./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/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 e7cbc65d3ba09c4819731d0da35aff1b9185c4a8 ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:44:57,658 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:44:57,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:44:57,666 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:44:57,666 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:44:57,667 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:44:57,668 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:44:57,669 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:44:57,670 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:44:57,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:44:57,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:44:57,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:44:57,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:44:57,674 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:44:57,674 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:44:57,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:44:57,675 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:44:57,677 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:44:57,678 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:44:57,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:44:57,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:44:57,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:44:57,683 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:44:57,683 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:44:57,683 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:44:57,684 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:44:57,685 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:44:57,686 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:44:57,687 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:44:57,687 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:44:57,687 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:44:57,688 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:44:57,688 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:44:57,688 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:44:57,689 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:44:57,690 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:44:57,690 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:44:57,700 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:44:57,700 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:44:57,701 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:44:57,701 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:44:57,701 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:44:57,701 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:44:57,701 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:44:57,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:44:57,702 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:44:57,702 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:44:57,702 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:44:57,702 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:44:57,702 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:44:57,703 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:44:57,703 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:44:57,703 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:44:57,703 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:44:57,703 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:44:57,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:44:57,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:44:57,704 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:44:57,704 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:44:57,704 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:44:57,704 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:44:57,704 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:44:57,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:44:57,705 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:44:57,705 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:44:57,705 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:44:57,705 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:44:57,705 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:44:57,705 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:44:57,705 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:44:57,706 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:44:57,706 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:44:57,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:44:57,706 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:44:57,706 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_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/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 -> e7cbc65d3ba09c4819731d0da35aff1b9185c4a8 [2018-11-18 17:44:57,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:44:57,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:44:57,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:44:57,742 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:44:57,742 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:44:57,743 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i [2018-11-18 17:44:57,782 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/data/3264e9051/d5230722996848c4857e479fadf3631d/FLAGda9fa915a [2018-11-18 17:44:58,172 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:44:58,172 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/sv-benchmarks/c/loop-acceleration/simple_true-unreach-call1.i [2018-11-18 17:44:58,176 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/data/3264e9051/d5230722996848c4857e479fadf3631d/FLAGda9fa915a [2018-11-18 17:44:58,184 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/data/3264e9051/d5230722996848c4857e479fadf3631d [2018-11-18 17:44:58,186 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:44:58,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:44:58,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:44:58,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:44:58,191 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:44:58,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da0b297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58, skipping insertion in model container [2018-11-18 17:44:58,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:44:58,212 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:44:58,315 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:44:58,318 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:44:58,325 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:44:58,333 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:44:58,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58 WrapperNode [2018-11-18 17:44:58,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:44:58,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:44:58,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:44:58,334 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:44:58,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:44:58,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:44:58,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:44:58,351 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:44:58,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... [2018-11-18 17:44:58,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:44:58,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:44:58,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:44:58,368 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:44:58,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/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 [2018-11-18 17:44:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:44:58,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:44:58,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:44:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:44:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:44:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:44:58,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 17:44:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 17:44:58,561 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:44:58,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:44:58 BoogieIcfgContainer [2018-11-18 17:44:58,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:44:58,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:44:58,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:44:58,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:44:58,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:44:58" (1/3) ... [2018-11-18 17:44:58,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578103e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:44:58, skipping insertion in model container [2018-11-18 17:44:58,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:44:58" (2/3) ... [2018-11-18 17:44:58,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578103e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:44:58, skipping insertion in model container [2018-11-18 17:44:58,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:44:58" (3/3) ... [2018-11-18 17:44:58,567 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call1.i [2018-11-18 17:44:58,576 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:44:58,582 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:44:58,596 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:44:58,623 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:44:58,624 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:44:58,624 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:44:58,624 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:44:58,624 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:44:58,624 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:44:58,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:44:58,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:44:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-18 17:44:58,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:44:58,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:58,643 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:44:58,644 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:44:58,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:58,648 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-18 17:44:58,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:44:58,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:44:58,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:58,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:44:58,688 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:44:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:44:58,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:44:58,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:44:58,722 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:44:58,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 17:44:58,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 17:44:58,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:44:58,734 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-18 