./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/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 e05793781d8e05fe8376a30b6751438f3b1a9d08 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/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 e05793781d8e05fe8376a30b6751438f3b1a9d08 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:36,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:36,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:36,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:36,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:36,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:36,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:36,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:36,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:36,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:36,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:36,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:36,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:36,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:36,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:36,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:36,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:36,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:36,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:36,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:36,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:36,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:36,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:36,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:36,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:36,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:36,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:36,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:36,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:36,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:36,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:36,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:36,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:36,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:36,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:36,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:36,508 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:36,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:36,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:36,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:36,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:36,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:36,527 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:36,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:36,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:36,528 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:36,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:36,528 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:36,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:36,528 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:36,529 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:36,529 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:36,529 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:36,529 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:36,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:36,530 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:36,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:36,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:36,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:36,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:36,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:36,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:36,531 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:36,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:36,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:36,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:36,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:36,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:36,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:36,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:36,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:36,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:36,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:36,533 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:36,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:36,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:36,533 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:36,533 INFO L138 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_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/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 -> e05793781d8e05fe8376a30b6751438f3b1a9d08 [2019-10-22 11:26:36,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:36,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:36,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:36,581 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:36,582 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:36,582 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2019-10-22 11:26:36,635 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/dc2122ee6/19d9c61d679e440e8620f6f2644cd77f/FLAGe1cacf89d [2019-10-22 11:26:37,017 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:37,018 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2019-10-22 11:26:37,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/dc2122ee6/19d9c61d679e440e8620f6f2644cd77f/FLAGe1cacf89d [2019-10-22 11:26:37,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/dc2122ee6/19d9c61d679e440e8620f6f2644cd77f [2019-10-22 11:26:37,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:37,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:37,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:37,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:37,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:37,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e17fc82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37, skipping insertion in model container [2019-10-22 11:26:37,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,059 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:37,075 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:37,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:37,249 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:37,325 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:37,346 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:37,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37 WrapperNode [2019-10-22 11:26:37,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:37,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:37,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:37,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:37,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:37,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:37,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:37,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:37,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... [2019-10-22 11:26:37,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:37,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:37,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:37,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:37,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/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 [2019-10-22 11:26:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 11:26:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 11:26:37,568 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:37,568 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:37,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:37 BoogieIcfgContainer [2019-10-22 11:26:37,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:37,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:37,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:37,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:37,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:37" (1/3) ... [2019-10-22 11:26:37,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860fa9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:37, skipping insertion in model container [2019-10-22 11:26:37,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:37" (2/3) ... [2019-10-22 11:26:37,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860fa9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:37, skipping insertion in model container [2019-10-22 11:26:37,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:37" (3/3) ... [2019-10-22 11:26:37,577 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2019-10-22 11:26:37,586 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:37,593 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:37,606 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:37,630 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:37,630 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:37,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:37,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:37,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:37,630 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:37,630 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:37,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 11:26:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:37,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:37,650 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:37,652 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:37,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:37,656 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-10-22 11:26:37,664 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:37,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443281571] [2019-10-22 11:26:37,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:37,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:37,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:37,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443281571] [2019-10-22 