22,469 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:03:22,470 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:03:22,471 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:03:22,471 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:03:22,471 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:03:22,471 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:03:22,472 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:03:22,472 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:03:22,473 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:03:22,473 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:03:22,473 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:03:22,474 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:03:22,474 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:03:22,474 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:03:22,474 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:03:22,475 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:03:22,475 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 01:03:22,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:03:22,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:03:22,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:03:22,482 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:03:22,483 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:03:22,483 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:03:22,484 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:03:22,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:03:22,484 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:03:22,485 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:03:22,485 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:03:22,485 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:03:22,486 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:03:22,486 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:03:22,486 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:03:22,486 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_b30cb384-574b-4dc4-bf92-4de7bbc200f1/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 -> 2b0e0efff2abe6f8e9e2779973c44bf85d460f52 [2018-12-09 01:03:22,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:03:22,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:03:22,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:03:22,512 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:03:22,512 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:03:22,512 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/stroeder1-alloca_true-valid-memsafety_true-termination.i [2018-12-09 01:03:22,549 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/data/8789eb6cc/82276d7bab6444daaa66151256c44d3c/FLAGd844559fe [2018-12-09 01:03:22,997 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:03:22,997 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/sv-benchmarks/c/array-memsafety/stroeder1-alloca_true-valid-memsafety_true-termination.i [2018-12-09 01:03:23,003 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/data/8789eb6cc/82276d7bab6444daaa66151256c44d3c/FLAGd844559fe [2018-12-09 01:03:23,011 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/data/8789eb6cc/82276d7bab6444daaa66151256c44d3c [2018-12-09 01:03:23,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:03:23,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:03:23,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:03:23,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:03:23,016 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:03:23,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68649384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23, skipping insertion in model container [2018-12-09 01:03:23,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:03:23,040 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:03:23,176 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:03:23,182 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:03:23,241 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:03:23,267 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:03:23,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23 WrapperNode [2018-12-09 01:03:23,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:03:23,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:03:23,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:03:23,268 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:03:23,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:03:23,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:03:23,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:03:23,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:03:23,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... [2018-12-09 01:03:23,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:03:23,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:03:23,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:03:23,304 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:03:23,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:03:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:03:23,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 01:03:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:03:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:03:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:03:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:03:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure sumOfThirdBytes [2018-12-09 01:03:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sumOfThirdBytes [2018-12-09 01:03:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:03:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:03:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:03:23,451 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:03:23,452 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:03:23,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:03:23 BoogieIcfgContainer [2018-12-09 01:03:23,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:03:23,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:03:23,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:03:23,455 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:03:23,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:03:23" (1/3) ... [2018-12-09 01:03:23,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f1f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:03:23, skipping insertion in model container [2018-12-09 01:03:23,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:03:23" (2/3) ... [2018-12-09 01:03:23,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c8f1f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:03:23, skipping insertion in model container [2018-12-09 01:03:23,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:03:23" (3/3) ... [2018-12-09 01:03:23,457 INFO L112 eAbstractionObserver]: Analyzing ICFG stroeder1-alloca_true-valid-memsafety_true-termination.i [2018-12-09 01:03:23,463 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:03:23,468 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-09 01:03:23,478 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-09 01:03:23,493 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:03:23,493 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 01:03:23,493 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:03:23,493 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:03:23,493 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:03:23,493 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:03:23,493 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:03:23,494 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:03:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-12-09 01:03:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:03:23,507 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:03:23,508 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:03:23,509 INFO L423 AbstractCegarLoop]: === Iteration 1 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:03:23,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash 822658386, now seen corresponding path program 1 times [2018-12-09 01:03:23,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:03:23,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:23,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,546 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:03:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:23,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:03:23,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:03:23,635 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:03:23,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:03:23,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:03:23,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:03:23,647 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2018-12-09 01:03:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:03:23,723 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-12-09 01:03:23,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:03:23,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-09 01:03:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:03:23,730 INFO L225 