./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 440325a953e10d2173456ab8f8c8fc1313a6b958 ............................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 440325a953e10d2173456ab8f8c8fc1313a6b958 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 11:05:58,436 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:05:58,437 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:05:58,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:05:58,445 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:05:58,446 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:05:58,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:05:58,447 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:05:58,448 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:05:58,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:05:58,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:05:58,451 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:05:58,452 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:05:58,452 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:05:58,453 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:05:58,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:05:58,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:05:58,455 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:05:58,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:05:58,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:05:58,458 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:05:58,459 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:05:58,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:05:58,461 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:05:58,462 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:05:58,462 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:05:58,463 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:05:58,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:05:58,464 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:05:58,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:05:58,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:05:58,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:05:58,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:05:58,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:05:58,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:05:58,466 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:05:58,466 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-11-18 11:05:58,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:05:58,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:05:58,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:05:58,478 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:05:58,478 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:05:58,478 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:05:58,479 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:05:58,480 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:05:58,480 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:05:58,480 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:05:58,480 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:05:58,480 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:05:58,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:05:58,481 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:05:58,482 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:05:58,482 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:05:58,482 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:05:58,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:05:58,483 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 440325a953e10d2173456ab8f8c8fc1313a6b958 [2018-11-18 11:05:58,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:05:58,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:05:58,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:05:58,523 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:05:58,523 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:05:58,524 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c [2018-11-18 11:05:58,569 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/354bccae7/0e1ab22dac1e496b9cb21c6332345631/FLAG3f6cdf416 [2018-11-18 11:05:58,921 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:05:58,921 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c [2018-11-18 11:05:58,927 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/354bccae7/0e1ab22dac1e496b9cb21c6332345631/FLAG3f6cdf416 [2018-11-18 11:05:58,938 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/354bccae7/0e1ab22dac1e496b9cb21c6332345631 [2018-11-18 11:05:58,941 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:05:58,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:05:58,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:05:58,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:05:58,945 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:05:58,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:05:58" (1/1) ... [2018-11-18 11:05:58,948 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de76a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:58, skipping insertion in model container [2018-11-18 11:05:58,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:05:58" (1/1) ... [2018-11-18 11:05:58,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:05:58,971 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:05:59,103 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:05:59,113 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:05:59,127 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:05:59,139 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:05:59,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59 WrapperNode [2018-11-18 11:05:59,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:05:59,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:05:59,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:05:59,140 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:05:59,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:05:59,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:05:59,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:05:59,159 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:05:59,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... [2018-11-18 11:05:59,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:05:59,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:05:59,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:05:59,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:05:59,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:05:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:05:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:05:59,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:05:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:05:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2018-11-18 11:05:59,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2018-11-18 11:05:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2018-11-18 11:05:59,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2018-11-18 11:05:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2018-11-18 11:05:59,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2018-11-18 11:05:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:05:59,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:05:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:05:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:05:59,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:05:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-18 11:05:59,273 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-18 11:05:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:05:59,572 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:05:59,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:05:59 BoogieIcfgContainer [2018-11-18 11:05:59,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:05:59,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:05:59,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:05:59,576 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:05:59,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:05:58" (1/3) ... [2018-11-18 11:05:59,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2cc2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:05:59, skipping insertion in model container [2018-11-18 11:05:59,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:05:59" (2/3) ... [2018-11-18 11:05:59,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2cc2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:05:59, skipping insertion in model container [2018-11-18 11:05:59,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:05:59" (3/3) ... [2018-11-18 11:05:59,579 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4_false-valid-deref.c [2018-11-18 11:05:59,585 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:05:59,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-11-18 11:05:59,602 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2018-11-18 11:05:59,623 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:05:59,623 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 11:05:59,623 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:05:59,623 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:05:59,624 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:05:59,624 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:05:59,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:05:59,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:05:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-11-18 11:05:59,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 11:05:59,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:05:59,646 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:05:59,648 INFO L423 AbstractCegarLoop]: === Iteration 1 === [getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 11:05:59,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:05:59,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685820, now seen corresponding path program 1 times [2018-11-18 11:05:59,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:05:59,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:05:59,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:05:59,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:05:59,694 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:05:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:05:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:05:59,821 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:05:59,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:05:59,822 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:05:59,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:05:59,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:05:59,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:05:59,837 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 3 states. [2018-11-18 11:05:59,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:05:59,913 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-11-18 11:05:59,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:05:59,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 11:05:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:05:59,921 INFO L225 Difference]: With dead ends: 74 [2018-11-18 11:05:59,921 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 11:05:59,923 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:05:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 11:05:59,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-11-18 11:05:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 11:05:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-11-18 11:05:59,954 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 13 [2018-11-18 11:05:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:05:59,954 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-11-18 11:05:59,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:05:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-11-18 11:05:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 11:05:59,955 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:05:59,955 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:05:59,955 INFO L423 AbstractCegarLoop]: === Iteration 2 === [getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 11:05:59,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:05:59,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685819, now seen corresponding path program 1 times [2018-11-18 11:05:59,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:05:59,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:05:59,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:05:59,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:05:59,957 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:05:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:00,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:06:00,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:06:00,053 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:06:00,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:06:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:06:00,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:00,054 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 4 states. [2018-11-18 11:06:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:00,128 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-11-18 11:06:00,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:06:00,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 11:06:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:00,129 INFO L225 Difference]: With dead ends: 75 [2018-11-18 11:06:00,129 INFO L226 Difference]: Without dead ends: 75 [2018-11-18 11:06:00,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-18 11:06:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2018-11-18 11:06:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-18 11:06:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2018-11-18 11:06:00,137 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 13 [2018-11-18 11:06:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:00,137 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2018-11-18 11:06:00,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:06:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2018-11-18 11:06:00,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:06:00,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:00,138 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:00,138 INFO L423 AbstractCegarLoop]: === Iteration 3 === [getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 11:06:00,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:00,138 INFO L82 PathProgramCache]: Analyzing trace with hash -762851940, now seen corresponding path program 1 times [2018-11-18 11:06:00,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:06:00,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:06:00,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:00,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:06:00,142 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:06:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:00,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:00,289 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 11:06:00,290 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-11-18 11:06:00,292 INFO L202 CegarAbsIntRunner]: [0], [1], [103], [107], [112], [113], [115], [117], [123], [125], [127], [129], [130], [131], [133] [2018-11-18 11:06:00,317 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:06:00,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:06:00,393 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) Caused by: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:209) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:291) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.AssumptionBuilder.constructBoogieAssumeStatement(AssumptionBuilder.java:75) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.getCachedCodeBlock(TermConjunctEvaluator.java:273) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:296) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) 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:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) 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:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-18 11:06:00,396 INFO L168 Benchmark]: Toolchain (without parser) took 1454.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -88.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 11.5 GB. [2018-11-18 11:06:00,398 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:06:00,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.47 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 946.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:06:00,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.48 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:06:00,399 INFO L168 Benchmark]: Boogie Preprocessor took 65.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:06:00,400 INFO L168 Benchmark]: RCFGBuilder took 347.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-11-18 11:06:00,400 INFO L168 Benchmark]: TraceAbstraction took 822.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:06:00,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.47 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 946.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.48 ms. Allocated memory is still 1.0 GB. Free memory is still 946.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 65.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 347.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 822.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.5 MB). Peak memory consumption was 73.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 11:06:02,009 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:06:02,010 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:06:02,019 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:06:02,019 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:06:02,020 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:06:02,021 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:06:02,022 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:06:02,023 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:06:02,024 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:06:02,025 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:06:02,025 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:06:02,026 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:06:02,027 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:06:02,028 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:06:02,029 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:06:02,029 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:06:02,032 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:06:02,033 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:06:02,034 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:06:02,036 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:06:02,037 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:06:02,039 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:06:02,039 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:06:02,039 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:06:02,040 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:06:02,041 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:06:02,042 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:06:02,042 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:06:02,044 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:06:02,044 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:06:02,045 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:06:02,045 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:06:02,045 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:06:02,046 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:06:02,047 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:06:02,047 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-11-18 11:06:02,060 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:06:02,061 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:06:02,061 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:06:02,061 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:06:02,062 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:06:02,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:06:02,062 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:06:02,062 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:06:02,062 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:06:02,062 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:06:02,063 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:06:02,063 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:06:02,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:06:02,064 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 11:06:02,064 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:06:02,064 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:06:02,064 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 11:06:02,064 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:06:02,064 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 11:06:02,065 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:06:02,066 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:06:02,066 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 11:06:02,066 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:06:02,067 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 11:06:02,067 INFO L133 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_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 440325a953e10d2173456ab8f8c8fc1313a6b958 [2018-11-18 11:06:02,101 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:06:02,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:06:02,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:06:02,113 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:06:02,114 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:06:02,114 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c [2018-11-18 11:06:02,156 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/b33c17cef/bc99090af9b9454eafe754426a80a279/FLAG4cc11e64d [2018-11-18 11:06:02,498 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:06:02,498 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/sv-benchmarks/c/memsafety-ext3/getNumbers4_false-valid-deref.c [2018-11-18 11:06:02,503 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/b33c17cef/bc99090af9b9454eafe754426a80a279/FLAG4cc11e64d [2018-11-18 11:06:02,926 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/data/b33c17cef/bc99090af9b9454eafe754426a80a279 [2018-11-18 11:06:02,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:06:02,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:06:02,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:06:02,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:06:02,933 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:06:02,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:06:02" (1/1) ... [2018-11-18 11:06:02,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64554081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:02, skipping insertion in model container [2018-11-18 11:06:02,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:06:02" (1/1) ... [2018-11-18 11:06:02,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:06:02,964 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:06:03,122 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:06:03,134 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:06:03,154 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:06:03,169 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:06:03,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03 WrapperNode [2018-11-18 11:06:03,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:06:03,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:06:03,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:06:03,170 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:06:03,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:06:03,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:06:03,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:06:03,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:06:03,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... [2018-11-18 11:06:03,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:06:03,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:06:03,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:06:03,224 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:06:03,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:06:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2018-11-18 11:06:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2018-11-18 11:06:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:06:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:06:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:06:03,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:06:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:06:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 11:06:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2018-11-18 11:06:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2018-11-18 11:06:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2018-11-18 11:06:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2018-11-18 11:06:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:06:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:06:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-18 11:06:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-18 11:06:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:06:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 11:06:03,700 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:06:03,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:06:03 BoogieIcfgContainer [2018-11-18 11:06:03,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:06:03,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:06:03,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:06:03,703 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:06:03,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:06:02" (1/3) ... [2018-11-18 11:06:03,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f1eb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:06:03, skipping insertion in model container [2018-11-18 11:06:03,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:06:03" (2/3) ... [2018-11-18 11:06:03,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f1eb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:06:03, skipping insertion in model container [2018-11-18 11:06:03,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:06:03" (3/3) ... [2018-11-18 11:06:03,705 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4_false-valid-deref.c [2018-11-18 11:06:03,712 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:06:03,718 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-11-18 11:06:03,729 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2018-11-18 11:06:03,750 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:06:03,750 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:06:03,750 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 11:06:03,750 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:06:03,751 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:06:03,751 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:06:03,751 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:06:03,751 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:06:03,751 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:06:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-11-18 11:06:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 11:06:03,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:03,774 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:03,776 INFO L423 AbstractCegarLoop]: === Iteration 1 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:03,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685820, now seen corresponding path program 1 times [2018-11-18 11:06:03,784 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:03,784 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:03,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:03,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:03,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-11-18 11:06:03,924 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:03,958 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2018-11-18 11:06:04,023 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,028 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,030 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 42 [2018-11-18 11:06:04,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2018-11-18 11:06:04,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 29 [2018-11-18 11:06:04,075 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:04,091 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:04,112 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:04,174 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,179 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,193 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,209 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 52 [2018-11-18 11:06:04,247 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 47 [2018-11-18 11:06:04,261 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,270 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:04,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 50 [2018-11-18 11:06:04,284 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-18 11:06:04,421 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 40 [2018-11-18 11:06:04,422 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:04,513 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:04,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 45 [2018-11-18 11:06:04,656 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 33 [2018-11-18 11:06:04,657 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:04,682 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:04,795 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 11:06:04,891 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:06:04,968 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:06:05,036 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 5 xjuncts. [2018-11-18 11:06:05,036 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 4 variables, input treesize:33, output treesize:160 [2018-11-18 11:06:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:05,130 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-11-18 11:06:05,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:06:05,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:06:05,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:06:05,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:06:05,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:06:05,153 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 3 states. [2018-11-18 11:06:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:05,266 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-11-18 11:06:05,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:06:05,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 11:06:05,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:05,275 INFO L225 Difference]: With dead ends: 74 [2018-11-18 11:06:05,275 INFO L226 Difference]: Without dead ends: 71 [2018-11-18 11:06:05,277 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:06:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-11-18 11:06:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-11-18 11:06:05,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 11:06:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-11-18 11:06:05,306 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 13 [2018-11-18 11:06:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:05,306 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-11-18 11:06:05,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:06:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-11-18 11:06:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 11:06:05,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:05,307 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:05,308 INFO L423 AbstractCegarLoop]: === Iteration 2 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:05,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:05,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685819, now seen corresponding path program 1 times [2018-11-18 11:06:05,308 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:05,309 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:05,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:05,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:05,373 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:05,383 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,396 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:05,409 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,411 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,414 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,417 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:05,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2018-11-18 11:06:05,439 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 11:06:05,489 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:05,549 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:05,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:06:05,557 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:05,568 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:05,599 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:05,628 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:05,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-11-18 11:06:05,684 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 23 [2018-11-18 11:06:05,713 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,714 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,715 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2018-11-18 11:06:05,716 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:05,738 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,739 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,741 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:05,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2018-11-18 11:06:05,742 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:05,756 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:05,763 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:05,810 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:05,810 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:33, output treesize:83 [2018-11-18 11:06:05,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:05,882 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:06:05,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:06:05,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:06:05,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:06:05,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:06:05,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:05,887 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 4 states. [2018-11-18 11:06:06,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:06,095 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-11-18 11:06:06,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:06:06,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 11:06:06,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:06,097 INFO L225 Difference]: With dead ends: 75 [2018-11-18 11:06:06,098 INFO L226 Difference]: Without dead ends: 75 [2018-11-18 11:06:06,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-18 11:06:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2018-11-18 11:06:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-18 11:06:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2018-11-18 11:06:06,106 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 13 [2018-11-18 11:06:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:06,106 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2018-11-18 11:06:06,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:06:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2018-11-18 11:06:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:06:06,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:06,107 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:06,107 INFO L423 AbstractCegarLoop]: === Iteration 3 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:06,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:06,108 INFO L82 PathProgramCache]: Analyzing trace with hash -762851940, now seen corresponding path program 1 times [2018-11-18 11:06:06,108 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:06,108 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:06,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:06,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:06,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:06,203 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:06,224 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,225 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,226 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,227 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:06,250 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2018-11-18 11:06:06,250 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 11:06:06,296 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:06,355 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:06,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:06:06,367 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:06,378 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:06,408 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:06,439 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:06,481 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-11-18 11:06:06,491 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,497 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 23 [2018-11-18 11:06:06,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,521 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,523 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,524 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 13 [2018-11-18 11:06:06,524 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:06,546 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,547 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:06,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2018-11-18 11:06:06,548 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:06,561 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:06,568 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:06,609 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:06,610 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:33, output treesize:83 [2018-11-18 11:06:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:06,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:07,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:07,128 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:07,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:07,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:07,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:07,186 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:07,219 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,227 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,230 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,232 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,234 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:07,245 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,247 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,250 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:06:07,252 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,283 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,321 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:07,329 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,330 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:06:07,332 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,346 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,368 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:07,392 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:07,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:06:07,450 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,458 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:06:07,484 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,485 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,490 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,506 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 51 [2018-11-18 11:06:07,568 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,569 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,572 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,573 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,576 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,577 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:07,578 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 29 [2018-11-18 11:06:07,578 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,615 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,616 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,620 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:07,621 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 25 [2018-11-18 11:06:07,621 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,646 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,673 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,675 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 38 [2018-11-18 11:06:07,706 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,708 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,710 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,711 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,711 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:07,712 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-11-18 11:06:07,713 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,723 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,738 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,745 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:07,776 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-11-18 11:06:07,776 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 5 variables, input treesize:50, output treesize:68 [2018-11-18 11:06:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:08,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:08,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:06:08,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5] total 13 [2018-11-18 11:06:08,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 11:06:08,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 11:06:08,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:06:08,601 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 14 states. [2018-11-18 11:06:09,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:09,332 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2018-11-18 11:06:09,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:06:09,333 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-11-18 11:06:09,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:09,335 INFO L225 Difference]: With dead ends: 92 [2018-11-18 11:06:09,335 INFO L226 Difference]: Without dead ends: 92 [2018-11-18 11:06:09,336 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:06:09,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-18 11:06:09,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2018-11-18 11:06:09,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-18 11:06:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-11-18 11:06:09,342 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 17 [2018-11-18 11:06:09,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:09,342 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-11-18 11:06:09,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 11:06:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-11-18 11:06:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:06:09,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:09,343 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:09,343 INFO L423 AbstractCegarLoop]: === Iteration 4 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:09,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:09,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1667857317, now seen corresponding path program 1 times [2018-11-18 11:06:09,344 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:09,344 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:09,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:09,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:09,429 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:09,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:09,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:09,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:09,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 11:06:09,548 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:06:09,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:06:09,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2018-11-18 