11:26:37,795 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:37,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:37,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610820384] [2019-10-22 11:26:37,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:37,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:37,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:37,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:37,821 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-10-22 11:26:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:37,892 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-22 11:26:37,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:37,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 11:26:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:37,904 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:26:37,904 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:26:37,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:26:37,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 11:26:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:26:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-22 11:26:37,951 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-10-22 11:26:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:37,951 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-22 11:26:37,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-22 11:26:37,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:26:37,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:37,954 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:37,954 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-10-22 11:26:37,955 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:37,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583187820] [2019-10-22 11:26:37,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:37,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:37,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:38,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583187820] [2019-10-22 11:26:38,041 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962401895] [2019-10-22 11:26:38,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:38,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:38,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:38,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:38,121 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:38,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:38,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [136790222] [2019-10-22 11:26:38,327 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 16 [2019-10-22 11:26:38,372 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:26:38,373 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:26:38,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:38,634 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:26:38,639 INFO L168 Benchmark]: Toolchain (without parser) took 1597.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -138.0 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,641 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:38,642 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -229.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,643 INFO L168 Benchmark]: Boogie Preprocessor took 13.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,644 INFO L168 Benchmark]: RCFGBuilder took 181.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,645 INFO L168 Benchmark]: TraceAbstraction took 1065.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:38,648 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 305.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -229.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 181.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1065.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 71.8 MB). Peak memory consumption was 71.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:40,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:40,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:40,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:40,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:40,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:40,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:40,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:40,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:40,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:40,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:40,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:40,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:40,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:40,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:40,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:40,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:40,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:40,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:40,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:40,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:40,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:40,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:40,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:40,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:40,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:40,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:40,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:40,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:40,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:40,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:40,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:40,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:40,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:40,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:40,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:40,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:40,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:40,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:40,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:40,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:40,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:40,813 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:40,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:40,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:40,823 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:40,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:40,824 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:40,824 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:40,824 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:40,824 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:40,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:40,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:40,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:40,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:40,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:40,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:40,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:40,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:40,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:40,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:40,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:40,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:40,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:40,828 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/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 -> e05793781d8e05fe8376a30b6751438f3b1a9d08 [2019-10-22 11:26:40,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:40,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:40,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:40,886 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:40,887 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:40,887 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2019-10-22 11:26:40,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/0e7fe9a00/7dd28cba1c0a455a810a125b2f787e66/FLAG4baec77e4 [2019-10-22 11:26:41,332 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:41,333 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/sv-benchmarks/c/recursive-simple/id_i5_o5-2.c [2019-10-22 11:26:41,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/0e7fe9a00/7dd28cba1c0a455a810a125b2f787e66/FLAG4baec77e4 [2019-10-22 11:26:41,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/data/0e7fe9a00/7dd28cba1c0a455a810a125b2f787e66 [2019-10-22 11:26:41,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:41,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:41,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:41,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:41,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:41,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:41,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2d3726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41, skipping insertion in model container [2019-10-22 11:26:41,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:41,734 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:41,745 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:41,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:41,925 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:41,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:41,980 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:41,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41 WrapperNode [2019-10-22 11:26:41,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:41,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:41,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:41,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:41,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:41,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:42,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:42,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:42,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:42,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... [2019-10-22 