Difference]: With dead ends: 28 [2018-12-09 01:03:23,730 INFO L226 Difference]: Without dead ends: 25 [2018-12-09 01:03:23,732 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:03:23,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-09 01:03:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-12-09 01:03:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 01:03:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 01:03:23,753 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12 [2018-12-09 01:03:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:03:23,754 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 01:03:23,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:03:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 01:03:23,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:03:23,754 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:03:23,754 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:03:23,754 INFO L423 AbstractCegarLoop]: === Iteration 2 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:03:23,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash 822658387, now seen corresponding path program 1 times [2018-12-09 01:03:23,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:03:23,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:23,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,756 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:03:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:23,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:03:23,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:03:23,819 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:03:23,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:03:23,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:03:23,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:03:23,820 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2018-12-09 01:03:23,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:03:23,880 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-12-09 01:03:23,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:03:23,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-09 01:03:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:03:23,881 INFO L225 Difference]: With dead ends: 32 [2018-12-09 01:03:23,881 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 01:03:23,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:03:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 01:03:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2018-12-09 01:03:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 01:03:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-12-09 01:03:23,885 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2018-12-09 01:03:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:03:23,885 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-12-09 01:03:23,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:03:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-12-09 01:03:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:03:23,886 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:03:23,886 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:03:23,886 INFO L423 AbstractCegarLoop]: === Iteration 3 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:03:23,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1186137299, now seen corresponding path program 1 times [2018-12-09 01:03:23,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:03:23,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,888 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:03:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:23,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:03:23,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:03:23,930 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:03:23,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:03:23,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:03:23,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:03:23,931 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 5 states. [2018-12-09 01:03:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:03:23,949 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-12-09 01:03:23,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:03:23,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-09 01:03:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:03:23,949 INFO L225 Difference]: With dead ends: 28 [2018-12-09 01:03:23,949 INFO L226 Difference]: Without dead ends: 25 [2018-12-09 01:03:23,950 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:03:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-09 01:03:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-12-09 01:03:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-09 01:03:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-09 01:03:23,952 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2018-12-09 01:03:23,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:03:23,952 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-09 01:03:23,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:03:23,952 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-09 01:03:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:03:23,952 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:03:23,952 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:03:23,953 INFO L423 AbstractCegarLoop]: === Iteration 4 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:03:23,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:23,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1234849622, now seen corresponding path program 1 times [2018-12-09 01:03:23,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:03:23,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:23,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:23,954 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:03:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:24,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:03:24,014 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:03:24,015 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-09 01:03:24,016 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [11], [13], [14], [16], [25], [28], [32], [37], [38], [39], [41] [2018-12-09 01:03:24,037 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:03:24,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:03:24,144 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:03:24,145 INFO L272 AbstractInterpreter]: Visited 15 different actions 16 times. Merged at 1 different actions 1 times. Never widened. Performed 106 root evaluator evaluations with a maximum evaluation depth of 4. Performed 106 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 22 variables. [2018-12-09 01:03:24,150 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:24,150 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:03:24,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:03:24,151 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:03:24,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:24,159 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:03:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:24,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:03:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:24,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:03:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:24,265 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-09 01:03:24,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [9] total 14 [2018-12-09 01:03:24,265 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:03:24,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:03:24,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:03:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-12-09 01:03:24,266 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 6 states. [2018-12-09 01:03:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:03:24,299 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-12-09 01:03:24,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:03:24,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-12-09 01:03:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:03:24,300 INFO L225 Difference]: With dead ends: 37 [2018-12-09 01:03:24,300 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 01:03:24,301 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-12-09 01:03:24,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 01:03:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-12-09 01:03:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 01:03:24,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-12-09 01:03:24,303 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 16 [2018-12-09 01:03:24,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:03:24,304 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-12-09 01:03:24,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:03:24,304 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-12-09 01:03:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:03:24,304 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:03:24,304 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:03:24,305 INFO L423 AbstractCegarLoop]: === Iteration 5 