11:06:09,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 11:06:09,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 11:06:09,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:06:09,568 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 12 states. [2018-11-18 11:06:10,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:10,019 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2018-11-18 11:06:10,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 11:06:10,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-11-18 11:06:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:10,021 INFO L225 Difference]: With dead ends: 93 [2018-11-18 11:06:10,021 INFO L226 Difference]: Without dead ends: 93 [2018-11-18 11:06:10,021 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2018-11-18 11:06:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-18 11:06:10,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2018-11-18 11:06:10,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-18 11:06:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2018-11-18 11:06:10,032 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 27 [2018-11-18 11:06:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:10,033 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2018-11-18 11:06:10,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 11:06:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2018-11-18 11:06:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 11:06:10,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:10,034 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:10,034 INFO L423 AbstractCegarLoop]: === Iteration 5 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:10,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:10,034 INFO L82 PathProgramCache]: Analyzing trace with hash 350108001, now seen corresponding path program 2 times [2018-11-18 11:06:10,034 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:10,034 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:10,048 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:06:10,150 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:06:10,150 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:10,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:10,169 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:10,180 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:10,212 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,214 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,217 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,221 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,222 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:10,250 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2018-11-18 11:06:10,251 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-11-18 11:06:10,293 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:10,344 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,345 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:10,351 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:06:10,351 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:10,362 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:10,392 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:10,421 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:10,467 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-11-18 11:06:10,477 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 23 [2018-11-18 11:06:10,504 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,505 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,507 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2018-11-18 11:06:10,508 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:10,530 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,532 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:10,532 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2018-11-18 11:06:10,533 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:10,546 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:10,553 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:10,598 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:10,598 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 5 variables, input treesize:33, output treesize:83 [2018-11-18 11:06:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:10,789 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:11,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:11,806 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:11,813 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:06:11,847 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:06:11,847 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:11,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:11,857 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:06:11,865 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:11,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:06:11,903 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:11,907 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:11,908 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 41 [2018-11-18 11:06:11,946 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:11,948 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:11,951 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:11,955 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:11,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 21 [2018-11-18 11:06:11,956 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:11,993 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,068 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,072 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,093 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,109 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 51 [2018-11-18 11:06:12,194 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,197 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,201 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,201 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:12,202 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32 [2018-11-18 11:06:12,203 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,271 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,273 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,279 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,281 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,287 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,288 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:12,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2018-11-18 11:06:12,289 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,352 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,402 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,425 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,463 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:12,471 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,480 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:12,486 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,488 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:12,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:12,495 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:06:12,496 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,518 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:12,549 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:06:12,549 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,564 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:12,586 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:12,609 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:12,646 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-11-18 11:06:12,646 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 5 variables, input treesize:50, output treesize:68 [2018-11-18 11:06:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:15,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:16,711 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:06:16,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7, 9] total 27 [2018-11-18 11:06:16,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-18 11:06:16,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-18 11:06:16,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2018-11-18 11:06:16,713 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 28 states. [2018-11-18 11:06:17,622 WARN L180 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 38 [2018-11-18 11:06:17,962 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-11-18 11:06:18,296 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-11-18 11:06:19,574 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2018-11-18 11:06:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:19,936 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2018-11-18 11:06:19,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 11:06:19,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 29 [2018-11-18 11:06:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:19,939 INFO L225 Difference]: With dead ends: 121 [2018-11-18 11:06:19,939 INFO L226 Difference]: Without dead ends: 121 [2018-11-18 11:06:19,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 78 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=331, Invalid=791, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 11:06:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-11-18 11:06:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 109. [2018-11-18 11:06:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-18 11:06:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-11-18 11:06:19,948 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 29 [2018-11-18 11:06:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:19,948 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-11-18 11:06:19,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-18 11:06:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-11-18 11:06:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 11:06:19,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:19,950 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:19,950 INFO L423 AbstractCegarLoop]: === Iteration 6 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:19,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:19,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2044105726, now seen corresponding path program 1 times [2018-11-18 11:06:19,951 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:19,951 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:19,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:06:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:20,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:20,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:20,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:20,240 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:20,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:20,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:20,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:06:20,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:06:20,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,352 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,353 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 41 [2018-11-18 11:06:20,384 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,385 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,388 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,389 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:20,390 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2018-11-18 11:06:20,390 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,417 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,490 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,517 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 51 [2018-11-18 11:06:20,603 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,606 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,610 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,613 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,616 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 32 [2018-11-18 11:06:20,617 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,689 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,698 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,700 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,702 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,709 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,711 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,718 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2018-11-18 11:06:20,720 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,787 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,835 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,859 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,899 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:20,909 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,922 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:20,928 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,930 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:20,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:20,936 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:06:20,937 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,956 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:20,988 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:20,993 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:06:20,994 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:21,013 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:21,040 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:21,060 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:21,101 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-11-18 11:06:21,102 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 5 variables, input treesize:50, output treesize:68 [2018-11-18 11:06:21,645 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-18 11:06:21,645 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-18 11:06:22,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-11-18 11:06:22,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9, 6] total 27 [2018-11-18 11:06:22,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-18 11:06:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-18 11:06:22,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2018-11-18 11:06:22,728 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 27 states. [2018-11-18 11:06:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:25,444 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2018-11-18 11:06:25,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 11:06:25,445 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 43 [2018-11-18 11:06:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:25,446 INFO L225 Difference]: With dead ends: 123 [2018-11-18 11:06:25,446 INFO L226 Difference]: Without dead ends: 123 [2018-11-18 11:06:25,447 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 11:06:25,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-11-18 11:06:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2018-11-18 11:06:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-11-18 11:06:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2018-11-18 11:06:25,454 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 43 [2018-11-18 11:06:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:25,454 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2018-11-18 11:06:25,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-18 11:06:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2018-11-18 11:06:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 11:06:25,455 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:25,455 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:25,455 INFO L423 AbstractCegarLoop]: === Iteration 7 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:25,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash -563031445, now seen corresponding path program 3 times [2018-11-18 11:06:25,456 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:25,456 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:25,471 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 11:06:26,650 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 11:06:26,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:26,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:26,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:28,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:28,257 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:28,263 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:06:29,585 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 11:06:29,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:29,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:29,658 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 10 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:06:30,492 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:06:30,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 15, 18] total 38 [2018-11-18 11:06:30,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-18 11:06:30,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-18 11:06:30,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=1145, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 11:06:30,494 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 38 states. [2018-11-18 11:06:31,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:31,502 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2018-11-18 11:06:31,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 11:06:31,503 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 53 [2018-11-18 11:06:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:31,504 INFO L225 Difference]: With dead ends: 116 [2018-11-18 11:06:31,505 INFO L226 Difference]: Without dead ends: 116 [2018-11-18 11:06:31,505 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=288, Invalid=1194, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 11:06:31,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-18 11:06:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-11-18 11:06:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-11-18 11:06:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2018-11-18 11:06:31,510 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 53 [2018-11-18 11:06:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:31,510 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2018-11-18 11:06:31,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-18 11:06:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2018-11-18 11:06:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 11:06:31,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:31,512 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:31,512 INFO L423 AbstractCegarLoop]: === Iteration 8 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:31,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:31,512 INFO L82 PathProgramCache]: Analyzing trace with hash 2056218446, now seen corresponding path program 1 times [2018-11-18 11:06:31,513 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:31,513 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:31,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:06:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:31,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:31,688 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-11-18 11:06:31,704 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,714 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 11:06:31,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2018-11-18 11:06:31,724 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-11-18 11:06:31,733 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-11-18 11:06:31,733 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:31,741 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:31,749 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:31,777 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,782 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,791 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 33 [2018-11-18 11:06:31,797 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2018-11-18 11:06:31,804 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2018-11-18 11:06:31,804 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:31,815 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:31,846 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,849 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,853 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2018-11-18 11:06:31,866 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 40 [2018-11-18 11:06:31,867 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:31,900 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,903 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,905 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,908 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:31,914 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 42 [2018-11-18 11:06:31,915 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-18 11:06:31,952 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:31,989 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 11:06:32,030 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:06:32,068 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:06:32,115 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 8 dim-0 vars, and 5 xjuncts. [2018-11-18 11:06:32,115 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 3 variables, input treesize:18, output treesize:121 [2018-11-18 11:06:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:32,169 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:06:32,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:06:32,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:06:32,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:06:32,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:06:32,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:32,172 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand 4 states. [2018-11-18 11:06:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:32,254 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2018-11-18 11:06:32,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:06:32,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-18 11:06:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:32,255 INFO L225 Difference]: With dead ends: 115 [2018-11-18 11:06:32,255 INFO L226 Difference]: Without dead ends: 115 [2018-11-18 11:06:32,255 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-11-18 