./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6399ca05df7547b7620299987a8a06e9e2c006b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6399ca05df7547b7620299987a8a06e9e2c006b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_260 term size 47 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:52:30,494 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:52:30,496 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:52:30,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:52:30,507 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:52:30,508 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:52:30,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:52:30,511 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:52:30,513 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:52:30,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:52:30,515 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:52:30,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:52:30,516 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:52:30,517 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:52:30,519 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:52:30,519 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:52:30,520 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:52:30,522 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:52:30,525 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:52:30,526 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:52:30,527 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:52:30,529 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:52:30,531 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:52:30,532 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:52:30,532 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:52:30,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:52:30,535 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:52:30,535 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:52:30,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:52:30,538 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:52:30,538 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:52:30,539 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:52:30,539 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:52:30,539 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:52:30,541 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:52:30,542 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:52:30,542 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 23:52:30,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:52:30,557 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:52:30,558 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:52:30,558 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:52:30,558 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:52:30,559 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:52:30,559 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:52:30,559 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:52:30,559 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:52:30,559 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:52:30,560 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:52:30,562 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:52:30,562 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:52:30,562 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:52:30,563 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:52:30,563 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:52:30,563 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:52:30,563 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:52:30,563 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:52:30,564 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:52:30,564 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:52:30,564 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:52:30,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:52:30,565 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:52:30,565 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:52:30,565 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:52:30,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:52:30,565 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:52:30,566 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:52:30,566 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:52:30,566 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:52:30,566 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:52:30,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:52:30,567 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:52:30,567 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_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6399ca05df7547b7620299987a8a06e9e2c006b [2018-10-26 23:52:30,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:52:30,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:52:30,636 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:52:30,638 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:52:30,639 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:52:30,639 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/../../sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i [2018-10-26 23:52:30,716 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/40874f392/adf21d5776214bf68a1e6d2ea82e1f10/FLAG1b134dd85 [2018-10-26 23:52:31,186 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:52:31,187 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i [2018-10-26 23:52:31,207 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/40874f392/adf21d5776214bf68a1e6d2ea82e1f10/FLAG1b134dd85 [2018-10-26 23:52:31,226 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/40874f392/adf21d5776214bf68a1e6d2ea82e1f10 [2018-10-26 23:52:31,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:52:31,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:52:31,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:52:31,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:52:31,242 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:52:31,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:31,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17af8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31, skipping insertion in model container [2018-10-26 23:52:31,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:31,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:52:31,318 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:52:31,676 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:52:31,685 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:52:31,747 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:52:31,802 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:52:31,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31 WrapperNode [2018-10-26 23:52:31,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:52:31,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:52:31,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:52:31,803 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:52:31,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:31,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:31,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:52:31,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:52:31,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:52:31,981 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:52:31,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:31,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:32,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:32,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:32,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:32,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:32,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... [2018-10-26 23:52:32,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:52:32,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:52:32,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:52:32,065 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:52:32,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:52:32,131 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2018-10-26 23:52:32,132 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2018-10-26 23:52:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2018-10-26 23:52:32,133 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2018-10-26 23:52:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2018-10-26 23:52:32,133 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2018-10-26 23:52:32,133 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2018-10-26 23:52:32,133 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2018-10-26 23:52:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:52:32,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:52:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2018-10-26 23:52:32,134 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2018-10-26 23:52:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:52:32,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:52:32,134 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2018-10-26 23:52:32,135 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2018-10-26 23:52:32,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:52:32,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:52:33,566 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:52:33,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:33 BoogieIcfgContainer [2018-10-26 23:52:33,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:52:33,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:52:33,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:52:33,571 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:52:33,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:52:31" (1/3) ... [2018-10-26 23:52:33,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c4500d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:33, skipping insertion in model container [2018-10-26 23:52:33,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:52:31" (2/3) ... [2018-10-26 23:52:33,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c4500d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:52:33, skipping insertion in model container [2018-10-26 23:52:33,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:52:33" (3/3) ... [2018-10-26 23:52:33,575 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort_true-unreach-call_true-valid-memsafety.i [2018-10-26 23:52:33,585 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:52:33,593 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:52:33,610 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:52:33,644 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:52:33,644 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:52:33,645 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:52:33,645 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:52:33,645 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:52:33,645 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:52:33,645 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:52:33,646 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:52:33,666 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2018-10-26 23:52:33,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 23:52:33,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:33,673 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:33,676 INFO L424 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:33,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:33,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1901168194, now seen corresponding path program 1 times [2018-10-26 23:52:33,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:33,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:33,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:33,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:33,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:33,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:33,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 23:52:33,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:33,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:52:33,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:52:33,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:52:33,831 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 2 states. [2018-10-26 23:52:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:33,876 INFO L93 Difference]: Finished difference Result 240 states and 391 transitions. [2018-10-26 23:52:33,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:52:33,877 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-26 23:52:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:33,895 INFO L225 Difference]: With dead ends: 240 [2018-10-26 23:52:33,897 INFO L226 Difference]: Without dead ends: 111 [2018-10-26 23:52:33,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:52:33,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-26 23:52:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-26 23:52:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-26 23:52:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2018-10-26 23:52:33,959 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 14 [2018-10-26 23:52:33,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:33,959 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2018-10-26 23:52:33,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:52:33,960 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2018-10-26 23:52:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:52:33,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:33,961 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:33,961 INFO L424 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:33,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1660650102, now seen corresponding path program 1 times [2018-10-26 23:52:33,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:33,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:33,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:33,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:33,964 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:34,051 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:34,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:52:34,051 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:34,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:52:34,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:52:34,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:34,053 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand 3 states. [2018-10-26 23:52:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:34,134 INFO L93 Difference]: Finished difference Result 216 states and 262 transitions. [2018-10-26 23:52:34,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:52:34,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 23:52:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:34,139 INFO L225 Difference]: With dead ends: 216 [2018-10-26 23:52:34,139 INFO L226 Difference]: Without dead ends: 118 [2018-10-26 23:52:34,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:52:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-26 23:52:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2018-10-26 23:52:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-26 23:52:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 137 transitions. [2018-10-26 23:52:34,151 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 137 transitions. Word has length 16 [2018-10-26 23:52:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:34,152 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 137 transitions. [2018-10-26 23:52:34,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:52:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 137 transitions. [2018-10-26 23:52:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 23:52:34,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:34,154 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:34,154 INFO L424 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:34,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2112489170, now seen corresponding path program 1 times [2018-10-26 23:52:34,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:34,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:34,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:34,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:34,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:34,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:34,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:52:34,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:34,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:52:34,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:52:34,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:34,310 INFO L87 Difference]: Start difference. First operand 114 states and 137 transitions. Second operand 6 states. [2018-10-26 23:52:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:34,678 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2018-10-26 23:52:34,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:52:34,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-10-26 23:52:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:34,682 INFO L225 Difference]: With dead ends: 163 [2018-10-26 23:52:34,682 INFO L226 Difference]: Without dead ends: 158 [2018-10-26 23:52:34,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-10-26 23:52:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 119. [2018-10-26 23:52:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-26 23:52:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2018-10-26 23:52:34,701 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 23 [2018-10-26 23:52:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:34,701 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2018-10-26 23:52:34,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:52:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2018-10-26 23:52:34,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 23:52:34,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:34,702 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:34,703 INFO L424 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:34,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:34,703 INFO L82 PathProgramCache]: Analyzing trace with hash 534541990, now seen corresponding path program 1 times [2018-10-26 23:52:34,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:34,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:34,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:34,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:34,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:52:34,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:34,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:52:34,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:34,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:52:34,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:52:34,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:52:34,856 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand 5 states. [2018-10-26 23:52:35,230 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 23:52:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:35,540 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2018-10-26 23:52:35,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:52:35,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-10-26 23:52:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:35,542 INFO L225 Difference]: With dead ends: 121 [2018-10-26 23:52:35,542 INFO L226 Difference]: Without dead ends: 118 [2018-10-26 23:52:35,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-10-26 23:52:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-10-26 23:52:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-26 23:52:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2018-10-26 23:52:35,562 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 31 [2018-10-26 23:52:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:35,562 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2018-10-26 23:52:35,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:52:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2018-10-26 23:52:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 23:52:35,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:35,563 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:35,564 INFO L424 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:35,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:35,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1253948128, now seen corresponding path program 1 times [2018-10-26 23:52:35,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:35,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:35,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:35,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:35,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:52:35,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:35,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:52:35,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:35,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:52:35,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:52:35,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:52:35,693 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand 5 states. [2018-10-26 23:52:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:35,898 INFO L93 Difference]: Finished difference Result 120 states and 141 transitions. [2018-10-26 23:52:35,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:52:35,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-10-26 23:52:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:35,910 INFO L225 Difference]: With dead ends: 120 [2018-10-26 23:52:35,910 INFO L226 Difference]: Without dead ends: 117 [2018-10-26 23:52:35,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-26 23:52:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-26 23:52:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-26 23:52:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2018-10-26 23:52:35,932 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 31 [2018-10-26 23:52:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:35,933 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2018-10-26 23:52:35,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:52:35,933 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2018-10-26 23:52:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 23:52:35,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:35,934 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:35,934 INFO L424 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:35,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:35,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1309830707, now seen corresponding path program 1 times [2018-10-26 23:52:35,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:35,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:35,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:35,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:35,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:36,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:36,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:52:36,170 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:36,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:52:36,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:52:36,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:36,171 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand 8 states. [2018-10-26 23:52:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:36,533 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2018-10-26 23:52:36,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:52:36,534 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-10-26 23:52:36,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:36,535 INFO L225 Difference]: With dead ends: 153 [2018-10-26 23:52:36,535 INFO L226 Difference]: Without dead ends: 150 [2018-10-26 23:52:36,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:52:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-10-26 23:52:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 123. [2018-10-26 23:52:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-26 23:52:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2018-10-26 23:52:36,547 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 34 [2018-10-26 23:52:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:36,547 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2018-10-26 23:52:36,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:52:36,548 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2018-10-26 23:52:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 23:52:36,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:36,549 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:36,549 INFO L424 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:36,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:36,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1080201303, now seen corresponding path program 1 times [2018-10-26 23:52:36,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:36,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:36,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:36,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:36,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:36,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:36,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:36,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:52:36,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:36,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:52:36,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:52:36,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:36,820 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 8 states. [2018-10-26 23:52:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:37,156 INFO L93 Difference]: Finished difference Result 152 states and 177 transitions. [2018-10-26 23:52:37,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:52:37,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-10-26 23:52:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:37,159 INFO L225 Difference]: With dead ends: 152 [2018-10-26 23:52:37,159 INFO L226 Difference]: Without dead ends: 149 [2018-10-26 23:52:37,159 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:52:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-26 23:52:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2018-10-26 23:52:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-26 23:52:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2018-10-26 23:52:37,168 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 34 [2018-10-26 23:52:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:37,169 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2018-10-26 23:52:37,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:52:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2018-10-26 23:52:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 23:52:37,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:37,170 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:37,170 INFO L424 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:37,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:37,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1484899372, now seen corresponding path program 1 times [2018-10-26 23:52:37,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:37,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:37,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:37,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:37,172 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:37,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:37,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:37,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:52:37,412 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:37,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:52:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:52:37,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:37,417 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 8 states. [2018-10-26 23:52:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:37,833 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2018-10-26 23:52:37,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:52:37,835 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-10-26 23:52:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:37,836 INFO L225 Difference]: With dead ends: 151 [2018-10-26 23:52:37,836 INFO L226 Difference]: Without dead ends: 148 [2018-10-26 23:52:37,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-26 23:52:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-26 23:52:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2018-10-26 23:52:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-26 23:52:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2018-10-26 23:52:37,847 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 37 [2018-10-26 23:52:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:37,848 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2018-10-26 23:52:37,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:52:37,848 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2018-10-26 23:52:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 23:52:37,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:37,849 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:52:37,849 INFO L424 AbstractCegarLoop]: === Iteration 9 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:37,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:37,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2074259378, now seen corresponding path program 1 times [2018-10-26 23:52:37,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:37,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:37,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:37,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:37,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:38,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:38,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:52:38,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:38,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:52:38,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:52:38,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:38,144 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 8 states. [2018-10-26 23:52:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:38,771 INFO L93 Difference]: Finished difference Result 150 states and 173 transitions. [2018-10-26 23:52:38,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:52:38,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2018-10-26 23:52:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:38,775 INFO L225 Difference]: With dead ends: 150 [2018-10-26 23:52:38,775 INFO L226 Difference]: Without dead ends: 147 [2018-10-26 23:52:38,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-26 23:52:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-26 23:52:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 135. [2018-10-26 23:52:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-26 23:52:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 156 transitions. [2018-10-26 23:52:38,785 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 156 transitions. Word has length 37 [2018-10-26 23:52:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:38,786 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 156 transitions. [2018-10-26 23:52:38,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:52:38,786 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 156 transitions. [2018-10-26 23:52:38,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-26 23:52:38,787 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:38,787 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:38,787 INFO L424 AbstractCegarLoop]: === Iteration 10 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:38,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:38,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1644339355, now seen corresponding path program 1 times [2018-10-26 23:52:38,788 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:38,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:38,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:38,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:38,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:52:39,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:39,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:52:39,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:39,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:52:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:52:39,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:52:39,198 INFO L87 Difference]: Start difference. First operand 135 states and 156 transitions. Second operand 5 states. [2018-10-26 23:52:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:39,721 INFO L93 Difference]: Finished difference Result 137 states and 157 transitions. [2018-10-26 23:52:39,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:52:39,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-10-26 23:52:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:39,723 INFO L225 Difference]: With dead ends: 137 [2018-10-26 23:52:39,723 INFO L226 Difference]: Without dead ends: 133 [2018-10-26 23:52:39,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 23:52:39,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-26 23:52:39,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-26 23:52:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-26 23:52:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 152 transitions. [2018-10-26 23:52:39,731 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 152 transitions. Word has length 43 [2018-10-26 23:52:39,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:39,732 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 152 transitions. [2018-10-26 23:52:39,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:52:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 152 transitions. [2018-10-26 23:52:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-26 23:52:39,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:39,733 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:39,733 INFO L424 AbstractCegarLoop]: === Iteration 11 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:39,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:39,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1569521016, now seen corresponding path program 1 times [2018-10-26 23:52:39,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:39,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:39,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:39,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:39,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:39,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:39,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:52:39,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:39,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:52:39,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:52:39,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:39,953 INFO L87 Difference]: Start difference. First operand 133 states and 152 transitions. Second operand 6 states. [2018-10-26 23:52:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:40,030 INFO L93 Difference]: Finished difference Result 165 states and 189 transitions. [2018-10-26 23:52:40,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:52:40,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-10-26 23:52:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:40,031 INFO L225 Difference]: With dead ends: 165 [2018-10-26 23:52:40,032 INFO L226 Difference]: Without dead ends: 162 [2018-10-26 23:52:40,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:40,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-10-26 23:52:40,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2018-10-26 23:52:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-10-26 23:52:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2018-10-26 23:52:40,043 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 47 [2018-10-26 23:52:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:40,043 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2018-10-26 23:52:40,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:52:40,043 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2018-10-26 23:52:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-26 23:52:40,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:40,045 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:40,045 INFO L424 AbstractCegarLoop]: === Iteration 12 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:40,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:40,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1703259498, now seen corresponding path program 1 times [2018-10-26 23:52:40,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:40,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:40,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:40,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:40,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:40,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:40,387 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:52:40,387 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-10-26 23:52:40,389 INFO L202 CegarAbsIntRunner]: [0], [3], [4], [74], [78], [84], [88], [96], [99], [181], [187], [191], [199], [205], [209], [217], [223], [227], [235], [241], [245], [251], [255], [259], [261], [264], [266], [271], [273], [278], [280], [287], [292], [294], [297], [322], [326], [332], [336], [344], [347], [436], [437], [438], [440], [441], [444], [448] [2018-10-26 23:52:40,439 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:52:40,440 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:52:41,513 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 23:52:41,514 INFO L272 AbstractInterpreter]: Visited 48 different actions 99 times. Merged at 13 different actions 21 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 53 variables. [2018-10-26 23:52:41,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:41,558 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 23:52:41,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:41,559 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:52:41,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:41,577 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 