./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/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_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/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 0.1.23-635dfa2 [2018-12-01 21:46:44,577 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 21:46:44,578 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 21:46:44,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 21:46:44,585 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 21:46:44,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 21:46:44,586 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 21:46:44,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 21:46:44,588 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 21:46:44,588 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 21:46:44,588 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 21:46:44,589 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 21:46:44,589 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 21:46:44,590 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 21:46:44,590 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 21:46:44,591 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 21:46:44,591 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 21:46:44,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 21:46:44,593 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 21:46:44,594 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 21:46:44,594 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 21:46:44,595 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 21:46:44,596 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 21:46:44,596 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 21:46:44,596 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 21:46:44,597 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 21:46:44,597 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 21:46:44,598 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 21:46:44,598 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 21:46:44,599 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 21:46:44,599 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 21:46:44,599 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 21:46:44,600 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 21:46:44,600 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 21:46:44,600 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 21:46:44,601 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 21:46:44,601 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-01 21:46:44,608 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 21:46:44,608 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 21:46:44,609 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 21:46:44,609 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 21:46:44,609 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-01 21:46:44,609 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-01 21:46:44,609 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-01 21:46:44,609 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-01 21:46:44,609 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-01 21:46:44,609 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-01 21:46:44,610 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-01 21:46:44,610 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-01 21:46:44,610 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-01 21:46:44,610 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 21:46:44,610 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 21:46:44,610 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 21:46:44,611 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 21:46:44,612 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 21:46:44,612 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 21:46:44,612 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 21:46:44,612 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 21:46:44,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 21:46:44,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 21:46:44,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 21:46:44,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 21:46:44,613 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-01 21:46:44,613 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 21:46:44,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 21:46:44,613 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-01 21:46:44,613 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_7c910852-06b2-4627-b3fe-becd297dd017/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 [2018-12-01 21:46:44,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 21:46:44,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 21:46:44,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 21:46:44,639 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 21:46:44,639 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 21:46:44,639 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-12-01 21:46:44,674 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/data/740d5d3c0/8aafb120903b4d808795161d8e8c304d/FLAGb80b1f1ad [2018-12-01 21:46:44,963 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 21:46:44,963 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/sv-benchmarks/c/loop-lit/gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-12-01 21:46:44,967 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/data/740d5d3c0/8aafb120903b4d808795161d8e8c304d/FLAGb80b1f1ad [2018-12-01 21:46:44,975 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/data/740d5d3c0/8aafb120903b4d808795161d8e8c304d [2018-12-01 21:46:44,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 21:46:44,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 21:46:44,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 21:46:44,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 21:46:44,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 21:46:44,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:46:44" (1/1) ... [2018-12-01 21:46:44,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e0d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:44, skipping insertion in model container [2018-12-01 21:46:44,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:46:44" (1/1) ... [2018-12-01 21:46:44,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 21:46:44,997 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 21:46:45,086 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 21:46:45,089 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 21:46:45,098 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 21:46:45,108 INFO L195 MainTranslator]: Completed translation [2018-12-01 21:46:45,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45 WrapperNode [2018-12-01 21:46:45,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 21:46:45,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 21:46:45,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 21:46:45,109 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 21:46:45,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 21:46:45,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 21:46:45,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 21:46:45,122 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 21:46:45,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... [2018-12-01 21:46:45,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 21:46:45,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 21:46:45,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 21:46:45,133 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 21:46:45,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/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 [2018-12-01 21:46:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 21:46:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 21:46:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 21:46:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 21:46:45,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 21:46:45,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 21:46:45,275 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 21:46:45,275 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-01 21:46:45,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:46:45 BoogieIcfgContainer [2018-12-01 21:46:45,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 21:46:45,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 21:46:45,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 21:46:45,278 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 21:46:45,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 09:46:44" (1/3) ... [2018-12-01 21:46:45,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468bd877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 09:46:45, skipping insertion in model container [2018-12-01 21:46:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:46:45" (2/3) ... [2018-12-01 21:46:45,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468bd877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 09:46:45, skipping insertion in model container [2018-12-01 21:46:45,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:46:45" (3/3) ... [2018-12-01 21:46:45,280 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call.c.i.p+cfa-reducer.c [2018-12-01 21:46:45,286 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 21:46:45,291 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 21:46:45,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 21:46:45,322 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 21:46:45,322 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 21:46:45,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 21:46:45,323 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 21:46:45,323 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 21:46:45,323 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 21:46:45,323 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 21:46:45,323 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 21:46:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-12-01 21:46:45,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 21:46:45,341 