./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.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_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 b8a667539b0a7850f9a7aa38ebbe1ead0e2c55d4 .................................................................................................................................................................................................................................................................................................................................................................................. 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_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 b8a667539b0a7850f9a7aa38ebbe1ead0e2c55d4 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:38:59,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:38:59,663 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:38:59,670 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:38:59,670 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:38:59,671 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:38:59,671 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:38:59,672 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:38:59,673 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:38:59,674 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:38:59,674 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:38:59,674 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:38:59,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:38:59,675 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:38:59,676 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:38:59,676 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:38:59,676 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:38:59,677 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:38:59,679 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:38:59,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:38:59,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:38:59,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:38:59,683 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:38:59,683 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:38:59,683 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:38:59,684 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:38:59,684 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:38:59,685 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:38:59,686 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:38:59,686 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:38:59,687 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:38:59,687 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:38:59,687 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:38:59,687 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:38:59,688 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:38:59,689 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:38:59,689 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-11-18 17:38:59,700 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:38:59,700 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:38:59,700 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:38:59,701 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:38:59,701 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:38:59,701 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:38:59,701 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:38:59,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:38:59,702 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:38:59,702 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:38:59,702 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:38:59,702 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:38:59,702 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:38:59,703 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:38:59,703 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:38:59,703 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:38:59,703 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:38:59,703 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:38:59,704 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:38:59,704 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:38:59,704 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:38:59,704 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 17:38:59,704 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 17:38:59,704 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 17:38:59,705 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:38:59,705 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:38:59,705 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:38:59,705 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:38:59,705 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:38:59,705 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:38:59,705 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:38:59,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:38:59,706 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:38:59,706 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:38:59,706 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:38:59,706 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:38:59,706 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:38:59,706 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 -> b8a667539b0a7850f9a7aa38ebbe1ead0e2c55d4 [2018-11-18 17:38:59,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:38:59,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:38:59,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:38:59,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:38:59,746 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:38:59,746 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.c [2018-11-18 17:38:59,794 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/9338bca58/ceec0c278e0b4034a2b1929c97a792e7/FLAG26087a4f4 [2018-11-18 17:39:00,118 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:39:00,118 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.c [2018-11-18 17:39:00,122 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/9338bca58/ceec0c278e0b4034a2b1929c97a792e7/FLAG26087a4f4 [2018-11-18 17:39:00,131 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/9338bca58/ceec0c278e0b4034a2b1929c97a792e7 [2018-11-18 17:39:00,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:39:00,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:39:00,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:39:00,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:39:00,137 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:39:00,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4635a163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00, skipping insertion in model container [2018-11-18 17:39:00,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:39:00,163 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:39:00,278 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:39:00,289 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:39:00,304 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:39:00,315 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:39:00,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00 WrapperNode [2018-11-18 17:39:00,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:39:00,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:39:00,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:39:00,316 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:39:00,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:39:00,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:39:00,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:39:00,333 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:39:00,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... [2018-11-18 17:39:00,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:39:00,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:39:00,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:39:00,394 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:39:00,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:39:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:39:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:39:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:39:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:39:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2018-11-18 17:39:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2018-11-18 17:39:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2018-11-18 17:39:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2018-11-18 17:39:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2018-11-18 17:39:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2018-11-18 17:39:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:39:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:39:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:39:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:39:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:39:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-18 17:39:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-18 17:39:00,685 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:39:00,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:00 BoogieIcfgContainer [2018-11-18 17:39:00,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:39:00,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:39:00,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:39:00,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:39:00,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:39:00" (1/3) ... [2018-11-18 17:39:00,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a71e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:39:00, skipping insertion in model container [2018-11-18 17:39:00,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:00" (2/3) ... [2018-11-18 17:39:00,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8a71e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:39:00, skipping insertion in model container [2018-11-18 17:39:00,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:00" (3/3) ... [2018-11-18 17:39:00,692 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4_true-valid-memsafety.c [2018-11-18 17:39:00,697 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:39:00,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-11-18 17:39:00,710 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2018-11-18 17:39:00,725 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:39:00,725 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 17:39:00,726 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:39:00,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:39:00,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:39:00,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:39:00,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:39:00,726 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:39:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-11-18 17:39:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:39:00,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:00,741 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:00,743 INFO L423 AbstractCegarLoop]: === Iteration 1 === [getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 17:39:00,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:00,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685820, now seen corresponding path program 1 times [2018-11-18 17:39:00,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:00,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:00,777 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:00,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:00,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:39:00,885 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:39:00,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:39:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:39:00,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:39:00,898 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 3 states. [2018-11-18 17:39:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:00,949 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-11-18 17:39:00,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:39:00,951 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 17:39:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:00,958 INFO L225 Difference]: With dead ends: 73 [2018-11-18 17:39:00,958 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 17:39:00,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:39:00,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 17:39:00,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-18 17:39:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 17:39:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-11-18 17:39:00,982 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 13 [2018-11-18 17:39:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:00,982 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-11-18 17:39:00,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:39:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-11-18 17:39:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:39:00,983 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:00,983 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:00,983 INFO L423 AbstractCegarLoop]: === Iteration 2 === [getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 17:39:00,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:00,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685819, now seen corresponding path program 1 times [2018-11-18 17:39:00,984 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:00,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:00,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:00,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:00,985 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:01,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:01,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:39:01,079 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:39:01,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:39:01,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:39:01,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:39:01,081 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2018-11-18 17:39:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:01,151 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2018-11-18 17:39:01,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:39:01,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 17:39:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:01,152 INFO L225 Difference]: With dead ends: 72 [2018-11-18 17:39:01,152 INFO L226 Difference]: Without dead ends: 72 [2018-11-18 17:39:01,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 17:39:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-18 17:39:01,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-11-18 17:39:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 17:39:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-11-18 17:39:01,157 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 13 [2018-11-18 17:39:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:01,157 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-11-18 17:39:01,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:39:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-11-18 17:39:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 17:39:01,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:01,158 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:01,158 INFO L423 AbstractCegarLoop]: === Iteration 3 === [getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION]=== [2018-11-18 17:39:01,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:01,158 INFO L82 PathProgramCache]: Analyzing trace with hash -762851940, now seen corresponding path program 1 times [2018-11-18 17:39:01,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:39:01,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:01,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:01,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:39:01,160 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:39:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:01,325 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 17:39:01,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:01,326 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:39:01,327 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 18 with the following transitions: [2018-11-18 17:39:01,328 INFO L202 CegarAbsIntRunner]: [0], [1], [103], [107], [112], [113], [115], [117], [123], [125], [127], [129], [130], [131], [133] [2018-11-18 17:39:01,353 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:39:01,353 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:39:01,418 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.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 17:39:01,421 INFO L168 Benchmark]: Toolchain (without parser) took 1288.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 961.2 MB in the beginning and 1.0 GB in the end (delta: -69.1 MB). Peak memory consumption was 74.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:01,423 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:39:01,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.53 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 945.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:01,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:39:01,424 INFO L168 Benchmark]: Boogie Preprocessor took 60.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:01,424 INFO L168 Benchmark]: RCFGBuilder took 292.69 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:01,424 INFO L168 Benchmark]: TraceAbstraction took 733.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.4 MB). Peak memory consumption was 79.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:39:01,426 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 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.53 ms. Allocated memory is still 1.0 GB. Free memory was 961.2 MB in the beginning and 945.1 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 16.85 ms. Allocated memory is still 1.0 GB. Free memory is still 945.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -189.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 292.69 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 733.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.4 MB). Peak memory consumption was 79.4 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 17:39:02,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:39:02,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:39:02,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:39:02,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:39:02,847 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:39:02,848 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:39:02,849 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:39:02,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:39:02,851 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:39:02,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:39:02,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:39:02,853 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:39:02,853 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:39:02,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:39:02,854 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:39:02,855 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:39:02,855 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:39:02,856 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:39:02,857 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:39:02,858 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:39:02,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:39:02,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:39:02,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:39:02,861 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:39:02,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:39:02,863 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:39:02,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:39:02,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:39:02,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:39:02,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:39:02,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:39:02,866 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:39:02,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:39:02,867 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:39:02,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:39:02,868 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-11-18 17:39:02,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:39:02,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:39:02,880 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:39:02,880 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:39:02,880 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:39:02,880 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:39:02,880 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:39:02,880 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:39:02,881 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:39:02,881 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:39:02,881 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:39:02,881 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:39:02,881 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 17:39:02,882 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:39:02,883 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:39:02,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:39:02,884 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:39:02,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:39:02,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:39:02,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:39:02,884 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:39:02,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:39:02,884 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:39:02,884 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_d9dad511-541a-4144-9024-c0ab5efaac59/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 -> b8a667539b0a7850f9a7aa38ebbe1ead0e2c55d4 [2018-11-18 17:39:02,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:39:02,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:39:02,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:39:02,928 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:39:02,929 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:39:02,929 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.c [2018-11-18 17:39:02,975 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/6ce8c619f/c06b6c0adfcb4577a20b99d7ae14b70e/FLAGe1b5b1d9a [2018-11-18 17:39:03,311 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:39:03,312 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/sv-benchmarks/c/memsafety-ext3/getNumbers4_true-valid-memsafety.c [2018-11-18 17:39:03,316 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/6ce8c619f/c06b6c0adfcb4577a20b99d7ae14b70e/FLAGe1b5b1d9a [2018-11-18 17:39:03,324 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/data/6ce8c619f/c06b6c0adfcb4577a20b99d7ae14b70e [2018-11-18 17:39:03,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:39:03,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:39:03,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:39:03,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:39:03,331 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:39:03,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1074a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03, skipping insertion in model container [2018-11-18 17:39:03,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:39:03,360 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:39:03,489 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:39:03,503 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:39:03,522 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:39:03,536 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:39:03,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03 WrapperNode [2018-11-18 17:39:03,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:39:03,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:39:03,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:39:03,537 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:39:03,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:39:03,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:39:03,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:39:03,557 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:39:03,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... [2018-11-18 17:39:03,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:39:03,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:39:03,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:39:03,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:39:03,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:39:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers4 [2018-11-18 17:39:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers4 [2018-11-18 17:39:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:39:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:39:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:39:03,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:39:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:39:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:39:03,654 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers3 [2018-11-18 17:39:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers3 [2018-11-18 17:39:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers2 [2018-11-18 17:39:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers2 [2018-11-18 17:39:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:39:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:39:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2018-11-18 17:39:03,655 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2018-11-18 17:39:03,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 17:39:03,996 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:39:03,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:03 BoogieIcfgContainer [2018-11-18 17:39:03,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:39:03,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:39:03,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:39:03,999 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:39:03,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:39:03" (1/3) ... [2018-11-18 17:39:04,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577e61ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:39:04, skipping insertion in model container [2018-11-18 17:39:04,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:39:03" (2/3) ... [2018-11-18 17:39:04,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577e61ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:39:04, skipping insertion in model container [2018-11-18 17:39:04,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:03" (3/3) ... [2018-11-18 17:39:04,002 INFO L112 eAbstractionObserver]: Analyzing ICFG getNumbers4_true-valid-memsafety.c [2018-11-18 17:39:04,009 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:39:04,014 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-11-18 17:39:04,024 INFO L257 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2018-11-18 17:39:04,041 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:39:04,041 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:39:04,041 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 17:39:04,041 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:39:04,041 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:39:04,042 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:39:04,042 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:39:04,042 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:39:04,042 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:39:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-11-18 17:39:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:39:04,059 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:04,060 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:04,062 INFO L423 AbstractCegarLoop]: === Iteration 1 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:04,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685820, now seen corresponding path program 1 times [2018-11-18 17:39:04,068 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:04,068 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:04,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:04,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:04,189 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 47 treesize of output 43 [2018-11-18 17:39:04,268 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,308 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 40 treesize of output 53 [2018-11-18 17:39:04,465 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2018-11-18 17:39:04,471 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,472 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,473 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:04,474 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 41 treesize of output 51 [2018-11-18 17:39:04,480 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 36 treesize of output 43 [2018-11-18 17:39:04,491 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 31 treesize of output 39 [2018-11-18 17:39:04,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2018-11-18 17:39:04,524 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:04,538 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:04,551 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:04,568 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:04,640 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,644 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,655 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,669 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 40 treesize of output 61 [2018-11-18 17:39:04,699 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 57 treesize of output 60 [2018-11-18 17:39:04,751 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 60 [2018-11-18 17:39:04,766 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 54 treesize of output 65 [2018-11-18 17:39:04,767 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:04,891 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,899 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,906 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,914 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,923 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:04,932 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 63 [2018-11-18 17:39:04,933 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-18 17:39:05,007 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:05,114 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:05,116 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 37 treesize of output 50 [2018-11-18 17:39:05,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2018-11-18 17:39:05,130 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:05,147 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:05,245 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:39:05,353 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:05,354 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:05,356 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:05,357 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 31 treesize of output 46 [2018-11-18 17:39:05,365 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 31 treesize of output 39 [2018-11-18 17:39:05,377 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 38 [2018-11-18 17:39:05,378 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:05,396 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:05,412 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:05,498 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:39:05,589 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:39:05,669 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:39:05,759 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 20 dim-0 vars, and 6 xjuncts. [2018-11-18 17:39:05,759 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 5 variables, input treesize:47, output treesize:245 [2018-11-18 17:39:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:05,833 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:39:05,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:05,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:39:05,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:39:05,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:39:05,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:39:05,854 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 3 states. [2018-11-18 17:39:05,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:05,940 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-11-18 17:39:05,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:39:05,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 17:39:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:05,947 INFO L225 Difference]: With dead ends: 73 [2018-11-18 17:39:05,947 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 17:39:05,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 17:39:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 17:39:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-18 17:39:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 17:39:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2018-11-18 17:39:05,974 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 13 [2018-11-18 17:39:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:05,974 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2018-11-18 17:39:05,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:39:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2018-11-18 17:39:05,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:39:05,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:05,974 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:05,975 INFO L423 AbstractCegarLoop]: === Iteration 2 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:05,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:05,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1572685819, now seen corresponding path program 1 times [2018-11-18 17:39:05,975 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:05,975 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:05,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:06,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:06,039 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 17:39:06,048 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,062 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 17:39:06,068 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,069 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 21 treesize of output 27 [2018-11-18 17:39:06,077 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,079 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,079 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 20 treesize of output 34 [2018-11-18 17:39:06,115 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 17:39:06,115 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,127 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,140 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,190 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,193 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,197 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,200 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,201 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 23 treesize of output 45 [2018-11-18 17:39:06,209 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,210 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,211 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,212 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:39:06,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 54 [2018-11-18 17:39:06,238 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-18 17:39:06,287 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:06,318 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:06,358 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:06,396 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:06,452 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 17:39:06,459 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,466 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 31 treesize of output 34 [2018-11-18 17:39:06,495 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,497 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,498 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 17:39:06,520 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,522 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,523 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,524 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,525 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,526 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 17:39:06,526 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,537 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,565 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,566 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,571 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,584 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 17:39:06,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,637 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,637 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,638 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:06,638 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 35 treesize of output 32 [2018-11-18 17:39:06,639 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,667 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,670 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,671 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,672 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,675 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,676 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,678 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:06,679 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 17:39:06,680 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,711 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,740 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,750 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:06,809 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:39:06,809 INFO L202 ElimStorePlain]: Needed 16 recursive calls to eliminate 6 variables, input treesize:53, output treesize:130 [2018-11-18 17:39:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:06,930 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:39:06,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:06,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:39:06,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:39:06,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:39:06,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:39:06,934 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 4 states. [2018-11-18 17:39:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:07,192 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2018-11-18 17:39:07,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:39:07,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 17:39:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:07,194 INFO L225 Difference]: With dead ends: 72 [2018-11-18 17:39:07,194 INFO L226 Difference]: Without dead ends: 72 [2018-11-18 17:39:07,194 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 17:39:07,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-18 17:39:07,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-11-18 17:39:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 17:39:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-11-18 17:39:07,200 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 13 [2018-11-18 17:39:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:07,201 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-11-18 17:39:07,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:39:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-11-18 17:39:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 17:39:07,201 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:07,201 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:07,201 INFO L423 AbstractCegarLoop]: === Iteration 3 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:07,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:07,202 INFO L82 PathProgramCache]: Analyzing trace with hash -762851940, now seen corresponding path program 1 times [2018-11-18 17:39:07,202 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:07,202 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:07,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:07,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:07,267 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 17:39:07,274 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,289 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 17:39:07,293 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,294 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 21 treesize of output 27 [2018-11-18 17:39:07,300 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 20 treesize of output 26 [2018-11-18 17:39:07,317 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 17:39:07,318 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,329 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,341 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,413 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,418 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,421 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,425 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,426 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 23 treesize of output 45 [2018-11-18 17:39:07,468 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 43 [2018-11-18 17:39:07,486 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 37 treesize of output 44 [2018-11-18 17:39:07,486 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,547 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,562 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,570 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 2 case distinctions, treesize of input 27 treesize of output 46 [2018-11-18 17:39:07,571 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-18 17:39:07,615 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:07,655 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:07,703 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:39:07,745 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:39:07,796 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 17:39:07,800 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,806 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 17:39:07,821 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,822 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,824 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,825 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 17:39:07,825 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,844 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,845 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:07,846 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 17:39:07,846 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,856 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,862 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:07,913 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:39:07,913 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:36, output treesize:132 [2018-11-18 17:39:07,984 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 17:39:07,984 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:08,283 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 17:39:08,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:08,285 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:08,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:08,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:08,325 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 17:39:08,334 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,347 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 17:39:08,354 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,355 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 21 treesize of output 27 [2018-11-18 17:39:08,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,361 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 20 treesize of output 34 [2018-11-18 17:39:08,366 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,368 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,369 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,370 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 45 [2018-11-18 17:39:08,370 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,388 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,400 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,436 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,438 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,439 