23:52:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:41,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:52:41,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:52:41,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:52:41,711 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,737 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:52:41,776 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:52:41,776 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,778 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,783 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,783 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:26, output treesize:3 [2018-10-26 23:52:41,935 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:52:41,937 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:52:41,938 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,940 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:52:41,948 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:52:41,948 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,953 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,956 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:41,956 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-10-26 23:52:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:41,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:52:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:52:42,277 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:52:42,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [9] total 19 [2018-10-26 23:52:42,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:42,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 23:52:42,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 23:52:42,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-26 23:52:42,278 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand 11 states. [2018-10-26 23:52:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:43,082 INFO L93 Difference]: Finished difference Result 175 states and 200 transitions. [2018-10-26 23:52:43,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:52:43,083 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2018-10-26 23:52:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:43,084 INFO L225 Difference]: With dead ends: 175 [2018-10-26 23:52:43,084 INFO L226 Difference]: Without dead ends: 172 [2018-10-26 23:52:43,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 86 SyntacticMatches, 9 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2018-10-26 23:52:43,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-26 23:52:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 153. [2018-10-26 23:52:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-26 23:52:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2018-10-26 23:52:43,097 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 50 [2018-10-26 23:52:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:43,098 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2018-10-26 23:52:43,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 23:52:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2018-10-26 23:52:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-26 23:52:43,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:43,099 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:43,099 INFO L424 AbstractCegarLoop]: === Iteration 13 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:43,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:43,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1593314505, now seen corresponding path program 1 times [2018-10-26 23:52:43,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:43,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:43,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:43,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:43,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:43,640 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2018-10-26 23:52:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:43,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:43,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:52:43,801 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-10-26 23:52:43,802 INFO L202 CegarAbsIntRunner]: [0], [3], [4], [74], [78], [84], [88], [96], [99], [101], [105], [111], [115], [123], [129], [133], [141], [147], [151], [159], [165], [169], [175], [181], [187], [191], [199], [205], [209], [217], [220], [255], [259], [261], [264], [266], [271], [273], [278], [280], [287], [432], [436], [437], [438], [440] [2018-10-26 23:52:43,805 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:52:43,805 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:52:44,761 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 23:52:44,761 INFO L272 AbstractInterpreter]: Visited 46 different actions 149 times. Merged at 33 different actions 67 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 46 variables. [2018-10-26 23:52:44,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:44,773 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 23:52:44,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:44,773 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:52:44,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:44,781 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 23:52:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:44,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:52:44,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:52:44,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:52:44,895 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:44,919 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:44,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:52:44,928 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:52:44,929 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:44,930 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:44,935 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:44,935 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-10-26 23:52:44,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:52:44,984 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:52:44,985 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:45,013 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:45,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:52:45,024 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:52:45,024 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:45,029 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:45,032 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:45,032 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-10-26 23:52:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:45,047 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:52:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:45,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 23:52:45,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 14 [2018-10-26 23:52:45,120 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 23:52:45,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 23:52:45,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 23:52:45,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-26 23:52:45,121 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 11 states. [2018-10-26 23:52:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:45,362 INFO L93 Difference]: Finished difference Result 296 states and 339 transitions. [2018-10-26 23:52:45,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:52:45,366 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2018-10-26 23:52:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:45,367 INFO L225 Difference]: With dead ends: 296 [2018-10-26 23:52:45,368 INFO L226 Difference]: Without dead ends: 191 [2018-10-26 23:52:45,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-10-26 23:52:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-26 23:52:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 182. [2018-10-26 23:52:45,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-26 23:52:45,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 204 transitions. [2018-10-26 23:52:45,383 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 204 transitions. Word has length 49 [2018-10-26 23:52:45,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:45,383 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 204 transitions. [2018-10-26 23:52:45,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 23:52:45,383 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 204 transitions. [2018-10-26 23:52:45,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 23:52:45,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:45,384 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:45,387 INFO L424 AbstractCegarLoop]: === Iteration 14 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:45,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:45,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1070295510, now seen corresponding path program 1 times [2018-10-26 23:52:45,388 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:45,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:45,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:45,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:45,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:52:45,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:45,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-26 23:52:45,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:45,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 23:52:45,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 23:52:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:52:45,614 INFO L87 Difference]: Start difference. First operand 182 states and 204 transitions. Second operand 9 states. [2018-10-26 23:52:46,034 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-10-26 23:52:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:46,155 INFO L93 Difference]: Finished difference Result 199 states and 223 transitions. [2018-10-26 23:52:46,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:52:46,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2018-10-26 23:52:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:46,157 INFO L225 Difference]: With dead ends: 199 [2018-10-26 23:52:46,157 INFO L226 Difference]: Without dead ends: 196 [2018-10-26 23:52:46,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-26 23:52:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-26 23:52:46,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2018-10-26 23:52:46,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-26 23:52:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 207 transitions. [2018-10-26 23:52:46,172 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 207 transitions. Word has length 53 [2018-10-26 23:52:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:46,174 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 207 transitions. [2018-10-26 23:52:46,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 23:52:46,174 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 207 transitions. [2018-10-26 23:52:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-26 23:52:46,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:46,175 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:46,175 INFO L424 AbstractCegarLoop]: === Iteration 15 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:46,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash 446889955, now seen corresponding path program 1 times [2018-10-26 23:52:46,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:46,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:46,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:46,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:46,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:46,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:52:46,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:52:46,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:52:46,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:52:46,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:52:46,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:52:46,367 INFO L87 Difference]: Start difference. First operand 185 states and 207 transitions. Second operand 6 states. [2018-10-26 23:52:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:52:46,733 INFO L93 Difference]: Finished difference Result 252 states and 292 transitions. [2018-10-26 23:52:46,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:52:46,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2018-10-26 23:52:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:52:46,736 INFO L225 Difference]: With dead ends: 252 [2018-10-26 23:52:46,736 INFO L226 Difference]: Without dead ends: 198 [2018-10-26 23:52:46,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:52:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-26 23:52:46,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 191. [2018-10-26 23:52:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-26 23:52:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 215 transitions. [2018-10-26 23:52:46,754 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 215 transitions. Word has length 58 [2018-10-26 23:52:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:52:46,754 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 215 transitions. [2018-10-26 23:52:46,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:52:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 215 transitions. [2018-10-26 23:52:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 23:52:46,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:52:46,755 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:52:46,756 INFO L424 AbstractCegarLoop]: === Iteration 16 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:52:46,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:52:46,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1638314735, now seen corresponding path program 2 times [2018-10-26 23:52:46,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:52:46,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:46,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:52:46,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:52:46,761 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:52:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:52:47,185 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-26 23:52:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:47,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:47,545 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:52:47,545 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-26 23:52:47,545 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 23:52:47,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:52:47,546 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:52:47,554 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 23:52:47,554 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-26 23:52:47,633 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-26 23:52:47,633 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 23:52:47,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:52:47,688 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:52:47,688 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,694 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,694 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:17 [2018-10-26 23:52:47,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 11 [2018-10-26 23:52:47,723 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 11 treesize of output 14 [2018-10-26 23:52:47,727 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:52:47,727 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,731 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,754 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,762 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,762 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:31, output treesize:21 [2018-10-26 23:52:47,847 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:47,848 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:47,849 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-26 23:52:47,849 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,855 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,856 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2018-10-26 23:52:47,907 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 [2018-10-26 23:52:47,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:52:47,910 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,915 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,923 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,923 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2018-10-26 23:52:47,972 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 35 [2018-10-26 23:52:47,977 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 24 treesize of output 26 [2018-10-26 23:52:47,985 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:52:47,985 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:47,993 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,036 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2018-10-26 23:52:48,039 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:52:48,039 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,045 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,057 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:52:48,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:52:48,084 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:52:48,084 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,086 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,104 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:52:48,104 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 4 variables, input treesize:45, output treesize:82 [2018-10-26 23:52:48,477 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 54 treesize of output 50 [2018-10-26 23:52:48,488 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:52:48,489 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,629 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,817 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 45 [2018-10-26 23:52:48,819 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:52:48,819 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,826 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:48,841 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 23:52:48,842 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:104, output treesize:82 [2018-10-26 23:52:49,193 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:49,194 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:49,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 46 [2018-10-26 23:52:49,211 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 27 [2018-10-26 23:52:49,213 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-10-26 23:52:49,224 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-10-26 23:52:49,225 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,227 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,228 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,228 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:55, output treesize:4 [2018-10-26 23:52:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:52:49,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:52:49,699 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 111 [2018-10-26 23:52:49,832 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-10-26 23:52:49,835 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 105 treesize of output 96 [2018-10-26 23:52:49,842 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:49,844 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 86 [2018-10-26 23:52:49,844 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,865 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,867 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 86 treesize of output 83 [2018-10-26 23:52:49,870 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:49,875 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 80 [2018-10-26 23:52:49,875 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,890 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:52:49,926 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 81 [2018-10-26 23:52:50,027 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:50,317 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 82 [2018-10-26 23:52:50,318 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 4 xjuncts. [2018-10-26 23:52:50,583 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 74 treesize of output 61 [2018-10-26 23:52:50,587 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:50,609 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 6 case distinctions, treesize of input 53 treesize of output 52 [2018-10-26 23:52:50,613 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:50,649 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 8 case distinctions, treesize of input 47 treesize of output 87 [2018-10-26 23:52:52,300 WARN L179 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 622 DAG size of output: 357 [2018-10-26 23:52:52,307 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:52,312 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:52,317 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 38 [2018-10-26 23:52:52,318 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-10-26 23:52:53,129 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:53,158 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:53,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 34 [2018-10-26 23:52:53,168 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 2 xjuncts. [2018-10-26 23:52:53,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:53,176 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:53,193 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2018-10-26 23:52:53,194 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-10-26 23:52:53,229 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:53,240 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:53,241 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:53,245 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:53,247 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:53,247 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 37 [2018-10-26 23:52:53,248 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:53,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:53,981 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 26 [2018-10-26 23:52:53,981 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:55,229 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:55,236 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:55,238 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:55,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 35 [2018-10-26 23:52:55,241 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:55,845 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:55,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2018-10-26 23:52:55,851 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:56,365 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:56,525 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:56,574 INFO L303 Elim1Store]: Index analysis took 238 ms [2018-10-26 23:52:56,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 51 [2018-10-26 23:52:56,585 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 2 xjuncts. [2018-10-26 23:52:56,587 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:56,601 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 40 [2018-10-26 23:52:56,602 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 4 xjuncts. [2018-10-26 23:52:56,604 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:56,606 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:56,607 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:56,609 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:56,612 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:56,620 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 52 [2018-10-26 23:52:56,621 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-10-26 23:52:57,003 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:57,004 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:57,005 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:57,005 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 41 treesize of output 35 [2018-10-26 23:52:57,006 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:57,349 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:57,378 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2018-10-26 23:52:57,378 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:58,551 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:58,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 39 [2018-10-26 23:52:58,562 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-10-26 23:52:58,948 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:58,950 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2018-10-26 23:52:58,950 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-26 23:52:59,413 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:59,433 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:59,449 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:52:59,531 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:52:59,532 INFO L303 Elim1Store]: Index analysis took 144 ms [2018-10-26 23:52:59,532 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 45 treesize of output 38 [2018-10-26 23:52:59,534 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:00,127 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,128 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,128 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,130 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 50 treesize of output 37 [2018-10-26 23:53:00,131 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:00,157 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,157 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,158 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,160 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:00,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 41 treesize of output 34 [2018-10-26 23:53:00,162 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:00,513 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,540 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 61 [2018-10-26 23:53:00,542 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 8 xjuncts. [2018-10-26 23:53:00,546 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,547 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,548 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,553 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:00,564 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 56 [2018-10-26 23:53:00,565 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:00,750 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,751 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:00,752 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:00,759 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 42 [2018-10-26 23:53:00,760 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:00,886 INFO L267 ElimStorePlain]: Start of recursive call 11: 20 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-10-26 23:53:01,002 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-10-26 23:53:01,125 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 11 xjuncts. [2018-10-26 23:53:01,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 43 [2018-10-26 23:53:01,131 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 14 [2018-10-26 23:53:01,132 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:01,140 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:01,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 61 treesize of output 53 [2018-10-26 23:53:01,347 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,363 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 4 case distinctions, treesize of input 41 treesize of output 58 [2018-10-26 23:53:01,520 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2018-10-26 23:53:01,523 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,525 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 34 treesize of output 27 [2018-10-26 23:53:01,525 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:01,577 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,577 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,578 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:01,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 27 [2018-10-26 23:53:01,579 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:01,620 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,661 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 35 [2018-10-26 23:53:01,662 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:01,664 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,665 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,666 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,668 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:01,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 30 [2018-10-26 23:53:01,669 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:01,708 INFO L267 ElimStorePlain]: Start of recursive call 35: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:01,739 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:01,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 61 treesize of output 53 [2018-10-26 23:53:01,746 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,765 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 4 case distinctions, treesize of input 39 treesize of output 56 [2018-10-26 23:53:01,939 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2018-10-26 23:53:01,942 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,943 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:01,944 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:01,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 36 treesize of output 30 [2018-10-26 23:53:01,945 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:02,037 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,062 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-10-26 23:53:02,062 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:02,158 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,171 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 35 [2018-10-26 23:53:02,172 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:02,177 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,178 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,178 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,181 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:02,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 30 [2018-10-26 23:53:02,182 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:02,214 INFO L267 ElimStorePlain]: Start of recursive call 41: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:02,243 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:02,397 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 10 xjuncts. [2018-10-26 23:53:02,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 78 [2018-10-26 23:53:02,526 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,547 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 69 [2018-10-26 23:53:02,548 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:02,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 50 [2018-10-26 23:53:02,643 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,644 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 23 [2018-10-26 23:53:02,645 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:02,671 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,684 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 38 [2018-10-26 23:53:02,685 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:02,715 INFO L267 ElimStorePlain]: Start of recursive call 48: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:02,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 58 [2018-10-26 23:53:02,723 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,724 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,735 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 2 case distinctions, treesize of input 41 treesize of output 56 [2018-10-26 23:53:02,807 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,807 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,808 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:02,809 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 33 treesize of output 27 [2018-10-26 23:53:02,810 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:02,876 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,882 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 30 [2018-10-26 23:53:02,882 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:02,909 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,918 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,933 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,965 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:02,966 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 37 treesize of output 29 [2018-10-26 23:53:02,966 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:03,004 INFO L267 ElimStorePlain]: Start of recursive call 52: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:03,028 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:03,120 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 48 treesize of output 40 [2018-10-26 23:53:03,123 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:03,123 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 27 treesize of output 20 [2018-10-26 23:53:03,124 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:03,132 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:03,134 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 48 treesize of output 40 [2018-10-26 23:53:03,140 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:03,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 29 treesize of output 18 [2018-10-26 23:53:03,141 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:03,150 INFO L267 ElimStorePlain]: Start of recursive call 58: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:03,215 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:53:03,395 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 16 xjuncts. [2018-10-26 23:53:03,573 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 5 dim-0 vars, and 14 xjuncts. [2018-10-26 23:53:03,573 INFO L202 ElimStorePlain]: Needed 59 recursive calls to eliminate 6 variables, input treesize:183, output treesize:246 [2018-10-26 23:53:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:03,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 23:53:03,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2018-10-26 23:53:03,826 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 23:53:03,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-26 23:53:03,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-26 23:53:03,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2018-10-26 23:53:03,827 INFO L87 Difference]: Start difference. First operand 191 states and 215 transitions. Second operand 25 states. [2018-10-26 23:53:04,516 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2018-10-26 23:53:05,612 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-10-26 23:53:05,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:05,976 INFO L93 Difference]: Finished difference Result 235 states and 265 transitions. [2018-10-26 23:53:05,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 23:53:05,977 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2018-10-26 23:53:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:05,978 INFO L225 Difference]: With dead ends: 235 [2018-10-26 23:53:05,978 INFO L226 Difference]: Without dead ends: 232 [2018-10-26 23:53:05,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 94 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2018-10-26 23:53:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2018-10-26 23:53:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 203. [2018-10-26 23:53:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-26 23:53:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2018-10-26 23:53:06,002 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 56 [2018-10-26 23:53:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:06,002 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2018-10-26 23:53:06,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-26 23:53:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2018-10-26 23:53:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 23:53:06,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:06,006 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:53:06,006 INFO L424 AbstractCegarLoop]: === Iteration 17 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:06,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash 751717275, now seen corresponding path program 1 times [2018-10-26 23:53:06,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:06,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:06,008 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 23:53:06,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:06,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:06,441 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-26 23:53:06,972 WARN L179 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-26 23:53:07,450 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:07,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:07,450 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:53:07,450 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 57 with the following transitions: [2018-10-26 23:53:07,451 INFO L202 CegarAbsIntRunner]: [0], [3], [4], [74], [78], [84], [88], [96], [101], [105], [111], [115], [123], [129], [133], [141], [144], [147], [151], [159], [165], [169], [175], [255], [259], [261], [264], [266], [271], [273], [278], [280], [287], [424], [436], [437], [438], [440] [2018-10-26 23:53:07,455 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:53:07,455 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:53:08,054 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 23:53:08,054 INFO L272 AbstractInterpreter]: Visited 38 different actions 117 times. Merged at 25 different actions 51 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 46 variables. [2018-10-26 23:53:08,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:08,057 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 23:53:08,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:08,057 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:08,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:08,066 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 23:53:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:08,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:08,239 