./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c3fbe1c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --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 6b2483ed4878f440f5477fb40e4fe96958613e0f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:10:58,657 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:10:58,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:10:58,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:10:58,671 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:10:58,672 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:10:58,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:10:58,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:10:58,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:10:58,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:10:58,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:10:58,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:10:58,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:10:58,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:10:58,684 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:10:58,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:10:58,686 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:10:58,688 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:10:58,690 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:10:58,692 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:10:58,693 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:10:58,695 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:10:58,698 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 15:10:58,698 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 15:10:58,698 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 15:10:58,700 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 15:10:58,701 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 15:10:58,702 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 15:10:58,703 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 15:10:58,704 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 15:10:58,704 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 15:10:58,705 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 15:10:58,706 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 15:10:58,706 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 15:10:58,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 15:10:58,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 15:10:58,708 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 15:10:58,724 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:10:58,724 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:10:58,725 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:10:58,725 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 15:10:58,726 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 15:10:58,726 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 15:10:58,726 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 15:10:58,727 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 15:10:58,727 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 15:10:58,727 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 15:10:58,727 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 15:10:58,729 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:10:58,729 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 15:10:58,729 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:10:58,729 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 15:10:58,729 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:10:58,729 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:10:58,730 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:10:58,730 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:10:58,731 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 15:10:58,731 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:10:58,731 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:10:58,731 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:10:58,731 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:10:58,732 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:10:58,732 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:10:58,733 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:10:58,733 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:10:58,733 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:10:58,733 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:10:58,733 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 15:10:58,733 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:10:58,734 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:10:58,734 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:10:58,734 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 -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux 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 -> 6b2483ed4878f440f5477fb40e4fe96958613e0f [2018-10-22 15:10:58,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:10:58,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:10:58,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:10:58,800 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:10:58,800 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:10:58,801 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-10-22 15:10:58,857 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83fe21ea8/f04a3831c689408699c2cee928db3a6c/FLAGbd3e26418 [2018-10-22 15:10:59,312 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:10:59,313 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant_true-unreach-call_true-termination.c.i [2018-10-22 15:10:59,320 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83fe21ea8/f04a3831c689408699c2cee928db3a6c/FLAGbd3e26418 [2018-10-22 15:10:59,335 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/83fe21ea8/f04a3831c689408699c2cee928db3a6c [2018-10-22 15:10:59,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:10:59,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 15:10:59,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:10:59,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:10:59,347 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:10:59,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a444286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59, skipping insertion in model container [2018-10-22 15:10:59,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:10:59,383 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:10:59,578 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:10:59,582 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:10:59,601 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:10:59,618 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:10:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59 WrapperNode [2018-10-22 15:10:59,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:10:59,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:10:59,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:10:59,620 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:10:59,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:10:59,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:10:59,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:10:59,643 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:10:59,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... [2018-10-22 15:10:59,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:10:59,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:10:59,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:10:59,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:10:59,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:10:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 15:10:59,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 15:10:59,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:10:59,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:10:59,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 15:10:59,806 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 15:10:59,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 15:10:59,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 15:11:00,076 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:11:00,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:11:00 BoogieIcfgContainer [2018-10-22 15:11:00,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:11:00,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:11:00,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:11:00,090 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:11:00,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:10:59" (1/3) ... [2018-10-22 15:11:00,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ff2247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:11:00, skipping insertion in model container [2018-10-22 15:11:00,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:10:59" (2/3) ... [2018-10-22 15:11:00,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ff2247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:11:00, skipping insertion in model container [2018-10-22 15:11:00,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:11:00" (3/3) ... [2018-10-22 15:11:00,094 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_variant_true-unreach-call_true-termination.c.i [2018-10-22 15:11:00,109 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:11:00,125 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:11:00,148 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:11:00,181 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:11:00,182 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:11:00,182 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:11:00,183 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:11:00,183 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:11:00,183 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:11:00,183 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:11:00,183 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:11:00,183 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:11:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-22 15:11:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-22 15:11:00,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:11:00,210 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:11:00,212 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:11:00,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:11:00,218 INFO L82 PathProgramCache]: Analyzing trace with hash 380045771, now seen corresponding path program 1 times [2018-10-22 15:11:00,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:11:00,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:00,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:11:00,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:00,272 