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,441 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,442 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 23 treesize of output 45 [2018-11-18 17:39:08,452 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,453 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,455 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,456 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:39:08,466 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,467 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,469 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,470 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,471 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:39:08,471 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,500 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,527 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,554 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:08,580 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:08,643 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 52 treesize of output 48 [2018-11-18 17:39:08,656 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,669 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 48 treesize of output 48 [2018-11-18 17:39:08,724 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,726 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,731 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,741 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 47 treesize of output 62 [2018-11-18 17:39:08,812 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,815 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,816 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,817 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,819 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,820 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,823 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,834 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 74 [2018-11-18 17:39:08,923 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,924 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,925 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,926 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,927 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,928 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,929 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,930 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,931 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,934 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:08,935 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2018-11-18 17:39:08,936 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:08,997 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,000 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,001 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,002 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,003 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,003 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:09,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 44 [2018-11-18 17:39:09,005 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,048 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,103 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,105 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,107 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,108 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,109 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 61 [2018-11-18 17:39:09,156 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,157 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,158 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,159 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,160 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,161 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,162 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,163 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2018-11-18 17:39:09,163 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,182 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,209 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,254 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,260 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 42 treesize of output 49 [2018-11-18 17:39:09,309 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,313 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,315 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,317 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,319 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,320 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 0 case distinctions, treesize of input 36 treesize of output 59 [2018-11-18 17:39:09,381 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,383 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,385 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:09,386 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:09,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2018-11-18 17:39:09,389 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,419 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,438 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,471 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,492 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:09,544 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-11-18 17:39:09,544 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:73, output treesize:102 [2018-11-18 17:39:09,738 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 17:39:09,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:09,970 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 17:39:09,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:39:09,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5] total 13 [2018-11-18 17:39:09,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:39:09,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:39:09,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:39:09,986 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 14 states. [2018-11-18 17:39:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:10,594 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2018-11-18 17:39:10,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:39:10,595 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-11-18 17:39:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:10,597 INFO L225 Difference]: With dead ends: 89 [2018-11-18 17:39:10,597 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 17:39:10,597 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2018-11-18 17:39:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 17:39:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-11-18 17:39:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-18 17:39:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2018-11-18 17:39:10,602 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 17 [2018-11-18 17:39:10,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:10,602 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2018-11-18 17:39:10,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:39:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2018-11-18 17:39:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 17:39:10,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:10,603 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 17:39:10,603 INFO L423 AbstractCegarLoop]: === Iteration 4 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:10,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1667857317, now seen corresponding path program 1 times [2018-11-18 17:39:10,603 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:10,603 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:10,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:10,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:10,675 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 17:39:10,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:10,707 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 17:39:10,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:10,709 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:10,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:10,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:10,771 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 17:39:10,771 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:39:10,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:39:10,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 12 [2018-11-18 17:39:10,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 17:39:10,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 17:39:10,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:39:10,787 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 12 states. [2018-11-18 17:39:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:11,159 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2018-11-18 17:39:11,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 17:39:11,159 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-11-18 17:39:11,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:11,160 INFO L225 Difference]: With dead ends: 90 [2018-11-18 17:39:11,160 INFO L226 Difference]: Without dead ends: 90 [2018-11-18 17:39:11,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2018-11-18 17:39:11,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-18 17:39:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2018-11-18 17:39:11,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-18 17:39:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-11-18 17:39:11,165 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 27 [2018-11-18 17:39:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:11,165 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-11-18 17:39:11,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 17:39:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-11-18 17:39:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 17:39:11,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:11,166 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:11,166 INFO L423 AbstractCegarLoop]: === Iteration 5 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:11,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash 350108001, now seen corresponding path program 2 times [2018-11-18 17:39:11,166 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:11,166 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:11,178 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 17:39:11,287 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:39:11,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:39:11,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:11,311 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 17:39:11,319 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,331 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 17:39:11,336 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,336 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 21 treesize of output 27 [2018-11-18 17:39:11,343 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 20 treesize of output 26 [2018-11-18 17:39:11,354 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 17:39:11,354 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,363 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,373 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,427 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,430 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,433 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,435 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,436 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 45 [2018-11-18 17:39:11,458 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 43 [2018-11-18 17:39:11,469 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 37 treesize of output 44 [2018-11-18 17:39:11,469 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,535 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,549 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,559 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 2 case distinctions, treesize of input 27 treesize of output 46 [2018-11-18 17:39:11,560 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-11-18 17:39:11,605 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:11,643 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:11,686 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:39:11,726 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:39:11,778 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 17:39:11,782 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,787 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 17:39:11,803 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,804 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,805 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 20 treesize of output 12 [2018-11-18 17:39:11,805 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,826 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,827 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,829 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:11,829 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 17:39:11,830 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,842 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,847 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:11,896 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:39:11,897 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 6 variables, input treesize:36, output treesize:132 [2018-11-18 17:39:12,054 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 17:39:12,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:13,046 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 17:39:13,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:13,048 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:13,054 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:39:13,090 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:39:13,090 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:39:13,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:13,104 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 17:39:13,117 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,130 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 17:39:13,137 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,138 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,140 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,142 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,143 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 23 treesize of output 45 [2018-11-18 17:39:13,151 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,152 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,154 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,155 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:39:13,162 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,164 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,165 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,166 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:39:13,168 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,194 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,210 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,250 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,251 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 21 treesize of output 27 [2018-11-18 17:39:13,262 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,264 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,264 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 20 treesize of output 34 [2018-11-18 17:39:13,271 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,272 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,273 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,274 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 45 [2018-11-18 17:39:13,274 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,291 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,304 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,330 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:13,365 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:13,418 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 52 treesize of output 48 [2018-11-18 17:39:13,425 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,435 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 48 treesize of output 48 [2018-11-18 17:39:13,467 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,469 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,470 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 45 treesize of output 52 [2018-11-18 17:39:13,507 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,508 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,509 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,509 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:13,510 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 61 [2018-11-18 17:39:13,593 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,593 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,594 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,595 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,596 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,597 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 37 [2018-11-18 17:39:13,598 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,611 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,628 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,668 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,669 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,674 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,685 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 47 treesize of output 62 [2018-11-18 17:39:13,769 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,770 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,772 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,774 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,777 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,777 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:13,786 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 74 [2018-11-18 17:39:13,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,871 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,872 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,873 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,873 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:13,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 48 [2018-11-18 17:39:13,875 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,929 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,940 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,942 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,943 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,949 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,950 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,952 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,953 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,954 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,955 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,958 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:13,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 49 [2018-11-18 17:39:13,959 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:13,996 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:14,038 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,039 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,040 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,040 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:14,041 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 63 [2018-11-18 17:39:14,082 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,083 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,084 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,085 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:14,085 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:14,086 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2018-11-18 17:39:14,086 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:14,105 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:14,135 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:14,162 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:14,173 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:14,216 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-11-18 17:39:14,216 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:73, output treesize:102 [2018-11-18 17:39:14,714 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 17:39:14,714 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:15,948 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-11-18 17:39:16,179 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 17:39:16,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:39:16,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7, 10] total 28 [2018-11-18 17:39:16,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-18 17:39:16,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-18 17:39:16,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2018-11-18 17:39:16,197 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 29 states. [2018-11-18 17:39:17,055 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 48 [2018-11-18 17:39:17,367 WARN L180 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-11-18 17:39:17,620 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-11-18 17:39:18,891 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-11-18 17:39:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:19,244 INFO L93 Difference]: Finished difference Result 118 states and 126 transitions. [2018-11-18 17:39:19,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:39:19,245 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-11-18 17:39:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:19,246 INFO L225 Difference]: With dead ends: 118 [2018-11-18 17:39:19,246 INFO L226 Difference]: Without dead ends: 118 [2018-11-18 17:39:19,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=350, Invalid=840, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 17:39:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-11-18 17:39:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2018-11-18 17:39:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-18 17:39:19,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2018-11-18 17:39:19,251 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 29 [2018-11-18 17:39:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:19,251 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2018-11-18 17:39:19,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-18 17:39:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2018-11-18 17:39:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 17:39:19,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:19,252 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 17:39:19,252 INFO L423 AbstractCegarLoop]: === Iteration 6 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:19,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:19,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2044105726, now seen corresponding path program 1 times [2018-11-18 17:39:19,252 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:19,252 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:19,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:39:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:19,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:19,370 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 17:39:19,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:19,485 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 17:39:19,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:19,486 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:19,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:19,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:19,530 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 17:39:19,542 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,550 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 2 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:39:19,555 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,556 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,557 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,558 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,558 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 23 treesize of output 45 [2018-11-18 17:39:19,566 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,568 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,569 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,570 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:39:19,579 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,580 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,581 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,583 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:39:19,584 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:19,617 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:19,638 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:19,689 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,690 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 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:39:19,698 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,700 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,701 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 20 treesize of output 34 [2018-11-18 17:39:19,706 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,707 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,708 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,710 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 45 [2018-11-18 17:39:19,710 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:19,726 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:19,740 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:19,768 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:19,794 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:19,840 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 52 treesize of output 48 [2018-11-18 17:39:19,848 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,857 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 48 treesize of output 48 [2018-11-18 17:39:19,890 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,892 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,893 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 43 treesize of output 52 [2018-11-18 17:39:19,926 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,927 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,928 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,928 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:19,929 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 59 [2018-11-18 17:39:19,979 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,981 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,982 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,983 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:19,983 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:19,984 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2018-11-18 17:39:19,984 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,016 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,035 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,075 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,077 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,082 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,091 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 45 treesize of output 62 [2018-11-18 17:39:20,157 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,159 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,161 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,162 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,164 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,165 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:20,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 74 [2018-11-18 17:39:20,256 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,257 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,259 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,260 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,260 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,261 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,262 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,263 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,266 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2018-11-18 17:39:20,267 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,314 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,315 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,316 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,317 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,318 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,318 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:20,319 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 44 [2018-11-18 17:39:20,319 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,352 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,391 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,392 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,393 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,393 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:20,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 63 [2018-11-18 17:39:20,431 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,432 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,433 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,434 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:20,435 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:20,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2018-11-18 17:39:20,436 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,456 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,486 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,513 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,525 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:20,565 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-11-18 17:39:20,566 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:73, output treesize:102 [2018-11-18 17:39:20,894 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 17:39:20,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:21,693 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 17:39:21,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:39:21,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9, 6] total 27 [2018-11-18 17:39:21,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-18 17:39:21,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-18 17:39:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2018-11-18 17:39:21,715 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 27 states. [2018-11-18 17:39:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:24,163 INFO L93 Difference]: Finished difference Result 120 states and 125 transitions. [2018-11-18 17:39:24,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 17:39:24,164 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 43 [2018-11-18 17:39:24,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:24,165 INFO L225 Difference]: With dead ends: 120 [2018-11-18 17:39:24,165 INFO L226 Difference]: Without dead ends: 120 [2018-11-18 17:39:24,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 17:39:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-18 17:39:24,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 115. [2018-11-18 17:39:24,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-18 17:39:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2018-11-18 17:39:24,172 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 43 [2018-11-18 17:39:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:24,172 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2018-11-18 17:39:24,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-18 17:39:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2018-11-18 17:39:24,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-18 17:39:24,173 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:24,173 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:39:24,174 INFO L423 AbstractCegarLoop]: === Iteration 7 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:24,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:24,174 INFO L82 PathProgramCache]: Analyzing trace with hash -563031445, now seen corresponding path program 3 times [2018-11-18 17:39:24,174 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:24,174 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:24,187 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 17:39:25,245 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:39:25,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:39:25,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:25,456 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 17:39:25,456 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:26,567 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 17:39:26,570 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:26,570 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:26,577 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:39:27,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:39:27,794 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:39:27,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:27,807 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 52 treesize of output 48 [2018-11-18 17:39:27,818 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,827 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 48 treesize of output 48 [2018-11-18 17:39:27,864 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,868 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,885 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,892 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 45 treesize of output 62 [2018-11-18 17:39:27,966 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,972 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,979 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:27,979 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:27,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 72 [2018-11-18 17:39:28,032 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,037 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,043 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,048 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,049 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:28,049 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 41 [2018-11-18 17:39:28,050 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,090 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,182 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,193 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,196 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,200 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,209 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,213 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,229 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 76 [2018-11-18 17:39:28,341 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,345 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,348 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,351 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,354 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,358 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,364 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,367 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,383 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,384 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 49 [2018-11-18 17:39:28,384 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,516 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,520 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,523 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,527 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,528 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:28,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 48 [2018-11-18 17:39:28,529 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,646 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,733 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,817 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,824 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,825 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 40 treesize of output 49 [2018-11-18 17:39:28,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,873 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,876 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,877 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:28,877 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 57 [2018-11-18 17:39:28,938 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,943 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,948 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,952 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:28,953 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:28,953 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2018-11-18 17:39:28,954 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:28,989 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,025 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,107 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,149 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 21 [2018-11-18 17:39:29,217 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:29,235 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 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 17:39:29,241 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 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:39:29,245 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 17:39:29,250 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 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 45 [2018-11-18 17:39:29,250 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,266 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,277 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,318 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:29,319 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:29,320 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 45 [2018-11-18 17:39:29,326 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:39:29,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:39:29,332 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,360 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,376 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:29,403 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:29,431 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:29,488 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-11-18 17:39:29,488 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:73, output treesize:102 [2018-11-18 17:39:30,744 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 17:39:30,744 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:31,422 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-11-18 17:39:32,004 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2018-11-18 17:39:32,672 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2018-11-18 17:39:33,641 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2018-11-18 17:39:34,664 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2018-11-18 17:39:35,908 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2018-11-18 17:39:36,914 WARN L180 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2018-11-18 17:39:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:39:37,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:39:37,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 14, 20] total 64 [2018-11-18 17:39:37,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-11-18 17:39:37,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-11-18 17:39:37,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=761, Invalid=3271, Unknown=0, NotChecked=0, Total=4032 [2018-11-18 17:39:37,026 INFO L87 Difference]: Start difference. First operand 115 states and 122 transitions. Second operand 64 states. [2018-11-18 17:39:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:40,220 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2018-11-18 17:39:40,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:39:40,223 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 53 [2018-11-18 17:39:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:40,224 INFO L225 Difference]: With dead ends: 113 [2018-11-18 17:39:40,224 INFO L226 Difference]: Without dead ends: 113 [2018-11-18 17:39:40,225 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 134 SyntacticMatches, 14 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=761, Invalid=3271, Unknown=0, NotChecked=0, Total=4032 [2018-11-18 17:39:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-18 17:39:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-11-18 17:39:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-11-18 17:39:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-11-18 17:39:40,231 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 53 [2018-11-18 17:39:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:40,231 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-11-18 17:39:40,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-11-18 17:39:40,231 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-11-18 17:39:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 17:39:40,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:40,235 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 17:39:40,235 INFO L423 AbstractCegarLoop]: === Iteration 8 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:40,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2056218446, now seen corresponding path program 1 times [2018-11-18 17:39:40,236 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:40,236 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:40,260 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:39:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:40,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:40,438 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 59 treesize of output 55 [2018-11-18 17:39:40,451 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,470 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 55 treesize of output 55 [2018-11-18 17:39:40,475 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,482 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,512 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 51 treesize of output 55 [2018-11-18 17:39:40,615 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,616 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,618 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,623 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,648 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 50 treesize of output 67 [2018-11-18 17:39:40,808 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-11-18 17:39:40,817 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,819 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,821 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,825 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,827 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,828 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,830 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,831 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,833 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,839 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,848 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 93 [2018-11-18 17:39:40,856 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 87 treesize of output 81 [2018-11-18 17:39:40,856 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:40,944 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,946 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,947 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,949 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,950 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,957 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:40,957 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:40,965 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 91 [2018-11-18 17:39:40,965 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-18 17:39:41,071 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:41,197 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,198 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,200 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,201 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,203 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,204 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,206 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,206 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 91 [2018-11-18 17:39:41,211 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 74 [2018-11-18 17:39:41,211 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:41,237 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:41,349 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:39:41,515 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,518 