11:06:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-11-18 11:06:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-18 11:06:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2018-11-18 11:06:32,258 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 60 [2018-11-18 11:06:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:32,259 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2018-11-18 11:06:32,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:06:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2018-11-18 11:06:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 11:06:32,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:32,260 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:32,260 INFO L423 AbstractCegarLoop]: === Iteration 9 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:32,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:32,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2056218447, now seen corresponding path program 1 times [2018-11-18 11:06:32,261 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:32,261 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:32,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:32,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:32,448 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:06:32,455 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:06:32,474 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-11-18 11:06:32,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,497 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,500 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,500 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2018-11-18 11:06:32,501 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,521 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,577 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,591 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:06:32,648 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,650 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,652 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,652 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2018-11-18 11:06:32,653 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,735 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,737 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,740 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,742 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,749 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,750 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-18 11:06:32,750 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,814 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,857 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,880 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,905 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:32,910 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,918 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:32,923 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:06:32,928 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:06:32,928 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,940 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:32,979 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,983 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:32,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:06:33,004 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,008 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 49 [2018-11-18 11:06:33,009 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:33,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:06:33,052 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:33,077 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:33,110 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:33,142 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:33,199 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:33,199 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:06:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:33,324 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:06:33,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:06:33,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:06:33,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:06:33,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:06:33,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:33,326 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand 4 states. [2018-11-18 11:06:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:33,569 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2018-11-18 11:06:33,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:06:33,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-18 11:06:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:33,572 INFO L225 Difference]: With dead ends: 115 [2018-11-18 11:06:33,572 INFO L226 Difference]: Without dead ends: 115 [2018-11-18 11:06:33,572 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:06:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-11-18 11:06:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-11-18 11:06:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-18 11:06:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2018-11-18 11:06:33,576 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 60 [2018-11-18 11:06:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:33,576 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2018-11-18 11:06:33,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:06:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2018-11-18 11:06:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 11:06:33,578 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:33,578 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:33,578 INFO L423 AbstractCegarLoop]: === Iteration 10 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:33,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:33,579 INFO L82 PathProgramCache]: Analyzing trace with hash -334329447, now seen corresponding path program 1 times [2018-11-18 11:06:33,579 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:33,579 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:33,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:33,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:33,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:06:33,803 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:06:33,819 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-11-18 11:06:33,847 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,848 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,850 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2018-11-18 11:06:33,851 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:33,874 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:33,940 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,952 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:33,960 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:06:34,016 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,018 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,021 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,023 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,033 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:06:34,034 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,110 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,114 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,120 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,121 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2018-11-18 11:06:34,121 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,169 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,206 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,229 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:34,260 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:34,284 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:06:34,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:06:34,290 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,302 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,348 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,355 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,367 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:06:34,371 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:06:34,372 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,420 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,421 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,425 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:34,425 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 49 [2018-11-18 11:06:34,426 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:34,458 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:34,492 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:34,522 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:34,573 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:34,573 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:06:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:34,711 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:35,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:35,050 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:35,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:35,121 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:35,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:06:35,132 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,140 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:06:35,148 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,161 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:06:35,220 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,223 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,225 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,227 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,236 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,236 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:06:35,237 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,324 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,326 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,327 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2018-11-18 11:06:35,328 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,371 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2018-11-18 11:06:35,454 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,458 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,462 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,463 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2018-11-18 11:06:35,463 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,493 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,537 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,561 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,597 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:35,606 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:35,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:06:35,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:06:35,631 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,643 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,688 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,697 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:06:35,724 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,728 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:35,729 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 49 [2018-11-18 11:06:35,729 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,783 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:06:35,783 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:35,841 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:35,913 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:35,951 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:06:36,011 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:36,012 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:39, output treesize:98 [2018-11-18 11:06:36,412 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:36,412 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:37,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:06:37,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7, 8] total 19 [2018-11-18 11:06:37,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 11:06:37,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 11:06:37,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-11-18 11:06:37,392 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 20 states. [2018-11-18 11:06:37,917 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-11-18 11:06:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:38,538 INFO L93 Difference]: Finished difference Result 136 states and 141 transitions. [2018-11-18 11:06:38,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:06:38,539 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2018-11-18 11:06:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:38,540 INFO L225 Difference]: With dead ends: 136 [2018-11-18 11:06:38,541 INFO L226 Difference]: Without dead ends: 136 [2018-11-18 11:06:38,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 237 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-11-18 11:06:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-11-18 11:06:38,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2018-11-18 11:06:38,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-11-18 11:06:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2018-11-18 11:06:38,544 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 66 [2018-11-18 11:06:38,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:38,545 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2018-11-18 11:06:38,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 11:06:38,545 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2018-11-18 11:06:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-18 11:06:38,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:38,548 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:38,548 INFO L423 AbstractCegarLoop]: === Iteration 11 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:38,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:38,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1689760566, now seen corresponding path program 1 times [2018-11-18 11:06:38,548 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:38,549 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:38,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:38,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 11:06:39,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:40,188 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 11:06:40,189 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:06:40,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-11-18 11:06:40,260 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:06:40,330 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2018-11-18 11:06:40,330 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:06:40,386 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-18 11:06:40,386 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 11:06:40,596 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-11-18 11:06:40,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:40,599 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:40,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:40,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:40,667 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:40,676 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:40,699 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,700 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:40,708 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,709 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,710 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:06:40,710 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:40,725 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:40,758 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,760 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,762 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,764 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,764 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:40,775 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,776 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,778 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,779 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:06:40,779 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:40,800 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:40,826 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:40,847 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:40,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:06:40,897 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:06:40,932 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,934 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,935 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 41 [2018-11-18 11:06:40,972 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,973 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,974 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:40,975 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:40,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2018-11-18 11:06:40,976 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:40,988 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:41,015 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,016 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,023 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,038 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 51 [2018-11-18 11:06:41,098 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,099 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,100 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,100 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:41,101 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 32 [2018-11-18 11:06:41,101 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:41,133 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,136 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,137 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,138 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,140 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,141 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,143 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:41,144 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 29 [2018-11-18 11:06:41,144 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:41,168 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:41,184 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:41,192 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:41,227 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-11-18 11:06:41,227 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 5 variables, input treesize:53, output treesize:74 [2018-11-18 11:06:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:42,316 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:44,037 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-11-18 11:06:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:44,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 11:06:44,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 9] total 32 [2018-11-18 11:06:44,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 11:06:44,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 11:06:44,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 11:06:44,177 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 33 states. [2018-11-18 11:06:48,327 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-11-18 11:06:49,141 WARN L180 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-11-18 11:06:49,946 WARN L180 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-11-18 11:06:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:51,034 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-11-18 11:06:51,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 11:06:51,035 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 71 [2018-11-18 11:06:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:51,036 INFO L225 Difference]: With dead ends: 149 [2018-11-18 11:06:51,036 INFO L226 Difference]: Without dead ends: 149 [2018-11-18 11:06:51,036 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 187 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=358, Invalid=2398, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 11:06:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-11-18 11:06:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 139. [2018-11-18 11:06:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-11-18 11:06:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2018-11-18 11:06:51,039 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 71 [2018-11-18 11:06:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:51,039 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 146 transitions. [2018-11-18 11:06:51,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 11:06:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 146 transitions. [2018-11-18 11:06:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-18 11:06:51,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:51,041 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:51,041 INFO L423 AbstractCegarLoop]: === Iteration 12 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:51,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:51,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1387430427, now seen corresponding path program 1 times [2018-11-18 11:06:51,041 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:51,041 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:51,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:51,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:51,240 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:51,240 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:06:51,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:51,308 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:51,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:06:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:06:51,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:51,412 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:51,412 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:51,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2018-11-18 11:06:51,413 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:51,419 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:06:51,419 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-11-18 