./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63f7c8c7ba82d0f06d2a9c7ce1330ebd768db6f2 ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:38:01,398 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:38:01,399 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:38:01,407 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:38:01,407 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:38:01,408 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:38:01,409 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:38:01,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:38:01,412 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:38:01,413 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:38:01,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:38:01,414 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:38:01,415 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:38:01,415 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:38:01,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:38:01,417 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:38:01,418 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:38:01,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:38:01,421 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:38:01,422 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:38:01,423 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:38:01,424 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:38:01,426 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:38:01,426 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:38:01,426 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:38:01,427 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:38:01,428 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:38:01,428 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:38:01,429 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:38:01,430 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:38:01,430 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:38:01,431 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:38:01,431 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:38:01,431 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:38:01,432 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:38:01,432 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:38:01,433 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 23:38:01,443 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:38:01,444 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:38:01,444 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:38:01,444 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:38:01,445 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 23:38:01,445 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 23:38:01,445 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 23:38:01,445 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 23:38:01,445 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 23:38:01,445 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 23:38:01,446 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 23:38:01,446 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 23:38:01,446 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 23:38:01,447 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:38:01,447 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:38:01,447 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:38:01,447 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:38:01,447 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:38:01,447 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:38:01,448 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:38:01,448 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:38:01,448 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:38:01,448 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:38:01,448 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:38:01,448 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:38:01,449 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:38:01,449 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:38:01,449 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:38:01,449 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:38:01,449 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:38:01,450 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:38:01,450 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:38:01,450 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:38:01,450 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 23:38:01,450 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:38:01,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:38:01,450 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 23:38:01,451 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_927dfd87-52db-4fa3-9c72-cc145fdc7420/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 ! call(__VERIFIER_error())) ) 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 -> 63f7c8c7ba82d0f06d2a9c7ce1330ebd768db6f2 [2018-11-22 23:38:01,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:38:01,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:38:01,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:38:01,488 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:38:01,488 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:38:01,489 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-11-22 23:38:01,537 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/data/ca27567ed/03ff2e5cfed5465d84b677ac113fc625/FLAG783e98c23 [2018-11-22 23:38:01,888 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:38:01,888 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-11-22 23:38:01,895 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/data/ca27567ed/03ff2e5cfed5465d84b677ac113fc625/FLAG783e98c23 [2018-11-22 23:38:01,910 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/data/ca27567ed/03ff2e5cfed5465d84b677ac113fc625 [2018-11-22 23:38:01,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:38:01,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:38:01,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:38:01,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:38:01,920 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:38:01,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:38:01" (1/1) ... [2018-11-22 23:38:01,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9ee6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:01, skipping insertion in model container [2018-11-22 23:38:01,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:38:01" (1/1) ... [2018-11-22 23:38:01,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:38:01,955 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:38:02,096 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:38:02,099 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:38:02,113 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:38:02,124 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:38:02,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02 WrapperNode [2018-11-22 23:38:02,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:38:02,125 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:38:02,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:38:02,125 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:38:02,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:38:02,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:38:02,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:38:02,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:38:02,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... [2018-11-22 23:38:02,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:38:02,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:38:02,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:38:02,154 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:38:02,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/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 [2018-11-22 23:38:02,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:38:02,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:38:02,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:38:02,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:38:02,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:38:02,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:38:02,355 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:38:02,355 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-22 23:38:02,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:38:02 BoogieIcfgContainer [2018-11-22 23:38:02,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:38:02,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:38:02,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:38:02,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:38:02,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:38:01" (1/3) ... [2018-11-22 23:38:02,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a297d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:38:02, skipping insertion in model container [2018-11-22 23:38:02,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:38:02" (2/3) ... [2018-11-22 23:38:02,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a297d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:38:02, skipping insertion in model container [2018-11-22 23:38:02,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:38:02" (3/3) ... [2018-11-22 23:38:02,361 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-11-22 23:38:02,367 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:38:02,372 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 23:38:02,385 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 23:38:02,411 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:38:02,411 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:38:02,411 