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:53:08,239 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,245 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-10-26 23:53:08,271 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:08,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:08,273 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,275 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:08,286 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:08,287 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,289 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,295 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,295 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2018-10-26 23:53:08,320 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:08,321 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:08,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-26 23:53:08,322 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,329 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,329 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:26 [2018-10-26 23:53:08,358 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 20 [2018-10-26 23:53:08,361 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:08,361 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,366 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,382 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 20 [2018-10-26 23:53:08,385 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:08,385 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,391 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,401 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,402 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:51, output treesize:29 [2018-10-26 23:53:08,444 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 34 [2018-10-26 23:53:08,450 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 23 treesize of output 25 [2018-10-26 23:53:08,454 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:53:08,454 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,461 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,494 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,527 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 34 [2018-10-26 23:53:08,529 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 23 treesize of output 25 [2018-10-26 23:53:08,532 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:53:08,532 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,539 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,558 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2018-10-26 23:53:08,561 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:08,563 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2018-10-26 23:53:08,563 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,569 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,585 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:08,607 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:08,607 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:54, output treesize:103 [2018-10-26 23:53:08,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 89 [2018-10-26 23:53:08,898 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 78 [2018-10-26 23:53:08,899 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,937 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:08,937 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2018-10-26 23:53:08,938 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:08,995 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:08,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-10-26 23:53:08,996 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,015 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,040 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:09,041 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 67 treesize of output 64 [2018-10-26 23:53:09,043 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:09,044 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2018-10-26 23:53:09,044 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,055 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,078 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-26 23:53:09,079 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:150, output treesize:102 [2018-10-26 23:53:09,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 31 [2018-10-26 23:53:09,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2018-10-26 23:53:09,194 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,198 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,202 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:4 [2018-10-26 23:53:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:09,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:53:09,821 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 132 [2018-10-26 23:53:09,824 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:09,824 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:09,859 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 57 [2018-10-26 23:53:10,181 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-10-26 23:53:10,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2018-10-26 23:53:10,193 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:10,201 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2018-10-26 23:53:10,201 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:10,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2018-10-26 23:53:10,204 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:10,314 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 42 [2018-10-26 23:53:10,315 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:10,327 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 49 [2018-10-26 23:53:10,328 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:10,462 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 41 [2018-10-26 23:53:10,474 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 39 [2018-10-26 23:53:10,522 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2018-10-26 23:53:10,523 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:10,561 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:10,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2018-10-26 23:53:10,562 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:10,585 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:10,640 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 5 case distinctions, treesize of input 32 treesize of output 57 [2018-10-26 23:53:10,815 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2018-10-26 23:53:10,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 29 [2018-10-26 23:53:10,823 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:11,064 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 31 [2018-10-26 23:53:11,065 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:11,227 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:11,233 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 28 [2018-10-26 23:53:11,234 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:11,400 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:11,401 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2018-10-26 23:53:11,401 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:11,513 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:11,514 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:11,517 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 35 treesize of output 22 [2018-10-26 23:53:11,517 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:11,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2018-10-26 23:53:11,638 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:11,699 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 22 [2018-10-26 23:53:11,699 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:11,759 INFO L267 ElimStorePlain]: Start of recursive call 14: 7 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:11,831 INFO L267 ElimStorePlain]: Start of recursive call 10: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:53:11,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 34 [2018-10-26 23:53:11,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2018-10-26 23:53:11,861 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:11,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2018-10-26 23:53:11,909 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:11,935 INFO L267 ElimStorePlain]: Start of recursive call 22: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:12,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 31 treesize of output 27 [2018-10-26 23:53:12,089 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-10-26 23:53:12,090 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:12,099 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:12,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 38 treesize of output 38 [2018-10-26 23:53:12,112 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 2 case distinctions, treesize of input 20 treesize of output 28 [2018-10-26 23:53:12,151 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 21 [2018-10-26 23:53:12,151 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,174 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:12,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-10-26 23:53:12,175 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:12,186 INFO L267 ElimStorePlain]: Start of recursive call 28: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,209 INFO L267 ElimStorePlain]: Start of recursive call 27: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,352 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:53:12,417 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:53:12,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2018-10-26 23:53:12,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:12,596 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:12,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 76 [2018-10-26 23:53:12,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 63 [2018-10-26 23:53:12,712 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 50 [2018-10-26 23:53:12,723 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,734 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 65 [2018-10-26 23:53:12,734 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,745 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 72 [2018-10-26 23:53:12,746 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:12,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2018-10-26 23:53:12,883 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:12,885 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2018-10-26 23:53:12,886 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:12,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 50 [2018-10-26 23:53:12,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 41 [2018-10-26 23:53:13,093 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,100 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2018-10-26 23:53:13,154 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:13,157 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2018-10-26 23:53:13,161 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:13,164 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 20 [2018-10-26 23:53:13,165 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,167 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:13,167 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,207 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,208 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2018-10-26 23:53:13,208 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,227 INFO L267 ElimStorePlain]: Start of recursive call 41: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:13,245 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:53:13,245 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,260 INFO L267 ElimStorePlain]: Start of recursive call 40: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:13,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2018-10-26 23:53:13,284 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:53:13,284 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 9 [2018-10-26 23:53:13,294 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,299 INFO L267 ElimStorePlain]: Start of recursive call 48: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,403 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 56 treesize of output 52 [2018-10-26 23:53:13,427 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 5 case distinctions, treesize of input 40 treesize of output 62 [2018-10-26 23:53:13,679 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 126 [2018-10-26 23:53:13,685 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,697 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 3 case distinctions, treesize of input 45 treesize of output 52 [2018-10-26 23:53:13,699 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 8 xjuncts. [2018-10-26 23:53:13,703 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,706 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:13,719 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 3 case distinctions, treesize of input 45 treesize of output 52 [2018-10-26 23:53:13,720 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 8 xjuncts. [2018-10-26 23:53:13,741 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:13,741 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:13,752 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:13,753 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:14,215 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,217 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,221 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 36 [2018-10-26 23:53:14,222 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:14,357 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,361 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,377 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 4 case distinctions, treesize of input 37 treesize of output 54 [2018-10-26 23:53:14,378 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 16 xjuncts. [2018-10-26 23:53:14,531 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,532 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,532 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,534 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2018-10-26 23:53:14,534 INFO L267 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:14,625 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,626 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-10-26 23:53:14,627 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:14,701 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,703 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2018-10-26 23:53:14,711 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:14,788 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,790 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:14,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2018-10-26 23:53:14,795 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:14,851 INFO L267 ElimStorePlain]: Start of recursive call 52: 7 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:53:14,895 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-10-26 23:53:14,897 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 43 treesize of output 35 [2018-10-26 23:53:14,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 27 [2018-10-26 23:53:14,910 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:14,941 INFO L267 ElimStorePlain]: Start of recursive call 63: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:14,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 39 treesize of output 33 [2018-10-26 23:53:14,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 20 treesize of output 13 [2018-10-26 23:53:14,945 INFO L267 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:14,954 INFO L267 ElimStorePlain]: Start of recursive call 65: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:14,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 52 treesize of output 50 [2018-10-26 23:53:14,968 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 37 [2018-10-26 23:53:15,003 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:15,004 INFO L267 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,008 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,014 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 2 case distinctions, treesize of input 32 treesize of output 33 [2018-10-26 23:53:15,014 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:15,017 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:15,017 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,019 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,022 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,028 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 2 case distinctions, treesize of input 32 treesize of output 33 [2018-10-26 23:53:15,028 INFO L267 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:15,072 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,073 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2018-10-26 23:53:15,074 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,088 INFO L267 ElimStorePlain]: Start of recursive call 68: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:15,099 INFO L267 ElimStorePlain]: Start of recursive call 67: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:15,280 INFO L267 ElimStorePlain]: Start of recursive call 33: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 12 xjuncts. [2018-10-26 23:53:15,395 INFO L267 ElimStorePlain]: Start of recursive call 31: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 12 xjuncts. [2018-10-26 23:53:15,686 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 69 [2018-10-26 23:53:15,689 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:15,689 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 56 [2018-10-26 23:53:15,811 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:15,811 INFO L267 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2018-10-26 23:53:15,814 INFO L267 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,854 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 44 [2018-10-26 23:53:15,854 INFO L267 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:15,886 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2018-10-26 23:53:15,889 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:15,891 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 24 [2018-10-26 23:53:15,904 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,905 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2018-10-26 23:53:15,906 INFO L267 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,909 INFO L267 ElimStorePlain]: Start of recursive call 81: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,914 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:53:15,914 INFO L267 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,917 INFO L267 ElimStorePlain]: Start of recursive call 80: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,944 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2018-10-26 23:53:15,947 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 28 treesize of output 31 [2018-10-26 23:53:15,963 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,964 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:15,965 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 16 treesize of output 10 [2018-10-26 23:53:15,966 INFO L267 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,968 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:15,968 INFO L267 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,975 INFO L267 ElimStorePlain]: Start of recursive call 85: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,987 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2018-10-26 23:53:15,988 INFO L267 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:15,999 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:16,001 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 25 treesize of output 26 [2018-10-26 23:53:16,017 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,018 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-10-26 23:53:16,020 INFO L267 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,025 INFO L267 ElimStorePlain]: Start of recursive call 89: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,029 INFO L267 ElimStorePlain]: Start of recursive call 84: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,037 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2018-10-26 23:53:16,048 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2018-10-26 23:53:16,049 INFO L267 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:16,067 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 21 treesize of output 24 [2018-10-26 23:53:16,081 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:16,081 INFO L267 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,084 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,085 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2018-10-26 23:53:16,086 INFO L267 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,092 INFO L267 ElimStorePlain]: Start of recursive call 93: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,094 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 20 treesize of output 23 [2018-10-26 23:53:16,108 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:16,108 INFO L267 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,110 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,111 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,111 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 16 treesize of output 10 [2018-10-26 23:53:16,112 INFO L267 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,117 INFO L267 ElimStorePlain]: Start of recursive call 96: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,133 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:16,144 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 3 case distinctions, treesize of input 27 treesize of output 47 [2018-10-26 23:53:16,210 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,211 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,215 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 1 case distinctions, treesize of input 32 treesize of output 28 [2018-10-26 23:53:16,216 INFO L267 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:16,245 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,245 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,246 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2018-10-26 23:53:16,246 INFO L267 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,270 INFO L267 ElimStorePlain]: Start of recursive call 99: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:16,286 INFO L267 ElimStorePlain]: Start of recursive call 91: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:16,303 INFO L267 ElimStorePlain]: Start of recursive call 76: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:16,314 INFO L267 ElimStorePlain]: Start of recursive call 74: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:16,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 67 [2018-10-26 23:53:16,322 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:16,322 INFO L267 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,351 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 56 [2018-10-26 23:53:16,401 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:16,401 INFO L267 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,403 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-10-26 23:53:16,404 INFO L267 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,438 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 36 [2018-10-26 23:53:16,439 INFO L267 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2018-10-26 23:53:16,575 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,577 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-10-26 23:53:16,577 INFO L267 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,588 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,594 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2018-10-26 23:53:16,595 INFO L267 ElimStorePlain]: Start of recursive call 110: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:16,607 INFO L267 ElimStorePlain]: Start of recursive call 108: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:16,623 INFO L267 ElimStorePlain]: Start of recursive call 104: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:16,634 INFO L267 ElimStorePlain]: Start of recursive call 102: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:16,638 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 72 [2018-10-26 23:53:16,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:16,641 INFO L267 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,659 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2018-10-26 23:53:16,677 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-10-26 23:53:16,678 INFO L267 ElimStorePlain]: Start of recursive call 114: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 16 [2018-10-26 23:53:16,694 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,696 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2018-10-26 23:53:16,696 INFO L267 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,700 INFO L267 ElimStorePlain]: Start of recursive call 115: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 27 treesize of output 23 [2018-10-26 23:53:16,707 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 19 treesize of output 25 [2018-10-26 23:53:16,721 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:16,721 INFO L267 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,723 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,724 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,725 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2018-10-26 23:53:16,727 INFO L267 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,734 INFO L267 ElimStorePlain]: Start of recursive call 118: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,739 INFO L267 ElimStorePlain]: Start of recursive call 117: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,746 INFO L267 ElimStorePlain]: Start of recursive call 113: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:16,759 INFO L267 ElimStorePlain]: Start of recursive call 111: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:16,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 65 [2018-10-26 23:53:16,765 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:16,765 INFO L267 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2018-10-26 23:53:16,799 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:53:16,800 INFO L267 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,834 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-10-26 23:53:16,837 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:16,838 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2018-10-26 23:53:16,839 INFO L267 ElimStorePlain]: Start of recursive call 126: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,844 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:53:16,844 INFO L267 ElimStorePlain]: Start of recursive call 127: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,847 INFO L267 ElimStorePlain]: Start of recursive call 125: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,849 INFO L267 ElimStorePlain]: Start of recursive call 123: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,855 INFO L267 ElimStorePlain]: Start of recursive call 121: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,858 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 72 [2018-10-26 23:53:16,861 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:16,861 INFO L267 ElimStorePlain]: Start of recursive call 129: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:16,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2018-10-26 23:53:17,009 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-10-26 23:53:17,009 INFO L267 ElimStorePlain]: Start of recursive call 131: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,123 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 13 [2018-10-26 23:53:17,126 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,127 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2018-10-26 23:53:17,127 INFO L267 ElimStorePlain]: Start of recursive call 133: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,130 INFO L267 ElimStorePlain]: Start of recursive call 132: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,131 INFO L267 ElimStorePlain]: Start of recursive call 130: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,139 INFO L267 ElimStorePlain]: Start of recursive call 128: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,143 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 67 [2018-10-26 23:53:17,165 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:17,165 INFO L267 ElimStorePlain]: Start of recursive call 135: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,220 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2018-10-26 23:53:17,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:53:17,238 INFO L267 ElimStorePlain]: Start of recursive call 137: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,254 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2018-10-26 23:53:17,257 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,259 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2018-10-26 23:53:17,259 INFO L267 ElimStorePlain]: Start of recursive call 139: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,266 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:53:17,266 INFO L267 ElimStorePlain]: Start of recursive call 140: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,268 INFO L267 ElimStorePlain]: Start of recursive call 138: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,272 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 34 [2018-10-26 23:53:17,275 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,276 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-10-26 23:53:17,290 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,292 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2018-10-26 23:53:17,293 INFO L267 ElimStorePlain]: Start of recursive call 143: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,295 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,296 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,297 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,298 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,300 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 24 treesize of output 20 [2018-10-26 23:53:17,300 INFO L267 ElimStorePlain]: Start of recursive call 144: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,314 INFO L267 ElimStorePlain]: Start of recursive call 142: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:17,328 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:53:17,328 INFO L267 ElimStorePlain]: Start of recursive call 145: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,338 INFO L267 ElimStorePlain]: Start of recursive call 141: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:17,348 INFO L267 ElimStorePlain]: Start of recursive call 136: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:17,364 INFO L267 ElimStorePlain]: Start of recursive call 134: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:17,369 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 69 [2018-10-26 23:53:17,372 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:53:17,372 INFO L267 ElimStorePlain]: Start of recursive call 147: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,406 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 56 [2018-10-26 23:53:17,515 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 23:53:17,537 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2018-10-26 23:53:17,537 INFO L267 ElimStorePlain]: Start of recursive call 149: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,542 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-10-26 23:53:17,542 INFO L267 ElimStorePlain]: Start of recursive call 150: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,607 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2018-10-26 23:53:17,607 INFO L267 ElimStorePlain]: Start of recursive call 151: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,611 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2018-10-26 23:53:17,611 INFO L267 ElimStorePlain]: Start of recursive call 152: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,674 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 41 treesize of output 39 [2018-10-26 23:53:17,678 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,687 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 2 case distinctions, treesize of input 27 treesize of output 45 [2018-10-26 23:53:17,753 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,753 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,754 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,756 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,757 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2018-10-26 23:53:17,758 INFO L267 ElimStorePlain]: Start of recursive call 155: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,760 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:17,760 INFO L267 ElimStorePlain]: Start of recursive call 156: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,789 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,791 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,793 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,803 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 2 case distinctions, treesize of input 30 treesize of output 41 [2018-10-26 23:53:17,804 INFO L267 ElimStorePlain]: Start of recursive call 157: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:17,834 INFO L267 ElimStorePlain]: Start of recursive call 154: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:17,849 INFO L267 ElimStorePlain]: Start of recursive call 153: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:17,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 34 treesize of output 28 [2018-10-26 23:53:17,855 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,862 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 1 case distinctions, treesize of input 21 treesize of output 19 [2018-10-26 23:53:17,862 INFO L267 ElimStorePlain]: Start of recursive call 159: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:17,876 INFO L267 ElimStorePlain]: Start of recursive call 158: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:17,954 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 39 [2018-10-26 23:53:17,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2018-10-26 23:53:17,958 INFO L267 ElimStorePlain]: Start of recursive call 161: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:17,978 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:17,988 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 2 case distinctions, treesize of input 31 treesize of output 49 [2018-10-26 23:53:18,090 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-10-26 23:53:18,093 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,094 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,095 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,096 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,098 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2018-10-26 23:53:18,099 INFO L267 ElimStorePlain]: Start of recursive call 163: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:18,102 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,104 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2018-10-26 23:53:18,104 INFO L267 ElimStorePlain]: Start of recursive call 164: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:18,161 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2018-10-26 23:53:18,168 INFO L267 ElimStorePlain]: Start of recursive call 165: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:18,171 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,172 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,174 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,177 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,191 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 2 case distinctions, treesize of input 34 treesize of output 45 [2018-10-26 23:53:18,192 INFO L267 ElimStorePlain]: Start of recursive call 166: End of recursive call: and 4 xjuncts. [2018-10-26 23:53:18,239 INFO L267 ElimStorePlain]: Start of recursive call 162: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:18,269 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,271 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2018-10-26 23:53:18,290 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,290 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,291 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,293 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,295 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-26 23:53:18,295 INFO L267 ElimStorePlain]: Start of recursive call 168: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:18,298 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,299 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2018-10-26 23:53:18,300 INFO L267 ElimStorePlain]: Start of recursive call 169: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:18,318 INFO L267 ElimStorePlain]: Start of recursive call 167: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:18,381 INFO L267 ElimStorePlain]: Start of recursive call 160: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:53:18,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2018-10-26 23:53:18,391 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-10-26 23:53:18,391 INFO L267 ElimStorePlain]: Start of recursive call 171: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:18,407 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,409 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 21 treesize of output 12 [2018-10-26 23:53:18,409 INFO L267 ElimStorePlain]: Start of recursive call 172: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:18,424 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:18,430 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 1 case distinctions, treesize of input 24 treesize of output 22 [2018-10-26 23:53:18,431 INFO L267 ElimStorePlain]: Start of recursive call 173: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:18,447 INFO L267 ElimStorePlain]: Start of recursive call 170: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:53:18,520 INFO L267 ElimStorePlain]: Start of recursive call 148: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:53:18,559 INFO L267 ElimStorePlain]: Start of recursive call 146: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:53:18,846 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 3 dim-2 vars, End of recursive call: 14 dim-0 vars, and 17 xjuncts. [2018-10-26 