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,521 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,522 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 52 treesize of output 67 [2018-11-18 17:39:41,594 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,595 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,599 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,600 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,602 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,603 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,605 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 72 [2018-11-18 17:39:41,610 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 40 treesize of output 66 [2018-11-18 17:39:41,611 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:41,630 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:41,654 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:41,793 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:39:41,953 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 49 treesize of output 45 [2018-11-18 17:39:41,980 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,982 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,985 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:41,986 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 41 treesize of output 56 [2018-11-18 17:39:42,039 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:42,042 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:42,043 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:42,044 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:42,044 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:42,045 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 72 [2018-11-18 17:39:42,051 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 44 treesize of output 64 [2018-11-18 17:39:42,052 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:42,069 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:42,084 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:42,104 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:42,253 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:39:42,402 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:39:42,553 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 20 dim-0 vars, and 6 xjuncts. [2018-11-18 17:39:42,553 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 5 variables, input treesize:59, output treesize:367 [2018-11-18 17:39:42,688 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 17:39:42,688 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:39:42,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:42,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:39:42,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:39:42,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:39:42,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:39:42,691 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 3 states. [2018-11-18 17:39:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:42,836 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2018-11-18 17:39:42,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:39:42,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-11-18 17:39:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:42,837 INFO L225 Difference]: With dead ends: 112 [2018-11-18 17:39:42,837 INFO L226 Difference]: Without dead ends: 112 [2018-11-18 17:39:42,837 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 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 17:39:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-18 17:39:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-11-18 17:39:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-11-18 17:39:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2018-11-18 17:39:42,841 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 60 [2018-11-18 17:39:42,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:42,842 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2018-11-18 17:39:42,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:39:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2018-11-18 17:39:42,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 17:39:42,842 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:42,843 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 17:39:42,843 INFO L423 AbstractCegarLoop]: === Iteration 9 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:42,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2056218447, now seen corresponding path program 1 times [2018-11-18 17:39:42,843 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:42,843 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:42,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:43,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:43,020 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 38 treesize of output 37 [2018-11-18 17:39:43,029 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,037 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 37 treesize of output 40 [2018-11-18 17:39:43,041 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,044 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,052 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 43 [2018-11-18 17:39:43,104 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,105 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,106 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,107 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,111 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,127 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 58 [2018-11-18 17:39:43,200 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,201 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,202 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,204 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,205 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,206 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,207 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,208 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,209 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,212 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2018-11-18 17:39:43,213 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,259 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,261 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,262 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,263 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,264 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,264 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 37 [2018-11-18 17:39:43,265 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,297 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,331 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,333 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,334 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,335 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 37 treesize of output 51 [2018-11-18 17:39:43,364 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,365 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,367 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,368 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,369 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,370 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,370 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,371 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 28 treesize of output 29 [2018-11-18 17:39:43,372 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,386 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,413 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,446 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 31 treesize of output 30 [2018-11-18 17:39:43,461 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,463 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,465 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,466 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 47 [2018-11-18 17:39:43,508 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,509 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,510 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,511 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,511 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:43,512 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 31 treesize of output 29 [2018-11-18 17:39:43,512 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,527 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,542 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,579 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,594 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,617 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 18 treesize of output 21 [2018-11-18 17:39:43,631 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,646 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 21 treesize of output 27 [2018-11-18 17:39:43,653 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:39:43,661 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:39:43,670 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 22 treesize of output 41 [2018-11-18 17:39:43,670 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,687 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,701 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,746 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,755 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,769 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:39:43,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:39:43,777 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 45 [2018-11-18 17:39:43,778 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,802 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,836 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,841 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:43,842 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 55 [2018-11-18 17:39:43,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:39:43,849 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,870 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:43,896 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:43,932 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:43,970 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:44,035 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:39:44,035 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:59, output treesize:140 [2018-11-18 17:39:44,130 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 17:39:44,130 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:39:44,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:39:44,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:39:44,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:39:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:39:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:39:44,132 INFO L87 Difference]: Start difference. First operand 112 states and 117 transitions. Second operand 4 states. [2018-11-18 17:39:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:44,338 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2018-11-18 17:39:44,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:39:44,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-18 17:39:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:44,340 INFO L225 Difference]: With dead ends: 112 [2018-11-18 17:39:44,340 INFO L226 Difference]: Without dead ends: 112 [2018-11-18 17:39:44,340 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 17:39:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-18 17:39:44,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-11-18 17:39:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-11-18 17:39:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2018-11-18 17:39:44,343 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 60 [2018-11-18 17:39:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:44,343 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2018-11-18 17:39:44,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:39:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2018-11-18 17:39:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 17:39:44,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:44,344 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 17:39:44,344 INFO L423 AbstractCegarLoop]: === Iteration 10 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:44,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:44,345 INFO L82 PathProgramCache]: Analyzing trace with hash -334329447, now seen corresponding path program 1 times [2018-11-18 17:39:44,347 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:44,348 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:44,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:44,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:44,549 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 38 treesize of output 37 [2018-11-18 17:39:44,568 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,576 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 37 treesize of output 40 [2018-11-18 17:39:44,587 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 34 treesize of output 33 [2018-11-18 17:39:44,613 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,618 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,624 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,625 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 31 treesize of output 47 [2018-11-18 17:39:44,669 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,670 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,677 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,679 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,680 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,682 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,683 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 17:39:44,683 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:44,726 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:44,759 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:44,850 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,867 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,875 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 36 treesize of output 43 [2018-11-18 17:39:44,931 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,933 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,938 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,939 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,956 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:44,972 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 64 [2018-11-18 17:39:45,066 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,073 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,089 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,094 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,097 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,104 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,139 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,140 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:45,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2018-11-18 17:39:45,141 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,284 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,286 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,295 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,297 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,299 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,301 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,304 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,304 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 37 [2018-11-18 17:39:45,304 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,390 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,508 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,535 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,535 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 37 treesize of output 51 [2018-11-18 17:39:45,592 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,605 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,609 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,613 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,614 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:45,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2018-11-18 17:39:45,615 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,668 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,759 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,864 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,906 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:45,971 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 18 treesize of output 21 [2018-11-18 17:39:45,979 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:45,991 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 21 treesize of output 27 [2018-11-18 17:39:45,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:39:46,003 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:39:46,009 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 22 treesize of output 41 [2018-11-18 17:39:46,009 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,024 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,037 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,079 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,086 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,100 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:39:46,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:39:46,109 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 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 45 [2018-11-18 17:39:46,110 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,129 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,166 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,168 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,171 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 55 [2018-11-18 17:39:46,178 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:39:46,179 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,204 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:46,228 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:46,262 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:46,296 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:46,362 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:39:46,362 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:59, output treesize:140 [2018-11-18 17:39:46,498 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 17:39:46,498 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:46,812 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 17:39:46,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:46,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:46,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:46,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:46,876 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 38 treesize of output 37 [2018-11-18 17:39:46,889 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,897 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 37 treesize of output 40 [2018-11-18 17:39:46,909 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 34 treesize of output 33 [2018-11-18 17:39:46,937 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,942 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,948 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,949 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 47 [2018-11-18 17:39:46,998 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:46,999 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,006 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,011 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,012 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 28 treesize of output 29 [2018-11-18 17:39:47,012 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,049 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,079 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,151 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,165 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,172 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 36 treesize of output 43 [2018-11-18 17:39:47,232 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,242 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,250 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 58 [2018-11-18 17:39:47,298 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,308 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,311 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,316 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,316 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:47,316 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2018-11-18 17:39:47,317 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,364 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,466 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,469 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,477 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,480 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,536 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 40 treesize of output 64 [2018-11-18 17:39:47,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,622 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,625 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,628 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,635 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,641 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,646 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2018-11-18 17:39:47,647 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,771 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,774 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,785 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,792 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,806 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,847 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:47,847 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:47,848 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2018-11-18 17:39:47,849 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:47,953 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,067 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,163 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,211 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,274 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 18 treesize of output 21 [2018-11-18 17:39:48,286 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:48,298 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 21 treesize of output 27 [2018-11-18 17:39:48,304 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:39:48,310 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:39:48,316 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 22 treesize of output 41 [2018-11-18 17:39:48,316 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,330 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,342 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,387 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:48,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:48,407 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:39:48,414 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:48,418 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:48,419 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 55 [2018-11-18 17:39:48,426 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:39:48,427 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,448 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:39:48,490 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 45 [2018-11-18 17:39:48,490 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,509 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:48,533 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:48,568 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:48,603 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:39:48,669 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:39:48,669 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:62, output treesize:149 [2018-11-18 17:39:48,968 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 17:39:48,968 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:49,782 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 17:39:49,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:39:49,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7, 8] total 19 [2018-11-18 17:39:49,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 17:39:49,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 17:39:49,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-11-18 17:39:49,799 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 20 states. [2018-11-18 17:39:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:39:50,775 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2018-11-18 17:39:50,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:39:50,776 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 66 [2018-11-18 17:39:50,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:39:50,777 INFO L225 Difference]: With dead ends: 133 [2018-11-18 17:39:50,777 INFO L226 Difference]: Without dead ends: 133 [2018-11-18 17:39:50,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-11-18 17:39:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-11-18 17:39:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2018-11-18 17:39:50,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-11-18 17:39:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2018-11-18 17:39:50,780 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 66 [2018-11-18 17:39:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:39:50,781 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2018-11-18 17:39:50,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 17:39:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2018-11-18 17:39:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-18 17:39:50,781 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:39:50,782 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 17:39:50,782 INFO L423 AbstractCegarLoop]: === Iteration 11 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:39:50,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:39:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1689760566, now seen corresponding path program 1 times [2018-11-18 17:39:50,782 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:39:50,782 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:50,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:50,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:51,251 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 17:39:51,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:52,097 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 17:39:52,098 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 17:39:52,163 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 17:39:52,163 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 17:39:52,227 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 17:39:52,227 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 17:39:52,284 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 17:39:52,284 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 17:39:52,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:39:52,484 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:39:52,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:39:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:39:52,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:39:52,544 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 52 treesize of output 48 [2018-11-18 17:39:52,554 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,563 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 48 treesize of output 48 [2018-11-18 17:39:52,597 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,601 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,622 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,631 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 47 treesize of output 62 [2018-11-18 17:39:52,720 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,722 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,730 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,734 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,749 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,749 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:52,757 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 76 [2018-11-18 17:39:52,854 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,857 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,861 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,864 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:52,864 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:52,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 48 [2018-11-18 17:39:52,865 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:52,997 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,001 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,005 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,011 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,015 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,032 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,033 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:53,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 49 [2018-11-18 17:39:53,034 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,150 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,257 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,266 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,268 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,270 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,273 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 61 [2018-11-18 17:39:53,322 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,325 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,327 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,330 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,331 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:53,332 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-11-18 17:39:53,332 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,379 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,477 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,568 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,574 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,575 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 42 treesize of output 49 [2018-11-18 17:39:53,625 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,638 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,641 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,644 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,646 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,646 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 0 case distinctions, treesize of input 34 treesize of output 57 [2018-11-18 17:39:53,711 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,715 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,719 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:53,719 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:39:53,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-11-18 17:39:53,720 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,756 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,792 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,879 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,917 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:53,979 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 21 [2018-11-18 17:39:53,987 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:54,000 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 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 17:39:54,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:54,011 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:39:54,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 45 [2018-11-18 17:39:54,017 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:39:54,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:39:54,023 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:54,047 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:54,062 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:54,097 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 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:39:54,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 17:39:54,107 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 45 [2018-11-18 17:39:54,107 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:39:54,124 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:54,136 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:39:54,159 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:54,189 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:39:54,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-11-18 17:39:54,245 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:76, output treesize:108 [2018-11-18 17:39:55,012 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 17:39:55,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:39:56,353 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-11-18 17:39:56,453 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 17:39:56,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:39:56,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 9] total 32 [2018-11-18 17:39:56,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 17:39:56,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 17:39:56,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 17:39:56,471 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand 33 states. [2018-11-18 17:39:59,972 WARN L180 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-11-18 17:40:00,618 WARN L180 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-11-18 17:40:01,348 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-11-18 17:40:02,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:40:02,260 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-11-18 17:40:02,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 17:40:02,261 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 71 [2018-11-18 17:40:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:40:02,262 INFO L225 Difference]: With dead ends: 146 [2018-11-18 17:40:02,262 INFO L226 Difference]: Without dead ends: 146 [2018-11-18 17:40:02,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=358, Invalid=2398, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 17:40:02,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-18 17:40:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2018-11-18 17:40:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-11-18 17:40:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 143 transitions. [2018-11-18 17:40:02,266 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 143 transitions. Word has length 71 [2018-11-18 17:40:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:40:02,267 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 143 transitions. [2018-11-18 17:40:02,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 17:40:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 143 transitions. [2018-11-18 17:40:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-18 17:40:02,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:40:02,268 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 17:40:02,268 INFO L423 AbstractCegarLoop]: === Iteration 12 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:40:02,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:40:02,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1387430427, now seen corresponding path program 1 times [2018-11-18 17:40:02,269 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:40:02,269 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:02,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:40:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:40:02,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:02,438 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 17:40:02,438 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:02,491 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 17:40:02,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:40:02,493 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:02,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:40:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:40:02,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:02,594 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 17:40:02,594 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:40:02,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:40:02,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 14 [2018-11-18 17:40:02,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:40:02,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:40:02,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:40:02,612 INFO L87 Difference]: Start difference. First operand 136 states and 143 transitions. Second operand 14 states. [2018-11-18 17:40:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:40:03,107 INFO L93 Difference]: Finished difference Result 150 states and 153 transitions. [2018-11-18 17:40:03,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:40:03,108 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2018-11-18 17:40:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:40:03,109 INFO L225 Difference]: With dead ends: 150 [2018-11-18 17:40:03,109 INFO L226 Difference]: Without dead ends: 150 [2018-11-18 17:40:03,109 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-18 17:40:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-11-18 17:40:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2018-11-18 17:40:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-11-18 17:40:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2018-11-18 17:40:03,112 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 83 [2018-11-18 17:40:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:40:03,112 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 153 transitions. [2018-11-18 17:40:03,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:40:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 153 transitions. [2018-11-18 17:40:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-18 17:40:03,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:40:03,114 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 17:40:03,114 INFO L423 AbstractCegarLoop]: === Iteration 13 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:40:03,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:40:03,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1233112201, now seen corresponding path program 2 times [2018-11-18 17:40:03,115 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:40:03,115 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:03,129 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 17:40:03,178 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 17:40:03,179 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:40:03,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:03,197 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 52 treesize of output 48 [2018-11-18 17:40:03,209 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,217 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 48 treesize of output 48 [2018-11-18 17:40:03,255 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,275 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,291 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 45 treesize of output 62 [2018-11-18 17:40:03,365 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,378 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,382 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,384 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,392 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,409 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 74 [2018-11-18 17:40:03,523 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,530 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,534 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,541 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,541 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:03,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 48 [2018-11-18 17:40:03,542 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:03,680 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,682 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,685 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,689 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,692 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,695 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,699 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,702 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,706 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,721 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 49 [2018-11-18 17:40:03,722 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:03,822 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:03,936 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,939 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,942 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,943 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:03,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 63 [2018-11-18 17:40:03,994 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:03,997 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,001 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,004 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,004 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:04,005 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2018-11-18 17:40:04,005 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,046 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,139 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,231 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,239 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,240 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 40 treesize of output 49 [2018-11-18 17:40:04,282 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,295 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,298 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,301 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,305 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,305 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 0 case distinctions, treesize of input 34 treesize of output 57 [2018-11-18 17:40:04,365 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,369 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,376 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,379 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,384 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,391 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,392 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 37 [2018-11-18 17:40:04,392 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,431 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,472 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,556 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,595 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 21 [2018-11-18 17:40:04,665 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,673 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 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 17:40:04,680 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,681 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:04,681 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 45 [2018-11-18 17:40:04,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:40:04,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:40:04,693 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,716 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,730 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,764 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 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:40:04,769 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 17:40:04,774 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 45 [2018-11-18 17:40:04,774 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,789 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,801 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:04,827 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:04,852 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:04,911 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 17:40:04,911 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 5 variables, input treesize:76, output treesize:108 [2018-11-18 17:40:05,291 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 17:40:05,291 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:05,557 WARN L180 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:40:05,990 WARN L180 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:40:07,125 WARN L180 SmtUtils]: Spent 967.