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:11:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:00,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:11:00,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:11:00,348 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 15:11:00,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:11:00,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:11:00,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:11:00,367 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-22 15:11:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:11:00,392 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-10-22 15:11:00,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:11:00,394 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-10-22 15:11:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:11:00,404 INFO L225 Difference]: With dead ends: 35 [2018-10-22 15:11:00,404 INFO L226 Difference]: Without dead ends: 15 [2018-10-22 15:11:00,408 INFO L605 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 [2018-10-22 15:11:00,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-22 15:11:00,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-22 15:11:00,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-22 15:11:00,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-22 15:11:00,447 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-22 15:11:00,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:11:00,448 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-22 15:11:00,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:11:00,448 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-22 15:11:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 15:11:00,449 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:11:00,450 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:11:00,450 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:11:00,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:11:00,450 INFO L82 PathProgramCache]: Analyzing trace with hash 137515447, now seen corresponding path program 1 times [2018-10-22 15:11:00,451 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:11:00,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:00,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:11:00,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:00,453 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:11:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:00,883 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-10-22 15:11:01,097 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 14 [2018-10-22 15:11:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:01,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:11:01,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-22 15:11:01,343 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 15:11:01,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-22 15:11:01,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-22 15:11:01,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-22 15:11:01,346 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2018-10-22 15:11:01,579 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-22 15:11:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:11:01,744 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-22 15:11:01,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:11:01,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-22 15:11:01,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:11:01,747 INFO L225 Difference]: With dead ends: 23 [2018-10-22 15:11:01,747 INFO L226 Difference]: Without dead ends: 17 [2018-10-22 15:11:01,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-22 15:11:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-22 15:11:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-22 15:11:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-22 15:11:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-22 15:11:01,754 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-22 15:11:01,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:11:01,755 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-22 15:11:01,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-22 15:11:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-22 15:11:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-22 15:11:01,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:11:01,756 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:11:01,756 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:11:01,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:11:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash -431115791, now seen corresponding path program 1 times [2018-10-22 15:11:01,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:11:01,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:01,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:11:01,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:01,759 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:11:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:02,214 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-10-22 15:11:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:02,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:02,411 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:11:02,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-10-22 15:11:02,415 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [22], [28], [35], [38], [40], [46], [47], [48], [50] [2018-10-22 15:11:02,467 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 15:11:02,467 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 15:11:03,050 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-22 15:11:03,053 INFO L272 AbstractInterpreter]: Visited 15 different actions 133 times. Merged at 4 different actions 60 times. Widened at 1 different actions 11 times. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-10-22 15:11:03,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:11:03,087 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-22 15:11:03,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:03,087 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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 [2018-10-22 15:11:03,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:11:03,098 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 15:11:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:03,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:11:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:03,282 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:11:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:03,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:03,490 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:11:03,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:11:03,508 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-22 15:11:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:03,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:11:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:03,591 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:11:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:03,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:11:03,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 17 [2018-10-22 15:11:03,660 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:11:03,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 15:11:03,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 15:11:03,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-10-22 15:11:03,662 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 12 states. [2018-10-22 15:11:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:11:03,893 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-22 15:11:03,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-22 15:11:03,897 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-10-22 15:11:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:11:03,898 INFO L225 Difference]: With dead ends: 25 [2018-10-22 15:11:03,898 INFO L226 Difference]: Without dead ends: 19 [2018-10-22 15:11:03,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-10-22 15:11:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-22 15:11:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-22 15:11:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-22 15:11:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-22 15:11:03,906 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-22 15:11:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:11:03,907 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-22 15:11:03,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 15:11:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-22 15:11:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-22 15:11:03,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:11:03,908 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:11:03,908 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:11:03,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:11:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1424888917, now seen corresponding path program 2 times [2018-10-22 15:11:03,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:11:03,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:03,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:11:03,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:03,910 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:11:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:04,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:04,238 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:11:04,239 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 15:11:04,239 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 15:11:04,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:04,239 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:11:04,248 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:11:04,249 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 15:11:04,260 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:11:04,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:11:04,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:11:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:04,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:11:04,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:04,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:04,563 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:11:04,579 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:11:04,579 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-10-22 15:11:04,602 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:11:04,602 