23:53:18,847 INFO L202 ElimStorePlain]: Needed 173 recursive calls to eliminate 13 variables, input treesize:323, output treesize:309 [2018-10-26 23:53:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:19,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-26 23:53:19,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2018-10-26 23:53:19,565 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 23:53:19,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-26 23:53:19,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-26 23:53:19,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1022, Unknown=4, NotChecked=0, Total=1122 [2018-10-26 23:53:19,566 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand 25 states. [2018-10-26 23:53:22,944 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 62 [2018-10-26 23:53:23,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:23,390 INFO L93 Difference]: Finished difference Result 401 states and 458 transitions. [2018-10-26 23:53:23,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-26 23:53:23,391 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 56 [2018-10-26 23:53:23,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:23,393 INFO L225 Difference]: With dead ends: 401 [2018-10-26 23:53:23,393 INFO L226 Difference]: Without dead ends: 317 [2018-10-26 23:53:23,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=433, Invalid=2984, Unknown=5, NotChecked=0, Total=3422 [2018-10-26 23:53:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-10-26 23:53:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 284. [2018-10-26 23:53:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-26 23:53:23,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 314 transitions. [2018-10-26 23:53:23,423 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 314 transitions. Word has length 56 [2018-10-26 23:53:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:23,423 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 314 transitions. [2018-10-26 23:53:23,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-26 23:53:23,423 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 314 transitions. [2018-10-26 23:53:23,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-26 23:53:23,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:23,424 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 23:53:23,430 INFO L424 AbstractCegarLoop]: === Iteration 18 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:23,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:23,432 INFO L82 PathProgramCache]: Analyzing trace with hash 239415261, now seen corresponding path program 1 times [2018-10-26 23:53:23,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:23,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:23,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:23,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:23,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:53:24,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:24,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 23:53:24,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:53:24,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:53:24,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:53:24,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:53:24,456 INFO L87 Difference]: Start difference. First operand 284 states and 314 transitions. Second operand 10 states. [2018-10-26 23:53:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:24,713 INFO L93 Difference]: Finished difference Result 327 states and 372 transitions. [2018-10-26 23:53:24,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:53:24,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-10-26 23:53:24,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:24,716 INFO L225 Difference]: With dead ends: 327 [2018-10-26 23:53:24,716 INFO L226 Difference]: Without dead ends: 324 [2018-10-26 23:53:24,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-10-26 23:53:24,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2018-10-26 23:53:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 297. [2018-10-26 23:53:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-10-26 23:53:24,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 335 transitions. [2018-10-26 23:53:24,739 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 335 transitions. Word has length 59 [2018-10-26 23:53:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:24,739 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 335 transitions. [2018-10-26 23:53:24,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 23:53:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 335 transitions. [2018-10-26 23:53:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-26 23:53:24,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:24,740 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:24,746 INFO L424 AbstractCegarLoop]: === Iteration 19 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:24,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:24,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1983480323, now seen corresponding path program 1 times [2018-10-26 23:53:24,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:24,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:24,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:24,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:24,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:53:25,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:25,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 23:53:25,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:53:25,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:53:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:53:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:53:25,410 INFO L87 Difference]: Start difference. First operand 297 states and 335 transitions. Second operand 10 states. [2018-10-26 23:53:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:25,874 INFO L93 Difference]: Finished difference Result 314 states and 355 transitions. [2018-10-26 23:53:25,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 23:53:25,876 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-10-26 23:53:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:25,877 INFO L225 Difference]: With dead ends: 314 [2018-10-26 23:53:25,878 INFO L226 Difference]: Without dead ends: 309 [2018-10-26 23:53:25,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-10-26 23:53:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-26 23:53:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 301. [2018-10-26 23:53:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-10-26 23:53:25,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 339 transitions. [2018-10-26 23:53:25,900 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 339 transitions. Word has length 59 [2018-10-26 23:53:25,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:25,900 INFO L481 AbstractCegarLoop]: Abstraction has 301 states and 339 transitions. [2018-10-26 23:53:25,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 23:53:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 339 transitions. [2018-10-26 23:53:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-26 23:53:25,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:25,905 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:25,905 INFO L424 AbstractCegarLoop]: === Iteration 20 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:25,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:25,905 INFO L82 PathProgramCache]: Analyzing trace with hash 877890064, now seen corresponding path program 1 times [2018-10-26 23:53:25,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:53:25,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:25,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:25,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:53:25,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:53:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:26,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:26,806 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:53:26,806 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 60 with the following transitions: [2018-10-26 23:53:26,806 INFO L202 CegarAbsIntRunner]: [0], [3], [4], [74], [78], [84], [88], [96], [99], [101], [105], [111], [115], [123], [129], [133], [141], [147], [151], [159], [165], [169], [175], [181], [187], [191], [199], [205], [209], [217], [223], [227], [235], [238], [255], [259], [261], [264], [266], [271], [273], [278], [280], [287], [434], [436], [437], [438], [440] [2018-10-26 23:53:26,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:53:26,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:53:27,759 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 23:53:27,759 INFO L272 AbstractInterpreter]: Visited 49 different actions 161 times. Merged at 36 different actions 73 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 46 variables. [2018-10-26 23:53:27,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:27,801 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 23:53:27,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:27,801 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:53:27,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:27,822 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 23:53:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:27,909 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:27,933 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:53:27,933 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,005 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,005 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 23:53:28,020 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,021 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-10-26 23:53:28,022 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:28,045 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:28,045 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,048 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,074 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:28,076 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:28,076 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,078 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,096 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 16 [2018-10-26 23:53:28,098 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2018-10-26 23:53:28,098 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,099 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,111 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,111 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 4 variables, input treesize:68, output treesize:39 [2018-10-26 23:53:28,224 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 23 [2018-10-26 23:53:28,227 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 11 treesize of output 14 [2018-10-26 23:53:28,230 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:53:28,230 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,235 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,241 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,259 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,262 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 22 treesize of output 27 [2018-10-26 23:53:28,265 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 11 treesize of output 14 [2018-10-26 23:53:28,268 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:53:28,268 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,273 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,279 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,294 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,294 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:64, output treesize:51 [2018-10-26 23:53:28,327 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,328 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,330 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,331 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,332 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 26 treesize of output 46 [2018-10-26 23:53:28,332 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,352 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,352 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:71 [2018-10-26 23:53:28,396 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,398 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,399 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,401 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,403 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,404 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 25 treesize of output 37 [2018-10-26 23:53:28,404 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,436 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 62 [2018-10-26 23:53:28,446 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:28,446 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,458 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,484 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,490 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 47 [2018-10-26 23:53:28,493 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:28,493 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,502 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,525 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,525 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:101, output treesize:71 [2018-10-26 23:53:28,571 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,578 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 50 [2018-10-26 23:53:28,580 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 11 treesize of output 14 [2018-10-26 23:53:28,583 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2018-10-26 23:53:28,583 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,589 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,599 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,624 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,630 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:28,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 77 [2018-10-26 23:53:28,634 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 24 treesize of output 23 [2018-10-26 23:53:28,636 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2018-10-26 23:53:28,637 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,643 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,655 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,677 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:28,677 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:93, output treesize:115 [2018-10-26 23:53:29,012 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:29,013 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:29,014 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:29,017 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:29,037 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 150 [2018-10-26 23:53:29,051 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 92 [2018-10-26 23:53:29,052 INFO L267 ElimStorePlain]: Start of recursive call 3: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-10-26 23:53:29,086 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:29,095 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 114 [2018-10-26 23:53:29,097 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 23:53:29,113 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:29,115 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 80 [2018-10-26 23:53:29,116 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:53:29,184 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:29,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2018-10-26 23:53:29,185 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,187 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:29,188 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 86 [2018-10-26 23:53:29,189 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,191 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:29,191 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 68 [2018-10-26 23:53:29,192 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,242 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 3 xjuncts. [2018-10-26 23:53:29,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2018-10-26 23:53:29,292 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:29,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2018-10-26 23:53:29,293 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,309 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2018-10-26 23:53:29,310 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,325 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2018-10-26 23:53:29,325 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,334 INFO L267 ElimStorePlain]: Start of recursive call 9: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 53 [2018-10-26 23:53:29,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2018-10-26 23:53:29,342 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-10-26 23:53:29,357 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,367 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:29,367 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,376 INFO L267 ElimStorePlain]: Start of recursive call 13: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,380 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 53 [2018-10-26 23:53:29,383 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2018-10-26 23:53:29,383 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,397 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2018-10-26 23:53:29,397 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-10-26 23:53:29,408 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,416 INFO L267 ElimStorePlain]: Start of recursive call 17: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:29,441 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:29,441 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 3 variables, input treesize:191, output treesize:15 [2018-10-26 23:53:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:29,485 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:53:32,913 WARN L179 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2018-10-26 23:53:33,518 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2018-10-26 23:53:33,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 625 treesize of output 496 [2018-10-26 23:53:33,626 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:33,630 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 678 treesize of output 686 [2018-10-26 23:53:33,632 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:53:33,660 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:53:33,708 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:53:33,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 625 treesize of output 570 [2018-10-26 23:53:34,052 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2018-10-26 23:53:34,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:53:34,058 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,111 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:34,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 343 treesize of output 353 [2018-10-26 23:53:34,161 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 339 treesize of output 342 [2018-10-26 23:53:34,169 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-10-26 23:53:34,169 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,196 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,306 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:34,307 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 335 treesize of output 336 [2018-10-26 23:53:34,312 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:34,314 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2018-10-26 23:53:34,315 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,336 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,432 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:34,480 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 335 treesize of output 346 [2018-10-26 23:53:34,603 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2018-10-26 23:53:34,608 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 614 treesize of output 613 [2018-10-26 23:53:34,608 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,612 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 325 [2018-10-26 23:53:34,613 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,616 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:53:34,616 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:34,772 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:34,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 317 treesize of output 323 [2018-10-26 23:53:34,819 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2018-10-26 23:53:34,819 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-10-26 23:53:34,907 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:35,017 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:53:35,033 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 320 [2018-10-26 23:53:35,037 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 305 [2018-10-26 23:53:35,037 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:35,096 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 2 case distinctions, treesize of input 302 treesize of output 305 [2018-10-26 23:53:35,121 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 281 [2018-10-26 23:53:35,122 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:35,134 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:35,369 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:53:35,370 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_prenex_126 term size 47 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 23:53:35,374 INFO L168 Benchmark]: Toolchain (without parser) took 64141.88 ms. Allocated memory was 1.0 GB in the beginning and 1.8 GB in the end (delta: 774.9 MB). Free memory was 958.0 MB in the beginning and 1.7 GB in the end (delta: -767.1 MB). Peak memory consumption was 825.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:53:35,375 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:53:35,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.25 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 931.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-10-26 23:53:35,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 178.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 931.2 MB in the beginning and 1.2 GB in the end (delta: -225.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-10-26 23:53:35,376 INFO L168 Benchmark]: Boogie Preprocessor took 82.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:53:35,376 INFO L168 Benchmark]: RCFGBuilder took 1502.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:53:35,376 INFO L168 Benchmark]: TraceAbstraction took 61805.40 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 614.5 MB). Free memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: -632.1 MB). Peak memory consumption was 800.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:53:35,390 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 568.25 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 931.2 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 178.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 931.2 MB in the beginning and 1.2 GB in the end (delta: -225.6 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1502.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 61805.40 ms. Allocated memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: 614.5 MB). Free memory was 1.1 GB in the beginning and 1.7 GB in the end (delta: -632.1 MB). Peak memory consumption was 800.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_prenex_126 term size 47 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_prenex_126 term size 47: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:53:37,572 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:53:37,574 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:53:37,585 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:53:37,585 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:53:37,586 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:53:37,588 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:53:37,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:53:37,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:53:37,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:53:37,593 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:53:37,594 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:53:37,595 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:53:37,596 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:53:37,597 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:53:37,598 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:53:37,599 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:53:37,601 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:53:37,603 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:53:37,605 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:53:37,606 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:53:37,607 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:53:37,610 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:53:37,610 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:53:37,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:53:37,612 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:53:37,613 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:53:37,614 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:53:37,615 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:53:37,616 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:53:37,616 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:53:37,618 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:53:37,618 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:53:37,618 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:53:37,619 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:53:37,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:53:37,620 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-10-26 23:53:37,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:53:37,647 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:53:37,648 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:53:37,648 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:53:37,648 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:53:37,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:53:37,649 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:53:37,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:53:37,650 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:53:37,650 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 23:53:37,650 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 23:53:37,651 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:53:37,651 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:53:37,651 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:53:37,651 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:53:37,651 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 23:53:37,652 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 23:53:37,652 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 23:53:37,652 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:53:37,652 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:53:37,652 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:53:37,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:53:37,654 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:53:37,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:53:37,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:53:37,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:53:37,655 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:53:37,655 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:53:37,655 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-10-26 23:53:37,656 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:53:37,656 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 23:53:37,656 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 23:53:37,656 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6399ca05df7547b7620299987a8a06e9e2c006b [2018-10-26 23:53:37,699 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:53:37,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:53:37,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:53:37,716 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:53:37,717 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:53:37,718 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/../../sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i [2018-10-26 23:53:37,774 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/00e714dd1/7e39e7eef18944b8be8d5c92aa1b8a6c/FLAG58e26901d [2018-10-26 23:53:38,230 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:53:38,230 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/sv-benchmarks/c/heap-manipulation/merge_sort_true-unreach-call_true-valid-memsafety.i [2018-10-26 23:53:38,257 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/00e714dd1/7e39e7eef18944b8be8d5c92aa1b8a6c/FLAG58e26901d [2018-10-26 23:53:38,271 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/data/00e714dd1/7e39e7eef18944b8be8d5c92aa1b8a6c [2018-10-26 23:53:38,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:53:38,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 23:53:38,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:53:38,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:53:38,282 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:53:38,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:38,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9a9dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38, skipping insertion in model container [2018-10-26 23:53:38,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:38,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:53:38,341 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:53:38,750 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:53:38,762 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:53:38,867 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:53:38,937 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:53:38,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38 WrapperNode [2018-10-26 23:53:38,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:53:38,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:53:38,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:53:38,939 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:53:38,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:38,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:53:39,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:53:39,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:53:39,042 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:53:39,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... [2018-10-26 23:53:39,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:53:39,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:53:39,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:53:39,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:53:39,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:39,250 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2018-10-26 23:53:39,251 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2018-10-26 23:53:39,251 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2018-10-26 23:53:39,251 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2018-10-26 23:53:39,251 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2018-10-26 23:53:39,251 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2018-10-26 23:53:39,252 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2018-10-26 23:53:39,252 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2018-10-26 23:53:39,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:53:39,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:53:39,256 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2018-10-26 23:53:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2018-10-26 23:53:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:53:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:53:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2018-10-26 23:53:39,257 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2018-10-26 23:53:39,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:53:39,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:53:40,755 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:53:40,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:40 BoogieIcfgContainer [2018-10-26 23:53:40,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:53:40,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:53:40,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:53:40,760 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:53:40,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:53:38" (1/3) ... [2018-10-26 23:53:40,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfe4a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:40, skipping insertion in model container [2018-10-26 23:53:40,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:53:38" (2/3) ... [2018-10-26 23:53:40,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfe4a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:53:40, skipping insertion in model container [2018-10-26 23:53:40,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:53:40" (3/3) ... [2018-10-26 23:53:40,765 INFO L112 eAbstractionObserver]: Analyzing ICFG merge_sort_true-unreach-call_true-valid-memsafety.i [2018-10-26 23:53:40,772 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:53:40,780 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:53:40,797 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:53:40,822 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 23:53:40,822 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:53:40,823 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:53:40,823 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:53:40,823 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:53:40,823 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:53:40,823 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:53:40,823 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:53:40,824 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:53:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2018-10-26 23:53:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-26 23:53:40,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:40,848 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:40,851 INFO L424 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:40,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:40,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1741248485, now seen corresponding path program 1 times [2018-10-26 23:53:40,860 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:40,861 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:40,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:40,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:40,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:40,944 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:40,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:40,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 23:53:40,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 23:53:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 23:53:40,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:53:40,966 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 2 states. [2018-10-26 23:53:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:41,006 INFO L93 Difference]: Finished difference Result 238 states and 389 transitions. [2018-10-26 23:53:41,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 23:53:41,007 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-26 23:53:41,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:41,022 INFO L225 Difference]: With dead ends: 238 [2018-10-26 23:53:41,022 INFO L226 Difference]: Without dead ends: 110 [2018-10-26 23:53:41,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 23:53:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-26 23:53:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-26 23:53:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-26 23:53:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2018-10-26 23:53:41,083 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 14 [2018-10-26 23:53:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:41,085 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2018-10-26 23:53:41,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 23:53:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2018-10-26 23:53:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 23:53:41,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:41,086 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:41,087 INFO L424 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:41,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1329991044, now seen corresponding path program 1 times [2018-10-26 23:53:41,087 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:41,088 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:41,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:41,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:41,275 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:41,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:41,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 23:53:41,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 23:53:41,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 23:53:41,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:53:41,284 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand 3 states. [2018-10-26 23:53:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:41,409 INFO L93 Difference]: Finished difference Result 214 states and 260 transitions. [2018-10-26 23:53:41,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 23:53:41,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-26 23:53:41,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:41,413 INFO L225 Difference]: With dead ends: 214 [2018-10-26 23:53:41,413 INFO L226 Difference]: Without dead ends: 116 [2018-10-26 23:53:41,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 23:53:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-26 23:53:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2018-10-26 23:53:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-26 23:53:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2018-10-26 23:53:41,445 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 15 [2018-10-26 23:53:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:41,445 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2018-10-26 