17:44:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:58,746 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-18 17:44:58,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 17:44:58,746 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 17:44:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:58,752 INFO L225 Difference]: With dead ends: 29 [2018-11-18 17:44:58,752 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 17:44:58,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 17:44:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 17:44:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 17:44:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 17:44:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 17:44:58,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 17:44:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:58,778 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 17:44:58,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 17:44:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 17:44:58,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:44:58,779 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:58,779 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:44:58,779 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:44:58,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:58,779 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-11-18 17:44:58,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:44:58,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:44:58,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:58,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:44:58,781 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:44:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:44:58,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:44:58,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:44:58,853 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:44:58,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:44:58,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:44:58,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:44:58,855 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-18 17:44:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:58,865 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 17:44:58,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:44:58,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 17:44:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:58,866 INFO L225 Difference]: With dead ends: 19 [2018-11-18 17:44:58,866 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 17:44:58,867 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:44:58,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 17:44:58,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 17:44:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 17:44:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 17:44:58,869 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-18 17:44:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:58,870 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 17:44:58,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:44:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 17:44:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:44:58,870 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:58,870 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:44:58,870 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:44:58,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:58,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-11-18 17:44:58,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:44:58,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:44:58,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:58,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:44:58,872 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:44:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:44:58,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:44:58,952 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:44:58,953 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-11-18 17:44:58,954 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-11-18 17:44:58,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:44:58,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:44:59,100 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 17:44:59,102 INFO L272 AbstractInterpreter]: Visited 11 different actions 26 times. Merged at 3 different actions 9 times. Never widened. Performed 58 root evaluator evaluations with a maximum evaluation depth of 13. Performed 58 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 2 fixpoints after 2 different actions. Largest state had 2 variables. [2018-11-18 17:44:59,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:59,113 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 17:44:59,153 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-11-18 17:44:59,153 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 17:44:59,175 INFO L415 sIntCurrentIteration]: We unified 12 AI predicates to 12 [2018-11-18 17:44:59,175 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 17:44:59,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 17:44:59,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-11-18 17:44:59,176 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:44:59,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 17:44:59,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 17:44:59,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:44:59,177 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-11-18 17:44:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:59,232 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-18 17:44:59,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:44:59,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 17:44:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:59,233 INFO L225 Difference]: With dead ends: 14 [2018-11-18 17:44:59,233 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:44:59,233 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:44:59,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:44:59,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:44:59,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:44:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:44:59,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-11-18 17:44:59,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:59,234 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:44:59,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 17:44:59,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:44:59,234 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:44:59,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:44:59,296 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 17:44:59,296 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:44:59,296 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:44:59,296 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:44:59,296 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:44:59,296 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:44:59,296 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-11-18 17:44:59,296 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-11-18 17:44:59,296 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-11-18 17:44:59,297 INFO L425 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-11-18 17:44:59,297 INFO L421 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-11-18 17:44:59,297 INFO L421 ceAbstractionStarter]: At program point L10-4(lines 10 12) the Hoare annotation is: (and (not (= main_~x~0 0)) (= (mod main_~x~0 2) 0)) [2018-11-18 17:44:59,297 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-18 17:44:59,297 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-18 17:44:59,297 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-18 17:44:59,298 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-18 17:44:59,298 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-18 17:44:59,298 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-18 17:44:59,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:44:59 BoogieIcfgContainer [2018-11-18 17:44:59,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:44:59,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:44:59,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:44:59,303 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:44:59,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:44:58" (3/4) ... [2018-11-18 17:44:59,306 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:44:59,309 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:44:59,309 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:44:59,309 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 17:44:59,311 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 17:44:59,311 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 17:44:59,311 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:44:59,333 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_6cc1c5ad-d3f6-442e-bd7e-57d548bd600b/bin-2019/utaipan/witness.graphml [2018-11-18 17:44:59,333 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:44:59,334 INFO L168 Benchmark]: Toolchain (without parser) took 1147.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 953.8 MB in the beginning and 1.0 GB in the end (delta: -92.3 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:44:59,335 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:44:59,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.32 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:44:59,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.74 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:44:59,336 INFO L168 Benchmark]: Boogie Preprocessor took 16.91 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:44:59,336 INFO L168 Benchmark]: RCFGBuilder took 193.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:44:59,336 INFO L168 Benchmark]: TraceAbstraction took 740.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. [2018-11-18 17:44:59,337 INFO L168 Benchmark]: Witness Printer took 30.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:44:59,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.32 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 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 16.74 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.91 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 193.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -178.2 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 740.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 11.5 GB. * Witness Printer took 30.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 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: 4]: 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: 10]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 3 SDslu, 30 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 1 AbstIntStrong, 0.8333333333333334 AbsIntWeakeningRatio, 0.25 AbsIntAvgWeakeningVarsNumRemoved, 0.08333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 20 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 829 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...