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:11:04,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:11:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:04,731 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:11:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:04,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:11:04,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 20 [2018-10-22 15:11:04,764 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:11:04,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-22 15:11:04,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-22 15:11:04,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-22 15:11:04,766 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 14 states. [2018-10-22 15:11:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:11:05,050 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-10-22 15:11:05,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 15:11:05,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2018-10-22 15:11:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:11:05,053 INFO L225 Difference]: With dead ends: 31 [2018-10-22 15:11:05,053 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 15:11:05,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-10-22 15:11:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 15:11:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-22 15:11:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-22 15:11:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-22 15:11:05,061 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-22 15:11:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:11:05,062 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-22 15:11:05,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-22 15:11:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-22 15:11:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:11:05,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:11:05,064 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:11:05,065 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:11:05,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:11:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1072393119, now seen corresponding path program 3 times [2018-10-22 15:11:05,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 15:11:05,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:05,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:11:05,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:11:05,067 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 15:11:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:11:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 15:11:05,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:05,442 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 15:11:05,442 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-22 15:11:05,443 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-22 15:11:05,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:05,443 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:11:05,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:11:05,457 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-22 15:11:05,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-22 15:11:05,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:11:05,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:11:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:05,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:11:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:06,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:11:06,164 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-10-22 15:11:06,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:11:06,188 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-22 15:11:06,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-10-22 15:11:06,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:11:06,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:11:06,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:11:06,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-22 15:11:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (7)] Exception during sending of exit command (exit): Broken pipe [2018-10-22 15:11:06,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-10-22 15:11:06,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11, 11, 11] total 25 [2018-10-22 15:11:06,332 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-22 15:11:06,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-22 15:11:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-22 15:11:06,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-10-22 15:11:06,335 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 17 states. [2018-10-22 15:11:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:11:06,674 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-10-22 15:11:06,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 15:11:06,674 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 22 [2018-10-22 15:11:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:11:06,675 INFO L225 Difference]: With dead ends: 27 [2018-10-22 15:11:06,675 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 15:11:06,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2018-10-22 15:11:06,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 15:11:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 15:11:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 15:11:06,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 15:11:06,678 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-10-22 15:11:06,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:11:06,678 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 15:11:06,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-22 15:11:06,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 15:11:06,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 15:11:06,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 15:11:06,824 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 15:11:06,824 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:11:06,824 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 15:11:06,825 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 15:11:06,825 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 15:11:06,825 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 15:11:06,825 INFO L421 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 main_~z~0))) (and (<= .cse0 0) (<= 0 .cse0))) [2018-10-22 15:11:06,825 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2018-10-22 15:11:06,825 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 23) no Hoare annotation was computed. [2018-10-22 15:11:06,825 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 23) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0 main_~z~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 10 28) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 28) the Hoare annotation is: true [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point L24(lines 24 26) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 15:11:06,826 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 15:11:06,827 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 15:11:06,827 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 15:11:06,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:11:06 BoogieIcfgContainer [2018-10-22 15:11:06,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:11:06,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 15:11:06,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 15:11:06,841 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 15:11:06,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:11:00" (3/4) ... [2018-10-22 15:11:06,844 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 15:11:06,849 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 15:11:06,850 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 15:11:06,850 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 15:11:06,854 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-22 15:11:06,854 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-10-22 15:11:06,854 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 15:11:06,909 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 15:11:06,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 15:11:06,910 INFO L168 Benchmark]: Toolchain (without parser) took 7570.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 950.5 MB in the beginning and 1.1 GB in the end (delta: -108.2 MB). Peak memory consumption was 91.5 MB. Max. memory is 11.5 GB. [2018-10-22 15:11:06,911 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 15:11:06,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.28 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 15:11:06,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.35 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 15:11:06,913 INFO L168 Benchmark]: Boogie Preprocessor took 24.02 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 15:11:06,913 INFO L168 Benchmark]: RCFGBuilder took 409.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. [2018-10-22 15:11:06,914 INFO L168 Benchmark]: TraceAbstraction took 6761.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.5 MB). Peak memory consumption was 104.7 MB. Max. memory is 11.5 GB. [2018-10-22 15:11:06,915 INFO L168 Benchmark]: Witness Printer took 68.94 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. [2018-10-22 15:11:06,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 276.28 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 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 23.35 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.02 ms. Allocated memory is still 1.0 GB. Free memory is still 939.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 409.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -162.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6761.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.5 MB). Peak memory consumption was 104.7 MB. Max. memory is 11.5 GB. * Witness Printer took 68.94 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: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 19]: Loop Invariant Derived loop invariant: x + j <= i + y + z && i + y + z <= x + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 6.6s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 25 SDslu, 309 SDs, 0 SdLazy, 266 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 14 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 33 HoareAnnotationTreeSize, 13 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 44465 SizeOfPredicates, 42 NumberOfNonLiveVariables, 358 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 2/140 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...