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:38:02,411 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:38:02,411 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:38:02,411 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:38:02,412 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:38:02,412 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:38:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-22 23:38:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-22 23:38:02,433 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:38:02,434 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:38:02,435 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:38:02,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:38:02,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-11-22 23:38:02,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:38:02,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:38:02,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:38:02,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:38:02,482 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:38:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:38:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:38:02,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:38:02,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:38:02,572 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:38:02,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:38:02,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:38:02,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:38:02,585 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2018-11-22 23:38:02,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:38:02,606 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-22 23:38:02,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:38:02,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-22 23:38:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:38:02,618 INFO L225 Difference]: With dead ends: 26 [2018-11-22 23:38:02,618 INFO L226 Difference]: Without dead ends: 13 [2018-11-22 23:38:02,621 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:38:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-22 23:38:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-22 23:38:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-22 23:38:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-22 23:38:02,650 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-22 23:38:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:38:02,650 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-22 23:38:02,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:38:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-22 23:38:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-22 23:38:02,651 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:38:02,651 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:38:02,652 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:38:02,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:38:02,652 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-11-22 23:38:02,652 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:38:02,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:38:02,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:38:02,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:38:02,654 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:38:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:38:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:38:02,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:38:02,723 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 23:38:02,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-22 23:38:02,725 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-11-22 23:38:02,752 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 23:38:02,752 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 23:38:02,855 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-22 23:38:02,856 INFO L272 AbstractInterpreter]: Visited 12 different actions 14 times. Merged at 1 different actions 1 times. Never widened. Performed 58 root evaluator evaluations with a maximum evaluation depth of 5. Performed 58 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-22 23:38:02,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:38:02,864 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-22 23:38:02,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:38:02,864 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/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 [2018-11-22 23:38:02,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:38:02,874 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-22 23:38:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:38:02,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:38:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:38:02,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-22 23:38:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:38:03,018 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:38:03,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2018-11-22 23:38:03,019 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:38:03,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 23:38:03,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 23:38:03,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:38:03,020 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-11-22 23:38:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:38:03,040 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-22 23:38:03,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 23:38:03,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-22 23:38:03,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:38:03,041 INFO L225 Difference]: With dead ends: 13 [2018-11-22 23:38:03,041 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:38:03,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:38:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:38:03,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:38:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:38:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:38:03,043 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-22 23:38:03,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:38:03,043 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:38:03,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 23:38:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:38:03,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:38:03,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 23:38:03,070 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-22 23:38:03,071 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-22 23:38:03,071 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:38:03,071 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:38:03,071 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 23:38:03,071 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 23:38:03,071 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 23:38:03,071 INFO L444 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2018-11-22 23:38:03,072 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-11-22 23:38:03,072 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-11-22 23:38:03,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:38:03 BoogieIcfgContainer [2018-11-22 23:38:03,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:38:03,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:38:03,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:38:03,088 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:38:03,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:38:02" (3/4) ... [2018-11-22 23:38:03,092 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:38:03,098 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:38:03,098 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:38:03,103 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-22 23:38:03,103 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-22 23:38:03,139 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_927dfd87-52db-4fa3-9c72-cc145fdc7420/bin-2019/utaipan/witness.graphml [2018-11-22 23:38:03,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:38:03,140 INFO L168 Benchmark]: Toolchain (without parser) took 1226.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -108.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 11.5 GB. [2018-11-22 23:38:03,141 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:38:03,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.68 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:38:03,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.47 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:38:03,142 INFO L168 Benchmark]: Boogie Preprocessor took 12.63 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:38:03,143 INFO L168 Benchmark]: RCFGBuilder took 201.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-22 23:38:03,143 INFO L168 Benchmark]: TraceAbstraction took 731.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 11.5 GB. [2018-11-22 23:38:03,143 INFO L168 Benchmark]: Witness Printer took 51.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:38:03,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.68 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.47 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.63 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 201.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -186.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 731.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.3 MB). Peak memory consumption was 59.3 MB. Max. memory is 11.5 GB. * Witness Printer took 51.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 4 SDslu, 25 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 6 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...