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:03:24,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash 841822612, now seen corresponding path program 1 times [2018-12-09 01:03:24,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:03:24,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:24,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:24,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:24,306 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:03:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:24,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:24,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:03:24,386 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:03:24,386 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-09 01:03:24,386 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [11], [13], [14], [16], [25], [30], [32], [37], [38], [39], [41] [2018-12-09 01:03:24,387 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:03:24,387 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:03:24,426 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:03:24,426 INFO L272 AbstractInterpreter]: Visited 15 different actions 25 times. Merged at 5 different actions 10 times. Never widened. Performed 167 root evaluator evaluations with a maximum evaluation depth of 4. Performed 167 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 22 variables. [2018-12-09 01:03:24,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:24,427 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:03:24,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:03:24,428 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:03:24,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:24,433 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:03:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:24,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:03:24,459 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-09 01:03:24,460 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:03:24,463 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:03:24,463 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-09 01:03:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:24,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:03:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:03:24,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 01:03:24,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 17 [2018-12-09 01:03:24,672 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:03:24,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 01:03:24,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 01:03:24,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-12-09 01:03:24,673 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2018-12-09 01:03:24,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:03:24,808 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-12-09 01:03:24,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:03:24,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2018-12-09 01:03:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:03:24,809 INFO L225 Difference]: With dead ends: 39 [2018-12-09 01:03:24,809 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 01:03:24,809 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2018-12-09 01:03:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 01:03:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-12-09 01:03:24,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 01:03:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-12-09 01:03:24,812 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 16 [2018-12-09 01:03:24,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:03:24,812 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-12-09 01:03:24,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 01:03:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-12-09 01:03:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 01:03:24,813 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:03:24,813 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] [2018-12-09 01:03:24,813 INFO L423 AbstractCegarLoop]: === Iteration 6 === [sumOfThirdBytesErr1REQUIRES_VIOLATION, sumOfThirdBytesErr0REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:03:24,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:03:24,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1201263958, now seen corresponding path program 1 times [2018-12-09 01:03:24,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:03:24,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:24,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:03:24,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:03:24,814 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:03:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:03:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:03:24,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:03:24,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:03:24,852 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:03:24,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:03:24,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:03:24,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:03:24,853 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 4 states. [2018-12-09 01:03:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:03:24,876 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-12-09 01:03:24,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:03:24,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-12-09 01:03:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:03:24,876 INFO L225 Difference]: With dead ends: 31 [2018-12-09 01:03:24,876 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:03:24,876 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:03:24,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:03:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:03:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:03:24,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:03:24,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-12-09 01:03:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:03:24,877 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:03:24,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:03:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:03:24,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:03:24,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:03:24 BoogieIcfgContainer [2018-12-09 01:03:24,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:03:24,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:03:24,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:03:24,880 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:03:24,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:03:23" (3/4) ... [2018-12-09 01:03:24,882 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:03:24,886 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:03:24,886 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sumOfThirdBytes [2018-12-09 01:03:24,886 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:03:24,888 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-12-09 01:03:24,888 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-09 01:03:24,888 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 01:03:24,912 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b30cb384-574b-4dc4-bf92-4de7bbc200f1/bin-2019/utaipan/witness.graphml [2018-12-09 01:03:24,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:03:24,912 INFO L168 Benchmark]: Toolchain (without parser) took 1899.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -146.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:03:24,913 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:03:24,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:03:24,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:03:24,914 INFO L168 Benchmark]: Boogie Preprocessor took 14.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:03:24,914 INFO L168 Benchmark]: RCFGBuilder took 148.20 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:03:24,914 INFO L168 Benchmark]: TraceAbstraction took 1427.47 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: -20.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:03:24,915 INFO L168 Benchmark]: Witness Printer took 31.95 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 01:03:24,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -152.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 148.20 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1427.47 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: -20.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 31.95 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: 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 4 procedures, 25 locations, 3 error locations. SAFE Result, 1.3s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 109 SDtfs, 135 SDslu, 270 SDs, 0 SdLazy, 199 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 146 ConstructedInterpolants, 13 QuantifiedInterpolants, 13244 SizeOfPredicates, 14 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 8/13 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...