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:40:07,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:40:07,127 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:07,134 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:40:07,151 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 17:40:07,151 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:40:07,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:07,163 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 52 treesize of output 48 [2018-11-18 17:40:07,172 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,181 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 48 treesize of output 48 [2018-11-18 17:40:07,218 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,229 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,230 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 43 treesize of output 52 [2018-11-18 17:40:07,264 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,274 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,276 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,279 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,282 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,282 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 0 case distinctions, treesize of input 34 treesize of output 57 [2018-11-18 17:40:07,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,347 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,349 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,352 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,354 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,358 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,359 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 37 [2018-11-18 17:40:07,359 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:07,394 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:07,435 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:07,538 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,543 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,566 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,577 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 45 treesize of output 62 [2018-11-18 17:40:07,654 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,665 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,668 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,671 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,679 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,682 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,698 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 74 [2018-11-18 17:40:07,807 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,811 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,815 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,818 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,822 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,826 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,830 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,831 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 48 [2018-11-18 17:40:07,831 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:07,955 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,959 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,962 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,966 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,970 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,976 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,982 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,989 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:07,995 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,027 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 49 [2018-11-18 17:40:08,028 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,144 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,253 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,264 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,267 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,269 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,273 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 61 [2018-11-18 17:40:08,324 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,327 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,331 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,335 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,339 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,347 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,348 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 37 [2018-11-18 17:40:08,348 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,395 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,485 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,590 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,630 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,696 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 21 [2018-11-18 17:40:08,706 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 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 17:40:08,728 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,730 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:08,731 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 45 [2018-11-18 17:40:08,736 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:40:08,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:40:08,742 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,767 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,782 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,816 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 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:40:08,820 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 17:40:08,826 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 45 [2018-11-18 17:40:08,826 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,841 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,853 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:08,878 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:08,903 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:08,961 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 17:40:08,961 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 5 variables, input treesize:76, output treesize:108 [2018-11-18 17:40:09,045 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 17:40:09,045 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:09,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:40:09,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 17:40:09,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:40:09,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:40:09,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:40:09,190 INFO L87 Difference]: Start difference. First operand 146 states and 153 transitions. Second operand 7 states. [2018-11-18 17:40:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:40:09,904 INFO L93 Difference]: Finished difference Result 145 states and 149 transitions. [2018-11-18 17:40:09,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:40:09,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2018-11-18 17:40:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:40:09,906 INFO L225 Difference]: With dead ends: 145 [2018-11-18 17:40:09,906 INFO L226 Difference]: Without dead ends: 145 [2018-11-18 17:40:09,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:40:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-11-18 17:40:09,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-11-18 17:40:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-11-18 17:40:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 149 transitions. [2018-11-18 17:40:09,909 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 149 transitions. Word has length 84 [2018-11-18 17:40:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:40:09,909 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 149 transitions. [2018-11-18 17:40:09,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:40:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 149 transitions. [2018-11-18 17:40:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-18 17:40:09,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:40:09,911 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 17:40:09,911 INFO L423 AbstractCegarLoop]: === Iteration 14 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:40:09,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:40:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1289869218, now seen corresponding path program 2 times [2018-11-18 17:40:09,911 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:40:09,911 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:09,927 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:40:10,127 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:40:10,127 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:40:10,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:10,626 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 17:40:10,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:12,603 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 17:40:12,603 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 17:40:12,693 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 17:40:12,693 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 17:40:12,755 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 17:40:12,755 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 17:40:12,802 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 17:40:12,802 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 17:40:13,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:40:13,051 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:13,058 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:40:13,121 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:40:13,121 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:40:13,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:13,136 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 17:40:13,146 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,154 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 17:40:13,158 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 27 [2018-11-18 17:40:13,164 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,165 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,166 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 20 treesize of output 34 [2018-11-18 17:40:13,172 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,173 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,174 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,175 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 45 [2018-11-18 17:40:13,175 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,191 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,204 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,238 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,239 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,240 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,241 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,241 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 23 treesize of output 45 [2018-11-18 17:40:13,249 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,251 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,253 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,254 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:40:13,261 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,263 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,264 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,266 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:40:13,267 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,295 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,312 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,337 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:13,361 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:13,409 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 52 treesize of output 48 [2018-11-18 17:40:13,417 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,426 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 48 treesize of output 48 [2018-11-18 17:40:13,458 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,460 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,461 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 45 treesize of output 52 [2018-11-18 17:40:13,493 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,495 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,497 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,498 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,498 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 0 case distinctions, treesize of input 34 treesize of output 57 [2018-11-18 17:40:13,539 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,540 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,541 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,542 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:13,542 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2018-11-18 17:40:13,543 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,558 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,570 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,608 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,609 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,614 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,622 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 47 treesize of output 62 [2018-11-18 17:40:13,688 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,689 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,690 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,690 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:13,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 70 [2018-11-18 17:40:13,729 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,730 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,731 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,732 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,732 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:13,733 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 41 [2018-11-18 17:40:13,733 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,752 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,786 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,789 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,790 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,791 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,793 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,794 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,797 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,807 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 74 [2018-11-18 17:40:13,894 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,895 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,896 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,897 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,898 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,899 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,900 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,901 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,902 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,905 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 49 [2018-11-18 17:40:13,906 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,955 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,957 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,958 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,959 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,960 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:13,961 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:13,961 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 44 [2018-11-18 17:40:13,961 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:13,999 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:14,030 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:14,057 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:14,069 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:14,112 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 7 dim-0 vars, and 2 xjuncts. [2018-11-18 17:40:14,112 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:76, output treesize:108 [2018-11-18 17:40:15,477 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 17:40:15,477 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:20,009 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2018-11-18 17:40:20,139 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 17:40:20,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:40:20,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 14] total 45 [2018-11-18 17:40:20,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 17:40:20,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 17:40:20,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=2503, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 17:40:20,159 INFO L87 Difference]: Start difference. First operand 145 states and 149 transitions. Second operand 46 states. [2018-11-18 17:40:27,744 WARN L180 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2018-11-18 17:40:29,072 WARN L180 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2018-11-18 17:40:30,402 WARN L180 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2018-11-18 17:40:31,495 WARN L180 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-11-18 17:40:32,952 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2018-11-18 17:40:34,367 WARN L180 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2018-11-18 17:40:35,433 WARN L180 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2018-11-18 17:40:36,703 WARN L180 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-11-18 17:40:38,555 WARN L180 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2018-11-18 17:40:39,739 WARN L180 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2018-11-18 17:40:40,487 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2018-11-18 17:40:41,039 WARN L180 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2018-11-18 17:40:41,950 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-11-18 17:40:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:40:41,950 INFO L93 Difference]: Finished difference Result 201 states and 210 transitions. [2018-11-18 17:40:41,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 17:40:41,951 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 95 [2018-11-18 17:40:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:40:41,951 INFO L225 Difference]: With dead ends: 201 [2018-11-18 17:40:41,951 INFO L226 Difference]: Without dead ends: 201 [2018-11-18 17:40:41,952 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 268 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=863, Invalid=6109, Unknown=0, NotChecked=0, Total=6972 [2018-11-18 17:40:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-11-18 17:40:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 182. [2018-11-18 17:40:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-11-18 17:40:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2018-11-18 17:40:41,956 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 95 [2018-11-18 17:40:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:40:41,956 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions. [2018-11-18 17:40:41,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 17:40:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions. [2018-11-18 17:40:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-18 17:40:41,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:40:41,957 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 17:40:41,957 INFO L423 AbstractCegarLoop]: === Iteration 15 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:40:41,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:40:41,958 INFO L82 PathProgramCache]: Analyzing trace with hash 688517482, now seen corresponding path program 1 times [2018-11-18 17:40:41,958 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:40:41,958 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:41,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:40:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:40:42,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:42,224 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 17:40:42,224 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:42,399 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 17:40:42,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:40:42,402 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:42,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:40:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:40:42,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:42,478 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 17:40:42,487 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,499 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 17:40:42,512 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,540 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 17:40:42,547 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,549 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,552 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,553 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,555 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,555 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 55 [2018-11-18 17:40:42,562 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,566 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,568 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,569 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:40:42,570 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,593 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,630 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,632 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,632 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 27 treesize of output 41 [2018-11-18 17:40:42,638 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,639 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,641 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 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 45 [2018-11-18 17:40:42,642 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,663 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,692 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:40:42,753 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 17:40:42,760 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,762 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,763 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:40:42,770 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,772 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,773 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,773 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 22 treesize of output 41 [2018-11-18 17:40:42,774 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,789 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,801 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:42,836 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:40:42,874 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:40:42,935 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 38 treesize of output 37 [2018-11-18 17:40:42,947 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 40 [2018-11-18 17:40:42,961 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 34 treesize of output 33 [2018-11-18 17:40:42,978 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,980 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,982 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:42,983 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 47 [2018-11-18 17:40:43,015 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,016 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,018 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,019 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,020 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,022 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,022 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 28 treesize of output 29 [2018-11-18 17:40:43,023 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,035 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,048 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,077 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,081 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,088 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 36 treesize of output 43 [2018-11-18 17:40:43,142 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,143 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,145 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,146 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,150 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,167 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 64 [2018-11-18 17:40:43,237 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,238 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,240 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,241 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,242 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,243 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,246 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,247 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:43,247 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2018-11-18 17:40:43,248 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,294 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,297 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,298 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,299 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,299 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:43,300 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2018-11-18 17:40:43,300 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,332 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,370 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,373 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,376 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,377 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 37 treesize of output 51 [2018-11-18 17:40:43,408 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,411 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,412 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,412 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:40:43,413 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:40:43,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2018-11-18 17:40:43,414 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,431 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,453 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,476 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,486 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:40:43,551 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:40:43,551 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:59, output treesize:140 [2018-11-18 17:40:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 17:40:44,074 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2018-11-18 17:40:45,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:40:45,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 11, 6] total 31 [2018-11-18 17:40:45,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 17:40:45,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 17:40:45,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2018-11-18 17:40:45,096 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand 31 states. [2018-11-18 17:40:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:40:47,810 INFO L93 Difference]: Finished difference Result 196 states and 205 transitions. [2018-11-18 17:40:47,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 17:40:47,811 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 113 [2018-11-18 17:40:47,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:40:47,813 INFO L225 Difference]: With dead ends: 196 [2018-11-18 17:40:47,813 INFO L226 Difference]: Without dead ends: 196 [2018-11-18 17:40:47,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 419 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=278, Invalid=1528, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 17:40:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-11-18 17:40:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2018-11-18 17:40:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-11-18 17:40:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 202 transitions. [2018-11-18 17:40:47,817 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 202 transitions. Word has length 113 [2018-11-18 17:40:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:40:47,817 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 202 transitions. [2018-11-18 17:40:47,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 17:40:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 202 transitions. [2018-11-18 17:40:47,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-18 17:40:47,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:40:47,818 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 17:40:47,819 INFO L423 AbstractCegarLoop]: === Iteration 16 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:40:47,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:40:47,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1782687110, now seen corresponding path program 3 times [2018-11-18 17:40:47,819 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:40:47,819 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:47,834 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 17:40:51,123 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:40:51,123 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:40:51,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:40:51,423 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 17:40:51,423 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:40:53,761 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 17:40:53,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:40:53,764 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:40:53,771 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:41:18,202 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:41:18,202 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:41:18,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:18,225 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 17:41:18,234 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,248 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 17:41:18,257 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,259 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,260 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,262 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,263 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 23 treesize of output 45 [2018-11-18 17:41:18,269 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,271 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,272 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,273 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 59 [2018-11-18 17:41:18,281 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,282 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,284 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,285 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 74 [2018-11-18 17:41:18,286 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,313 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,329 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,362 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,363 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 21 treesize of output 27 [2018-11-18 17:41:18,368 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,370 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,371 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 34 [2018-11-18 17:41:18,376 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,377 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,378 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,379 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 45 [2018-11-18 17:41:18,379 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,394 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,408 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,434 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:41:18,463 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:41:18,522 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 52 treesize of output 48 [2018-11-18 17:41:18,529 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,537 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 48 [2018-11-18 17:41:18,567 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,568 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,572 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,581 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 47 treesize of output 62 [2018-11-18 17:41:18,646 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,647 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,648 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,648 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:18,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 72 [2018-11-18 17:41:18,686 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,686 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,687 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,688 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,689 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:18,689 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 41 [2018-11-18 17:41:18,690 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,709 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,747 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,749 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,750 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,752 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,754 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,755 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,758 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,766 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 76 [2018-11-18 17:41:18,856 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,857 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,859 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,860 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,861 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,862 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,864 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:18,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 49 [2018-11-18 17:41:18,865 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,913 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,915 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,916 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,917 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,918 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:18,918 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:18,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 44 [2018-11-18 17:41:18,919 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,954 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:18,984 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:19,019 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,022 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,023 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 42 treesize of output 49 [2018-11-18 17:41:19,050 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,051 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,052 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,052 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:19,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 61 [2018-11-18 17:41:19,100 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,101 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,102 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,103 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:19,103 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:19,104 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2018-11-18 17:41:19,104 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:19,121 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:19,134 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:19,162 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:19,175 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:19,224 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 17:41:19,224 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 5 variables, input treesize:76, output treesize:108 [2018-11-18 17:41:21,362 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 17:41:21,362 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:41:22,609 WARN L180 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-11-18 17:41:23,440 WARN L180 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-18 17:41:25,229 WARN L180 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2018-11-18 17:41:25,760 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-11-18 17:41:26,373 WARN L180 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-11-18 17:41:26,925 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-11-18 17:41:28,293 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-11-18 17:41:28,875 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-11-18 17:41:29,573 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-11-18 17:41:30,370 WARN L180 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-11-18 17:41:31,253 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 17:41:32,391 WARN L180 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-18 17:41:32,564 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 17:41:32,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:41:32,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 18, 22] total 74 [2018-11-18 17:41:32,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-11-18 17:41:32,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-11-18 17:41:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=908, Invalid=4494, Unknown=0, NotChecked=0, Total=5402 [2018-11-18 17:41:32,591 INFO L87 Difference]: Start difference. First operand 191 states and 202 transitions. Second operand 74 states. [2018-11-18 17:41:40,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:41:40,712 INFO L93 Difference]: Finished difference Result 165 states and 170 transitions. [2018-11-18 17:41:40,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:41:40,714 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 119 [2018-11-18 17:41:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:41:40,715 INFO L225 Difference]: With dead ends: 165 [2018-11-18 17:41:40,715 INFO L226 Difference]: Without dead ends: 165 [2018-11-18 17:41:40,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 388 SyntacticMatches, 14 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=1324, Invalid=5986, Unknown=0, NotChecked=0, Total=7310 [2018-11-18 17:41:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-11-18 17:41:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-11-18 17:41:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-18 17:41:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 170 transitions. [2018-11-18 17:41:40,720 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 170 transitions. Word has length 119 [2018-11-18 17:41:40,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:41:40,720 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 170 transitions. [2018-11-18 17:41:40,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-11-18 17:41:40,721 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 170 transitions. [2018-11-18 17:41:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-18 17:41:40,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:41:40,721 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 17:41:40,722 INFO L423 AbstractCegarLoop]: === Iteration 17 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:41:40,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:41:40,722 INFO L82 PathProgramCache]: Analyzing trace with hash 125766077, now seen corresponding path program 1 times [2018-11-18 17:41:40,722 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:41:40,722 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:41:40,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:41:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:41:41,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:41,074 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 21 treesize of output 24 [2018-11-18 17:41:41,079 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,095 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 24 treesize of output 30 [2018-11-18 17:41:41,102 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 24 treesize of output 26 [2018-11-18 17:41:41,107 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 23 treesize of output 25 [2018-11-18 17:41:41,116 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2018-11-18 17:41:41,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-11-18 17:41:41,130 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,143 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,152 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,161 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,195 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,200 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,208 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 26 treesize of output 36 [2018-11-18 17:41:41,215 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,218 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,227 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 32 treesize of output 42 [2018-11-18 17:41:41,236 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,240 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,247 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2018-11-18 17:41:41,258 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,261 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:41,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 51 [2018-11-18 17:41:41,268 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-18 17:41:41,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 53 [2018-11-18 17:41:41,323 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,366 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:41:41,432 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2018-11-18 17:41:41,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2018-11-18 17:41:41,442 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,456 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,514 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:41,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 36 [2018-11-18 17:41:41,587 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 31 [2018-11-18 17:41:41,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2018-11-18 17:41:41,600 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,608 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,619 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:41,671 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:41:41,726 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:41:41,776 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:41:41,836 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 15 dim-0 vars, and 6 xjuncts. [2018-11-18 17:41:41,836 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 4 variables, input treesize:21, output treesize:174 [2018-11-18 17:41:41,889 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 17:41:41,889 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:41:41,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:41:41,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:41:41,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:41:41,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:41:41,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:41:41,892 INFO L87 Difference]: Start difference. First operand 165 states and 170 transitions. Second operand 4 states. [2018-11-18 17:41:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:41:41,946 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2018-11-18 17:41:41,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:41:41,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-11-18 17:41:41,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:41:41,947 INFO L225 Difference]: With dead ends: 164 [2018-11-18 17:41:41,947 INFO L226 Difference]: Without dead ends: 164 [2018-11-18 17:41:41,948 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 123 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 17:41:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-11-18 17:41:41,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-11-18 17:41:41,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-11-18 17:41:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 168 transitions. [2018-11-18 17:41:41,951 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 168 transitions. Word has length 126 [2018-11-18 17:41:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:41:41,951 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 168 transitions. [2018-11-18 17:41:41,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:41:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 168 transitions. [2018-11-18 17:41:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-18 17:41:41,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:41:41,952 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 17:41:41,952 INFO L423 AbstractCegarLoop]: === Iteration 18 