23:53:41,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 23:53:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2018-10-26 23:53:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 23:53:41,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:41,447 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:41,447 INFO L424 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:41,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:41,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1797770310, now seen corresponding path program 1 times [2018-10-26 23:53:41,448 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:41,448 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:41,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:41,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:41,592 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:41,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:41,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:53:41,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:53:41,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:53:41,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:53:41,598 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand 6 states. [2018-10-26 23:53:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:42,246 INFO L93 Difference]: Finished difference Result 161 states and 194 transitions. [2018-10-26 23:53:42,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:53:42,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-10-26 23:53:42,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:42,249 INFO L225 Difference]: With dead ends: 161 [2018-10-26 23:53:42,249 INFO L226 Difference]: Without dead ends: 156 [2018-10-26 23:53:42,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-10-26 23:53:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 117. [2018-10-26 23:53:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-26 23:53:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2018-10-26 23:53:42,271 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 21 [2018-10-26 23:53:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:42,272 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2018-10-26 23:53:42,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:53:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2018-10-26 23:53:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 23:53:42,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:42,274 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:53:42,275 INFO L424 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:42,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:42,275 INFO L82 PathProgramCache]: Analyzing trace with hash -612706766, now seen corresponding path program 1 times [2018-10-26 23:53:42,276 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:42,276 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:53:42,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:42,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:42,427 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:42,437 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:42,438 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,466 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,544 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:42,547 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:42,548 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,551 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,559 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,559 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:23, output treesize:1 [2018-10-26 23:53:42,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2018-10-26 23:53:42,658 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-10-26 23:53:42,658 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,686 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,699 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2018-10-26 23:53:42,702 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-10-26 23:53:42,702 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,706 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,714 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:42,714 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2018-10-26 23:53:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:53:42,760 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:42,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:42,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:53:42,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:53:42,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:53:42,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:53:42,764 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand 5 states. [2018-10-26 23:53:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:43,424 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2018-10-26 23:53:43,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:53:43,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-10-26 23:53:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:43,429 INFO L225 Difference]: With dead ends: 119 [2018-10-26 23:53:43,430 INFO L226 Difference]: Without dead ends: 116 [2018-10-26 23:53:43,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:53:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-26 23:53:43,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-10-26 23:53:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-10-26 23:53:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 138 transitions. [2018-10-26 23:53:43,444 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 138 transitions. Word has length 29 [2018-10-26 23:53:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:43,445 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 138 transitions. [2018-10-26 23:53:43,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:53:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 138 transitions. [2018-10-26 23:53:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 23:53:43,446 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:43,446 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:53:43,447 INFO L424 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:43,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:43,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1893770412, now seen corresponding path program 1 times [2018-10-26 23:53:43,447 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:43,448 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:43,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:43,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:43,666 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:43,678 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:43,678 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:43,706 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:43,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:43,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:43,846 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:43,877 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:43,912 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:43,913 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:23, output treesize:1 [2018-10-26 23:53:43,994 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 25 [2018-10-26 23:53:43,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-10-26 23:53:43,999 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,008 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 12 [2018-10-26 23:53:44,165 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2018-10-26 23:53:44,166 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,168 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,189 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 27 [2018-10-26 23:53:44,193 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 1 [2018-10-26 23:53:44,194 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,208 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 20 treesize of output 16 [2018-10-26 23:53:44,273 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-10-26 23:53:44,273 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,275 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:44,280 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:53:44,280 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:59, output treesize:9 [2018-10-26 23:53:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:53:44,296 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:44,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:44,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:53:44,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:53:44,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:53:44,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:53:44,302 INFO L87 Difference]: Start difference. First operand 116 states and 138 transitions. Second operand 5 states. [2018-10-26 23:53:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:44,811 INFO L93 Difference]: Finished difference Result 118 states and 139 transitions. [2018-10-26 23:53:44,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 23:53:44,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-10-26 23:53:44,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:44,816 INFO L225 Difference]: With dead ends: 118 [2018-10-26 23:53:44,816 INFO L226 Difference]: Without dead ends: 115 [2018-10-26 23:53:44,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:53:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-26 23:53:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-26 23:53:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-26 23:53:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2018-10-26 23:53:44,830 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 29 [2018-10-26 23:53:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:44,830 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2018-10-26 23:53:44,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:53:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2018-10-26 23:53:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 23:53:44,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:44,831 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:53:44,832 INFO L424 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:44,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:44,832 INFO L82 PathProgramCache]: Analyzing trace with hash 353144355, now seen corresponding path program 1 times [2018-10-26 23:53:44,834 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:44,834 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:53:44,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:44,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:44,982 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 13 [2018-10-26 23:53:44,985 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 13 treesize of output 16 [2018-10-26 23:53:44,990 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:44,993 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:53:44,994 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,003 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,010 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,021 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,022 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:24, output treesize:12 [2018-10-26 23:53:45,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 [2018-10-26 23:53:45,084 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:53:45,084 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,086 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,087 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:45,087 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-26 23:53:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:45,100 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:45,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:45,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:53:45,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:53:45,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:53:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:45,104 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand 8 states. [2018-10-26 23:53:46,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:46,209 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2018-10-26 23:53:46,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:53:46,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-10-26 23:53:46,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:46,215 INFO L225 Difference]: With dead ends: 151 [2018-10-26 23:53:46,215 INFO L226 Difference]: Without dead ends: 148 [2018-10-26 23:53:46,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:53:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-10-26 23:53:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 121. [2018-10-26 23:53:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-26 23:53:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2018-10-26 23:53:46,229 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 32 [2018-10-26 23:53:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:46,229 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2018-10-26 23:53:46,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:53:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2018-10-26 23:53:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 23:53:46,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:46,231 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:53:46,231 INFO L424 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:46,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:46,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1551790931, now seen corresponding path program 1 times [2018-10-26 23:53:46,232 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:46,232 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:46,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:46,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:46,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:53:46,435 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:53:46,435 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,437 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,457 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:53:46,460 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:53:46,460 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,469 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,477 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,477 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-10-26 23:53:46,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2018-10-26 23:53:46,575 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-10-26 23:53:46,576 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,582 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,592 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 15 [2018-10-26 23:53:46,595 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-10-26 23:53:46,595 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,597 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,602 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:46,602 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:40, output treesize:10 [2018-10-26 23:53:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:46,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:53:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:46,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:46,754 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:46,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:46,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:47,107 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 13 [2018-10-26 23:53:47,122 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 13 treesize of output 16 [2018-10-26 23:53:47,130 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:47,134 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:53:47,134 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,145 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,156 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,168 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,169 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:21, output treesize:8 [2018-10-26 23:53:47,513 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 [2018-10-26 23:53:47,516 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:53:47,516 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,519 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,521 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:47,521 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2018-10-26 23:53:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:47,546 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:47,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-26 23:53:47,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 17 [2018-10-26 23:53:47,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-26 23:53:47,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-26 23:53:47,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-10-26 23:53:47,580 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 17 states. [2018-10-26 23:53:50,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:50,103 INFO L93 Difference]: Finished difference Result 274 states and 324 transitions. [2018-10-26 23:53:50,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 23:53:50,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-26 23:53:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:50,106 INFO L225 Difference]: With dead ends: 274 [2018-10-26 23:53:50,106 INFO L226 Difference]: Without dead ends: 183 [2018-10-26 23:53:50,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2018-10-26 23:53:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-26 23:53:50,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 155. [2018-10-26 23:53:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-26 23:53:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 178 transitions. [2018-10-26 23:53:50,122 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 178 transitions. Word has length 32 [2018-10-26 23:53:50,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:50,123 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 178 transitions. [2018-10-26 23:53:50,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-26 23:53:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 178 transitions. [2018-10-26 23:53:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 23:53:50,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:50,124 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:53:50,124 INFO L424 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:50,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2053304096, now seen corresponding path program 1 times [2018-10-26 23:53:50,127 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:50,127 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:50,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:50,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:50,313 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:53:50,314 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,319 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,320 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 23:53:50,340 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:50,342 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:50,342 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-26 23:53:50,343 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,371 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:50,375 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:50,375 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,378 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,398 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:50,402 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:50,402 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,405 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,421 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,421 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:39, output treesize:25 [2018-10-26 23:53:50,547 INFO L303 Elim1Store]: Index analysis took 104 ms [2018-10-26 23:53:50,548 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 25 [2018-10-26 23:53:50,573 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 13 treesize of output 16 [2018-10-26 23:53:50,609 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:50,634 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:53:50,635 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,742 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:50,865 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 25 [2018-10-26 23:53:51,073 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 13 treesize of output 16 [2018-10-26 23:53:51,094 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:51,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:53:51,097 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,108 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,121 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,148 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,148 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:54, output treesize:41 [2018-10-26 23:53:51,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2018-10-26 23:53:51,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-10-26 23:53:51,298 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,343 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2018-10-26 23:53:51,344 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,349 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2018-10-26 23:53:51,385 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 6 treesize of output 4 [2018-10-26 23:53:51,386 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-10-26 23:53:51,417 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,420 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,424 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:51,424 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:68, output treesize:7 [2018-10-26 23:53:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:51,446 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:51,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:51,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:53:51,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:53:51,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:53:51,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:51,449 INFO L87 Difference]: Start difference. First operand 155 states and 178 transitions. Second operand 8 states. [2018-10-26 23:53:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:52,912 INFO L93 Difference]: Finished difference Result 175 states and 201 transitions. [2018-10-26 23:53:52,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:53:52,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-10-26 23:53:52,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:52,915 INFO L225 Difference]: With dead ends: 175 [2018-10-26 23:53:52,915 INFO L226 Difference]: Without dead ends: 172 [2018-10-26 23:53:52,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-26 23:53:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2018-10-26 23:53:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 158. [2018-10-26 23:53:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-10-26 23:53:52,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 180 transitions. [2018-10-26 23:53:52,930 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 180 transitions. Word has length 35 [2018-10-26 23:53:52,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:52,931 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 180 transitions. [2018-10-26 23:53:52,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:53:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 180 transitions. [2018-10-26 23:53:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-26 23:53:52,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:52,934 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 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, 1, 1] [2018-10-26 23:53:52,934 INFO L424 AbstractCegarLoop]: === Iteration 9 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:52,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:52,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2089349840, now seen corresponding path program 1 times [2018-10-26 23:53:52,936 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:52,936 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:53:52,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:53,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:53,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:53:53,175 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,185 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,185 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 23:53:53,200 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:53,202 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:53,203 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-26 23:53:53,204 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,234 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:53,244 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:53,244 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,248 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,265 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:53:53,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:53:53,268 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,271 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,283 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,284 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:39, output treesize:25 [2018-10-26 23:53:53,353 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 25 [2018-10-26 23:53:53,359 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 13 treesize of output 16 [2018-10-26 23:53:53,367 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:53,372 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:53:53,372 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,396 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,416 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,463 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 25 [2018-10-26 23:53:53,474 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 13 treesize of output 16 [2018-10-26 23:53:53,479 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:53:53,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:53:53,483 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,494 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,507 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,536 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,537 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:54, output treesize:41 [2018-10-26 23:53:53,709 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2018-10-26 23:53:53,729 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2018-10-26 23:53:53,730 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,868 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:53,868 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:53,942 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:54,045 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 22 [2018-10-26 23:53:54,057 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:54,057 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:54,064 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 6 treesize of output 4 [2018-10-26 23:53:54,065 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:54,068 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:54,072 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:54,072 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:68, output treesize:7 [2018-10-26 23:53:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 23:53:54,096 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:54,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:54,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 23:53:54,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:53:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:53:54,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:54,100 INFO L87 Difference]: Start difference. First operand 158 states and 180 transitions. Second operand 8 states. [2018-10-26 23:53:55,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:55,574 INFO L93 Difference]: Finished difference Result 174 states and 198 transitions. [2018-10-26 23:53:55,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:53:55,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-10-26 23:53:55,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:55,576 INFO L225 Difference]: With dead ends: 174 [2018-10-26 23:53:55,576 INFO L226 Difference]: Without dead ends: 171 [2018-10-26 23:53:55,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-26 23:53:55,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-26 23:53:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2018-10-26 23:53:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-26 23:53:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2018-10-26 23:53:55,589 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 41 [2018-10-26 23:53:55,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:55,589 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2018-10-26 23:53:55,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:53:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2018-10-26 23:53:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 23:53:55,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:55,591 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:55,591 INFO L424 AbstractCegarLoop]: === Iteration 10 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:55,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:55,591 INFO L82 PathProgramCache]: Analyzing trace with hash 634518420, now seen corresponding path program 1 times [2018-10-26 23:53:55,591 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:55,592 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:53:55,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:55,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:55,752 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:53:55,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:53:55,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:53:55,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:53:55,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:53:55,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:53:55,755 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand 6 states. [2018-10-26 23:53:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:53:55,921 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2018-10-26 23:53:55,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:53:55,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-10-26 23:53:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:53:55,923 INFO L225 Difference]: With dead ends: 189 [2018-10-26 23:53:55,924 INFO L226 Difference]: Without dead ends: 186 [2018-10-26 23:53:55,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:53:55,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-26 23:53:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 168. [2018-10-26 23:53:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-26 23:53:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 191 transitions. [2018-10-26 23:53:55,939 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 191 transitions. Word has length 45 [2018-10-26 23:53:55,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:53:55,939 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 191 transitions. [2018-10-26 23:53:55,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:53:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 191 transitions. [2018-10-26 23:53:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 23:53:55,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:53:55,942 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:53:55,943 INFO L424 AbstractCegarLoop]: === Iteration 11 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:53:55,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:53:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash 782045343, now seen corresponding path program 1 times [2018-10-26 23:53:55,943 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:53:55,943 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:53:55,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:56,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:56,394 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-26 23:53:56,433 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:53:56,445 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:53:56,445 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,470 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,617 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:53:56,629 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:53:56,629 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,657 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,715 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,715 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-10-26 23:53:56,893 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:53:56,896 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:56,896 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,899 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,906 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:53:56,908 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:56,909 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,910 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,914 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:56,914 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-10-26 23:53:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:56,945 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:53:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:57,130 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:53:57,130 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:53:57,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:53:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:53:57,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:53:57,178 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:53:57,180 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:53:57,180 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,182 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:53:57,197 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:53:57,197 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,200 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,207 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,207 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2018-10-26 23:53:57,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:53:57,300 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:57,300 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,302 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:53:57,317 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:53:57,317 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,319 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,326 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:53:57,326 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-10-26 23:53:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:57,332 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:53:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:53:57,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 23:53:57,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 7] total 12 [2018-10-26 23:53:57,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 23:53:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 23:53:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=103, Unknown=1, NotChecked=0, Total=132 [2018-10-26 23:53:57,385 INFO L87 Difference]: Start difference. First operand 168 states and 191 transitions. Second operand 12 states. [2018-10-26 23:54:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:00,341 INFO L93 Difference]: Finished difference Result 250 states and 293 transitions. [2018-10-26 23:54:00,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 23:54:00,342 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2018-10-26 23:54:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:00,344 INFO L225 Difference]: With dead ends: 250 [2018-10-26 23:54:00,344 INFO L226 Difference]: Without dead ends: 247 [2018-10-26 23:54:00,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 176 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=137, Unknown=1, NotChecked=0, Total=182 [2018-10-26 23:54:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-26 23:54:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 178. [2018-10-26 23:54:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-26 23:54:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 202 transitions. [2018-10-26 23:54:00,363 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 202 transitions. Word has length 48 [2018-10-26 23:54:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:00,364 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 202 transitions. [2018-10-26 23:54:00,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 23:54:00,364 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 202 transitions. [2018-10-26 23:54:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-26 23:54:00,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:00,366 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2018-10-26 23:54:00,366 INFO L424 AbstractCegarLoop]: === Iteration 12 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:00,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1144522333, now seen corresponding path program 1 times [2018-10-26 23:54:00,367 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:54:00,367 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:54:00,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:00,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:54:00,568 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:54:00,571 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:54:00,571 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:00,573 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:00,608 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:00,609 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2018-10-26 23:54:00,709 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 [2018-10-26 23:54:00,720 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:00,720 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:00,749 