11:26:42,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:42,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:42,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:42,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:42,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/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 [2019-10-22 11:26:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-10-22 11:26:42,139 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-10-22 11:26:42,255 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:42,255 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:42,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:42 BoogieIcfgContainer [2019-10-22 11:26:42,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:42,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:42,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:42,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:42,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:41" (1/3) ... [2019-10-22 11:26:42,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295136e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:42, skipping insertion in model container [2019-10-22 11:26:42,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:41" (2/3) ... [2019-10-22 11:26:42,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295136e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:42, skipping insertion in model container [2019-10-22 11:26:42,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:42" (3/3) ... [2019-10-22 11:26:42,263 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i5_o5-2.c [2019-10-22 11:26:42,272 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:42,279 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:42,287 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:42,304 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:42,304 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:42,304 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:42,304 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:42,304 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:42,304 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:42,304 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:42,305 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 11:26:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:42,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:42,321 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:42,322 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-10-22 11:26:42,334 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:42,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [518357275] [2019-10-22 11:26:42,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:42,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 11:26:42,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:42,487 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:42,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [518357275] [2019-10-22 11:26:42,592 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:42,592 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-10-22 11:26:42,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188232418] [2019-10-22 11:26:42,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:26:42,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:42,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:26:42,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:42,607 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 7 states. [2019-10-22 11:26:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:42,681 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-22 11:26:42,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:42,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-10-22 11:26:42,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:42,693 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:26:42,693 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:26:42,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:42,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:26:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 11:26:42,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:26:42,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-22 11:26:42,735 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-10-22 11:26:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:42,735 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-22 11:26:42,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:26:42,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-22 11:26:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:26:42,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:42,737 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:42,938 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:42,938 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:42,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:42,938 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-10-22 11:26:42,939 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:42,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [239988160] [2019-10-22 11:26:42,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:42,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:42,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:43,008 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:43,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:43,192 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [239988160] [2019-10-22 11:26:43,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662452283] [2019-10-22 11:26:43,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:43,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:43,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:43,241 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:43,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:43,368 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:43,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 7] total 9 [2019-10-22 11:26:43,368 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054952091] [2019-10-22 11:26:43,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:26:43,370 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:43,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:26:43,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:43,371 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 9 states. [2019-10-22 11:26:43,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:43,461 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-10-22 11:26:43,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:43,463 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-10-22 11:26:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:43,464 INFO L225 Difference]: With dead ends: 21 [2019-10-22 11:26:43,464 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 11:26:43,466 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:43,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 11:26:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 11:26:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:26:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-10-22 11:26:43,477 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2019-10-22 11:26:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:43,478 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-10-22 11:26:43,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:26:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-10-22 11:26:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 11:26:43,481 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:43,481 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:43,883 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:43,883 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:43,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:43,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1824240471, now seen corresponding path program 2 times [2019-10-22 11:26:43,884 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:43,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [950403171] [2019-10-22 11:26:43,884 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:43,920 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:26:43,920 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:43,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:26:43,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:26:43,976 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:44,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:44,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:26:44,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [950403171] [2019-10-22 11:26:44,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767092308] [2019-10-22 11:26:44,273 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:44,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:26:44,310 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:44,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:26:44,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-22 11:26:44,324 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:44,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:44,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:26:44,528 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:44,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7, 9] total 11 [2019-10-22 11:26:44,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965072162] [2019-10-22 11:26:44,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 11:26:44,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:44,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 11:26:44,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:44,530 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 11 states. [2019-10-22 11:26:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:44,658 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2019-10-22 11:26:44,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:26:44,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2019-10-22 11:26:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:44,661 