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:41:41,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:41:41,952 INFO L82 PathProgramCache]: Analyzing trace with hash 125766078, now seen corresponding path program 1 times [2018-11-18 17:41:41,953 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:41:41,953 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:41:41,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:41:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:41:42,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:42,347 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 20 treesize of output 23 [2018-11-18 17:41:42,361 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,371 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 23 treesize of output 29 [2018-11-18 17:41:42,378 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,392 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,400 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 25 treesize of output 35 [2018-11-18 17:41:42,420 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,444 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,452 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 31 treesize of output 41 [2018-11-18 17:41:42,537 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,544 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,548 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,552 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,553 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2018-11-18 17:41:42,553 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:42,735 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,739 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,757 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,761 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,765 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,770 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,785 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:42,786 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 17:41:42,786 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:42,931 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,075 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 26 treesize of output 28 [2018-11-18 17:41:43,106 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,117 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,120 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,124 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,125 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 13 [2018-11-18 17:41:43,125 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,186 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,237 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,350 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 17:41:43,361 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 22 treesize of output 24 [2018-11-18 17:41:43,383 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,391 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,397 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,398 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 25 treesize of output 13 [2018-11-18 17:41:43,398 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,441 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,484 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,551 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,590 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,623 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 18 treesize of output 21 [2018-11-18 17:41:43,630 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,638 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 21 treesize of output 27 [2018-11-18 17:41:43,642 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 21 treesize of output 23 [2018-11-18 17:41:43,652 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 20 treesize of output 22 [2018-11-18 17:41:43,660 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 17:41:43,660 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,672 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,682 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,727 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,730 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,747 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 23 treesize of output 33 [2018-11-18 17:41:43,757 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,768 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,779 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 39 [2018-11-18 17:41:43,785 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,791 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:43,792 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 35 treesize of output 62 [2018-11-18 17:41:43,792 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,841 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 33 treesize of output 52 [2018-11-18 17:41:43,841 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,874 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:41:43,939 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 27 treesize of output 33 [2018-11-18 17:41:43,947 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 22 treesize of output 37 [2018-11-18 17:41:43,947 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:43,964 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:44,005 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:41:44,055 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:44,096 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:44,155 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:41:44,155 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 6 variables, input treesize:42, output treesize:154 [2018-11-18 17:41:44,334 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 17:41:44,334 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:41:44,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:41:44,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:41:44,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:41:44,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:41:44,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:41:44,337 INFO L87 Difference]: Start difference. First operand 164 states and 168 transitions. Second operand 4 states. [2018-11-18 17:41:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:41:44,494 INFO L93 Difference]: Finished difference Result 164 states and 167 transitions. [2018-11-18 17:41:44,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:41:44,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-11-18 17:41:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:41:44,496 INFO L225 Difference]: With dead ends: 164 [2018-11-18 17:41:44,496 INFO L226 Difference]: Without dead ends: 164 [2018-11-18 17:41:44,496 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 123 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 17:41:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-11-18 17:41:44,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2018-11-18 17:41:44,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-11-18 17:41:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2018-11-18 17:41:44,500 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 126 [2018-11-18 17:41:44,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:41:44,500 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 167 transitions. [2018-11-18 17:41:44,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:41:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 167 transitions. [2018-11-18 17:41:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-18 17:41:44,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:41:44,501 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 17:41:44,501 INFO L423 AbstractCegarLoop]: === Iteration 19 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:41:44,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:41:44,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1056910184, now seen corresponding path program 1 times [2018-11-18 17:41:44,501 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:41:44,502 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/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 17:41:44,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:41:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:41:44,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:44,912 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 20 treesize of output 23 [2018-11-18 17:41:44,920 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:44,929 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 23 treesize of output 29 [2018-11-18 17:41:44,936 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 23 treesize of output 25 [2018-11-18 17:41:44,945 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 22 treesize of output 24 [2018-11-18 17:41:44,962 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:44,967 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:44,969 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:44,970 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:44,971 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 23 treesize of output 13 [2018-11-18 17:41:44,971 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:44,997 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,024 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,105 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,117 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,124 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 25 treesize of output 35 [2018-11-18 17:41:45,135 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 29 treesize of output 35 [2018-11-18 17:41:45,170 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,183 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,186 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,189 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,190 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 17 [2018-11-18 17:41:45,190 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,257 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,350 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,368 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,374 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 27 treesize of output 41 [2018-11-18 17:41:45,440 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,444 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,447 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,451 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,452 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 40 treesize of output 36 [2018-11-18 17:41:45,452 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,607 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,610 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,621 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,627 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,631 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,650 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:45,651 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 17:41:45,651 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,782 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,867 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,920 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:45,964 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,003 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 18 treesize of output 21 [2018-11-18 17:41:46,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,026 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 21 treesize of output 27 [2018-11-18 17:41:46,039 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,046 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,065 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 23 treesize of output 33 [2018-11-18 17:41:46,073 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 27 treesize of output 33 [2018-11-18 17:41:46,081 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 22 treesize of output 37 [2018-11-18 17:41:46,081 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,107 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,165 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,167 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,179 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,196 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2018-11-18 17:41:46,201 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 33 treesize of output 52 [2018-11-18 17:41:46,201 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,259 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,260 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,261 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,268 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:46,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 27 treesize of output 62 [2018-11-18 17:41:46,269 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,311 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:41:46,347 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:41:46,414 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 21 treesize of output 23 [2018-11-18 17:41:46,424 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 20 treesize of output 22 [2018-11-18 17:41:46,432 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 17:41:46,432 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,444 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,455 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:46,507 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:46,550 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:46,610 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:41:46,610 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 6 variables, input treesize:42, output treesize:154 [2018-11-18 17:41:46,836 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 17:41:46,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:41:47,141 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 17:41:47,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:41:47,143 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:41:47,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:41:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:41:47,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:47,240 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 20 treesize of output 23 [2018-11-18 17:41:47,252 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,258 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 23 treesize of output 29 [2018-11-18 17:41:47,263 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,289 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,295 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 25 treesize of output 35 [2018-11-18 17:41:47,312 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 29 treesize of output 35 [2018-11-18 17:41:47,351 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,363 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,367 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,373 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,374 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 17 [2018-11-18 17:41:47,374 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:47,445 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:47,549 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,556 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,570 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,578 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 27 treesize of output 41 [2018-11-18 17:41:47,644 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,649 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,652 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,655 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,656 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 38 treesize of output 36 [2018-11-18 17:41:47,656 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:47,816 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,818 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,825 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,828 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,830 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,833 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,840 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:47,841 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 17:41:47,841 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:47,954 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,020 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,108 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 17:41:48,121 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 22 treesize of output 24 [2018-11-18 17:41:48,141 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,150 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,152 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,155 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,155 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 25 treesize of output 13 [2018-11-18 17:41:48,156 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,205 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,249 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,333 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,374 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,429 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 18 treesize of output 21 [2018-11-18 17:41:48,433 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,447 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 21 treesize of output 27 [2018-11-18 17:41:48,452 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 21 treesize of output 23 [2018-11-18 17:41:48,458 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 20 treesize of output 22 [2018-11-18 17:41:48,468 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 17:41:48,468 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,479 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,488 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,534 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,540 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,552 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 23 treesize of output 33 [2018-11-18 17:41:48,563 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,573 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,585 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 39 [2018-11-18 17:41:48,591 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 33 treesize of output 52 [2018-11-18 17:41:48,592 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,653 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,655 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,656 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,662 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:48,663 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 27 treesize of output 62 [2018-11-18 17:41:48,664 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,701 INFO L267 ElimStorePlain]: Start of recursive call 19: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:41:48,761 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 27 treesize of output 33 [2018-11-18 17:41:48,768 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 22 treesize of output 37 [2018-11-18 17:41:48,768 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,791 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:48,830 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:41:48,879 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:48,920 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:41:48,979 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:41:48,979 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 6 variables, input treesize:45, output treesize:166 [2018-11-18 17:41:49,386 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 17:41:49,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:41:50,115 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 17:41:50,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:41:50,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7, 8] total 19 [2018-11-18 17:41:50,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 17:41:50,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 17:41:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2018-11-18 17:41:50,135 INFO L87 Difference]: Start difference. First operand 164 states and 167 transitions. Second operand 20 states. [2018-11-18 17:41:51,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:41:51,053 INFO L93 Difference]: Finished difference Result 185 states and 189 transitions. [2018-11-18 17:41:51,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:41:51,054 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 132 [2018-11-18 17:41:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:41:51,055 INFO L225 Difference]: With dead ends: 185 [2018-11-18 17:41:51,055 INFO L226 Difference]: Without dead ends: 185 [2018-11-18 17:41:51,055 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 504 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-11-18 17:41:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-11-18 17:41:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2018-11-18 17:41:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-11-18 17:41:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 183 transitions. [2018-11-18 17:41:51,057 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 183 transitions. Word has length 132 [2018-11-18 17:41:51,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:41:51,057 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 183 transitions. [2018-11-18 17:41:51,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 17:41:51,057 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 183 transitions. [2018-11-18 17:41:51,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-18 17:41:51,058 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:41:51,058 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 17:41:51,058 INFO L423 AbstractCegarLoop]: === Iteration 20 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:41:51,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:41:51,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1474783874, now seen corresponding path program 1 times [2018-11-18 17:41:51,059 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:41:51,059 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 34 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 34 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:41:51,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:41:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:41:51,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-18 17:41:51,768 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:41:52,614 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 17:41:52,615 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 17:41:52,688 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 17:41:52,689 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 17:41:52,744 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 17:41:52,744 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 17:41:52,797 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 17:41:52,797 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 17:41:52,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:41:52,982 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:41:52,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:41:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:41:53,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:41:53,087 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 38 treesize of output 37 [2018-11-18 17:41:53,099 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,109 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 37 treesize of output 40 [2018-11-18 17:41:53,122 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 34 treesize of output 33 [2018-11-18 17:41:53,151 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,156 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,161 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,162 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 47 [2018-11-18 17:41:53,204 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,208 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,210 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,212 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,212 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:41:53,213 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 31 treesize of output 29 [2018-11-18 17:41:53,213 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:53,253 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:53,316 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:53,430 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,448 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,457 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 36 treesize of output 43 [2018-11-18 17:41:53,516 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,526 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,534 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,535 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 58 [2018-11-18 17:41:53,581 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,585 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,596 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,601 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,604 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,607 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,612 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,613 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 30 treesize of output 33 [2018-11-18 17:41:53,613 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:53,671 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:53,796 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,810 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,815 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,850 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,867 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 64 [2018-11-18 17:41:53,949 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,953 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,957 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,960 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,962 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,966 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,970 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:53,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2018-11-18 17:41:53,971 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,116 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,119 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,121 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,131 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,133 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,135 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,137 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,141 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,143 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,154 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 41 [2018-11-18 17:41:54,154 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,251 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,345 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,436 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,484 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,558 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 18 treesize of output 21 [2018-11-18 17:41:54,565 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 17:41:54,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:41:54,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:41:54,607 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 22 treesize of output 41 [2018-11-18 17:41:54,607 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,622 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,633 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,674 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,681 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:41:54,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:41:54,702 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 45 [2018-11-18 17:41:54,702 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,724 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,769 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,770 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,774 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:41:54,775 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 55 [2018-11-18 17:41:54,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:41:54,782 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,805 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:41:54,831 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:41:54,869 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:41:54,907 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:41:54,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:41:54,975 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:62, output treesize:149 [2018-11-18 17:41:55,751 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 17:41:55,751 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:41:57,174 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-11-18 17:41:57,271 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 17:41:57,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:41:57,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 9] total 32 [2018-11-18 17:41:57,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 17:41:57,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 17:41:57,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 17:41:57,290 INFO L87 Difference]: Start difference. First operand 177 states and 183 transitions. Second operand 33 states. [2018-11-18 17:42:01,321 WARN L180 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-11-18 17:42:01,868 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-11-18 17:42:02,492 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-11-18 17:42:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:42:03,132 INFO L93 Difference]: Finished difference Result 198 states and 203 transitions. [2018-11-18 17:42:03,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 17:42:03,133 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2018-11-18 17:42:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:42:03,133 INFO L225 Difference]: With dead ends: 198 [2018-11-18 17:42:03,133 INFO L226 Difference]: Without dead ends: 198 [2018-11-18 17:42:03,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 388 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=358, Invalid=2398, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 17:42:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-11-18 17:42:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 188. [2018-11-18 17:42:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-11-18 17:42:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 194 transitions. [2018-11-18 17:42:03,138 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 194 transitions. Word has length 137 [2018-11-18 17:42:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:42:03,138 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 194 transitions. [2018-11-18 17:42:03,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 17:42:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 194 transitions. [2018-11-18 17:42:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 17:42:03,139 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:42:03,139 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:42:03,139 INFO L423 AbstractCegarLoop]: === Iteration 21 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:42:03,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:42:03,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1147065712, now seen corresponding path program 1 times [2018-11-18 17:42:03,140 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:42:03,140 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 36 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 36 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:42:03,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:42:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:42:03,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:03,453 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:03,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:42:03,533 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:42:03,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:42:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:42:03,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-11-18 17:42:03,663 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:42:03,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:42:03,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 14 [2018-11-18 17:42:03,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:42:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:42:03,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:42:03,682 INFO L87 Difference]: Start difference. First operand 188 states and 194 transitions. Second operand 14 states. [2018-11-18 17:42:04,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:42:04,199 INFO L93 Difference]: Finished difference Result 202 states and 204 transitions. [2018-11-18 17:42:04,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:42:04,200 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 149 [2018-11-18 17:42:04,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:42:04,201 INFO L225 Difference]: With dead ends: 202 [2018-11-18 17:42:04,201 INFO L226 Difference]: Without dead ends: 202 [2018-11-18 17:42:04,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-18 17:42:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-11-18 17:42:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2018-11-18 17:42:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-11-18 17:42:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 204 transitions. [2018-11-18 17:42:04,205 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 204 transitions. Word has length 149 [2018-11-18 17:42:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:42:04,205 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 204 transitions. [2018-11-18 17:42:04,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:42:04,205 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 204 transitions. [2018-11-18 17:42:04,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-18 17:42:04,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:42:04,206 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:42:04,206 INFO L423 AbstractCegarLoop]: === Iteration 22 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:42:04,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:42:04,206 INFO L82 PathProgramCache]: Analyzing trace with hash -996301978, now seen corresponding path program 2 times [2018-11-18 17:42:04,207 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:42:04,207 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 38 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 38 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:42:04,242 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 17:42:04,301 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 17:42:04,301 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:42:04,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:04,320 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 38 treesize of output 37 [2018-11-18 17:42:04,326 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,335 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 37 treesize of output 40 [2018-11-18 17:42:04,339 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,353 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 43 [2018-11-18 17:42:04,432 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,433 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,436 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,438 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,443 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,465 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 58 [2018-11-18 17:42:04,532 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,533 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,534 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,535 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,536 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,537 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,537 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2018-11-18 17:42:04,538 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,574 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,575 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,577 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,579 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,580 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,581 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,582 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,583 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,584 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,587 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 41 [2018-11-18 17:42:04,588 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,623 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,665 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,667 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,669 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,670 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 37 treesize of output 51 [2018-11-18 17:42:04,700 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,701 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,703 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,704 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,705 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,705 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,706 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,707 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 30 treesize of output 29 [2018-11-18 17:42:04,707 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,722 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,751 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,783 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 31 treesize of output 30 [2018-11-18 17:42:04,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,801 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,803 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,803 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 47 [2018-11-18 17:42:04,834 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,835 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,836 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,837 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,839 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,840 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 28 treesize of output 29 [2018-11-18 17:42:04,840 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,853 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,866 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,894 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,908 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,936 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 18 treesize of output 21 [2018-11-18 17:42:04,942 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:04,954 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 21 treesize of output 27 [2018-11-18 17:42:04,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:42:04,969 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:42:04,977 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 22 treesize of output 41 [2018-11-18 17:42:04,977 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:04,991 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:05,002 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:05,041 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:05,049 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:05,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:42:05,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:42:05,078 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 45 [2018-11-18 17:42:05,078 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:05,100 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:05,140 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:05,142 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:05,145 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:05,146 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 55 [2018-11-18 17:42:05,152 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:42:05,153 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:05,175 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:05,200 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:42:05,236 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:05,272 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:05,341 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 17:42:05,341 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 5 variables, input treesize:62, output treesize:149 [2018-11-18 17:42:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2018-11-18 17:42:05,694 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:07,956 WARN L180 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:42:08,968 WARN L180 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:42:09,632 WARN L180 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:42:09,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:42:09,635 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:42:09,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:42:09,676 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 17:42:09,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:42:09,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:09,687 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 38 treesize of output 37 [2018-11-18 17:42:09,708 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,717 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 37 treesize of output 40 [2018-11-18 17:42:09,730 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,747 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,755 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 36 treesize of output 43 [2018-11-18 17:42:09,812 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,813 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,819 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,821 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,855 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 64 [2018-11-18 17:42:09,954 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,958 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,969 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,974 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,979 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:09,984 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,005 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,005 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:42:10,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2018-11-18 17:42:10,006 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,163 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,168 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,180 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,184 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,190 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,194 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,200 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,201 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 37 [2018-11-18 17:42:10,201 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,302 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,435 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,441 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,447 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,447 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 37 treesize of output 51 [2018-11-18 17:42:10,502 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,507 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,515 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,517 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,520 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,523 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,526 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,527 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 30 treesize of output 29 [2018-11-18 17:42:10,527 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,577 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,671 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,753 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 31 treesize of output 30 [2018-11-18 17:42:10,778 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,783 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,788 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,789 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 47 [2018-11-18 17:42:10,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,843 