11:06:51,442 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-18 11:06:51,442 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:06:51,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:06:51,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 14 [2018-11-18 11:06:51,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 11:06:51,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 11:06:51,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:06:51,463 INFO L87 Difference]: Start difference. First operand 139 states and 146 transitions. Second operand 14 states. [2018-11-18 11:06:52,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:52,107 INFO L93 Difference]: Finished difference Result 153 states and 156 transitions. [2018-11-18 11:06:52,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 11:06:52,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2018-11-18 11:06:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:52,108 INFO L225 Difference]: With dead ends: 153 [2018-11-18 11:06:52,108 INFO L226 Difference]: Without dead ends: 153 [2018-11-18 11:06:52,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:06:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-11-18 11:06:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 149. [2018-11-18 11:06:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-11-18 11:06:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 156 transitions. [2018-11-18 11:06:52,112 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 156 transitions. Word has length 83 [2018-11-18 11:06:52,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:52,113 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 156 transitions. [2018-11-18 11:06:52,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 11:06:52,113 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 156 transitions. [2018-11-18 11:06:52,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-18 11:06:52,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:52,114 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:52,114 INFO L423 AbstractCegarLoop]: === Iteration 13 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:52,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:52,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1233112201, now seen corresponding path program 2 times [2018-11-18 11:06:52,115 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:52,115 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:52,133 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:06:52,189 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 11:06:52,189 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:52,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:52,206 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:52,215 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,229 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:52,234 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,234 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:52,241 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,242 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,243 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:06:52,243 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,259 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,297 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,298 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,300 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,301 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,302 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:52,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,311 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,313 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,314 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:06:52,314 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,334 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,356 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:52,378 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:52,420 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:06:52,426 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:06:52,460 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,462 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,462 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 41 [2018-11-18 11:06:52,488 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,490 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,492 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,493 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,494 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-11-18 11:06:52,495 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,507 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,534 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,536 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,540 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 51 [2018-11-18 11:06:52,617 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,621 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,622 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,624 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,624 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:52,625 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-11-18 11:06:52,625 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,662 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,664 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,664 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:52,665 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:06:52,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2018-11-18 11:06:52,666 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,687 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,703 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,712 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:52,745 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-11-18 11:06:52,746 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 4 variables, input treesize:53, output treesize:74 [2018-11-18 11:06:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-18 11:06:53,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:53,694 WARN L180 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 11:06:54,636 WARN L180 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 11:06:56,253 WARN L180 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 11:06:56,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:06:56,255 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:06:56,262 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:06:56,283 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 11:06:56,284 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:56,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:56,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:06:56,302 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,311 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:56,317 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,318 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,319 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,320 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:06:56,327 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,328 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,330 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:06:56,331 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,352 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,384 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,384 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:06:56,389 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,390 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:06:56,391 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,408 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,433 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:56,462 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:06:56,500 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:06:56,506 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:06:56,545 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,547 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 41 [2018-11-18 11:06:56,577 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,579 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,580 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,581 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,582 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,583 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-11-18 11:06:56,583 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,595 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,621 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,622 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,626 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 51 [2018-11-18 11:06:56,699 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,700 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,701 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,702 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,703 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,703 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 32 [2018-11-18 11:06:56,704 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,737 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,739 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,740 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,741 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,743 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,744 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,747 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:06:56,748 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 29 [2018-11-18 11:06:56,748 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,788 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,806 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,814 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:06:56,852 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-11-18 11:06:56,852 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 4 variables, input treesize:53, output treesize:74 [2018-11-18 11:06:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-18 11:06:56,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:06:57,150 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:06:57,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 11:06:57,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:06:57,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:06:57,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:06:57,151 INFO L87 Difference]: Start difference. First operand 149 states and 156 transitions. Second operand 7 states. [2018-11-18 11:06:57,508 WARN L180 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-11-18 11:06:57,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:06:57,963 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2018-11-18 11:06:57,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:06:57,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2018-11-18 11:06:57,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:06:57,965 INFO L225 Difference]: With dead ends: 148 [2018-11-18 11:06:57,965 INFO L226 Difference]: Without dead ends: 148 [2018-11-18 11:06:57,965 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 209 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:06:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-11-18 11:06:57,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2018-11-18 11:06:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-11-18 11:06:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 152 transitions. [2018-11-18 11:06:57,969 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 152 transitions. Word has length 84 [2018-11-18 11:06:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:06:57,969 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 152 transitions. [2018-11-18 11:06:57,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:06:57,969 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 152 transitions. [2018-11-18 11:06:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-18 11:06:57,970 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:06:57,971 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:06:57,971 INFO L423 AbstractCegarLoop]: === Iteration 14 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:06:57,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:06:57,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1289869218, now seen corresponding path program 2 times [2018-11-18 11:06:57,971 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:06:57,972 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:06:57,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:06:58,219 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:06:58,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:06:58,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:06:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 298 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 11:06:58,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:07:01,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-11-18 11:07:01,241 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:07:01,324 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-11-18 11:07:01,325 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:07:01,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-11-18 11:07:01,394 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:07:01,447 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-18 11:07:01,447 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 11:07:01,763 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-11-18 11:07:01,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:07:01,766 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:07:01,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:07:01,855 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:07:01,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:07:01,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:07:01,871 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:07:01,881 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:01,889 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:07:01,924 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:01,926 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:01,949 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:01,966 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 51 [2018-11-18 11:07:02,039 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,041 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,048 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,051 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,057 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,057 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:07:02,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-11-18 11:07:02,058 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,137 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,146 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,147 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,150 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2018-11-18 11:07:02,154 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,211 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,286 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,292 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 38 [2018-11-18 11:07:02,320 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,328 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,331 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,333 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,337 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,338 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2018-11-18 11:07:02,338 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,363 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,410 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,434 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,481 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:07:02,490 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,505 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:07:02,511 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,513 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:07:02,513 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:07:02,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:07:02,519 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,540 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:07:02,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:07:02,579 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,594 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:07:02,618 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:07:02,640 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:07:02,682 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-11-18 11:07:02,682 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 5 variables, input treesize:53, output treesize:74 [2018-11-18 11:07:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:04,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:07:08,738 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-11-18 11:07:10,426 WARN L180 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2018-11-18 11:07:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:10,573 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 11:07:10,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 14] total 45 [2018-11-18 11:07:10,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 11:07:10,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 11:07:10,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=2503, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 11:07:10,574 INFO L87 Difference]: Start difference. First operand 148 states and 152 transitions. Second operand 46 states. [2018-11-18 11:07:19,222 WARN L180 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2018-11-18 11:07:20,973 WARN L180 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-11-18 11:07:22,907 WARN L180 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2018-11-18 11:07:24,441 WARN L180 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-11-18 11:07:26,242 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2018-11-18 11:07:27,837 WARN L180 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-11-18 11:07:29,084 WARN L180 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2018-11-18 11:07:30,456 WARN L180 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-11-18 11:07:32,678 WARN L180 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-11-18 11:07:33,941 WARN L180 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-11-18 11:07:34,775 WARN L180 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-11-18 11:07:35,480 WARN L180 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2018-11-18 11:07:36,624 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-18 11:07:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:07:36,628 INFO L93 Difference]: Finished difference Result 204 states and 213 transitions. [2018-11-18 11:07:36,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 11:07:36,628 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 95 [2018-11-18 11:07:36,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:07:36,629 INFO L225 Difference]: With dead ends: 204 [2018-11-18 11:07:36,629 INFO L226 Difference]: Without dead ends: 204 [2018-11-18 11:07:36,631 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 265 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1868 ImplicationChecksByTransitivity, 26.7s TimeCoverageRelationStatistics Valid=863, Invalid=6109, Unknown=0, NotChecked=0, Total=6972 [2018-11-18 11:07:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-11-18 11:07:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 185. [2018-11-18 11:07:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-11-18 11:07:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 195 transitions. [2018-11-18 11:07:36,636 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 195 transitions. Word has length 95 [2018-11-18 11:07:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:07:36,636 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 195 transitions. [2018-11-18 11:07:36,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 11:07:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 195 transitions. [2018-11-18 11:07:36,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-18 11:07:36,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:07:36,637 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:07:36,637 INFO L423 AbstractCegarLoop]: === Iteration 15 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:07:36,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:07:36,637 INFO L82 PathProgramCache]: Analyzing trace with hash 688517482, now seen corresponding path program 1 times [2018-11-18 11:07:36,637 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:07:36,637 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:07:36,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:07:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:07:36,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:07:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:36,948 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:07:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:37,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:07:37,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:07:37,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:07:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:07:37,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:07:37,452 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:37,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:07:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:38,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:07:38,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12, 13] total 39 [2018-11-18 11:07:38,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-18 11:07:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-18 11:07:38,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 11:07:38,436 INFO L87 Difference]: Start difference. First operand 185 states and 195 transitions. Second operand 39 states. [2018-11-18 11:07:39,442 WARN L180 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2018-11-18 11:07:39,881 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2018-11-18 11:07:40,381 WARN L180 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 