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 21:46:45,342 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 21:46:45,343 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 21:46:45,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 21:46:45,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-12-01 21:46:45,348 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 21:46:45,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 21:46:45,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 21:46:45,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 21:46:45,385 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 21:46:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 21:46:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 21:46:45,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 21:46:45,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-01 21:46:45,443 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 21:46:45,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 21:46:45,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 21:46:45,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 21:46:45,455 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2018-12-01 21:46:45,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 21:46:45,474 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-12-01 21:46:45,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 21:46:45,476 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-01 21:46:45,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 21:46:45,482 INFO L225 Difference]: With dead ends: 26 [2018-12-01 21:46:45,482 INFO L226 Difference]: Without dead ends: 13 [2018-12-01 21:46:45,484 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 [2018-12-01 21:46:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-01 21:46:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-01 21:46:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-01 21:46:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-01 21:46:45,504 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-01 21:46:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 21:46:45,504 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-01 21:46:45,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 21:46:45,504 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-01 21:46:45,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-01 21:46:45,505 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 21:46:45,505 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 21:46:45,505 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 21:46:45,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 21:46:45,505 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-12-01 21:46:45,505 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-01 21:46:45,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 21:46:45,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 21:46:45,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 21:46:45,506 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-01 21:46:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 21:46:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 21:46:45,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 21:46:45,545 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-01 21:46:45,545 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-01 21:46:45,546 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-12-01 21:46:45,565 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-01 21:46:45,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-01 21:46:45,638 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-01 21:46:45,639 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. [2018-12-01 21:46:45,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 21:46:45,644 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-01 21:46:45,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 21:46:45,644 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/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 [2018-12-01 21:46:45,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 21:46:45,650 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-01 21:46:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 21:46:45,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 21:46:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 21:46:45,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-01 21:46:45,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 21:46:45,720 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-12-01 21:46:45,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2018-12-01 21:46:45,720 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-01 21:46:45,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 21:46:45,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 21:46:45,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-01 21:46:45,721 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-12-01 21:46:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 21:46:45,736 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-12-01 21:46:45,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 21:46:45,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-01 21:46:45,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 21:46:45,736 INFO L225 Difference]: With dead ends: 13 [2018-12-01 21:46:45,737 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 21:46:45,737 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-01 21:46:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 21:46:45,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 21:46:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 21:46:45,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 21:46:45,738 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-12-01 21:46:45,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 21:46:45,738 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 21:46:45,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 21:46:45,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 21:46:45,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 21:46:45,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 21:46:45,754 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-01 21:46:45,755 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-01 21:46:45,755 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 21:46:45,755 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 21:46:45,755 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 21:46:45,755 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 21:46:45,755 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 21:46:45,755 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)) [2018-12-01 21:46:45,755 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-12-01 21:46:45,755 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2018-12-01 21:46:45,755 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2018-12-01 21:46:45,755 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2018-12-01 21:46:45,756 INFO L448 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2018-12-01 21:46:45,756 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2018-12-01 21:46:45,756 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-12-01 21:46:45,756 INFO L448 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-12-01 21:46:45,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 09:46:45 BoogieIcfgContainer [2018-12-01 21:46:45,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 21:46:45,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 21:46:45,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 21:46:45,764 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 21:46:45,764 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:46:45" (3/4) ... [2018-12-01 21:46:45,767 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 21:46:45,770 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 21:46:45,770 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 21:46:45,773 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-01 21:46:45,773 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-01 21:46:45,798 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7c910852-06b2-4627-b3fe-becd297dd017/bin-2019/utaipan/witness.graphml [2018-12-01 21:46:45,798 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 21:46:45,798 INFO L168 Benchmark]: Toolchain (without parser) took 821.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -114.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-12-01 21:46:45,799 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-12-01 21:46:45,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 21:46:45,799 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.81 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 21:46:45,800 INFO L168 Benchmark]: Boogie Preprocessor took 10.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 21:46:45,800 INFO L168 Benchmark]: RCFGBuilder took 142.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-01 21:46:45,800 INFO L168 Benchmark]: TraceAbstraction took 487.78 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: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. [2018-12-01 21:46:45,800 INFO L168 Benchmark]: Witness Printer took 33.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 21:46:45,801 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 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 130.78 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.7 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 12.81 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.22 ms. Allocated memory is still 1.0 GB. Free memory is still 941.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 941.7 MB in the beginning and 1.1 GB in the end (delta: -179.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 487.78 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: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. * Witness Printer took 33.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. 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, 0.4s 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, 0.0s 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, 0.0s 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, 0.1s 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...