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,855 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,861 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,865 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:10,871 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 17:42:10,871 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,916 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:10,965 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,056 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,101 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,172 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 18 treesize of output 21 [2018-11-18 17:42:11,183 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:11,196 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 21 treesize of output 27 [2018-11-18 17:42:11,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:42:11,211 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:42:11,216 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 22 treesize of output 41 [2018-11-18 17:42:11,217 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,233 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,244 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,282 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:11,291 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:11,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:42:11,318 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:11,322 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:11,323 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 55 [2018-11-18 17:42:11,330 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:42:11,330 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,354 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,400 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:42:11,406 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 45 [2018-11-18 17:42:11,406 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,427 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:11,454 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:42:11,490 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:11,527 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:11,598 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 17:42:11,598 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 5 variables, input treesize:62, output treesize:149 [2018-11-18 17:42:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2018-11-18 17:42:11,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:11,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:42:11,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 17:42:11,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:42:11,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:42:11,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:42:11,922 INFO L87 Difference]: Start difference. First operand 198 states and 204 transitions. Second operand 7 states. [2018-11-18 17:42:12,346 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2018-11-18 17:42:12,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:42:12,636 INFO L93 Difference]: Finished difference Result 197 states and 200 transitions. [2018-11-18 17:42:12,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:42:12,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 150 [2018-11-18 17:42:12,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:42:12,639 INFO L225 Difference]: With dead ends: 197 [2018-11-18 17:42:12,639 INFO L226 Difference]: Without dead ends: 197 [2018-11-18 17:42:12,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:42:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-11-18 17:42:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-11-18 17:42:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-11-18 17:42:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 200 transitions. [2018-11-18 17:42:12,643 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 200 transitions. Word has length 150 [2018-11-18 17:42:12,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:42:12,643 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 200 transitions. [2018-11-18 17:42:12,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:42:12,643 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 200 transitions. [2018-11-18 17:42:12,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-18 17:42:12,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:42:12,644 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:42:12,644 INFO L423 AbstractCegarLoop]: === Iteration 23 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:42:12,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:42:12,644 INFO L82 PathProgramCache]: Analyzing trace with hash 343128026, now seen corresponding path program 2 times [2018-11-18 17:42:12,644 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:42:12,645 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 40 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 40 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:42:12,657 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:42:13,001 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:42:13,001 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:42:13,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-18 17:42:13,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:15,373 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 17:42:15,373 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 17:42:15,444 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 17:42:15,444 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 17:42:15,504 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 17:42:15,504 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 17:42:15,549 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 17:42:15,549 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 17:42:15,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:42:15,784 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:42:15,792 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:42:15,898 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:42:15,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:42:15,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:15,918 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 17:42:15,931 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:15,944 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 17:42:15,951 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 17:42:15,958 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:15,959 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:15,960 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:42:15,968 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:15,970 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:15,971 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:15,972 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 22 treesize of output 41 [2018-11-18 17:42:15,972 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:15,985 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:15,997 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,034 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,041 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,065 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 17:42:16,071 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,072 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,073 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 27 treesize of output 41 [2018-11-18 17:42:16,078 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,079 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,080 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,081 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 45 [2018-11-18 17:42:16,081 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,104 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,147 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,149 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,150 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,155 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,156 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,157 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 55 [2018-11-18 17:42:16,166 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,171 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,173 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,174 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:42:16,176 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,197 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,225 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:42:16,262 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:16,299 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:16,361 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 38 treesize of output 37 [2018-11-18 17:42:16,370 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,378 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 37 treesize of output 40 [2018-11-18 17:42:16,384 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-11-18 17:42:16,401 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,403 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,406 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,406 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 31 treesize of output 47 [2018-11-18 17:42:16,437 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,438 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,440 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,441 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,443 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,444 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,444 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 28 treesize of output 29 [2018-11-18 17:42:16,444 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,457 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,469 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,500 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,509 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 36 treesize of output 43 [2018-11-18 17:42:16,563 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,565 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,567 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,568 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 58 [2018-11-18 17:42:16,606 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,607 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,609 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,610 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,611 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,612 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,613 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,614 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 30 treesize of output 33 [2018-11-18 17:42:16,614 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,632 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,666 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,667 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,670 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,671 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,676 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,691 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 64 [2018-11-18 17:42:16,769 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,770 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,772 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,774 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,775 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,777 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,778 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,779 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,780 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,783 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 41 [2018-11-18 17:42:16,784 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,834 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,835 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,838 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,839 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,840 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,842 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,843 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:16,844 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 37 [2018-11-18 17:42:16,844 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,878 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,903 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,925 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,936 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:16,995 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:42:16,995 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:62, output treesize:149 [2018-11-18 17:42:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:18,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:23,062 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2018-11-18 17:42:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:23,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:42:23,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 14] total 45 [2018-11-18 17:42:23,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 17:42:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 17:42:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=2503, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 17:42:23,235 INFO L87 Difference]: Start difference. First operand 197 states and 200 transitions. Second operand 46 states. [2018-11-18 17:42:31,137 WARN L180 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2018-11-18 17:42:32,376 WARN L180 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2018-11-18 17:42:33,864 WARN L180 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2018-11-18 17:42:35,011 WARN L180 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-11-18 17:42:36,465 WARN L180 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-11-18 17:42:37,859 WARN L180 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-11-18 17:42:38,728 WARN L180 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2018-11-18 17:42:39,704 WARN L180 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-11-18 17:42:41,346 WARN L180 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2018-11-18 17:42:42,309 WARN L180 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2018-11-18 17:42:43,100 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-11-18 17:42:43,715 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-11-18 17:42:44,619 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2018-11-18 17:42:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:42:44,623 INFO L93 Difference]: Finished difference Result 253 states and 261 transitions. [2018-11-18 17:42:44,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 17:42:44,623 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 161 [2018-11-18 17:42:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:42:44,625 INFO L225 Difference]: With dead ends: 253 [2018-11-18 17:42:44,625 INFO L226 Difference]: Without dead ends: 253 [2018-11-18 17:42:44,626 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 466 SyntacticMatches, 4 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1832 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=863, Invalid=6109, Unknown=0, NotChecked=0, Total=6972 [2018-11-18 17:42:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-11-18 17:42:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 234. [2018-11-18 17:42:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-11-18 17:42:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 243 transitions. [2018-11-18 17:42:44,633 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 243 transitions. Word has length 161 [2018-11-18 17:42:44,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:42:44,633 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 243 transitions. [2018-11-18 17:42:44,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 17:42:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 243 transitions. [2018-11-18 17:42:44,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-18 17:42:44,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:42:44,634 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:42:44,634 INFO L423 AbstractCegarLoop]: === Iteration 24 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:42:44,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:42:44,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1289165791, now seen corresponding path program 1 times [2018-11-18 17:42:44,635 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:42:44,635 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 42 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 42 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:42:44,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:42:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:42:45,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:45,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:45,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:42:45,398 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:42:45,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:42:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:42:45,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:45,514 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 17:42:45,521 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,534 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 17:42:45,539 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 17:42:45,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 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 17:42:45,554 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,557 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,558 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,558 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 17:42:45,558 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,569 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,579 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,643 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,658 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 17:42:45,669 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 17:42:45,675 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,678 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,679 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,680 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 22 treesize of output 37 [2018-11-18 17:42:45,680 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,696 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,755 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,757 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,768 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,781 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 17:42:45,787 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,788 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,794 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,798 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,799 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,801 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,802 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 35 treesize of output 62 [2018-11-18 17:42:45,802 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,868 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,869 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,870 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:45,871 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 33 treesize of output 52 [2018-11-18 17:42:45,871 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:45,901 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:42:45,937 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:42:45,982 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:42:46,023 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:42:46,080 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 20 treesize of output 23 [2018-11-18 17:42:46,084 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,091 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 23 treesize of output 29 [2018-11-18 17:42:46,095 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 23 treesize of output 25 [2018-11-18 17:42:46,101 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 22 treesize of output 24 [2018-11-18 17:42:46,114 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,116 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,117 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,118 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,119 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 27 treesize of output 13 [2018-11-18 17:42:46,119 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,127 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,135 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,156 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,163 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 25 treesize of output 35 [2018-11-18 17:42:46,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 35 [2018-11-18 17:42:46,193 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,195 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,196 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,197 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,198 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 17 [2018-11-18 17:42:46,198 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,212 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,239 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,241 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,244 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,252 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 27 treesize of output 41 [2018-11-18 17:42:46,303 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,304 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,305 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,306 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,307 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 42 treesize of output 36 [2018-11-18 17:42:46,307 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,341 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,343 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,345 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,347 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,349 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,351 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:42:46,351 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 36 treesize of output 29 [2018-11-18 17:42:46,352 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,376 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,396 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,417 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,425 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:42:46,479 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:42:46,479 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 6 variables, input treesize:42, output treesize:154 [2018-11-18 17:42:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2018-11-18 17:42:47,049 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:42:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2018-11-18 17:42:47,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:42:47,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 11, 6] total 31 [2018-11-18 17:42:47,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 17:42:47,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 17:42:47,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2018-11-18 17:42:47,984 INFO L87 Difference]: Start difference. First operand 234 states and 243 transitions. Second operand 31 states. [2018-11-18 17:42:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:42:50,535 INFO L93 Difference]: Finished difference Result 248 states and 256 transitions. [2018-11-18 17:42:50,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 17:42:50,535 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 179 [2018-11-18 17:42:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:42:50,536 INFO L225 Difference]: With dead ends: 248 [2018-11-18 17:42:50,536 INFO L226 Difference]: Without dead ends: 248 [2018-11-18 17:42:50,536 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 683 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=278, Invalid=1528, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 17:42:50,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-11-18 17:42:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2018-11-18 17:42:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-11-18 17:42:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 253 transitions. [2018-11-18 17:42:50,540 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 253 transitions. Word has length 179 [2018-11-18 17:42:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:42:50,540 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 253 transitions. [2018-11-18 17:42:50,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 17:42:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 253 transitions. [2018-11-18 17:42:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-18 17:42:50,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:42:50,541 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 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] [2018-11-18 17:42:50,542 INFO L423 AbstractCegarLoop]: === Iteration 25 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:42:50,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:42:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash -456950478, now seen corresponding path program 3 times [2018-11-18 17:42:50,542 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:42:50,542 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 44 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 44 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:42:50,567 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 17:42:57,229 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:42:57,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:42:57,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:42:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:42:57,607 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:43:00,009 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:43:00,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:43:00,013 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:43:00,021 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:43:50,175 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:43:50,175 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:43:50,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:43:50,210 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 38 treesize of output 37 [2018-11-18 17:43:50,219 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,229 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 37 treesize of output 40 [2018-11-18 17:43:50,242 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,262 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,270 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 36 treesize of output 43 [2018-11-18 17:43:50,342 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,346 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,356 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,387 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,404 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 64 [2018-11-18 17:43:50,487 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,491 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,498 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,503 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,506 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,511 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,512 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2018-11-18 17:43:50,512 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:50,636 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,639 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,650 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,653 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,655 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,658 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,670 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,670 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:43:50,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2018-11-18 17:43:50,671 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:50,780 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:50,919 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,927 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,933 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,934 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 37 treesize of output 51 [2018-11-18 17:43:50,978 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,980 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,986 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,988 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,990 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,992 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,994 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:50,994 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 30 treesize of output 29 [2018-11-18 17:43:50,995 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,054 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,124 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,233 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 31 treesize of output 30 [2018-11-18 17:43:51,255 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,265 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,274 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,274 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 31 treesize of output 47 [2018-11-18 17:43:51,324 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,333 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,338 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,342 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,342 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 17:43:51,343 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 17:43:51,343 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,389 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,442 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,543 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,592 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,667 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 21 [2018-11-18 17:43:51,680 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,693 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 21 treesize of output 27 [2018-11-18 17:43:51,700 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 17:43:51,707 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 0 case distinctions, treesize of input 20 treesize of output 30 [2018-11-18 17:43:51,714 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 22 treesize of output 41 [2018-11-18 17:43:51,715 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,730 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,742 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,782 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,790 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,819 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 8 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 17:43:51,826 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,829 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:43:51,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 55 [2018-11-18 17:43:51,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 70 [2018-11-18 17:43:51,839 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,861 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,897 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 41 [2018-11-18 17:43:51,901 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 45 [2018-11-18 17:43:51,901 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,921 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:43:51,947 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:43:51,985 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:43:52,022 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:43:52,096 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 10 dim-0 vars, and 3 xjuncts. [2018-11-18 17:43:52,096 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:62, output treesize:149 [2018-11-18 17:43:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:43:54,103 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:43:55,513 WARN L180 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-11-18 17:43:56,384 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-18 17:43:57,718 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-11-18 17:43:58,748 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-11-18 17:43:59,402 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-11-18 17:44:00,671 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-11-18 17:44:02,628 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-11-18 17:44:04,305 WARN L180 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2018-11-18 17:44:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-18 17:44:04,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:44:04,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 17, 21] total 72 [2018-11-18 17:44:04,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-11-18 17:44:04,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-11-18 17:44:04,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=848, Invalid=4264, Unknown=0, NotChecked=0, Total=5112 [2018-11-18 17:44:04,512 INFO L87 Difference]: Start difference. First operand 243 states and 253 transitions. Second operand 72 states. [2018-11-18 17:44:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:12,210 INFO L93 Difference]: Finished difference Result 217 states and 221 transitions. [2018-11-18 17:44:12,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:44:12,212 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 185 [2018-11-18 17:44:12,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:12,213 INFO L225 Difference]: With dead ends: 217 [2018-11-18 17:44:12,213 INFO L226 Difference]: Without dead ends: 217 [2018-11-18 17:44:12,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 654 SyntacticMatches, 14 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2039 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=1252, Invalid=5720, Unknown=0, NotChecked=0, Total=6972 [2018-11-18 17:44:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-11-18 17:44:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-11-18 17:44:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-11-18 17:44:12,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 221 transitions. [2018-11-18 17:44:12,216 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 221 transitions. Word has length 185 [2018-11-18 17:44:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:12,217 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 221 transitions. [2018-11-18 17:44:12,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-11-18 17:44:12,217 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 221 transitions. [2018-11-18 17:44:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-18 17:44:12,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:12,218 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:44:12,218 INFO L423 AbstractCegarLoop]: === Iteration 26 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:12,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:12,218 INFO L82 PathProgramCache]: Analyzing trace with hash 701994202, now seen corresponding path program 1 times [2018-11-18 17:44:12,218 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:12,218 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 46 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 46 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:12,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:44:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:12,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:12,622 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 21 treesize of output 24 [2018-11-18 17:44:12,630 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,640 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 24 treesize of output 30 [2018-11-18 17:44:12,644 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,649 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,658 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 26 treesize of output 36 [2018-11-18 17:44:12,665 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,669 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,676 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 32 treesize of output 42 [2018-11-18 17:44:12,683 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,686 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,694 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2018-11-18 17:44:12,709 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,712 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:12,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 51 [2018-11-18 17:44:12,719 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-11-18 17:44:12,778 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 53 [2018-11-18 17:44:12,778 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:12,823 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:12,887 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2018-11-18 17:44:12,896 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2018-11-18 17:44:12,896 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:12,909 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:12,959 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:13,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 36 [2018-11-18 17:44:13,035 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 31 [2018-11-18 17:44:13,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2018-11-18 17:44:13,048 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,056 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,068 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,129 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:13,201 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 24 treesize of output 26 [2018-11-18 17:44:13,206 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 23 treesize of output 25 [2018-11-18 17:44:13,214 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2018-11-18 17:44:13,227 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-11-18 17:44:13,227 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,235 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,243 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,252 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:13,306 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:44:13,357 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:44:13,409 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 15 dim-0 vars, and 6 xjuncts. [2018-11-18 17:44:13,409 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 4 variables, input treesize:21, output treesize:174 [2018-11-18 17:44:13,507 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:13,507 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:44:13,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:44:13,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:44:13,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:44:13,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:44:13,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:44:13,511 INFO L87 Difference]: Start difference. First operand 217 states and 221 transitions. Second operand 4 states. [2018-11-18 17:44:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:13,583 INFO L93 Difference]: Finished difference Result 216 states and 219 transitions. [2018-11-18 17:44:13,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:44:13,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-11-18 17:44:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:13,585 INFO L225 Difference]: With dead ends: 216 [2018-11-18 17:44:13,585 INFO L226 Difference]: Without dead ends: 216 [2018-11-18 17:44:13,585 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 189 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 17:44:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-11-18 17:44:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-11-18 17:44:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-11-18 17:44:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 219 transitions. [2018-11-18 17:44:13,588 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 219 transitions. Word has length 192 [2018-11-18 17:44:13,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:13,588 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 219 transitions. [2018-11-18 17:44:13,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:44:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 219 transitions. [2018-11-18 17:44:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-18 17:44:13,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:13,589 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:44:13,589 INFO L423 AbstractCegarLoop]: === Iteration 27 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:13,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash 701994203, now seen corresponding path program 1 times [2018-11-18 17:44:13,590 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:13,590 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 47 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 47 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:13,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:14,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:14,100 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 17:44:14,106 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,119 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 17:44:14,124 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 17:44:14,134 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 17:44:14,149 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 17:44:14,150 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:14,158 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:14,167 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:14,205 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,212 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,224 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 17:44:14,229 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,240 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,253 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 29 treesize of output 39 [2018-11-18 17:44:14,257 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,272 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:14,280 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 35 treesize of output 42 [2018-11-18 17:44:14,281 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-18 17:44:14,380 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 17:44:14,381 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:14,429 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:14,517 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 17:44:14,530 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 17:44:14,531 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:14,542 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:14,602 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:14,660 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:14,714 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:14,772 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:14,772 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:44:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:14,847 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:44:14,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:44:14,850 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:44:14,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:44:14,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:44:14,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:44:14,851 INFO L87 Difference]: Start difference. First operand 216 states and 219 transitions. Second operand 4 states. [2018-11-18 17:44:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:14,941 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2018-11-18 17:44:14,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 17:44:14,941 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 192 [2018-11-18 17:44:14,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:14,942 INFO L225 Difference]: With dead ends: 216 [2018-11-18 17:44:14,942 INFO L226 Difference]: Without dead ends: 216 [2018-11-18 17:44:14,942 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 189 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 17:44:14,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-11-18 17:44:14,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-11-18 17:44:14,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-11-18 17:44:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 