47 [2018-11-18 11:07:41,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:07:41,375 INFO L93 Difference]: Finished difference Result 212 states and 216 transitions. [2018-11-18 11:07:41,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-18 11:07:41,375 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 113 [2018-11-18 11:07:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:07:41,377 INFO L225 Difference]: With dead ends: 212 [2018-11-18 11:07:41,377 INFO L226 Difference]: Without dead ends: 212 [2018-11-18 11:07:41,377 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 411 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=601, Invalid=1849, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 11:07:41,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-11-18 11:07:41,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2018-11-18 11:07:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-11-18 11:07:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 216 transitions. [2018-11-18 11:07:41,381 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 216 transitions. Word has length 113 [2018-11-18 11:07:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:07:41,382 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 216 transitions. [2018-11-18 11:07:41,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-18 11:07:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 216 transitions. [2018-11-18 11:07:41,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-18 11:07:41,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:07:41,383 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:07:41,383 INFO L423 AbstractCegarLoop]: === Iteration 16 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:07:41,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:07:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1782687110, now seen corresponding path program 3 times [2018-11-18 11:07:41,384 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:07:41,384 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:07:41,401 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 11:07:45,241 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 11:07:45,241 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:07:45,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:07:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:45,601 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:07:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:07:48,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:07:48,631 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:07:48,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:08:02,285 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 11:08:02,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:08:02,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:02,308 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:08:02,318 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,327 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 34 [2018-11-18 11:08:02,359 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,362 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,377 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 51 [2018-11-18 11:08:02,462 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,470 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,472 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,474 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,482 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,484 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,492 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,493 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 29 [2018-11-18 11:08:02,494 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,581 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,588 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,590 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,593 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,595 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2018-11-18 11:08:02,596 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,655 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,724 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,733 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,734 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 38 [2018-11-18 11:08:02,771 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,779 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,782 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,784 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,786 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-11-18 11:08:02,787 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,813 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,862 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,886 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,932 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:08:02,941 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:02,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:02,960 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:02,965 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 28 [2018-11-18 11:08:02,965 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:02,984 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:03,024 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:03,026 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:03,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 42 [2018-11-18 11:08:03,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 53 [2018-11-18 11:08:03,033 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:03,054 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:03,077 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:03,101 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:03,142 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 5 dim-0 vars, and 2 xjuncts. [2018-11-18 11:08:03,143 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 5 variables, input treesize:53, output treesize:74 [2018-11-18 11:08:05,798 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:08:05,798 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:07,417 WARN L180 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-11-18 11:08:08,531 WARN L180 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-18 11:08:10,148 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-11-18 11:08:10,793 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-11-18 11:08:11,537 WARN L180 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-11-18 11:08:12,480 WARN L180 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-11-18 11:08:13,178 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-11-18 11:08:13,943 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-18 11:08:14,825 WARN L180 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-11-18 11:08:15,531 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-18 11:08:17,259 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2018-11-18 11:08:18,173 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-11-18 11:08:19,359 WARN L180 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2018-11-18 11:08:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-18 11:08:19,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:08:19,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 17, 22] total 73 [2018-11-18 11:08:19,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-11-18 11:08:19,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-11-18 11:08:19,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=4381, Unknown=0, NotChecked=0, Total=5256 [2018-11-18 11:08:19,560 INFO L87 Difference]: Start difference. First operand 208 states and 216 transitions. Second operand 73 states. [2018-11-18 11:08:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:29,559 INFO L93 Difference]: Finished difference Result 159 states and 161 transitions. [2018-11-18 11:08:29,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 11:08:29,562 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 119 [2018-11-18 11:08:29,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:29,563 INFO L225 Difference]: With dead ends: 159 [2018-11-18 11:08:29,563 INFO L226 Difference]: Without dead ends: 159 [2018-11-18 11:08:29,564 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 385 SyntacticMatches, 18 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=1290, Invalid=5850, Unknown=0, NotChecked=0, Total=7140 [2018-11-18 11:08:29,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-11-18 11:08:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-11-18 11:08:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-11-18 11:08:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2018-11-18 11:08:29,567 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 119 [2018-11-18 11:08:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:29,568 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2018-11-18 11:08:29,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-11-18 11:08:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2018-11-18 11:08:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-18 11:08:29,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:29,569 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:29,569 INFO L423 AbstractCegarLoop]: === Iteration 17 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:29,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:29,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1797058346, now seen corresponding path program 2 times [2018-11-18 11:08:29,570 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:29,570 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 30 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:29,597 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:08:29,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 11:08:29,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:08:29,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:29,672 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:08:29,681 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,690 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:08:29,697 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,713 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:08:29,769 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,772 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,775 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,775 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-11-18 11:08:29,776 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:29,846 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,848 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,851 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,856 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,866 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:29,867 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:08:29,867 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:29,927 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:29,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2018-11-18 11:08:30,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,011 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,014 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,015 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-11-18 11:08:30,015 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,038 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,077 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,100 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:08:30,139 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:30,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:08:30,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:08:30,165 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,176 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,222 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,229 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:08:30,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:30,253 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,303 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,305 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,308 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:30,309 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 49 [2018-11-18 11:08:30,309 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,344 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:30,383 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:30,420 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:30,475 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:30,475 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:08:30,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 29 [2018-11-18 11:08:30,596 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:30,614 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-18 11:08:30,615 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:35 [2018-11-18 11:08:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:30,724 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:08:30,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:08:30,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:08:30,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:08:30,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:08:30,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:08:30,726 INFO L87 Difference]: Start difference. First operand 159 states and 161 transitions. Second operand 6 states. [2018-11-18 11:08:31,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:31,196 INFO L93 Difference]: Finished difference Result 167 states and 169 transitions. [2018-11-18 11:08:31,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:08:31,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-18 11:08:31,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:31,198 INFO L225 Difference]: With dead ends: 167 [2018-11-18 11:08:31,198 INFO L226 Difference]: Without dead ends: 167 [2018-11-18 11:08:31,198 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:08:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-11-18 11:08:31,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2018-11-18 11:08:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-11-18 11:08:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2018-11-18 11:08:31,201 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 125 [2018-11-18 11:08:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:31,202 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2018-11-18 11:08:31,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:08:31,202 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2018-11-18 11:08:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-18 11:08:31,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:31,203 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:31,203 INFO L423 AbstractCegarLoop]: === Iteration 18 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:31,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 125766077, now seen corresponding path program 1 times [2018-11-18 11:08:31,204 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:31,204 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 31 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:31,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:08:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:08:31,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:31,537 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-11-18 11:08:31,537 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:31,542 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 11:08:31,542 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2018-11-18 11:08:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2018-11-18 11:08:31,566 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:08:31,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:08:31,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:08:31,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:08:31,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:08:31,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:08:31,570 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 5 states. [2018-11-18 11:08:31,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:31,753 INFO L93 Difference]: Finished difference Result 178 states and 181 transitions. [2018-11-18 11:08:31,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:08:31,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-11-18 11:08:31,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:31,754 INFO L225 Difference]: With dead ends: 178 [2018-11-18 11:08:31,754 INFO L226 Difference]: Without dead ends: 178 [2018-11-18 11:08:31,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:08:31,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-11-18 11:08:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 161. [2018-11-18 11:08:31,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-11-18 11:08:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 163 transitions. [2018-11-18 11:08:31,758 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 163 transitions. Word has length 126 [2018-11-18 11:08:31,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:31,758 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 163 transitions. [2018-11-18 11:08:31,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:08:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 163 transitions. [2018-11-18 11:08:31,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-18 11:08:31,760 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:31,760 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:31,760 INFO L423 AbstractCegarLoop]: === Iteration 19 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:31,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash 125766078, now seen corresponding path program 1 times [2018-11-18 11:08:31,762 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:31,762 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 32 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:31,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:08:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:08:32,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:32,158 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 11:08:32,159 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:32,177 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:32,177 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 11:08:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:32,189 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:08:32,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:08:32,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:08:32,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:08:32,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:08:32,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:08:32,193 INFO L87 Difference]: Start difference. First operand 161 states and 163 transitions. Second operand 3 states. [2018-11-18 11:08:32,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:32,306 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2018-11-18 11:08:32,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:08:32,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2018-11-18 11:08:32,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:32,308 INFO L225 Difference]: With dead ends: 164 [2018-11-18 11:08:32,308 INFO L226 Difference]: Without dead ends: 164 [2018-11-18 11:08:32,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:08:32,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-11-18 11:08:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2018-11-18 11:08:32,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-11-18 11:08:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2018-11-18 11:08:32,310 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 126 [2018-11-18 11:08:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:32,310 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2018-11-18 11:08:32,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:08:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2018-11-18 11:08:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-18 11:08:32,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:32,311 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:32,312 INFO L423 AbstractCegarLoop]: === Iteration 20 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:32,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:32,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1835209196, now seen corresponding path program 1 times [2018-11-18 11:08:32,312 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:32,312 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 33 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:32,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:08:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:08:32,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:32,826 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:08:32,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:32,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:08:32,854 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-11-18 11:08:32,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:32,871 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:32,873 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:32,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-11-18 11:08:32,874 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:32,898 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:32,970 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:32,981 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:32,989 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:08:33,040 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,043 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,045 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,046 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-11-18 11:08:33,046 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,156 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,158 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,161 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,163 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,170 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,171 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:08:33,172 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,227 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,260 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,284 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,312 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:08:33,323 