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:26:44,661 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 11:26:44,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-10-22 11:26:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 11:26:44,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 11:26:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 11:26:44,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-22 11:26:44,670 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2019-10-22 11:26:44,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:44,671 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-22 11:26:44,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 11:26:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-22 11:26:44,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:26:44,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:44,674 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:45,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:45,075 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:45,075 INFO L82 PathProgramCache]: Analyzing trace with hash -28473709, now seen corresponding path program 3 times [2019-10-22 11:26:45,076 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:45,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [915403778] [2019-10-22 11:26:45,076 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:45,134 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 11:26:45,134 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:45,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:26:45,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 11:26:45,183 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:45,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:45,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:45,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 11:26:45,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [915403778] [2019-10-22 11:26:45,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793883826] [2019-10-22 11:26:45,576 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:45,616 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-22 11:26:45,616 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:45,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:26:45,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 11:26:45,627 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:45,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:45,905 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:45,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:45,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-22 11:26:45,937 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:45,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8, 11] total 13 [2019-10-22 11:26:45,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001195449] [2019-10-22 11:26:45,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-22 11:26:45,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:45,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-22 11:26:45,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:26:45,939 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 13 states. [2019-10-22 11:26:46,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:46,052 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-10-22 11:26:46,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:46,053 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-10-22 11:26:46,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:46,054 INFO L225 Difference]: With dead ends: 27 [2019-10-22 11:26:46,054 INFO L226 Difference]: Without dead ends: 23 [2019-10-22 11:26:46,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:26:46,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-22 11:26:46,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 11:26:46,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 11:26:46,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-10-22 11:26:46,061 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2019-10-22 11:26:46,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:46,061 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2019-10-22 11:26:46,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-22 11:26:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2019-10-22 11:26:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:26:46,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:46,062 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:46,463 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:46,463 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:46,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2080894167, now seen corresponding path program 4 times [2019-10-22 11:26:46,464 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:46,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1368186398] [2019-10-22 11:26:46,464 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:46,502 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 11:26:46,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:46,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:26:46,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 11:26:46,567 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:46,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:46,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:46,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:47,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:47,036 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:26:47,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1368186398] [2019-10-22 11:26:47,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085753248] [2019-10-22 11:26:47,037 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:47,086 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 11:26:47,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:47,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:26:47,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-22 11:26:47,093 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:47,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:47,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:47,450 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:47,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:26:47,474 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:47,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 9, 13] total 15 [2019-10-22 11:26:47,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237867111] [2019-10-22 11:26:47,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 11:26:47,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:47,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 11:26:47,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:26:47,476 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 15 states. [2019-10-22 11:26:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:47,617 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-10-22 11:26:47,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:47,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 33 [2019-10-22 11:26:47,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:47,619 INFO L225 Difference]: With dead ends: 30 [2019-10-22 11:26:47,619 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 11:26:47,620 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2019-10-22 11:26:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 11:26:47,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-22 11:26:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 11:26:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-10-22 11:26:47,624 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2019-10-22 11:26:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:47,625 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-10-22 11:26:47,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 11:26:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-10-22 11:26:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:47,626 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:47,626 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:48,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:48,027 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:48,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:48,027 INFO L82 PathProgramCache]: Analyzing trace with hash -687460973, now seen corresponding path program 5 times [2019-10-22 11:26:48,028 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:48,028 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [838405959] [2019-10-22 11:26:48,028 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:48,119 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-10-22 11:26:48,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:48,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 11:26:48,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 11:26:48,262 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 11:26:48,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [838405959] [2019-10-22 11:26:48,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909497473] [2019-10-22 11:26:48,557 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:48,607 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-10-22 11:26:48,607 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:48,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-22 11:26:48,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 11:26:48,643 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-22 11:26:48,975 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:48,975 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 15] total 15 [2019-10-22 11:26:48,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953121657] [2019-10-22 11:26:48,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-22 11:26:48,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:48,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-22 11:26:48,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:26:48,977 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 15 states. [2019-10-22 11:26:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:49,094 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-10-22 