218 transitions. [2018-11-18 17:44:14,945 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 218 transitions. Word has length 192 [2018-11-18 17:44:14,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:14,946 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 218 transitions. [2018-11-18 17:44:14,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:44:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 218 transitions. [2018-11-18 17:44:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-18 17:44:14,947 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:14,947 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:44:14,947 INFO L423 AbstractCegarLoop]: === Iteration 28 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:14,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1748856955, now seen corresponding path program 1 times [2018-11-18 17:44:14,948 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:14,948 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 48 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 48 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:14,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:15,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:15,478 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 17:44:15,484 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,497 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 21 treesize of output 27 [2018-11-18 17:44:15,502 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,510 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,522 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 17:44:15,526 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,535 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,545 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 29 treesize of output 39 [2018-11-18 17:44:15,549 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,576 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:15,584 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 35 treesize of output 42 [2018-11-18 17:44:15,584 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-11-18 17:44:15,679 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 17:44:15,679 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:15,728 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:15,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 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 17:44:15,826 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 17:44:15,826 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:15,838 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:15,890 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:15,980 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 17:44:15,991 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 17:44:16,006 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 17:44:16,007 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:16,015 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:16,024 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:16,083 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:16,137 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:16,193 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:16,194 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:44:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:16,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:16,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:44:16,575 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:44:16,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:16,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:16,707 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 17:44:16,713 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,721 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 17:44:16,724 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,728 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,752 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 17:44:16,759 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 17:44:16,771 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 17:44:16,771 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:16,785 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:16,837 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,839 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,852 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,865 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 17:44:16,869 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,884 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:16,893 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 35 treesize of output 42 [2018-11-18 17:44:16,893 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-18 17:44:16,985 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 17:44:16,985 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:17,048 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:17,101 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:17,186 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 17:44:17,197 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 17:44:17,214 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 17:44:17,214 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:17,222 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:17,232 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:17,291 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:17,343 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:17,402 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:17,403 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:25, output treesize:118 [2018-11-18 17:44:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:17,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:18,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:44:18,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 7, 7] total 18 [2018-11-18 17:44:18,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 17:44:18,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 17:44:18,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-11-18 17:44:18,301 INFO L87 Difference]: Start difference. First operand 216 states and 218 transitions. Second operand 19 states. [2018-11-18 17:44:18,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:18,974 INFO L93 Difference]: Finished difference Result 237 states and 240 transitions. [2018-11-18 17:44:18,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:44:18,975 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 198 [2018-11-18 17:44:18,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:18,975 INFO L225 Difference]: With dead ends: 237 [2018-11-18 17:44:18,975 INFO L226 Difference]: Without dead ends: 237 [2018-11-18 17:44:18,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 770 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=385, Unknown=0, NotChecked=0, Total=552 [2018-11-18 17:44:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-11-18 17:44:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 229. [2018-11-18 17:44:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-11-18 17:44:18,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 234 transitions. [2018-11-18 17:44:18,978 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 234 transitions. Word has length 198 [2018-11-18 17:44:18,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:18,978 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 234 transitions. [2018-11-18 17:44:18,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 17:44:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 234 transitions. [2018-11-18 17:44:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-18 17:44:18,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:18,979 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1] [2018-11-18 17:44:18,980 INFO L423 AbstractCegarLoop]: === Iteration 29 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:18,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash -638114761, now seen corresponding path program 1 times [2018-11-18 17:44:18,980 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:18,980 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 50 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 50 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:18,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:19,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-11-18 17:44:19,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:20,741 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 17:44:20,742 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 17:44:20,819 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 17:44:20,819 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 17:44:20,887 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 17:44:20,888 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 17:44:20,956 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 17:44:20,956 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 17:44:21,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:44:21,137 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:44:21,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:21,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:21,274 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 20 treesize of output 23 [2018-11-18 17:44:21,282 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,289 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 23 treesize of output 29 [2018-11-18 17:44:21,296 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,307 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,315 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 25 treesize of output 35 [2018-11-18 17:44:21,324 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,335 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,342 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 31 treesize of output 41 [2018-11-18 17:44:21,399 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,402 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,403 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,405 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,406 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 38 treesize of output 36 [2018-11-18 17:44:21,406 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:21,592 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,594 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,604 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,606 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,609 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,610 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,617 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,618 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 17:44:21,618 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:21,723 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:21,821 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 26 treesize of output 28 [2018-11-18 17:44:21,852 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,860 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,863 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,866 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:21,867 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 25 treesize of output 13 [2018-11-18 17:44:21,867 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:21,932 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,016 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,105 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 17:44:22,122 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 22 treesize of output 24 [2018-11-18 17:44:22,154 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,163 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,165 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,168 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,168 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 23 treesize of output 13 [2018-11-18 17:44:22,169 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,211 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,260 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,321 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,370 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,400 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 18 treesize of output 21 [2018-11-18 17:44:22,406 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,419 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 21 treesize of output 27 [2018-11-18 17:44:22,433 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,441 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,448 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 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 17:44:22,454 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 27 treesize of output 33 [2018-11-18 17:44:22,460 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 22 treesize of output 37 [2018-11-18 17:44:22,461 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,478 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,528 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,529 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,533 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,544 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2018-11-18 17:44:22,551 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 33 treesize of output 52 [2018-11-18 17:44:22,551 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,609 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,610 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,612 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,619 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:22,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 27 treesize of output 62 [2018-11-18 17:44:22,621 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,662 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:44:22,702 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:22,767 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 21 treesize of output 23 [2018-11-18 17:44:22,776 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 20 treesize of output 22 [2018-11-18 17:44:22,784 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 17:44:22,784 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,795 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,806 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:22,854 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:22,896 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:22,957 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:22,957 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 6 variables, input treesize:45, output treesize:166 [2018-11-18 17:44:23,891 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:23,891 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:25,309 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-11-18 17:44:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:25,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:44:25,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 9] total 32 [2018-11-18 17:44:25,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 17:44:25,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 17:44:25,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 17:44:25,434 INFO L87 Difference]: Start difference. First operand 229 states and 234 transitions. Second operand 33 states. [2018-11-18 17:44:29,668 WARN L180 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-11-18 17:44:30,328 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2018-11-18 17:44:30,870 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-11-18 17:44:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:31,368 INFO L93 Difference]: Finished difference Result 250 states and 254 transitions. [2018-11-18 17:44:31,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 17:44:31,369 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 203 [2018-11-18 17:44:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:31,370 INFO L225 Difference]: With dead ends: 250 [2018-11-18 17:44:31,370 INFO L226 Difference]: Without dead ends: 250 [2018-11-18 17:44:31,370 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 586 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=358, Invalid=2398, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 17:44:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-11-18 17:44:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 240. [2018-11-18 17:44:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-11-18 17:44:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 245 transitions. [2018-11-18 17:44:31,374 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 245 transitions. Word has length 203 [2018-11-18 17:44:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:31,374 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 245 transitions. [2018-11-18 17:44:31,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 17:44:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 245 transitions. [2018-11-18 17:44:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-18 17:44:31,375 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:31,375 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:44:31,375 INFO L423 AbstractCegarLoop]: === Iteration 30 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:31,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1342308999, now seen corresponding path program 1 times [2018-11-18 17:44:31,376 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:31,376 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 52 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 52 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:31,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:31,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:31,847 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:31,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:44:31,928 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:44:31,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:44:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:44:32,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:32,045 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 21 treesize of output 24 [2018-11-18 17:44:32,050 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,059 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 24 treesize of output 30 [2018-11-18 17:44:32,063 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 24 treesize of output 26 [2018-11-18 17:44:32,068 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 23 treesize of output 25 [2018-11-18 17:44:32,075 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 27 [2018-11-18 17:44:32,087 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2018-11-18 17:44:32,087 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,096 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,104 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,113 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,142 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,147 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,157 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 26 treesize of output 36 [2018-11-18 17:44:32,166 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,184 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,199 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 32 treesize of output 42 [2018-11-18 17:44:32,212 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,219 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,228 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 48 [2018-11-18 17:44:32,239 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 53 [2018-11-18 17:44:32,239 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,297 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,308 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,313 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,318 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,323 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:32,331 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 51 [2018-11-18 17:44:32,331 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-18 17:44:32,381 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:32,454 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 46 [2018-11-18 17:44:32,465 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2018-11-18 17:44:32,466 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,481 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,544 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:32,615 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 30 treesize of output 36 [2018-11-18 17:44:32,622 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 31 [2018-11-18 17:44:32,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2018-11-18 17:44:32,635 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,643 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,654 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:32,717 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:44:32,773 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:44:32,823 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-11-18 17:44:32,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 20 dim-0 vars, and 6 xjuncts. [2018-11-18 17:44:32,875 INFO L202 ElimStorePlain]: Needed 17 recursive calls to eliminate 5 variables, input treesize:21, output treesize:173 [2018-11-18 17:44:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 804 trivial. 0 not checked. [2018-11-18 17:44:32,978 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:44:32,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:44:32,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 14 [2018-11-18 17:44:32,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:44:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:44:32,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:44:32,999 INFO L87 Difference]: Start difference. First operand 240 states and 245 transitions. Second operand 14 states. [2018-11-18 17:44:33,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:33,500 INFO L93 Difference]: Finished difference Result 254 states and 255 transitions. [2018-11-18 17:44:33,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:44:33,501 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2018-11-18 17:44:33,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:33,501 INFO L225 Difference]: With dead ends: 254 [2018-11-18 17:44:33,501 INFO L226 Difference]: Without dead ends: 254 [2018-11-18 17:44:33,502 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2018-11-18 17:44:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-11-18 17:44:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2018-11-18 17:44:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-11-18 17:44:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 255 transitions. [2018-11-18 17:44:33,504 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 255 transitions. Word has length 215 [2018-11-18 17:44:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:33,504 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 255 transitions. [2018-11-18 17:44:33,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:44:33,504 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 255 transitions. [2018-11-18 17:44:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-18 17:44:33,504 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:33,504 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:44:33,505 INFO L423 AbstractCegarLoop]: === Iteration 31 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:33,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash 423170691, now seen corresponding path program 2 times [2018-11-18 17:44:33,505 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:33,505 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 54 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 54 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:33,530 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 17:44:33,596 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 17:44:33,596 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:44:33,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:33,610 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 20 treesize of output 23 [2018-11-18 17:44:33,618 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,626 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2018-11-18 17:44:33,631 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,641 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,648 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 25 treesize of output 35 [2018-11-18 17:44:33,658 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,675 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,682 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 31 treesize of output 41 [2018-11-18 17:44:33,742 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,744 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,748 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,750 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,751 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,753 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,761 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,762 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 17:44:33,762 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:33,941 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,950 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,953 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,955 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:33,956 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 35 treesize of output 25 [2018-11-18 17:44:33,956 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,064 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,160 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 26 treesize of output 28 [2018-11-18 17:44:34,192 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,201 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,203 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,207 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,207 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 13 [2018-11-18 17:44:34,207 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,266 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,366 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,477 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 17:44:34,494 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 22 treesize of output 24 [2018-11-18 17:44:34,516 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,524 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,526 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,530 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,531 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 21 treesize of output 13 [2018-11-18 17:44:34,531 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,578 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,625 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,699 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,735 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,762 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 18 treesize of output 21 [2018-11-18 17:44:34,770 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,783 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 21 treesize of output 27 [2018-11-18 17:44:34,797 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,805 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,818 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 23 treesize of output 33 [2018-11-18 17:44:34,829 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,839 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,850 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 39 [2018-11-18 17:44:34,857 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 33 treesize of output 52 [2018-11-18 17:44:34,857 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,919 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,920 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,922 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,927 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:34,928 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 27 treesize of output 62 [2018-11-18 17:44:34,928 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:34,966 INFO L267 ElimStorePlain]: Start of recursive call 16: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:44:35,033 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 27 treesize of output 33 [2018-11-18 17:44:35,040 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 22 treesize of output 37 [2018-11-18 17:44:35,040 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:35,055 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:35,094 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:35,166 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 21 treesize of output 23 [2018-11-18 17:44:35,177 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 20 treesize of output 22 [2018-11-18 17:44:35,185 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 17:44:35,185 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:35,196 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:35,207 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:35,258 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:35,303 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:35,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:35,369 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 5 variables, input treesize:45, output treesize:166 [2018-11-18 17:44:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2018-11-18 17:44:35,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:37,852 WARN L180 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:44:39,500 WARN L180 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:44:40,020 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:44:40,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:44:40,022 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:44:40,031 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:44:40,052 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 17:44:40,052 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:44:40,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:40,060 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 20 treesize of output 23 [2018-11-18 17:44:40,067 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,074 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 23 treesize of output 29 [2018-11-18 17:44:40,080 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 23 treesize of output 25 [2018-11-18 17:44:40,091 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 22 treesize of output 24 [2018-11-18 17:44:40,108 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,115 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,118 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,120 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,121 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 23 treesize of output 13 [2018-11-18 17:44:40,121 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,152 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,213 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,331 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,347 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,354 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 25 treesize of output 35 [2018-11-18 17:44:40,379 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,401 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 31 treesize of output 41 [2018-11-18 17:44:40,455 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,458 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,459 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,462 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,462 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 38 treesize of output 36 [2018-11-18 17:44:40,463 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,635 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,638 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,647 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,649 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,651 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,654 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,661 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,661 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 17:44:40,662 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,756 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,864 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 26 treesize of output 28 [2018-11-18 17:44:40,887 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,895 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,897 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,899 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:40,900 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 13 [2018-11-18 17:44:40,900 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:40,951 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,010 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,081 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,120 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,148 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 18 treesize of output 21 [2018-11-18 17:44:41,154 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,167 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 21 treesize of output 27 [2018-11-18 17:44:41,172 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 21 treesize of output 23 [2018-11-18 17:44:41,182 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 20 treesize of output 22 [2018-11-18 17:44:41,190 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 17:44:41,191 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,202 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,212 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,271 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,278 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 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 17:44:41,302 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 27 treesize of output 33 [2018-11-18 17:44:41,310 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 22 treesize of output 37 [2018-11-18 17:44:41,310 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,327 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,387 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,388 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,402 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,415 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 39 [2018-11-18 17:44:41,424 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,431 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:41,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 35 treesize of output 62 [2018-11-18 17:44:41,432 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,485 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 33 treesize of output 52 [2018-11-18 17:44:41,485 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:41,518 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:44:41,557 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:41,602 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:41,647 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:41,739 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:41,739 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 5 variables, input treesize:45, output treesize:166 [2018-11-18 17:44:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2018-11-18 17:44:41,868 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:42,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:44:42,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 17:44:42,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:44:42,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:44:42,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:44:42,035 INFO L87 Difference]: Start difference. First operand 250 states and 255 transitions. Second operand 7 states. [2018-11-18 17:44:42,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:44:42,431 INFO L93 Difference]: Finished difference Result 249 states and 251 transitions. [2018-11-18 17:44:42,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:44:42,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2018-11-18 17:44:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:44:42,433 INFO L225 Difference]: With dead ends: 249 [2018-11-18 17:44:42,433 INFO L226 Difference]: Without dead ends: 249 [2018-11-18 17:44:42,433 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:44:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-11-18 17:44:42,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-11-18 17:44:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-11-18 17:44:42,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2018-11-18 17:44:42,436 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 216 [2018-11-18 17:44:42,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:44:42,437 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2018-11-18 17:44:42,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:44:42,437 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2018-11-18 17:44:42,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-18 17:44:42,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:44:42,438 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:44:42,438 INFO L423 AbstractCegarLoop]: === Iteration 32 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:44:42,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:44:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash -28701297, now seen corresponding path program 2 times [2018-11-18 17:44:42,439 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:44:42,439 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 56 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 56 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:44:42,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:44:43,010 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:44:43,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:44:43,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:43,671 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2018-11-18 17:44:43,671 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:45,488 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 17:44:45,488 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 17:44:45,556 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 17:44:45,556 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 17:44:45,612 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 17:44:45,613 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 17:44:45,660 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 17:44:45,661 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:71, output treesize:51 [2018-11-18 17:44:45,967 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2018-11-18 17:44:45,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:44:45,971 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:44:45,977 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:44:46,119 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:44:46,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:44:46,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:44:46,142 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 17:44:46,149 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,166 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 17:44:46,180 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,187 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,208 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 17:44:46,217 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 17:44:46,225 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,229 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,231 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,232 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 22 treesize of output 37 [2018-11-18 17:44:46,232 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,269 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,360 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,363 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,382 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,400 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 17:44:46,406 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,408 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,415 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,419 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,420 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,422 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,423 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 35 treesize of output 62 [2018-11-18 17:44:46,423 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,495 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,497 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,498 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 33 treesize of output 52 [2018-11-18 17:44:46,498 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,535 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:44:46,571 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:44:46,645 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 17:44:46,655 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 17:44:46,661 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,665 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,666 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,667 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 17:44:46,667 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,678 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,687 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,738 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:46,779 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:44:46,835 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 20 treesize of output 23 [2018-11-18 17:44:46,840 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,847 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 23 treesize of output 29 [2018-11-18 17:44:46,851 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,855 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,863 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 25 treesize of output 35 [2018-11-18 17:44:46,868 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 29 treesize of output 35 [2018-11-18 17:44:46,894 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,897 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,897 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,898 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,899 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 17 [2018-11-18 17:44:46,899 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,915 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:46,945 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,947 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,951 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:46,958 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 27 treesize of output 41 [2018-11-18 17:44:47,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,010 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,012 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,013 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,013 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 42 treesize of output 36 [2018-11-18 17:44:47,014 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,050 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,051 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,054 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,055 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,056 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,058 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,060 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,061 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 36 treesize of output 29 [2018-11-18 17:44:47,061 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,086 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,105 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,127 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 17:44:47,135 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 22 treesize of output 24 [2018-11-18 17:44:47,148 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,151 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,154 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:44:47,154 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 25 treesize of output 13 [2018-11-18 17:44:47,155 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,164 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,172 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,186 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,194 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:44:47,251 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 4 xjuncts. [2018-11-18 17:44:47,252 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 5 variables, input treesize:45, output treesize:166 [2018-11-18 17:44:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:48,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:44:53,185 WARN