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:33,355 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,362 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,376 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:08:33,386 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,389 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,390 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 49 [2018-11-18 11:08:33,391 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,436 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:33,437 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,467 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:33,517 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:08:33,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:08:33,524 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,537 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,578 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:33,612 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:33,667 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:33,668 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:08:33,813 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,814 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:33,815 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-18 11:08:33,815 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,887 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 33 [2018-11-18 11:08:33,888 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:33,913 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-18 11:08:33,914 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:39 [2018-11-18 11:08:34,145 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-11-18 11:08:34,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:34,674 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:34,675 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:34,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2018-11-18 11:08:34,676 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:34,759 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:34,760 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:34,760 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2018-11-18 11:08:34,761 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:34,834 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:34,835 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:34,836 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2018-11-18 11:08:34,836 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:34,901 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:34,901 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:95, output treesize:65 [2018-11-18 11:08:35,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:08:35,070 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:08:35,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:08:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:08:35,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:35,198 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:08:35,216 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,226 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:08:35,235 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,247 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,255 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:08:35,304 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,306 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-11-18 11:08:35,310 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,405 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,410 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,415 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,419 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,434 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:08:35,435 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,493 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2018-11-18 11:08:35,571 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,573 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,574 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2018-11-18 11:08:35,575 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,600 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,646 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,667 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,693 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:08:35,698 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,716 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:35,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:08:35,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:08:35,727 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,740 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,789 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,796 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,810 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:08:35,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:35,814 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,869 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,874 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:35,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 49 [2018-11-18 11:08:35,875 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:35,908 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:35,945 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:35,979 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:36,035 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:36,036 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:08:36,092 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:36,094 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:36,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-18 11:08:36,095 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:36,142 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:36,142 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:36,170 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-18 11:08:36,171 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:41 [2018-11-18 11:08:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-11-18 11:08:36,295 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:36,709 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-11-18 11:08:36,744 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:36,745 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:36,745 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2018-11-18 11:08:36,746 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:36,825 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:36,825 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:36,826 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2018-11-18 11:08:36,826 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:36,913 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:36,913 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:36,914 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2018-11-18 11:08:36,915 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:36,979 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:36,979 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:103, output treesize:73 [2018-11-18 11:08:37,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:08:37,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 11:08:37,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:08:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:08:37,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:08:37,355 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 8 states. [2018-11-18 11:08:38,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:38,076 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-11-18 11:08:38,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:08:38,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2018-11-18 11:08:38,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:38,077 INFO L225 Difference]: With dead ends: 171 [2018-11-18 11:08:38,077 INFO L226 Difference]: Without dead ends: 171 [2018-11-18 11:08:38,077 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 264 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:08:38,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-11-18 11:08:38,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2018-11-18 11:08:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-11-18 11:08:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 169 transitions. [2018-11-18 11:08:38,081 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 169 transitions. Word has length 131 [2018-11-18 11:08:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:38,081 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 169 transitions. [2018-11-18 11:08:38,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:08:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 169 transitions. [2018-11-18 11:08:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-18 11:08:38,081 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:38,081 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:38,082 INFO L423 AbstractCegarLoop]: === Iteration 21 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:38,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:38,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1056910184, now seen corresponding path program 1 times [2018-11-18 11:08:38,082 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:38,082 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 35 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:38,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:08:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:08:38,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:38,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 11:08:38,472 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:38,480 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:38,480 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 11:08:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:38,510 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:38,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:08:38,771 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:08:38,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:08:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:08:38,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:38,986 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 11:08:38,987 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:38,995 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:38,995 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-11-18 11:08:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:39,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:39,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:08:39,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 7, 4] total 13 [2018-11-18 11:08:39,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 11:08:39,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 11:08:39,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:08:39,353 INFO L87 Difference]: Start difference. First operand 167 states and 169 transitions. Second operand 14 states. [2018-11-18 11:08:39,902 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-11-18 11:08:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:40,537 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2018-11-18 11:08:40,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:08:40,538 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2018-11-18 11:08:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:40,539 INFO L225 Difference]: With dead ends: 184 [2018-11-18 11:08:40,539 INFO L226 Difference]: Without dead ends: 184 [2018-11-18 11:08:40,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 512 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2018-11-18 11:08:40,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-11-18 11:08:40,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 180. [2018-11-18 11:08:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-18 11:08:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 186 transitions. [2018-11-18 11:08:40,543 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 186 transitions. Word has length 132 [2018-11-18 11:08:40,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:40,544 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 186 transitions. [2018-11-18 11:08:40,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 11:08:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 186 transitions. [2018-11-18 11:08:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-18 11:08:40,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:40,545 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:40,545 INFO L423 AbstractCegarLoop]: === Iteration 22 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:40,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1474783874, now seen corresponding path program 2 times [2018-11-18 11:08:40,546 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:40,546 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 37 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:40,574 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:08:41,137 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:08:41,137 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:08:41,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:41,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:08:41,257 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:08:41,272 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-11-18 11:08:41,289 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,291 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,292 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 9 [2018-11-18 11:08:41,293 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,302 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,325 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,329 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:08:41,386 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,387 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,388 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,389 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-11-18 11:08:41,389 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,415 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,417 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,418 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,419 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,421 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,422 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-11-18 11:08:41,422 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,442 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,458 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,466 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:08:41,493 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,507 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:41,513 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:08:41,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:08:41,519 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,531 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,582 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,589 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:08:41,611 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,615 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:41,616 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 49 [2018-11-18 11:08:41,616 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:41,667 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:41,697 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:41,735 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:41,768 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:41,825 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:41,826 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:08:42,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:42,013 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:42,013 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:42,049 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:42,050 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:42,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-18 11:08:42,051 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:42,081 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-18 11:08:42,081 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:41 [2018-11-18 11:08:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-11-18 11:08:42,345 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:43,126 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:43,126 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:43,127 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2018-11-18 11:08:43,128 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:43,205 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:43,205 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:43,206 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 20 [2018-11-18 11:08:43,206 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:43,267 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:43,268 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:08:43,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2018-11-18 11:08:43,269 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:43,322 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 3 dim-0 vars, and 3 xjuncts. [2018-11-18 11:08:43,322 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:95, output treesize:65 [2018-11-18 11:08:43,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:08:43,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:08:43,488 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:08:43,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:08:43,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:08:43,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:08:43,625 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2018-11-18 11:08:43,637 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 38 [2018-11-18 11:08:43,662 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,673 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 41 [2018-11-18 11:08:43,792 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,807 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,807 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 56 [2018-11-18 11:08:43,818 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2018-11-18 11:08:43,819 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:43,858 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:43,975 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,977 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,983 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:43,985 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,002 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 56 [2018-11-18 11:08:44,025 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,040 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 60 [2018-11-18 11:08:44,048 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-18 11:08:44,319 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,321 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,324 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,328 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:44,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 58 [2018-11-18 11:08:44,329 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:44,502 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:44,756 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 11:08:45,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:08:45,100 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:45,107 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:45,113 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:45,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 45 [2018-11-18 11:08:45,129 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2018-11-18 11:08:45,129 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:45,190 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:45,253 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:45,560 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:08:45,855 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:08:46,171 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:08:46,180 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:08:46,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:08:46,201 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,203 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:08:46,204 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:46,218 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:08:46,257 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,262 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:08:46,289 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,290 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:08:46,291 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:46,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,345 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,351 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,353 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,354 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:46,355 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 49 [2018-11-18 11:08:46,355 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:46,399 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:08:46,443 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:46,486 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:08:46,640 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 27 dim-0 vars, and 15 xjuncts. [2018-11-18 11:08:46,640 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 5 variables, input treesize:54, output treesize:772 [2018-11-18 11:08:46,968 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 75 [2018-11-18 11:08:47,866 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 74 [2018-11-18 11:08:47,880 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:47,881 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:47,883 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:47,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 75 [2018-11-18 11:08:47,884 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:48,244 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,245 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,247 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,249 