11:26:49,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 11:26:49,095 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-10-22 11:26:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:49,096 INFO L225 Difference]: With dead ends: 33 [2019-10-22 11:26:49,096 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 11:26:49,097 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:26:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 11:26:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 11:26:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:26:49,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-10-22 11:26:49,105 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2019-10-22 11:26:49,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:49,106 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-10-22 11:26:49,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-22 11:26:49,106 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-10-22 11:26:49,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:26:49,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:49,107 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:49,507 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:49,508 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:49,508 INFO L82 PathProgramCache]: Analyzing trace with hash 547744169, now seen corresponding path program 6 times [2019-10-22 11:26:49,508 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:49,508 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [222736708] [2019-10-22 11:26:49,508 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:49,603 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-10-22 11:26:49,604 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:49,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-22 11:26:49,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-22 11:26:49,679 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 81 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-22 11:26:50,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [222736708] [2019-10-22 11:26:50,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164794276] [2019-10-22 11:26:50,453 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:50,511 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-10-22 11:26:50,511 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 11:26:50,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 11:26:50,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:50,589 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-22 11:26:50,589 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:50,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:51,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:51,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:51,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:51,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:51,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-22 11:26:51,394 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:26:51,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11, 17] total 31 [2019-10-22 11:26:51,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761056882] [2019-10-22 11:26:51,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-10-22 11:26:51,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:51,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-10-22 11:26:51,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2019-10-22 11:26:51,396 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 31 states. [2019-10-22 11:26:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:51,598 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2019-10-22 11:26:51,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-22 11:26:51,599 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 45 [2019-10-22 11:26:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:51,599 INFO L225 Difference]: With dead ends: 63 [2019-10-22 11:26:51,599 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:26:51,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=290, Invalid=1042, Unknown=0, NotChecked=0, Total=1332 [2019-10-22 11:26:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:26:51,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:26:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:26:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:26:51,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2019-10-22 11:26:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:51,601 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:26:51,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-10-22 11:26:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:26:51,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:26:52,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:52,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:26:52,156 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2019-10-22 11:26:52,158 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-10-22 11:26:52,158 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:26:52,158 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:26:52,158 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:26:52,158 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-10-22 11:26:52,159 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2019-10-22 11:26:52,159 INFO L439 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (= (bvadd ULTIMATE.start_main_~input~0 (_ bv4294967291 32)) (_ bv0 32)) [2019-10-22 11:26:52,159 INFO L443 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2019-10-22 11:26:52,159 INFO L443 ceAbstractionStarter]: For program point L9(lines 9 15) no Hoare annotation was computed. [2019-10-22 11:26:52,159 INFO L443 ceAbstractionStarter]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2019-10-22 11:26:52,159 INFO L443 ceAbstractionStarter]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2019-10-22 11:26:52,160 INFO L446 ceAbstractionStarter]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2019-10-22 11:26:52,160 INFO L439 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (let ((.cse0 (= id_~x |id_#in~x|))) (and (or .cse0 (not (= (_ bv3 32) |id_#in~x|))) (or (not (= (_ bv5 32) |id_#in~x|)) .cse0) (or .cse0 (not (= (_ bv2 32) |id_#in~x|))) (not (= (_ bv0 32) |id_#in~x|)) (or .cse0 (not (= (_ bv1 32) |id_#in~x|))) (or .cse0 (not (= (_ bv4 32) |id_#in~x|))))) [2019-10-22 11:26:52,160 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:26:52,160 INFO L443 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2019-10-22 11:26:52,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:52 BoogieIcfgContainer [2019-10-22 11:26:52,164 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:52,164 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:52,164 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:52,164 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:52,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:42" (3/4) ... [2019-10-22 11:26:52,169 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:26:52,177 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-10-22 11:26:52,181 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:26:52,181 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:26:52,220 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_770eedba-2134-4d0d-bf87-2d9d18ffcb4c/bin/utaipan/witness.graphml [2019-10-22 11:26:52,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:52,222 INFO L168 Benchmark]: Toolchain (without parser) took 10503.53 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 266.3 MB). Free memory was 951.0 MB in the beginning and 878.6 MB in the end (delta: 72.4 MB). Peak memory consumption was 338.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,222 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:52,222 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.62 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.76 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:52,223 INFO L168 Benchmark]: Boogie Preprocessor took 73.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 940.2 MB in the beginning and 1.2 GB in the end (delta: -216.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,224 INFO L168 Benchmark]: RCFGBuilder took 169.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,224 INFO L168 Benchmark]: TraceAbstraction took 9906.49 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Free memory was 1.1 GB in the beginning and 886.5 MB in the end (delta: 252.0 MB). Peak memory consumption was 357.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,225 INFO L168 Benchmark]: Witness Printer took 56.23 ms. Allocated memory is still 1.3 GB. Free memory was 886.5 MB in the beginning and 878.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:52,227 INFO L335 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 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.62 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 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 32.76 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 940.2 MB in the beginning and 1.2 GB in the end (delta: -216.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 169.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9906.49 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Free memory was 1.1 GB in the beginning and 886.5 MB in the end (delta: 252.0 MB). Peak memory consumption was 357.9 MB. Max. memory is 11.5 GB. * Witness Printer took 56.23 ms. Allocated memory is still 1.3 GB. Free memory was 886.5 MB in the beginning and 878.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 9.8s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 103 SDtfs, 250 SDslu, 546 SDs, 0 SdLazy, 543 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 738 GetRequests, 628 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 51 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 20 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 712 ConstructedInterpolants, 0 QuantifiedInterpolants, 75252 SizeOfPredicates, 54 NumberOfNonLiveVariables, 518 ConjunctsInSsa, 136 ConjunctsInUnsatCore, 26 InterpolantComputations, 2 PerfectInterpolantSequences, 469/1176 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...