L180 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-11-18 17:44:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:44:53,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:44:53,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 14] total 46 [2018-11-18 17:44:53,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-18 17:44:53,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-18 17:44:53,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=2608, Unknown=0, NotChecked=0, Total=2970 [2018-11-18 17:44:53,353 INFO L87 Difference]: Start difference. First operand 249 states and 251 transitions. Second operand 47 states. [2018-11-18 17:44:59,918 WARN L180 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-11-18 17:45:01,468 WARN L180 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-11-18 17:45:02,921 WARN L180 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-11-18 17:45:04,013 WARN L180 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-11-18 17:45:05,020 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2018-11-18 17:45:06,273 WARN L180 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2018-11-18 17:45:06,953 WARN L180 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-11-18 17:45:07,665 WARN L180 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2018-11-18 17:45:08,447 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-11-18 17:45:09,174 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2018-11-18 17:45:09,707 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-11-18 17:45:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:45:10,099 INFO L93 Difference]: Finished difference Result 305 states and 312 transitions. [2018-11-18 17:45:10,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-18 17:45:10,100 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 227 [2018-11-18 17:45:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:45:10,100 INFO L225 Difference]: With dead ends: 305 [2018-11-18 17:45:10,100 INFO L226 Difference]: Without dead ends: 305 [2018-11-18 17:45:10,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 664 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1813 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=834, Invalid=5972, Unknown=0, NotChecked=0, Total=6806 [2018-11-18 17:45:10,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-11-18 17:45:10,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 286. [2018-11-18 17:45:10,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-11-18 17:45:10,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 294 transitions. [2018-11-18 17:45:10,105 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 294 transitions. Word has length 227 [2018-11-18 17:45:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:45:10,106 INFO L480 AbstractCegarLoop]: Abstraction has 286 states and 294 transitions. [2018-11-18 17:45:10,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-18 17:45:10,106 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 294 transitions. [2018-11-18 17:45:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-18 17:45:10,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:45:10,107 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:45:10,107 INFO L423 AbstractCegarLoop]: === Iteration 33 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:45:10,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:45:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1388242664, now seen corresponding path program 1 times [2018-11-18 17:45:10,108 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:45:10,108 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 58 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 58 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:45:10,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:45:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:45:10,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:45:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:45:10,699 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:45:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:45:10,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:45:10,898 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:45:10,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:45:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:45:11,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:45:11,045 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 17:45:11,053 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,066 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 17:45:11,071 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 17:45:11,083 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 17:45:11,096 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 17:45:11,096 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:45:11,104 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:45:11,113 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:45:11,153 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,161 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,169 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 17:45:11,172 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,177 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,186 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 29 treesize of output 39 [2018-11-18 17:45:11,189 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,198 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:45:11,206 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 35 treesize of output 42 [2018-11-18 17:45:11,207 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-18 17:45:11,298 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 17:45:11,299 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 17:45:11,347 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:45:11,437 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 17:45:11,445 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 17:45:11,445 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:45:11,458 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:45:11,516 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:45:11,578 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:45:11,634 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:45:11,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:45:11,695 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:45:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2018-11-18 17:45:11,928 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:45:11,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:45:11,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 11] total 24 [2018-11-18 17:45:11,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 17:45:11,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 17:45:11,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2018-11-18 17:45:11,950 INFO L87 Difference]: Start difference. First operand 286 states and 294 transitions. Second operand 24 states. [2018-11-18 17:45:12,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:45:12,799 INFO L93 Difference]: Finished difference Result 291 states and 297 transitions. [2018-11-18 17:45:12,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:45:12,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 245 [2018-11-18 17:45:12,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:45:12,801 INFO L225 Difference]: With dead ends: 291 [2018-11-18 17:45:12,801 INFO L226 Difference]: Without dead ends: 291 [2018-11-18 17:45:12,802 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 17:45:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-11-18 17:45:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 289. [2018-11-18 17:45:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-11-18 17:45:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 295 transitions. [2018-11-18 17:45:12,804 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 295 transitions. Word has length 245 [2018-11-18 17:45:12,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:45:12,804 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 295 transitions. [2018-11-18 17:45:12,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 17:45:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 295 transitions. [2018-11-18 17:45:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-18 17:45:12,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:45:12,805 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1] [2018-11-18 17:45:12,805 INFO L423 AbstractCegarLoop]: === Iteration 34 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:45:12,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:45:12,805 INFO L82 PathProgramCache]: Analyzing trace with hash 860647143, now seen corresponding path program 3 times [2018-11-18 17:45:12,806 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:45:12,806 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 60 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 60 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:45:12,826 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 17:45:24,122 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:45:24,122 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:45:24,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:45:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:45:24,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:45:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:45:27,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:45:27,139 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:45:27,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:46:22,730 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:46:22,730 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:46:22,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:22,772 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 17:46:22,782 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,798 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 17:46:22,812 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,819 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,835 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 17:46:22,846 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 17:46:22,851 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,854 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,855 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,856 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 22 treesize of output 37 [2018-11-18 17:46:22,856 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:22,873 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:22,932 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,934 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,945 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,958 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 17:46:22,965 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,966 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,967 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:22,968 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 33 treesize of output 52 [2018-11-18 17:46:22,969 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,027 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,029 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,030 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,031 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,037 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,040 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,042 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,043 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,044 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 27 treesize of output 62 [2018-11-18 17:46:23,044 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,084 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 17:46:23,123 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:46:23,188 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 17:46:23,197 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 17:46:23,203 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,206 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,207 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,208 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 17:46:23,208 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,222 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,234 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,279 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:46:23,322 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:46:23,379 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 20 treesize of output 23 [2018-11-18 17:46:23,384 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,391 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 23 treesize of output 29 [2018-11-18 17:46:23,395 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 23 treesize of output 25 [2018-11-18 17:46:23,402 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 22 treesize of output 24 [2018-11-18 17:46:23,414 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,416 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,417 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,418 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,419 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 23 treesize of output 13 [2018-11-18 17:46:23,419 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,428 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,438 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,459 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,462 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,470 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 25 treesize of output 35 [2018-11-18 17:46:23,479 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 29 treesize of output 35 [2018-11-18 17:46:23,515 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,517 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,519 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,520 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 17 [2018-11-18 17:46:23,520 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,535 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,567 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,570 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,573 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,580 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 27 treesize of output 41 [2018-11-18 17:46:23,632 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,633 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,634 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,635 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,636 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 38 treesize of output 36 [2018-11-18 17:46:23,636 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,670 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,671 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,673 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,674 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,675 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,677 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,680 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:23,680 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 17:46:23,680 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,705 INFO L267 ElimStorePlain]: Start of recursive call 21: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,724 INFO L267 ElimStorePlain]: Start of recursive call 18: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,740 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,748 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:23,806 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-1 vars, End of recursive call: 9 dim-0 vars, and 4 xjuncts. [2018-11-18 17:46:23,806 INFO L202 ElimStorePlain]: Needed 23 recursive calls to eliminate 5 variables, input treesize:45, output treesize:166 [2018-11-18 17:46:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 10 proven. 290 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:46:25,238 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:46:26,584 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-11-18 17:46:28,049 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2018-11-18 17:46:29,335 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-11-18 17:46:29,940 WARN L180 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-18 17:46:30,576 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 17:46:31,363 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-11-18 17:46:32,014 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2018-11-18 17:46:32,714 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 17:46:33,521 WARN L180 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-11-18 17:46:34,983 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 17:46:35,808 WARN L180 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-11-18 17:46:36,507 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-18 17:46:37,518 WARN L180 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2018-11-18 17:46:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-18 17:46:37,759 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:46:37,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 18, 22] total 74 [2018-11-18 17:46:37,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-11-18 17:46:37,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-11-18 17:46:37,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=910, Invalid=4492, Unknown=0, NotChecked=0, Total=5402 [2018-11-18 17:46:37,761 INFO L87 Difference]: Start difference. First operand 289 states and 295 transitions. Second operand 74 states. [2018-11-18 17:46:43,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:46:43,213 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-11-18 17:46:43,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:46:43,215 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 251 [2018-11-18 17:46:43,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:46:43,215 INFO L225 Difference]: With dead ends: 263 [2018-11-18 17:46:43,215 INFO L226 Difference]: Without dead ends: 263 [2018-11-18 17:46:43,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 916 SyntacticMatches, 14 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1326, Invalid=5984, Unknown=0, NotChecked=0, Total=7310 [2018-11-18 17:46:43,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-11-18 17:46:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-11-18 17:46:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-11-18 17:46:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-11-18 17:46:43,219 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 251 [2018-11-18 17:46:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:46:43,219 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-11-18 17:46:43,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-11-18 17:46:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-11-18 17:46:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-18 17:46:43,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:46:43,220 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:46:43,221 INFO L423 AbstractCegarLoop]: === Iteration 35 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:46:43,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:46:43,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1859003652, now seen corresponding path program 1 times [2018-11-18 17:46:43,222 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:46:43,222 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 62 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 62 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:46:43,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:46:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:46:44,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:44,010 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 17:46:44,018 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,034 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 17:46:44,038 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,044 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,060 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 17:46:44,067 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 17:46:44,078 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 17:46:44,078 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:44,090 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:44,135 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,137 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,150 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,162 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 17:46:44,173 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 17:46:44,173 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:44,225 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,226 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,228 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,245 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:44,253 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 17:46:44,254 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-11-18 17:46:44,322 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:46:44,377 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:46:44,464 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 17:46:44,475 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 17:46:44,487 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 17:46:44,487 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:44,495 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:44,504 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:44,564 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:44,616 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:44,674 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:46:44,674 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:46:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:44,824 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:46:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:45,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:46:45,483 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:46:45,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:46:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:46:45,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:45,644 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 17:46:45,652 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,665 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 17:46:45,670 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 17:46:45,676 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 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 17:46:45,688 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 17:46:45,688 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:45,701 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:45,711 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:45,766 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,775 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,787 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 17:46:45,793 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 17:46:45,806 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 17:46:45,806 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:45,818 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:45,863 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,865 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,879 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,898 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 17:46:45,902 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,918 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:45,927 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 35 treesize of output 42 [2018-11-18 17:46:45,927 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-18 17:46:46,024 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 17:46:46,024 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:46,074 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:46:46,127 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:46:46,187 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:46,240 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:46,297 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:46:46,297 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:46:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:46,390 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:46:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:46,772 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:46:46,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 6] total 15 [2018-11-18 17:46:46,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 17:46:46,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 17:46:46,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-11-18 17:46:46,773 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 16 states. [2018-11-18 17:46:47,690 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-11-18 17:46:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:46:47,882 INFO L93 Difference]: Finished difference Result 278 states and 278 transitions. [2018-11-18 17:46:47,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:46:47,883 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 262 [2018-11-18 17:46:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:46:47,884 INFO L225 Difference]: With dead ends: 278 [2018-11-18 17:46:47,884 INFO L226 Difference]: Without dead ends: 278 [2018-11-18 17:46:47,884 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1028 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-18 17:46:47,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2018-11-18 17:46:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2018-11-18 17:46:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-11-18 17:46:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-11-18 17:46:47,887 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 262 [2018-11-18 17:46:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:46:47,887 INFO L480 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-11-18 17:46:47,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 17:46:47,887 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-11-18 17:46:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-11-18 17:46:47,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:46:47,888 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2018-11-18 17:46:47,888 INFO L423 AbstractCegarLoop]: === Iteration 36 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:46:47,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:46:47,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1130569324, now seen corresponding path program 2 times [2018-11-18 17:46:47,889 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:46:47,889 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 64 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 64 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:46:47,907 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 17:46:48,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:46:48,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:46:48,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:48,789 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 17:46:48,795 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:48,808 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 17:46:48,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 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 17:46:48,822 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 17:46:48,843 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 17:46:48,843 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:48,852 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:48,862 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:48,901 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:48,908 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:48,933 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 17:46:48,940 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 17:46:48,954 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 17:46:48,954 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:48,966 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:49,020 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,022 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,034 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,047 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 17:46:49,064 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 17:46:49,064 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:49,131 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,132 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,134 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,152 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:49,160 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 17:46:49,161 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-11-18 17:46:49,219 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:46:49,279 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:46:49,347 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:49,407 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:49,485 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:46:49,485 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:46:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:49,702 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:46:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:51,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:46:51,014 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:46:51,026 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:46:51,200 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:46:51,200 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:46:51,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:46:51,229 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 17:46:51,237 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,268 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 17:46:51,274 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 17:46:51,288 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 17:46:51,302 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 17:46:51,302 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:51,315 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:51,328 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:51,381 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,394 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,423 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 17:46:51,434 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 17:46:51,451 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 17:46:51,451 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:51,468 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:46:51,546 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,548 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,569 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,594 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 17:46:51,600 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,625 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:46:51,636 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 35 treesize of output 42 [2018-11-18 17:46:51,637 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-11-18 17:46:51,786 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 17:46:51,786 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:46:51,859 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:46:51,940 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:46:52,033 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:52,119 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:46:52,198 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:46:52,199 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:46:52,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:52,388 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:46:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:46:54,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:46:54,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9, 11] total 26 [2018-11-18 17:46:54,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-18 17:46:54,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-18 17:46:54,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2018-11-18 17:46:54,775 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 27 states. [2018-11-18 17:46:57,113 WARN L180 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2018-11-18 17:46:58,096 WARN L180 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-11-18 17:46:59,137 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-11-18 17:47:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:47:00,464 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2018-11-18 17:47:00,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:47:00,464 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 277 [2018-11-18 17:47:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:47:00,465 INFO L225 Difference]: With dead ends: 308 [2018-11-18 17:47:00,465 INFO L226 Difference]: Without dead ends: 308 [2018-11-18 17:47:00,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1075 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2018-11-18 17:47:00,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2018-11-18 17:47:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2018-11-18 17:47:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-11-18 17:47:00,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2018-11-18 17:47:00,469 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 277 [2018-11-18 17:47:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:47:00,469 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2018-11-18 17:47:00,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-18 17:47:00,469 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2018-11-18 17:47:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-18 17:47:00,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:47:00,471 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:47:00,471 INFO L423 AbstractCegarLoop]: === Iteration 37 === [getNumbers3Err3REQUIRES_VIOLATION, getNumbers3Err2REQUIRES_VIOLATION, getNumbers3Err1REQUIRES_VIOLATION, getNumbers3Err0REQUIRES_VIOLATION, getNumbers2Err0REQUIRES_VIOLATION, getNumbers2Err3REQUIRES_VIOLATION, getNumbers2Err2REQUIRES_VIOLATION, getNumbers2Err1REQUIRES_VIOLATION, getNumbers4Err0REQUIRES_VIOLATION, getNumbers4Err3REQUIRES_VIOLATION, getNumbers4Err2REQUIRES_VIOLATION, getNumbers4Err1REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2018-11-18 17:47:00,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:47:00,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1051077740, now seen corresponding path program 3 times [2018-11-18 17:47:00,472 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:47:00,472 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/cvc4nyu Starting monitored process 66 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 66 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:47:00,495 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 17:47:15,417 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:47:15,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:47:15,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:47:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 10 proven. 245 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:47:15,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:47:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 10 proven. 245 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:47:17,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:47:17,515 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:47:17,522 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:48:16,707 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-18 17:48:16,707 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:48:16,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:48:16,746 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 17:48:16,753 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,768 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 17:48:16,772 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,779 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,786 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 17:48:16,790 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 17:48:16,802 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 17:48:16,803 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 17:48:16,815 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:48:16,854 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,855 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,861 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,877 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 17:48:16,881 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,896 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:48:16,904 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 35 treesize of output 42 [2018-11-18 17:48:16,904 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-11-18 17:48:17,013 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 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 17:48:17,013 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 17:48:17,063 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-11-18 17:48:17,118 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-11-18 17:48:17,206 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 17:48:17,217 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 17:48:17,230 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 17:48:17,230 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-11-18 17:48:17,239 INFO L267 ElimStorePlain]: Start of recursive call 11: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:48:17,248 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:48:17,308 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:48:17,362 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-11-18 17:48:17,420 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 13 dim-0 vars, and 4 xjuncts. [2018-11-18 17:48:17,421 INFO L202 ElimStorePlain]: Needed 12 recursive calls to eliminate 5 variables, input treesize:22, output treesize:106 [2018-11-18 17:48:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 10 proven. 245 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:48:18,277 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:48:22,524 WARN L180 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-11-18 17:48:23,860 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-11-18 17:48:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2018-11-18 17:48:24,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:48:24,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 16, 19] total 67 [2018-11-18 17:48:24,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-11-18 17:48:24,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-11-18 17:48:24,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=3707, Unknown=0, NotChecked=0, Total=4422 [2018-11-18 17:48:24,544 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand 67 states. [2018-11-18 17:48:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:48:28,606 INFO L93 Difference]: Finished difference Result 306 states and 305 transitions. [2018-11-18 17:48:28,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:48:28,606 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 307 [2018-11-18 17:48:28,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:48:28,607 INFO L225 Difference]: With dead ends: 306 [2018-11-18 17:48:28,607 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:48:28,607 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1148 SyntacticMatches, 13 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1086, Invalid=5076, Unknown=0, NotChecked=0, Total=6162 [2018-11-18 17:48:28,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:48:28,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:48:28,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:48:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:48:28,607 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 307 [2018-11-18 17:48:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:48:28,608 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:48:28,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-11-18 17:48:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:48:28,608 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:48:28,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:48:28 BoogieIcfgContainer [2018-11-18 17:48:28,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:48:28,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:48:28,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:48:28,613 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:48:28,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:39:03" (3/4) ... [2018-11-18 17:48:28,616 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:48:28,622 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:48:28,622 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers3 [2018-11-18 17:48:28,622 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers2 [2018-11-18 17:48:28,622 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers4 [2018-11-18 17:48:28,622 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:48:28,622 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2018-11-18 17:48:28,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2018-11-18 17:48:28,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-18 17:48:28,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:48:28,627 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:48:28,659 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d9dad511-541a-4144-9024-c0ab5efaac59/bin-2019/utaipan/witness.graphml [2018-11-18 17:48:28,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:48:28,660 INFO L168 Benchmark]: Toolchain (without parser) took 565333.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.0 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -114.1 MB). Peak memory consumption was 57.9 MB. Max. memory is 11.5 GB. [2018-11-18 17:48:28,660 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 17:48:28,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 926.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 17:48:28,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.70 ms. Allocated memory is still 1.0 GB. Free memory is still 926.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:48:28,660 INFO L168 Benchmark]: Boogie Preprocessor took 26.69 ms. Allocated memory is still 1.0 GB. Free memory is still 926.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:48:28,660 INFO L168 Benchmark]: RCFGBuilder took 411.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 926.4 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:48:28,660 INFO L168 Benchmark]: TraceAbstraction took 564615.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 61.4 MB). Peak memory consumption was 71.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:48:28,661 INFO L168 Benchmark]: Witness Printer took 46.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:48:28,661 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 209.24 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 926.4 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 19.70 ms. Allocated memory is still 1.0 GB. Free memory is still 926.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.69 ms. Allocated memory is still 1.0 GB. Free memory is still 926.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 411.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 926.4 MB in the beginning and 1.1 GB in the end (delta: -198.2 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 564615.64 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 61.4 MB). Peak memory consumption was 71.3 MB. Max. memory is 11.5 GB. * Witness Printer took 46.56 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 28]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 38]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 47]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 47]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 9]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 75 locations, 17 error locations. SAFE Result, 564.5s OverallTime, 37 OverallIterations, 11 TraceHistogramMax, 132.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2065 SDtfs, 8899 SDslu, 21497 SDs, 0 SdLazy, 24566 SolverSat, 1755 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16075 GetRequests, 14700 SyntacticMatches, 129 SemanticMatches, 1246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19937 ImplicationChecksByTransitivity, 184.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 37 MinimizatonAttempts, 160 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 236.4s SatisfiabilityAnalysisTime, 193.1s InterpolantComputationTime, 9370 NumberOfCodeBlocks, 8626 NumberOfCodeBlocksAsserted, 176 NumberOfCheckSat, 15338 ConstructedInterpolants, 2551 QuantifiedInterpolants, 40340041 SizeOfPredicates, 335 NumberOfNonLiveVariables, 21732 ConjunctsInSsa, 973 ConjunctsInUnsatCore, 107 InterpolantComputations, 16 PerfectInterpolantSequences, 48831/58598 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...