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:00,777 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:00,778 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2018-10-26 23:54:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:00,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:54:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:01,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:54:01,246 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 23:54:01,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:01,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:54:01,347 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:54:01,350 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:01,350 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,353 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,365 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:54:01,368 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:01,368 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,371 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,378 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,379 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:23, output treesize:1 [2018-10-26 23:54:01,489 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2018-10-26 23:54:01,491 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:01,492 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,498 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,520 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 treesize of output 10 [2018-10-26 23:54:01,522 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-10-26 23:54:01,523 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,524 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,538 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 21 [2018-10-26 23:54:01,540 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-10-26 23:54:01,541 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,547 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,559 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 [2018-10-26 23:54:01,561 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:01,561 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,563 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:01,566 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:54:01,566 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:47, output treesize:9 [2018-10-26 23:54:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 23:54:01,593 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:54:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-26 23:54:01,677 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 23:54:01,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 5, 5] total 16 [2018-10-26 23:54:01,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 23:54:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 23:54:01,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2018-10-26 23:54:01,678 INFO L87 Difference]: Start difference. First operand 178 states and 202 transitions. Second operand 16 states. [2018-10-26 23:54:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:04,372 INFO L93 Difference]: Finished difference Result 283 states and 329 transitions. [2018-10-26 23:54:04,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-26 23:54:04,373 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2018-10-26 23:54:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:04,374 INFO L225 Difference]: With dead ends: 283 [2018-10-26 23:54:04,375 INFO L226 Difference]: Without dead ends: 206 [2018-10-26 23:54:04,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2018-10-26 23:54:04,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-26 23:54:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2018-10-26 23:54:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-26 23:54:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2018-10-26 23:54:04,404 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 47 [2018-10-26 23:54:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:04,406 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2018-10-26 23:54:04,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 23:54:04,407 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2018-10-26 23:54:04,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-26 23:54:04,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:04,409 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:54:04,409 INFO L424 AbstractCegarLoop]: === Iteration 13 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:04,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:04,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2020394562, now seen corresponding path program 1 times [2018-10-26 23:54:04,410 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:54:04,410 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:54:04,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:04,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:54:04,578 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:54:04,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:04,582 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,594 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,608 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:54:04,611 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:04,611 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,614 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,632 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,632 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2018-10-26 23:54:04,750 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2018-10-26 23:54:04,752 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:04,753 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,759 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,782 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2018-10-26 23:54:04,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:04,786 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,792 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,808 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 treesize of output 10 [2018-10-26 23:54:04,812 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-10-26 23:54:04,813 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,815 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,825 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 12 treesize of output 10 [2018-10-26 23:54:04,827 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-10-26 23:54:04,827 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,828 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:04,832 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:54:04,832 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 6 variables, input treesize:47, output treesize:9 [2018-10-26 23:54:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:04,854 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:54:04,856 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:54:04,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-26 23:54:04,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 23:54:04,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 23:54:04,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:54:04,857 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand 11 states. [2018-10-26 23:54:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:06,560 INFO L93 Difference]: Finished difference Result 184 states and 208 transitions. [2018-10-26 23:54:06,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:54:06,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2018-10-26 23:54:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:06,561 INFO L225 Difference]: With dead ends: 184 [2018-10-26 23:54:06,561 INFO L226 Difference]: Without dead ends: 181 [2018-10-26 23:54:06,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-10-26 23:54:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-26 23:54:06,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 168. [2018-10-26 23:54:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-26 23:54:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2018-10-26 23:54:06,578 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 51 [2018-10-26 23:54:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:06,578 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2018-10-26 23:54:06,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-26 23:54:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2018-10-26 23:54:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 23:54:06,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:06,579 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:54:06,579 INFO L424 AbstractCegarLoop]: === Iteration 14 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:06,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1495778763, now seen corresponding path program 1 times [2018-10-26 23:54:06,580 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:54:06,583 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:54:06,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:06,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:54:06,917 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:54:06,917 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:06,968 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:06,968 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2018-10-26 23:54:06,984 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 13 [2018-10-26 23:54:06,989 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 13 treesize of output 16 [2018-10-26 23:54:06,993 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:06,996 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:54:06,997 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,005 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,012 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,026 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,026 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:29, output treesize:17 [2018-10-26 23:54:07,041 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:07,042 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:07,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-10-26 23:54:07,043 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,055 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,056 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2018-10-26 23:54:07,081 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:07,082 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:07,083 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:07,083 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-10-26 23:54:07,084 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,134 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 [2018-10-26 23:54:07,139 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:07,139 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,149 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,179 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,179 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:46, output treesize:27 [2018-10-26 23:54:07,215 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:54:07,221 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:54:07,221 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,227 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,272 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 26 [2018-10-26 23:54:07,276 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 13 treesize of output 16 [2018-10-26 23:54:07,281 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:07,282 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:54:07,283 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,321 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,334 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,365 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,365 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:53, output treesize:59 [2018-10-26 23:54:07,496 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:54:07,500 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:54:07,500 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,504 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,523 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:54:07,524 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:51 [2018-10-26 23:54:07,576 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 37 [2018-10-26 23:54:07,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:07,594 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-10-26 23:54:07,627 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,628 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,665 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:07,665 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:52, output treesize:4 [2018-10-26 23:54:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:07,699 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:54:26,225 WARN L179 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 32 [2018-10-26 23:54:26,479 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-10-26 23:54:26,493 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 62 [2018-10-26 23:54:26,596 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:54:26,596 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:26,601 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 51 treesize of output 51 [2018-10-26 23:54:26,607 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:26,612 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2018-10-26 23:54:26,613 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:26,643 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:26,679 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:26,724 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 57 [2018-10-26 23:54:27,037 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-26 23:54:27,049 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:27,172 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 59 [2018-10-26 23:54:27,173 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:27,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 29 [2018-10-26 23:54:27,428 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:27,431 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2018-10-26 23:54:27,431 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:27,445 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:27,449 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 29 [2018-10-26 23:54:27,460 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:27,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 19 [2018-10-26 23:54:27,467 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:27,482 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:27,487 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 39 treesize of output 31 [2018-10-26 23:54:27,498 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:27,522 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 28 [2018-10-26 23:54:27,523 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:27,586 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:54:27,754 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2018-10-26 23:54:27,762 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:27,765 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2018-10-26 23:54:27,765 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:27,813 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:27,842 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 23:54:27,843 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:27,917 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:54:27,949 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,011 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2018-10-26 23:54:28,037 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,139 INFO L303 Elim1Store]: Index analysis took 127 ms [2018-10-26 23:54:28,167 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 4 case distinctions, treesize of input 27 treesize of output 47 [2018-10-26 23:54:28,335 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-26 23:54:28,339 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,341 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 12 [2018-10-26 23:54:28,341 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:28,421 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,424 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 25 treesize of output 14 [2018-10-26 23:54:28,425 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:28,494 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,494 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,521 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,571 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 29 treesize of output 22 [2018-10-26 23:54:28,571 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:28,578 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:28,597 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 23:54:28,598 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:28,647 INFO L267 ElimStorePlain]: Start of recursive call 18: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:54:28,671 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:54:28,741 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:54:28,800 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:54:28,871 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2018-10-26 23:54:28,872 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:103, output treesize:133 [2018-10-26 23:54:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:29,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:54:29,017 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:54:29,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:29,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:54:29,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:54:29,097 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,104 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,104 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2018-10-26 23:54:29,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 13 [2018-10-26 23:54:29,165 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 13 treesize of output 16 [2018-10-26 23:54:29,189 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:29,193 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:54:29,193 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,202 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,209 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,224 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,224 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:29, output treesize:17 [2018-10-26 23:54:29,243 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:29,245 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:29,245 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-10-26 23:54:29,246 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,273 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2018-10-26 23:54:29,321 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:29,345 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:29,361 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:29,362 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-10-26 23:54:29,362 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 [2018-10-26 23:54:29,673 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:29,674 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,781 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,877 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,877 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:46, output treesize:27 [2018-10-26 23:54:29,889 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:54:29,894 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:54:29,894 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,900 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,960 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 26 [2018-10-26 23:54:29,964 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 13 treesize of output 16 [2018-10-26 23:54:29,969 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:29,970 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:54:29,970 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,981 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:29,994 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,048 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,048 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:53, output treesize:59 [2018-10-26 23:54:30,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:54:30,085 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:54:30,085 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,089 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,109 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:54:30,109 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:51 [2018-10-26 23:54:30,132 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 37 [2018-10-26 23:54:30,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:30,136 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,148 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-10-26 23:54:30,149 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,150 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,151 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:30,152 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:52, output treesize:4 [2018-10-26 23:54:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:30,162 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:54:48,042 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-10-26 23:54:48,054 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 62 [2018-10-26 23:54:48,135 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:54:48,135 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:48,140 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 51 treesize of output 51 [2018-10-26 23:54:48,146 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:48,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2018-10-26 23:54:48,153 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:48,186 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:48,223 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:48,270 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 57 [2018-10-26 23:54:48,527 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-26 23:54:48,533 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:48,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 59 [2018-10-26 23:54:48,628 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:48,859 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:48,869 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2018-10-26 23:54:48,873 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:48,912 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 4 case distinctions, treesize of input 27 treesize of output 47 [2018-10-26 23:54:49,258 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-26 23:54:49,261 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,264 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 25 treesize of output 14 [2018-10-26 23:54:49,265 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:49,350 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,352 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 12 [2018-10-26 23:54:49,352 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:49,427 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,428 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,428 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 29 treesize of output 22 [2018-10-26 23:54:49,434 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:49,438 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,461 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 23:54:49,462 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:49,510 INFO L267 ElimStorePlain]: Start of recursive call 9: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:54:49,535 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:54:49,560 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2018-10-26 23:54:49,566 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2018-10-26 23:54:49,569 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:49,619 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 23:54:49,648 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 4 xjuncts. [2018-10-26 23:54:49,725 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:54:49,944 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 29 treesize of output 23 [2018-10-26 23:54:49,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2018-10-26 23:54:49,958 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-10-26 23:54:49,979 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:54:49,983 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 29 [2018-10-26 23:54:49,987 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:49,993 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 19 [2018-10-26 23:54:49,993 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:50,080 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:50,156 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:54:50,213 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:54:50,288 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2018-10-26 23:54:50,289 INFO L202 ElimStorePlain]: Needed 20 recursive calls to eliminate 6 variables, input treesize:103, output treesize:133 [2018-10-26 23:54:50,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:50,445 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 23:54:50,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12] total 20 [2018-10-26 23:54:50,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-26 23:54:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-26 23:54:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=326, Unknown=6, NotChecked=0, Total=380 [2018-10-26 23:54:50,446 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand 20 states. [2018-10-26 23:54:51,349 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2018-10-26 23:54:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:54:55,693 INFO L93 Difference]: Finished difference Result 209 states and 236 transitions. [2018-10-26 23:54:55,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:54:55,694 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 53 [2018-10-26 23:54:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:54:55,695 INFO L225 Difference]: With dead ends: 209 [2018-10-26 23:54:55,695 INFO L226 Difference]: Without dead ends: 206 [2018-10-26 23:54:55,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 190 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=114, Invalid=582, Unknown=6, NotChecked=0, Total=702 [2018-10-26 23:54:55,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-10-26 23:54:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 180. [2018-10-26 23:54:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-10-26 23:54:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 202 transitions. [2018-10-26 23:54:55,714 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 202 transitions. Word has length 53 [2018-10-26 23:54:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:54:55,714 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 202 transitions. [2018-10-26 23:54:55,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-26 23:54:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 202 transitions. [2018-10-26 23:54:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 23:54:55,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:54:55,715 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:54:55,716 INFO L424 AbstractCegarLoop]: === Iteration 15 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:54:55,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:54:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash -409156523, now seen corresponding path program 1 times [2018-10-26 23:54:55,716 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:54:55,719 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:54:55,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:54:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:54:56,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:54:56,081 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:54:56,081 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,088 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,088 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:13 [2018-10-26 23:54:56,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 13 [2018-10-26 23:54:56,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-10-26 23:54:56,134 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:56,137 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:54:56,138 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,147 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,154 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,169 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,169 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:29, output treesize:17 [2018-10-26 23:54:56,184 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:56,185 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:56,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-10-26 23:54:56,186 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,200 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,200 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2018-10-26 23:54:56,243 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:56,244 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:56,245 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:54:56,246 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-10-26 23:54:56,246 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,289 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 [2018-10-26 23:54:56,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:54:56,294 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,303 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,332 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,332 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:46, output treesize:27 [2018-10-26 23:54:56,425 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 26 [2018-10-26 23:54:56,429 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 16 [2018-10-26 23:54:56,450 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:54:56,451 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:54:56,452 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,462 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,476 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,512 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:54:56,516 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:54:56,516 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,527 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,556 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,557 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:53, output treesize:59 [2018-10-26 23:54:56,697 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2018-10-26 23:54:56,701 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:54:56,701 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,706 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,726 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:54:56,727 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:51 [2018-10-26 23:54:56,787 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 37 [2018-10-26 23:54:56,790 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2018-10-26 23:54:56,790 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-10-26 23:54:56,804 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,805 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,807 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:54:56,807 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:52, output treesize:4 [2018-10-26 23:54:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:54:56,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:55:09,876 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 27 [2018-10-26 23:55:18,624 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2018-10-26 23:55:18,649 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 62 [2018-10-26 23:55:18,763 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-10-26 23:55:18,775 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:55:18,775 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:18,780 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 51 treesize of output 51 [2018-10-26 23:55:18,788 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:18,794 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 51 [2018-10-26 23:55:18,795 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:18,866 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:18,904 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:18,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 57 [2018-10-26 23:55:19,217 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2018-10-26 23:55:19,221 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:19,324 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 59 [2018-10-26 23:55:19,325 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-10-26 23:55:19,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 29 [2018-10-26 23:55:19,579 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:19,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 21 treesize of output 14 [2018-10-26 23:55:19,586 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:19,597 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:19,601 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 39 treesize of output 31 [2018-10-26 23:55:19,605 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:19,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 28 [2018-10-26 23:55:19,638 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 4 xjuncts. [2018-10-26 23:55:19,704 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:55:19,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 35 treesize of output 29 [2018-10-26 23:55:19,711 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:19,714 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 8 [2018-10-26 23:55:19,714 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:19,729 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:19,879 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:19,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2018-10-26 23:55:19,891 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:19,934 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 4 case distinctions, treesize of input 27 treesize of output 47 [2018-10-26 23:55:20,113 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-10-26 23:55:20,116 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,119 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 25 treesize of output 14 [2018-10-26 23:55:20,120 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:20,235 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 12 [2018-10-26 23:55:20,238 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:20,312 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,313 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,313 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,319 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 29 treesize of output 22 [2018-10-26 23:55:20,320 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:20,324 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,346 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 23:55:20,346 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 4 xjuncts. [2018-10-26 23:55:20,399 INFO L267 ElimStorePlain]: Start of recursive call 15: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:55:20,429 INFO L267 ElimStorePlain]: Start of recursive call 14: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:55:20,459 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2018-10-26 23:55:20,466 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,469 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 16 [2018-10-26 23:55:20,469 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:20,519 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:20,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 31 [2018-10-26 23:55:20,557 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 4 xjuncts. [2018-10-26 23:55:20,671 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:55:20,749 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:55:20,813 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:55:20,885 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 6 xjuncts. [2018-10-26 23:55:20,885 INFO L202 ElimStorePlain]: Needed 22 recursive calls to eliminate 6 variables, input treesize:103, output treesize:133 [2018-10-26 23:55:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:55:21,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:55:21,060 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:55:21,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:55:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:55:21,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:55:21,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:55:21,182 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,190 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,191 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-10-26 23:55:21,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:55:21,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:55:21,252 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,254 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,268 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 10 [2018-10-26 23:55:21,270 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-10-26 23:55:21,270 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,273 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,282 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,283 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2018-10-26 23:55:21,345 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:21,346 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:21,346 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-10-26 23:55:21,346 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,359 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,359 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:30 [2018-10-26 23:55:21,453 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 22 [2018-10-26 23:55:21,460 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:55:21,460 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,472 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,516 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 22 [2018-10-26 23:55:21,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:55:21,520 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,531 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,560 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,560 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:55, output treesize:33 [2018-10-26 23:55:21,699 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 36 [2018-10-26 23:55:21,704 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 25 treesize of output 27 [2018-10-26 23:55:21,709 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:21,714 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:55:21,714 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,737 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,841 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,930 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 36 [2018-10-26 23:55:21,934 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 25 treesize of output 27 [2018-10-26 23:55:21,939 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:21,940 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:55:21,940 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:21,955 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:22,019 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:22,020 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 28 [2018-10-26 23:55:22,024 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:22,025 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:22,028 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 37 [2018-10-26 23:55:22,028 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:22,043 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:22,069 INFO L267 ElimStorePlain]: Start of recursive call 5: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:22,124 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:22,124 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:58, output treesize:119 [2018-10-26 23:55:22,319 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2018-10-26 23:55:22,840 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 71 treesize of output 64 [2018-10-26 23:55:22,844 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:22,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2018-10-26 23:55:22,845 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:22,870 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:22,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 82 [2018-10-26 23:55:22,965 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:22,966 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-10-26 23:55:22,967 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:23,058 INFO L267 ElimStorePlain]: Start of recursive call 4: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:23,122 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-26 23:55:23,122 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:154, output treesize:102 [2018-10-26 23:55:23,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 43 treesize of output 31 [2018-10-26 23:55:23,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2018-10-26 23:55:23,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:23,563 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:23,568 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:23,568 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:43, output treesize:4 [2018-10-26 23:55:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:55:23,581 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:55:27,858 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-10-26 23:55:39,155 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-10-26 23:55:39,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 92 [2018-10-26 23:55:39,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:55:39,194 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:39,353 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 76 [2018-10-26 23:55:39,673 WARN L179 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2018-10-26 23:55:39,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 72 [2018-10-26 23:55:39,833 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:39,911 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 57 treesize of output 65 [2018-10-26 23:55:39,912 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:40,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 63 [2018-10-26 23:55:40,174 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:40,236 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 50 [2018-10-26 23:55:40,237 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:40,772 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 42 [2018-10-26 23:55:40,772 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:40,777 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 55 [2018-10-26 23:55:40,777 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:41,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2018-10-26 23:55:41,216 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 41 [2018-10-26 23:55:41,360 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-10-26 23:55:41,381 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:41,413 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:41,414 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 24 treesize of output 17 [2018-10-26 23:55:41,414 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:41,757 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:41,760 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:41,768 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 28 [2018-10-26 23:55:41,769 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:41,772 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:41,775 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2018-10-26 23:55:41,776 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:41,821 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:55:41,862 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:55:41,862 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:41,887 INFO L267 ElimStorePlain]: Start of recursive call 11: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:55:41,895 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 34 [2018-10-26 23:55:41,899 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 9 [2018-10-26 23:55:41,900 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:41,918 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:55:41,918 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:41,926 INFO L267 ElimStorePlain]: Start of recursive call 17: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:42,267 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 56 treesize of output 52 [2018-10-26 23:55:42,383 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 5 case distinctions, treesize of input 40 treesize of output 62 [2018-10-26 23:55:43,698 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 149 DAG size of output: 127 [2018-10-26 23:55:43,749 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:43,750 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:43,751 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:43,763 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 35 [2018-10-26 23:55:43,763 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:44,474 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:44,478 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:44,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 36 [2018-10-26 23:55:44,487 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:44,782 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:44,783 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:44,783 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2018-10-26 23:55:44,784 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:45,290 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,291 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,301 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,302 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,304 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:45,326 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 2 case distinctions, treesize of input 41 treesize of output 43 [2018-10-26 23:55:45,327 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:45,672 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,684 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,725 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 4 case distinctions, treesize of input 37 treesize of output 54 [2018-10-26 23:55:45,726 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 16 xjuncts. [2018-10-26 23:55:45,983 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,984 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,984 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:45,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2018-10-26 23:55:45,987 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,132 INFO L267 ElimStorePlain]: Start of recursive call 21: 7 dim-1 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:55:46,248 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:55:46,253 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 39 treesize of output 33 [2018-10-26 23:55:46,258 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 20 treesize of output 13 [2018-10-26 23:55:46,258 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,275 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,279 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 52 treesize of output 50 [2018-10-26 23:55:46,314 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 37 [2018-10-26 23:55:46,406 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:55:46,406 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,408 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:55:46,408 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,412 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:46,412 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 30 treesize of output 20 [2018-10-26 23:55:46,413 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,416 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:46,417 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:46,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 30 treesize of output 23 [2018-10-26 23:55:46,418 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:46,501 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:46,506 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:46,519 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 2 case distinctions, treesize of input 29 treesize of output 30 [2018-10-26 23:55:46,519 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:46,549 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:46,574 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:46,579 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 43 treesize of output 35 [2018-10-26 23:55:46,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 27 [2018-10-26 23:55:46,614 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 4 xjuncts. [2018-10-26 23:55:46,679 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:55:47,104 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 12 xjuncts. [2018-10-26 23:55:47,295 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 12 xjuncts. [2018-10-26 23:55:49,077 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 132 [2018-10-26 23:55:49,101 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:55:49,102 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:49,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 57 [2018-10-26 23:55:49,510 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2018-10-26 23:55:49,517 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 34 [2018-10-26 23:55:49,517 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:49,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2018-10-26 23:55:49,539 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:49,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2018-10-26 23:55:49,562 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:50,444 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 49 [2018-10-26 23:55:50,444 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:50,558 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 42 [2018-10-26 23:55:50,559 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:51,449 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2018-10-26 23:55:51,456 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 3 [2018-10-26 23:55:51,456 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:51,505 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:55:51,505 INFO L267 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:51,539 INFO L267 ElimStorePlain]: Start of recursive call 47: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:55:51,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 38 [2018-10-26 23:55:51,585 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 2 case distinctions, treesize of input 22 treesize of output 32 [2018-10-26 23:55:51,653 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:51,654 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-10-26 23:55:51,654 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:51,718 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2018-10-26 23:55:51,719 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:51,756 INFO L267 ElimStorePlain]: Start of recursive call 51: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:51,912 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:55:51,912 INFO L267 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:52,016 INFO L267 ElimStorePlain]: Start of recursive call 50: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:53,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 41 [2018-10-26 23:55:53,211 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 2 case distinctions, treesize of input 29 treesize of output 39 [2018-10-26 23:55:53,330 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2018-10-26 23:55:53,336 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:53,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2018-10-26 23:55:53,338 INFO L267 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:53,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2018-10-26 23:55:53,523 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:53,666 INFO L267 ElimStorePlain]: Start of recursive call 56: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:55:54,025 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 5 case distinctions, treesize of input 32 treesize of output 57 [2018-10-26 23:55:54,821 WARN L179 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2018-10-26 23:55:54,829 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:54,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2018-10-26 23:55:54,830 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:55,937 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 31 [2018-10-26 23:55:55,938 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 4 xjuncts. [2018-10-26 23:55:57,241 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:55:57,244 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:55:57,256 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 26 [2018-10-26 23:55:57,256 INFO L267 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2018-10-26 23:55:58,079 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 36 [2018-10-26 23:55:58,080 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 8 xjuncts. [2018-10-26 23:55:58,810 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 23 [2018-10-26 23:55:58,810 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 2 xjuncts. [2018-10-26 23:55:59,826 INFO L267 ElimStorePlain]: Start of recursive call 59: 7 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:56:00,315 INFO L267 ElimStorePlain]: Start of recursive call 55: 2 dim-1 vars, End of recursive call: and 6 xjuncts. [2018-10-26 23:56:00,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 34 [2018-10-26 23:56:00,363 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2018-10-26 23:56:00,363 INFO L267 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:00,492 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2018-10-26 23:56:00,493 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:00,640 INFO L267 ElimStorePlain]: Start of recursive call 65: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:01,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 38 treesize of output 38 [2018-10-26 23:56:01,651 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 2 case distinctions, treesize of input 20 treesize of output 28 [2018-10-26 23:56:01,755 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 21 [2018-10-26 23:56:01,755 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:01,815 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:01,816 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-10-26 23:56:01,817 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:01,842 INFO L267 ElimStorePlain]: Start of recursive call 69: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:01,969 INFO L267 ElimStorePlain]: Start of recursive call 68: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:01,997 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 31 treesize of output 27 [2018-10-26 23:56:02,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2018-10-26 23:56:02,008 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:02,061 INFO L267 ElimStorePlain]: Start of recursive call 72: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:02,627 INFO L267 ElimStorePlain]: Start of recursive call 41: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:56:03,097 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:56:04,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 69 [2018-10-26 23:56:04,604 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:04,604 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:04,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 56 [2018-10-26 23:56:04,885 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 23:56:05,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 48 [2018-10-26 23:56:05,007 INFO L267 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:05,007 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:56:05,008 INFO L267 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:05,131 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2018-10-26 23:56:05,131 INFO L267 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:05,249 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2018-10-26 23:56:05,254 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:05,256 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 24 treesize of output 27 [2018-10-26 23:56:05,290 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,290 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2018-10-26 23:56:05,291 INFO L267 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:05,299 INFO L267 ElimStorePlain]: Start of recursive call 81: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:05,326 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:05,348 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 3 case distinctions, treesize of input 27 treesize of output 47 [2018-10-26 23:56:05,540 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2018-10-26 23:56:05,546 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,551 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,565 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 1 case distinctions, treesize of input 30 treesize of output 26 [2018-10-26 23:56:05,565 INFO L267 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:05,639 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,640 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2018-10-26 23:56:05,641 INFO L267 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:05,723 INFO L267 ElimStorePlain]: Start of recursive call 83: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:05,746 INFO L267 ElimStorePlain]: Start of recursive call 80: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:56:05,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 27 [2018-10-26 23:56:05,866 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 19 treesize of output 27 [2018-10-26 23:56:05,920 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,925 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:05,937 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 26 [2018-10-26 23:56:05,937 INFO L267 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 4 xjuncts. [2018-10-26 23:56:05,942 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:56:05,943 INFO L267 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,008 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:06,009 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:06,010 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2018-10-26 23:56:06,010 INFO L267 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,035 INFO L267 ElimStorePlain]: Start of recursive call 87: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:06,058 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 22 treesize of output 25 [2018-10-26 23:56:06,091 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:56:06,091 INFO L267 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,095 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:06,095 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:06,096 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 16 treesize of output 10 [2018-10-26 23:56:06,096 INFO L267 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,111 INFO L267 ElimStorePlain]: Start of recursive call 91: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,129 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-10-26 23:56:06,129 INFO L267 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,139 INFO L267 ElimStorePlain]: Start of recursive call 86: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:06,158 INFO L267 ElimStorePlain]: Start of recursive call 76: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:06,181 INFO L267 ElimStorePlain]: Start of recursive call 74: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:06,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 72 [2018-10-26 23:56:06,200 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:06,200 INFO L267 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,293 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2018-10-26 23:56:06,364 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-10-26 23:56:06,364 INFO L267 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,388 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 treesize of output 13 [2018-10-26 23:56:06,392 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:06,395 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2018-10-26 23:56:06,395 INFO L267 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,398 INFO L267 ElimStorePlain]: Start of recursive call 99: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,401 INFO L267 ElimStorePlain]: Start of recursive call 97: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,423 INFO L267 ElimStorePlain]: Start of recursive call 95: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,436 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 65 [2018-10-26 23:56:06,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:06,442 INFO L267 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,529 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2018-10-26 23:56:06,580 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:56:06,580 INFO L267 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-10-26 23:56:06,633 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:06,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2018-10-26 23:56:06,638 INFO L267 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,651 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:56:06,652 INFO L267 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,654 INFO L267 ElimStorePlain]: Start of recursive call 105: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,656 INFO L267 ElimStorePlain]: Start of recursive call 103: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,670 INFO L267 ElimStorePlain]: Start of recursive call 101: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,686 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 67 [2018-10-26 23:56:06,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:06,693 INFO L267 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:06,834 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 56 [2018-10-26 23:56:07,048 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 23:56:07,049 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:56:07,049 INFO L267 ElimStorePlain]: Start of recursive call 111: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,054 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-10-26 23:56:07,055 INFO L267 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,193 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 36 [2018-10-26 23:56:07,194 INFO L267 ElimStorePlain]: Start of recursive call 113: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,281 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2018-10-26 23:56:07,286 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,290 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 5 [2018-10-26 23:56:07,290 INFO L267 ElimStorePlain]: Start of recursive call 115: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:56:07,306 INFO L267 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,310 INFO L267 ElimStorePlain]: Start of recursive call 114: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,387 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2018-10-26 23:56:07,392 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-10-26 23:56:07,392 INFO L267 ElimStorePlain]: Start of recursive call 118: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,440 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-10-26 23:56:07,440 INFO L267 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,477 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,492 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 19 [2018-10-26 23:56:07,492 INFO L267 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:07,515 INFO L267 ElimStorePlain]: Start of recursive call 117: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:07,547 INFO L267 ElimStorePlain]: Start of recursive call 110: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:07,576 INFO L267 ElimStorePlain]: Start of recursive call 108: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:07,589 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 71 [2018-10-26 23:56:07,595 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:07,595 INFO L267 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,655 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2018-10-26 23:56:07,732 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:56:07,732 INFO L267 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,770 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 30 [2018-10-26 23:56:07,775 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,779 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 29 [2018-10-26 23:56:07,814 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,817 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2018-10-26 23:56:07,817 INFO L267 ElimStorePlain]: Start of recursive call 127: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,826 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,826 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:07,833 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 24 treesize of output 20 [2018-10-26 23:56:07,833 INFO L267 ElimStorePlain]: Start of recursive call 128: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,870 INFO L267 ElimStorePlain]: Start of recursive call 126: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:07,899 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:56:07,899 INFO L267 ElimStorePlain]: Start of recursive call 129: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:07,914 INFO L267 ElimStorePlain]: Start of recursive call 125: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:07,928 INFO L267 ElimStorePlain]: Start of recursive call 123: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:07,959 INFO L267 ElimStorePlain]: Start of recursive call 121: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:07,968 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 76 [2018-10-26 23:56:07,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:07,975 INFO L267 ElimStorePlain]: Start of recursive call 131: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,049 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2018-10-26 23:56:08,119 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2018-10-26 23:56:08,119 INFO L267 ElimStorePlain]: Start of recursive call 133: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,155 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 19 [2018-10-26 23:56:08,161 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 19 treesize of output 25 [2018-10-26 23:56:08,190 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:56:08,190 INFO L267 ElimStorePlain]: Start of recursive call 136: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,194 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:08,195 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:08,200 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:08,201 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2018-10-26 23:56:08,201 INFO L267 ElimStorePlain]: Start of recursive call 137: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,215 INFO L267 ElimStorePlain]: Start of recursive call 135: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,222 INFO L267 ElimStorePlain]: Start of recursive call 134: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,230 INFO L267 ElimStorePlain]: Start of recursive call 132: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,258 INFO L267 ElimStorePlain]: Start of recursive call 130: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,282 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 69 [2018-10-26 23:56:08,292 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-10-26 23:56:08,292 INFO L267 ElimStorePlain]: Start of recursive call 139: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,471 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 56 [2018-10-26 23:56:08,666 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2018-10-26 23:56:08,671 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2018-10-26 23:56:08,671 INFO L267 ElimStorePlain]: Start of recursive call 141: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,676 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2018-10-26 23:56:08,676 INFO L267 ElimStorePlain]: Start of recursive call 142: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,947 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2018-10-26 23:56:08,947 INFO L267 ElimStorePlain]: Start of recursive call 143: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:08,956 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2018-10-26 23:56:08,956 INFO L267 ElimStorePlain]: Start of recursive call 144: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:09,221 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33 [2018-10-26 23:56:09,226 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,229 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 21 treesize of output 12 [2018-10-26 23:56:09,229 INFO L267 ElimStorePlain]: Start of recursive call 146: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:09,276 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,292 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 1 case distinctions, treesize of input 24 treesize of output 22 [2018-10-26 23:56:09,293 INFO L267 ElimStorePlain]: Start of recursive call 147: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:09,328 INFO L267 ElimStorePlain]: Start of recursive call 145: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:09,361 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 40 [2018-10-26 23:56:09,365 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,370 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2018-10-26 23:56:09,423 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,425 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2018-10-26 23:56:09,426 INFO L267 ElimStorePlain]: Start of recursive call 150: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:09,431 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,432 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,432 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,435 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,439 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2018-10-26 23:56:09,440 INFO L267 ElimStorePlain]: Start of recursive call 151: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:09,476 INFO L267 ElimStorePlain]: Start of recursive call 149: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:56:09,547 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,578 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 2 case distinctions, treesize of input 31 treesize of output 49 [2018-10-26 23:56:09,802 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2018-10-26 23:56:09,813 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,813 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,814 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,825 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,846 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 2 case distinctions, treesize of input 42 treesize of output 48 [2018-10-26 23:56:09,847 INFO L267 ElimStorePlain]: Start of recursive call 153: End of recursive call: and 4 xjuncts. [2018-10-26 23:56:09,853 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:09,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 34 [2018-10-26 23:56:09,865 INFO L267 ElimStorePlain]: Start of recursive call 154: End of recursive call: and 2 xjuncts. [2018-10-26 23:56:10,088 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:10,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 18 [2018-10-26 23:56:10,091 INFO L267 ElimStorePlain]: Start of recursive call 155: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:10,094 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:10,095 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:10,096 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:10,099 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:10,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2018-10-26 23:56:10,102 INFO L267 ElimStorePlain]: Start of recursive call 156: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:10,162 INFO L267 ElimStorePlain]: Start of recursive call 152: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:56:10,214 INFO L267 ElimStorePlain]: Start of recursive call 148: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-10-26 23:56:10,494 INFO L267 ElimStorePlain]: Start of recursive call 140: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:56:10,584 INFO L267 ElimStorePlain]: Start of recursive call 138: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 7 xjuncts. [2018-10-26 23:56:11,379 INFO L267 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 3 dim-2 vars, End of recursive call: 14 dim-0 vars, and 17 xjuncts. [2018-10-26 23:56:11,379 INFO L202 ElimStorePlain]: Needed 156 recursive calls to eliminate 13 variables, input treesize:323, output treesize:304 [2018-10-26 23:56:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:13,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-10-26 23:56:13,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14, 14] total 40 [2018-10-26 23:56:13,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-26 23:56:13,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-26 23:56:13,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1424, Unknown=16, NotChecked=0, Total=1560 [2018-10-26 23:56:13,806 INFO L87 Difference]: Start difference. First operand 180 states and 202 transitions. Second operand 40 states. [2018-10-26 23:56:16,326 WARN L179 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 67 [2018-10-26 23:56:18,346 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2018-10-26 23:56:18,893 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-26 23:56:20,158 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 61 [2018-10-26 23:56:20,924 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 52 [2018-10-26 23:56:22,237 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2018-10-26 23:56:23,272 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2018-10-26 23:56:24,039 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 92 [2018-10-26 23:56:24,897 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 67 [2018-10-26 23:56:27,931 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 70 [2018-10-26 23:56:31,930 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 71 [2018-10-26 23:56:33,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:33,052 INFO L93 Difference]: Finished difference Result 350 states and 400 transitions. [2018-10-26 23:56:33,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-26 23:56:33,055 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 53 [2018-10-26 23:56:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:33,056 INFO L225 Difference]: With dead ends: 350 [2018-10-26 23:56:33,056 INFO L226 Difference]: Without dead ends: 272 [2018-10-26 23:56:33,058 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 49.8s TimeCoverageRelationStatistics Valid=401, Invalid=3122, Unknown=17, NotChecked=0, Total=3540 [2018-10-26 23:56:33,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-10-26 23:56:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 246. [2018-10-26 23:56:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-10-26 23:56:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 272 transitions. [2018-10-26 23:56:33,083 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 272 transitions. Word has length 53 [2018-10-26 23:56:33,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:33,083 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 272 transitions. [2018-10-26 23:56:33,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-26 23:56:33,084 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 272 transitions. [2018-10-26 23:56:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 23:56:33,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:33,087 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:33,087 INFO L424 AbstractCegarLoop]: === Iteration 16 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:33,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:33,087 INFO L82 PathProgramCache]: Analyzing trace with hash -427631561, now seen corresponding path program 1 times [2018-10-26 23:56:33,087 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:56:33,088 