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,250 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2018-11-18 11:08:48,250 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:48,549 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,550 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,551 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,552 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,553 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 43 [2018-11-18 11:08:48,553 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:48,846 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,848 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,850 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:48,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 80 [2018-11-18 11:08:48,852 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:49,067 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,069 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,071 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,074 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 78 [2018-11-18 11:08:49,085 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-18 11:08:49,306 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,308 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,310 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,312 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,313 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,314 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:08:49,315 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 59 [2018-11-18 11:08:49,316 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:08:49,479 INFO L267 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 6 dim-1 vars, End of recursive call: 10 dim-0 vars, and 4 xjuncts. [2018-11-18 11:08:49,479 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 14 variables, input treesize:201, output treesize:202 [2018-11-18 11:08:49,688 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 58 [2018-11-18 11:08:51,957 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 60 [2018-11-18 11:08:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:08:52,565 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:08:53,651 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2018-11-18 11:08:54,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:08:54,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-11-18 11:08:54,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 11:08:54,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 11:08:54,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-11-18 11:08:54,173 INFO L87 Difference]: Start difference. First operand 180 states and 186 transitions. Second operand 15 states. [2018-11-18 11:08:54,921 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 85 [2018-11-18 11:08:57,723 WARN L180 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 123 [2018-11-18 11:08:58,481 WARN L180 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-11-18 11:08:58,961 WARN L180 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2018-11-18 11:08:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:08:59,448 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2018-11-18 11:08:59,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:08:59,448 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 137 [2018-11-18 11:08:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:08:59,449 INFO L225 Difference]: With dead ends: 180 [2018-11-18 11:08:59,449 INFO L226 Difference]: Without dead ends: 180 [2018-11-18 11:08:59,449 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=186, Invalid=684, Unknown=0, NotChecked=0, Total=870 [2018-11-18 11:08:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-11-18 11:08:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-11-18 11:08:59,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-18 11:08:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2018-11-18 11:08:59,453 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 137 [2018-11-18 11:08:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:08:59,453 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2018-11-18 11:08:59,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 11:08:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2018-11-18 11:08:59,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-18 11:08:59,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:08:59,454 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:08:59,454 INFO L423 AbstractCegarLoop]: === Iteration 23 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:08:59,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:08:59,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1924168344, now seen corresponding path program 3 times [2018-11-18 11:08:59,455 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:08:59,455 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 39 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:08:59,475 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 11:09:00,022 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 11:09:00,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:09:00,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:09:00,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-11-18 11:09:00,091 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,099 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2018-11-18 11:09:00,106 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-11-18 11:09:00,123 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,125 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,127 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-11-18 11:09:00,128 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,162 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,230 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,249 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2018-11-18 11:09:00,307 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,311 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,312 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 24 [2018-11-18 11:09:00,312 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,401 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,404 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,406 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,408 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,417 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-18 11:09:00,418 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,478 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,513 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,537 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,563 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:09:00,570 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:09:00,589 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:09:00,595 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:09:00,595 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,608 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,658 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,665 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:09:00,694 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,697 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:00,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 49 [2018-11-18 11:09:00,699 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,745 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:09:00,745 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:00,771 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:09:00,809 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:09:00,844 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:09:00,905 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 3 xjuncts. [2018-11-18 11:09:00,905 INFO L202 ElimStorePlain]: Needed 15 recursive calls to eliminate 5 variables, input treesize:36, output treesize:89 [2018-11-18 11:09:01,055 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:01,061 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 33 [2018-11-18 11:09:01,062 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:01,091 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:01,092 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:01,092 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-18 11:09:01,093 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:01,114 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-11-18 11:09:01,114 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:48, output treesize:39 [2018-11-18 11:09:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 38 proven. 27 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2018-11-18 11:09:01,416 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:09:01,908 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-11-18 11:09:02,617 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2018-11-18 11:09:02,661 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:09:02,662 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:09:02,663 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 39 [2018-11-18 11:09:02,663 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:02,730 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:09:02,730 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:09:02,731 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2018-11-18 11:09:02,732 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:02,804 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-11-18 11:09:02,804 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:80, output treesize:59 [2018-11-18 11:09:02,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:09:02,999 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:09:03,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:09:03,291 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 11:09:03,291 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:09:03,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:09:03,304 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2018-11-18 11:09:03,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,317 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 38 [2018-11-18 11:09:03,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 11:09:03,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,349 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 45 [2018-11-18 11:09:03,357 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2018-11-18 11:09:03,357 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:03,369 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:03,384 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:03,424 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,427 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,448 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 41 [2018-11-18 11:09:03,551 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,553 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,556 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 56 [2018-11-18 11:09:03,563 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2018-11-18 11:09:03,563 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:03,581 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:03,626 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,627 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,630 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,631 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 56 [2018-11-18 11:09:03,651 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,652 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 58 [2018-11-18 11:09:03,652 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:03,717 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,718 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,722 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,723 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,724 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,726 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,731 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:03,739 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 60 [2018-11-18 11:09:03,739 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-18 11:09:03,809 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:09:03,893 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 11:09:03,987 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:09:04,077 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 11:09:04,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 18 [2018-11-18 11:09:04,198 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 24 [2018-11-18 11:09:04,219 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,232 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,246 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 11:09:04,251 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,253 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,254 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 35 [2018-11-18 11:09:04,254 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:04,315 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,317 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,319 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,324 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,326 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,328 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 49 [2018-11-18 11:09:04,329 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:04,371 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 11:09:04,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2018-11-18 11:09:04,440 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,442 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:04,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 24 [2018-11-18 11:09:04,443 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:04,457 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 11:09:04,503 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:09:04,546 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 11:09:04,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 27 dim-0 vars, and 15 xjuncts. [2018-11-18 11:09:04,695 INFO L202 ElimStorePlain]: Needed 19 recursive calls to eliminate 5 variables, input treesize:54, output treesize:772 [2018-11-18 11:09:05,088 WARN L180 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 83 [2018-11-18 11:09:06,380 WARN L180 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 82 [2018-11-18 11:09:06,389 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:06,393 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:06,395 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:06,396 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 77 [2018-11-18 11:09:06,396 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:07,012 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,015 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,018 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,021 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 60 [2018-11-18 11:09:07,022 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:07,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,498 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,499 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,500 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,501 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2018-11-18 11:09:07,501 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:07,962 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,963 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,965 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:07,965 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 38 [2018-11-18 11:09:07,966 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:08,463 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,468 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,469 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,471 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,472 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 11:09:08,472 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 67 [2018-11-18 11:09:08,473 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:08,820 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,822 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,823 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,827 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 11:09:08,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 77 [2018-11-18 11:09:08,838 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-11-18 11:09:09,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 66 [2018-11-18 11:09:09,237 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:09,556 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2018-11-18 11:09:09,557 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 11:09:09,773 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 8 dim-1 vars, End of recursive call: 8 dim-0 vars, and 5 xjuncts. [2018-11-18 11:09:09,773 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 14 variables, input treesize:251, output treesize:253 [2018-11-18 11:09:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 11:09:10,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:09:13,328 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2018-11-18 11:09:13,851 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-11-18 11:09:13,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:09:13,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-11-18 11:09:13,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 11:09:13,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 11:09:13,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2018-11-18 11:09:13,875 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand 18 states. [2018-11-18 11:09:14,865 WARN L180 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 93 [2018-11-18 11:09:15,152 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2018-11-18 11:09:15,501 WARN L180 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-11-18 11:09:15,849 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-11-18 11:09:16,211 WARN L180 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2018-11-18 11:09:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:09:16,833 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2018-11-18 11:09:16,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:09:16,833 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 143 [2018-11-18 11:09:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:09:16,835 INFO L225 Difference]: With dead ends: 182 [2018-11-18 11:09:16,835 INFO L226 Difference]: Without dead ends: 182 [2018-11-18 11:09:16,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 293 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=274, Invalid=1058, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 11:09:16,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-11-18 11:09:16,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2018-11-18 11:09:16,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-18 11:09:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 182 transitions. [2018-11-18 11:09:16,839 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 182 transitions. Word has length 143 [2018-11-18 11:09:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:09:16,839 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 182 transitions. [2018-11-18 11:09:16,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 11:09:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 182 transitions. [2018-11-18 11:09:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 11:09:16,840 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:09:16,840 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:09:16,840 INFO L423 AbstractCegarLoop]: === Iteration 24 === [getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 11:09:16,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:09:16,841 INFO L82 PathProgramCache]: Analyzing trace with hash -2110348754, now seen corresponding path program 4 times [2018-11-18 11:09:16,841 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:09:16,841 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9135a8f4-ca36-4211-8bbb-8994094c74f2/bin-2019/utaipan/cvc4nyu Starting monitored process 41 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:09:16,862 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:09:17,076 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:09:17,076 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:358) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.partitionStmtsAccordingToConstantSize(AnnotateAndAsserterWithStmtOrderPrioritization.java:377) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.annotateAndAssertStmtsAccording5Heuristic(AnnotateAndAsserterWithStmtOrderPrioritization.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserterWithStmtOrderPrioritization.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2018-11-18 11:09:17,079 INFO L168 Benchmark]: Toolchain (without parser) took 194149.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.2 MB). Free memory was 953.2 MB in the beginning and 854.6 MB in the end (delta: 98.6 MB). Peak memory consumption was 297.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:09:17,080 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:09:17,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.62 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:09:17,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.96 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:09:17,080 INFO L168 Benchmark]: Boogie Preprocessor took 32.03 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:09:17,081 INFO L168 Benchmark]: RCFGBuilder took 476.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-18 11:09:17,081 INFO L168 Benchmark]: TraceAbstraction took 193377.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 854.6 MB in the end (delta: 252.2 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:09:17,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.62 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 937.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.96 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.03 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 476.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 193377.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.1 MB). Free memory was 1.1 GB in the beginning and 854.6 MB in the end (delta: 252.2 MB). Peak memory consumption was 308.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible!: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:358) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...