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:56:33,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:33,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:56:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:33,564 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:56:33,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:33,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:56:33,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:56:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:56:33,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:56:33,568 INFO L87 Difference]: Start difference. First operand 246 states and 272 transitions. Second operand 6 states. [2018-10-26 23:56:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:33,870 INFO L93 Difference]: Finished difference Result 313 states and 357 transitions. [2018-10-26 23:56:33,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 23:56:33,872 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2018-10-26 23:56:33,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:33,874 INFO L225 Difference]: With dead ends: 313 [2018-10-26 23:56:33,874 INFO L226 Difference]: Without dead ends: 259 [2018-10-26 23:56:33,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:56:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-26 23:56:33,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 252. [2018-10-26 23:56:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-26 23:56:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 280 transitions. [2018-10-26 23:56:33,918 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 280 transitions. Word has length 56 [2018-10-26 23:56:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:33,918 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 280 transitions. [2018-10-26 23:56:33,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:56:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 280 transitions. [2018-10-26 23:56:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-26 23:56:33,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:33,920 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:33,920 INFO L424 AbstractCegarLoop]: === Iteration 17 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:33,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash -971865271, now seen corresponding path program 1 times [2018-10-26 23:56:33,932 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:56:33,932 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:56:33,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:34,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:56:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 23:56:34,992 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:56:34,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:34,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 23:56:34,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 23:56:34,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 23:56:34,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:56:34,995 INFO L87 Difference]: Start difference. First operand 252 states and 280 transitions. Second operand 10 states. [2018-10-26 23:56:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:35,672 INFO L93 Difference]: Finished difference Result 295 states and 338 transitions. [2018-10-26 23:56:35,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 23:56:35,674 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-10-26 23:56:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:35,676 INFO L225 Difference]: With dead ends: 295 [2018-10-26 23:56:35,676 INFO L226 Difference]: Without dead ends: 292 [2018-10-26 23:56:35,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2018-10-26 23:56:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-26 23:56:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 265. [2018-10-26 23:56:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-26 23:56:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 301 transitions. [2018-10-26 23:56:35,711 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 301 transitions. Word has length 57 [2018-10-26 23:56:35,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:35,711 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 301 transitions. [2018-10-26 23:56:35,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 23:56:35,711 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 301 transitions. [2018-10-26 23:56:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-26 23:56:35,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:35,713 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:35,713 INFO L424 AbstractCegarLoop]: === Iteration 18 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:35,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:35,713 INFO L82 PathProgramCache]: Analyzing trace with hash -908248625, now seen corresponding path program 1 times [2018-10-26 23:56:35,713 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:56:35,713 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/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 [2018-10-26 23:56:35,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:35,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:56:35,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:56:35,905 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:56:35,905 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:35,909 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:35,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:56:35,927 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:56:35,928 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:35,931 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:35,942 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:35,942 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2018-10-26 23:56:36,152 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 53 [2018-10-26 23:56:36,155 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 49 treesize of output 41 [2018-10-26 23:56:36,155 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:56:36,190 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2018-10-26 23:56:36,190 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,226 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2018-10-26 23:56:36,226 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-10-26 23:56:36,255 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-10-26 23:56:36,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2018-10-26 23:56:36,352 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 13 [2018-10-26 23:56:36,353 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,374 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2018-10-26 23:56:36,374 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,386 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,390 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2018-10-26 23:56:36,393 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:56:36,393 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,402 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 6 treesize of output 4 [2018-10-26 23:56:36,403 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,407 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,411 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:36,411 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 3 variables, input treesize:61, output treesize:7 [2018-10-26 23:56:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:36,442 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 23:56:36,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:56:36,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-10-26 23:56:36,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 23:56:36,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 23:56:36,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=107, Unknown=3, NotChecked=0, Total=132 [2018-10-26 23:56:36,446 INFO L87 Difference]: Start difference. First operand 265 states and 301 transitions. Second operand 12 states. [2018-10-26 23:56:38,399 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2018-10-26 23:56:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:56:39,006 INFO L93 Difference]: Finished difference Result 285 states and 324 transitions. [2018-10-26 23:56:39,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 23:56:39,008 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2018-10-26 23:56:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:56:39,009 INFO L225 Difference]: With dead ends: 285 [2018-10-26 23:56:39,010 INFO L226 Difference]: Without dead ends: 280 [2018-10-26 23:56:39,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=280, Unknown=4, NotChecked=0, Total=342 [2018-10-26 23:56:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-10-26 23:56:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 269. [2018-10-26 23:56:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-26 23:56:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 305 transitions. [2018-10-26 23:56:39,036 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 305 transitions. Word has length 57 [2018-10-26 23:56:39,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:56:39,036 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 305 transitions. [2018-10-26 23:56:39,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 23:56:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 305 transitions. [2018-10-26 23:56:39,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-26 23:56:39,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:56:39,043 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:56:39,044 INFO L424 AbstractCegarLoop]: === Iteration 19 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:56:39,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:56:39,044 INFO L82 PathProgramCache]: Analyzing trace with hash 364164728, now seen corresponding path program 1 times [2018-10-26 23:56:39,044 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-26 23:56:39,044 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1e9e9795-ee7b-4558-9f2e-f80612bb2624/bin-2019/utaipan/cvc4nyu Starting monitored process 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:56:39,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:56:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:56:39,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 23:56:39,405 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-26 23:56:39,405 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,415 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,415 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-10-26 23:56:39,428 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,433 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,434 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-10-26 23:56:39,434 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,479 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:56:39,482 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:56:39,482 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,486 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,508 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 8 [2018-10-26 23:56:39,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:56:39,511 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,515 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,532 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,532 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:45, output treesize:36 [2018-10-26 23:56:39,581 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 25 [2018-10-26 23:56:39,585 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 13 treesize of output 16 [2018-10-26 23:56:39,591 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,595 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:56:39,595 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,608 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,625 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 24 treesize of output 29 [2018-10-26 23:56:39,689 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 13 treesize of output 16 [2018-10-26 23:56:39,696 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,700 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:56:39,700 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,712 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,728 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,766 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,766 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:65, output treesize:56 [2018-10-26 23:56:39,799 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,801 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,803 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:39,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 58 [2018-10-26 23:56:39,804 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,837 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:39,837 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:67, output treesize:75 [2018-10-26 23:56:39,891 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,894 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:39,896 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:39,897 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 28 treesize of output 37 [2018-10-26 23:56:39,897 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,050 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 47 [2018-10-26 23:56:40,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:56:40,057 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,083 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 62 [2018-10-26 23:56:40,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-10-26 23:56:40,190 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,221 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,292 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,292 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:105, output treesize:72 [2018-10-26 23:56:40,389 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 52 [2018-10-26 23:56:40,397 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 13 treesize of output 16 [2018-10-26 23:56:40,410 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:40,415 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 23 [2018-10-26 23:56:40,415 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,433 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,467 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,560 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:40,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 81 [2018-10-26 23:56:40,584 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 28 treesize of output 27 [2018-10-26 23:56:40,596 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:40,598 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2018-10-26 23:56:40,598 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,615 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,646 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,718 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:40,718 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 5 variables, input treesize:101, output treesize:134 [2018-10-26 23:56:41,051 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:41,052 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:41,054 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:41,055 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:56:41,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 135 [2018-10-26 23:56:41,072 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 53 [2018-10-26 23:56:41,072 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,095 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2018-10-26 23:56:41,095 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,108 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:56:41,109 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,117 INFO L267 ElimStorePlain]: Start of recursive call 2: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,152 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:41,154 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:56:41,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 67 [2018-10-26 23:56:41,177 INFO L477 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2018-10-26 23:56:41,177 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,193 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2018-10-26 23:56:41,194 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,215 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-10-26 23:56:41,215 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,217 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,221 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:56:41,222 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 3 variables, input treesize:175, output treesize:7 [2018-10-26 23:56:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:56:41,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 23:57:02,159 WARN L179 SmtUtils]: Spent 4.92 s on a formula simplification that was a NOOP. DAG size: 70 [2018-10-26 23:57:30,077 WARN L179 SmtUtils]: Spent 4.78 s on a formula simplification that was a NOOP. DAG size: 82 [2018-10-26 23:58:07,504 WARN L179 SmtUtils]: Spent 6.40 s on a formula simplification that was a NOOP. DAG size: 101 [2018-10-26 23:58:07,555 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 448 treesize of output 393 [2018-10-26 23:58:07,878 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-26 23:58:07,892 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:58:07,892 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:08,087 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:08,169 INFO L303 Elim1Store]: Index analysis took 137 ms [2018-10-26 23:58:08,343 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 343 treesize of output 353 [2018-10-26 23:58:08,355 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:08,364 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 338 treesize of output 344 [2018-10-26 23:58:08,378 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:08,399 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-10-26 23:58:08,399 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:08,490 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:08,854 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 336 treesize of output 339 [2018-10-26 23:58:08,890 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-10-26 23:58:08,890 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:08,985 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:09,388 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:09,462 INFO L303 Elim1Store]: Index analysis took 122 ms [2018-10-26 23:58:09,634 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 340 treesize of output 353 [2018-10-26 23:58:11,862 WARN L179 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 125 DAG size of output: 120 [2018-10-26 23:58:11,875 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 330 [2018-10-26 23:58:11,876 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:11,878 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:58:11,878 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:11,894 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 619 treesize of output 618 [2018-10-26 23:58:11,894 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:12,416 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:12,423 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 324 [2018-10-26 23:58:12,424 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:12,772 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:12,773 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:12,774 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:12,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 320 treesize of output 321 [2018-10-26 23:58:12,815 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-10-26 23:58:12,815 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:12,892 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 289 treesize of output 293 [2018-10-26 23:58:12,945 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 290 treesize of output 281 [2018-10-26 23:58:12,945 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:12,958 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:13,009 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:13,010 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:13,046 INFO L267 ElimStorePlain]: Start of recursive call 14: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:13,351 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:13,442 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 323 [2018-10-26 23:58:13,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 297 [2018-10-26 23:58:13,466 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:13,657 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 288 [2018-10-26 23:58:13,658 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:13,942 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 311 treesize of output 307 [2018-10-26 23:58:13,943 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-10-26 23:58:14,170 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 289 [2018-10-26 23:58:14,171 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:14,324 INFO L267 ElimStorePlain]: Start of recursive call 19: 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:14,441 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:14,690 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:14,726 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 325 [2018-10-26 23:58:15,006 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-10-26 23:58:15,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:58:15,023 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:15,151 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:15,161 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 305 [2018-10-26 23:58:15,227 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 290 [2018-10-26 23:58:15,228 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 2 xjuncts. [2018-10-26 23:58:15,386 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:15,386 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:15,490 INFO L267 ElimStorePlain]: Start of recursive call 26: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:15,572 INFO L267 ElimStorePlain]: Start of recursive call 24: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:15,658 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:15,728 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:16,994 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 309 treesize of output 190 [2018-10-26 23:58:17,177 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2018-10-26 23:58:17,186 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:58:17,186 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:17,275 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:17,412 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 118 treesize of output 106 [2018-10-26 23:58:17,424 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 92 treesize of output 95 [2018-10-26 23:58:17,443 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-10-26 23:58:17,443 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:17,495 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:17,688 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:17,690 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 88 treesize of output 94 [2018-10-26 23:58:17,699 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:17,700 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:17,705 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2018-10-26 23:58:17,705 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:17,743 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:17,895 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:17,908 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:17,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 90 [2018-10-26 23:58:18,826 WARN L179 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2018-10-26 23:58:18,829 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:58:18,829 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:18,836 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:18,837 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:18,838 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 60 [2018-10-26 23:58:18,839 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:18,848 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:18,849 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:18,850 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 74 [2018-10-26 23:58:18,850 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:18,853 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:58:18,853 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:18,855 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:58:18,855 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:18,864 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:18,865 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:18,866 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 88 [2018-10-26 23:58:18,866 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:18,875 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:18,876 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:18,877 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 74 [2018-10-26 23:58:18,878 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,136 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2018-10-26 23:58:19,136 INFO L267 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,265 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,266 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,267 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,285 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 52 [2018-10-26 23:58:19,291 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:19,291 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,292 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 20 treesize of output 24 [2018-10-26 23:58:19,327 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 14 treesize of output 10 [2018-10-26 23:58:19,327 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,342 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,373 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2018-10-26 23:58:19,373 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,383 INFO L267 ElimStorePlain]: Start of recursive call 45: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,437 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,441 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2018-10-26 23:58:19,450 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 6 [2018-10-26 23:58:19,450 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,471 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:19,471 INFO L267 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,484 INFO L267 ElimStorePlain]: Start of recursive call 49: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,527 INFO L267 ElimStorePlain]: Start of recursive call 36: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:19,694 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 70 [2018-10-26 23:58:19,845 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2018-10-26 23:58:19,851 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:58:19,852 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,895 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,903 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 33 [2018-10-26 23:58:19,909 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:19,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 20 treesize of output 7 [2018-10-26 23:58:19,916 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,936 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:19,936 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,940 INFO L267 ElimStorePlain]: Start of recursive call 54: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,951 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:19,994 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:58:20,059 INFO L267 ElimStorePlain]: Start of recursive call 29: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-10-26 23:58:20,603 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 448 treesize of output 393 [2018-10-26 23:58:20,972 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2018-10-26 23:58:20,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-10-26 23:58:20,985 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:21,187 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:21,291 INFO L303 Elim1Store]: Index analysis took 155 ms [2018-10-26 23:58:21,511 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 343 treesize of output 353 [2018-10-26 23:58:21,644 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 2 case distinctions, treesize of input 338 treesize of output 341 [2018-10-26 23:58:21,688 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2018-10-26 23:58:21,688 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 2 xjuncts. [2018-10-26 23:58:21,839 INFO L267 ElimStorePlain]: Start of recursive call 60: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:22,641 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 336 treesize of output 339 [2018-10-26 23:58:22,666 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2018-10-26 23:58:22,667 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:22,767 INFO L267 ElimStorePlain]: Start of recursive call 62: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:23,479 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:23,536 INFO L303 Elim1Store]: Index analysis took 103 ms [2018-10-26 23:58:23,660 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 340 treesize of output 353 [2018-10-26 23:58:26,761 WARN L179 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 120 DAG size of output: 120 [2018-10-26 23:58:26,775 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:26,785 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 328 [2018-10-26 23:58:26,786 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:26,808 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:26,824 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 615 treesize of output 616 [2018-10-26 23:58:26,824 INFO L267 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:26,827 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:58:26,827 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:27,495 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 324 [2018-10-26 23:58:27,495 INFO L267 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:27,870 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:27,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 317 [2018-10-26 23:58:27,909 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:27,909 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:28,009 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:28,009 INFO L267 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:28,088 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 281 [2018-10-26 23:58:28,089 INFO L267 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:28,133 INFO L267 ElimStorePlain]: Start of recursive call 69: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:28,482 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:28,549 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 323 [2018-10-26 23:58:28,564 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 297 [2018-10-26 23:58:28,565 INFO L267 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:28,737 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 288 [2018-10-26 23:58:28,737 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:28,936 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 311 treesize of output 307 [2018-10-26 23:58:28,937 INFO L267 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 2 xjuncts. [2018-10-26 23:58:29,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 289 [2018-10-26 23:58:29,128 INFO L267 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:29,248 INFO L267 ElimStorePlain]: Start of recursive call 73: 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:29,479 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:29,492 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 311 [2018-10-26 23:58:29,502 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-10-26 23:58:29,502 INFO L267 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:29,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 281 [2018-10-26 23:58:29,614 INFO L267 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:29,658 INFO L267 ElimStorePlain]: Start of recursive call 78: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:29,788 INFO L267 ElimStorePlain]: Start of recursive call 64: 2 dim-1 vars, 3 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:30,319 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:30,409 INFO L303 Elim1Store]: Index analysis took 139 ms [2018-10-26 23:58:30,711 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 335 treesize of output 346 [2018-10-26 23:58:32,314 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 116 [2018-10-26 23:58:32,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 614 treesize of output 613 [2018-10-26 23:58:32,339 INFO L267 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:32,344 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-10-26 23:58:32,344 INFO L267 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:32,358 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 326 treesize of output 325 [2018-10-26 23:58:32,358 INFO L267 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:33,413 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:33,493 INFO L303 Elim1Store]: Index analysis took 112 ms [2018-10-26 23:58:33,582 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 317 treesize of output 323 [2018-10-26 23:58:33,679 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2018-10-26 23:58:33,680 INFO L267 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 2 xjuncts. [2018-10-26 23:58:33,883 INFO L267 ElimStorePlain]: Start of recursive call 85: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:34,503 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:34,518 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 315 [2018-10-26 23:58:34,606 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 302 treesize of output 290 [2018-10-26 23:58:34,607 INFO L267 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 2 xjuncts. [2018-10-26 23:58:34,788 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:34,789 INFO L267 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:34,919 INFO L267 ElimStorePlain]: Start of recursive call 87: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 23:58:34,929 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:34,943 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 318 treesize of output 313 [2018-10-26 23:58:34,954 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-10-26 23:58:34,954 INFO L267 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:35,067 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 281 [2018-10-26 23:58:35,067 INFO L267 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:35,119 INFO L267 ElimStorePlain]: Start of recursive call 90: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:35,534 INFO L682 Elim1Store]: detected equality via solver [2018-10-26 23:58:35,691 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 316 treesize of output 325 [2018-10-26 23:58:35,752 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 2 case distinctions, treesize of input 311 treesize of output 314 [2018-10-26 23:58:35,870 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-26 23:58:35,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 281 [2018-10-26 23:58:35,901 INFO L267 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:35,955 INFO L267 ElimStorePlain]: Start of recursive call 94: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 23:58:36,386 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 288 [2018-10-26 23:58:36,386 INFO L267 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2018-10-26 23:58:36,913 INFO L700 Elim1Store]: detected not equals via solver [2018-10-26 23:58:36,914 INFO L303 Elim1Store]: Index analysis took 110 ms [2018-10-26 23:58:37,269 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-26 23:58:37,270 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: v_arrayElimCell_260 term size 47 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:225) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-26 23:58:37,273 INFO L168 Benchmark]: Toolchain (without parser) took 298997.02 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 246.4 MB). Free memory was 951.9 MB in the beginning and 1.0 GB in the end (delta: -65.7 MB). Peak memory consumption was 438.1 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:37,273 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 23:58:37,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.44 ms. Allocated memory is still 1.0 GB. Free memory was 946.5 MB in the beginning and 925.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:37,274 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.79 ms. Allocated memory is still 1.0 GB. Free memory was 925.0 MB in the beginning and 919.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:37,274 INFO L168 Benchmark]: Boogie Preprocessor took 153.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 919.7 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:37,274 INFO L168 Benchmark]: RCFGBuilder took 1562.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:37,274 INFO L168 Benchmark]: TraceAbstraction took 296514.85 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 129.0 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24.0 MB). Peak memory consumption was 410.4 MB. Max. memory is 11.5 GB. [2018-10-26 23:58:37,276 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 660.44 ms. Allocated memory is still 1.0 GB. Free memory was 946.5 MB in the beginning and 925.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 100.79 ms. Allocated memory is still 1.0 GB. Free memory was 925.0 MB in the beginning and 919.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 153.36 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 919.7 MB in the beginning and 1.1 GB in the end (delta: -181.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1562.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 296514.85 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 129.0 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 24.0 MB). Peak memory consumption was 410.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimCell_260 term size 47 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimCell_260 term size 47: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...