./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63ea7ed840682b4e196bd141458679e7836ad115 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i -s /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63ea7ed840682b4e196bd141458679e7836ad115 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_77 input size 67 context size 67 output size 67 --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 17:36:33,042 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 17:36:33,043 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 17:36:33,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 17:36:33,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 17:36:33,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 17:36:33,052 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 17:36:33,053 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 17:36:33,055 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 17:36:33,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 17:36:33,056 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 17:36:33,056 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 17:36:33,056 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 17:36:33,057 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 17:36:33,058 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 17:36:33,058 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 17:36:33,059 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 17:36:33,060 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 17:36:33,061 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 17:36:33,062 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 17:36:33,062 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 17:36:33,063 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 17:36:33,064 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 17:36:33,064 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 17:36:33,064 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 17:36:33,064 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 17:36:33,065 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 17:36:33,065 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 17:36:33,066 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 17:36:33,066 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 17:36:33,067 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 17:36:33,067 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 17:36:33,067 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 17:36:33,067 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 17:36:33,068 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 17:36:33,068 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 17:36:33,069 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 17:36:33,079 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 17:36:33,079 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 17:36:33,079 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 17:36:33,080 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 17:36:33,080 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 17:36:33,080 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 17:36:33,080 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 17:36:33,081 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 17:36:33,081 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 17:36:33,081 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 17:36:33,081 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 17:36:33,081 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 17:36:33,081 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 17:36:33,081 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 17:36:33,082 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 17:36:33,082 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 17:36:33,082 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 17:36:33,082 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 17:36:33,082 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 17:36:33,082 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 17:36:33,083 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 17:36:33,083 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 17:36:33,083 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 17:36:33,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 17:36:33,083 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 17:36:33,083 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 17:36:33,083 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 17:36:33,084 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 17:36:33,084 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 17:36:33,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 17:36:33,084 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_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer 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 -> Automizer 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 -> 63ea7ed840682b4e196bd141458679e7836ad115 [2018-12-02 17:36:33,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 17:36:33,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 17:36:33,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 17:36:33,117 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 17:36:33,118 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 17:36:33,118 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/../../sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i [2018-12-02 17:36:33,155 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/507631f01/ecd0e4f47ef24ff88c6b52d0e5e76b3d/FLAGeffc6947b [2018-12-02 17:36:33,468 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 17:36:33,468 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i [2018-12-02 17:36:33,474 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/507631f01/ecd0e4f47ef24ff88c6b52d0e5e76b3d/FLAGeffc6947b [2018-12-02 17:36:33,483 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/507631f01/ecd0e4f47ef24ff88c6b52d0e5e76b3d [2018-12-02 17:36:33,485 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 17:36:33,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 17:36:33,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 17:36:33,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 17:36:33,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 17:36:33,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b2bf10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33, skipping insertion in model container [2018-12-02 17:36:33,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 17:36:33,514 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 17:36:33,662 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 17:36:33,667 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 17:36:33,732 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 17:36:33,753 INFO L195 MainTranslator]: Completed translation [2018-12-02 17:36:33,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33 WrapperNode [2018-12-02 17:36:33,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 17:36:33,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 17:36:33,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 17:36:33,754 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 17:36:33,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 17:36:33,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 17:36:33,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 17:36:33,771 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 17:36:33,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... [2018-12-02 17:36:33,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 17:36:33,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 17:36:33,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 17:36:33,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 17:36:33,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:36:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 17:36:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2018-12-02 17:36:33,820 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2018-12-02 17:36:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 17:36:33,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 17:36:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 17:36:33,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure re_insert [2018-12-02 17:36:33,821 INFO L138 BoogieDeclarations]: Found implementation of procedure re_insert [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 17:36:33,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2018-12-02 17:36:33,821 INFO L138 BoogieDeclarations]: Found implementation of procedure remove [2018-12-02 17:36:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 17:36:33,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 17:36:33,991 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 17:36:33,991 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 17:36:33,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:36:33 BoogieIcfgContainer [2018-12-02 17:36:33,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 17:36:33,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 17:36:33,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 17:36:33,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 17:36:33,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:36:33" (1/3) ... [2018-12-02 17:36:33,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435e5e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:36:33, skipping insertion in model container [2018-12-02 17:36:33,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:36:33" (2/3) ... [2018-12-02 17:36:33,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435e5e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:36:33, skipping insertion in model container [2018-12-02 17:36:33,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:36:33" (3/3) ... [2018-12-02 17:36:33,995 INFO L112 eAbstractionObserver]: Analyzing ICFG dancing_true-unreach-call_false-valid-memtrack.i [2018-12-02 17:36:34,001 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 17:36:34,005 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 17:36:34,014 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 17:36:34,030 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 17:36:34,031 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 17:36:34,031 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 17:36:34,031 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 17:36:34,031 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 17:36:34,031 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 17:36:34,031 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 17:36:34,031 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 17:36:34,031 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 17:36:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-12-02 17:36:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 17:36:34,045 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:34,046 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:36:34,047 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:34,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:34,050 INFO L82 PathProgramCache]: Analyzing trace with hash -633334339, now seen corresponding path program 1 times [2018-12-02 17:36:34,051 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:34,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:34,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:36:34,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:34,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 17:36:34,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 17:36:34,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 17:36:34,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 17:36:34,147 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2018-12-02 17:36:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:34,162 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2018-12-02 17:36:34,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 17:36:34,163 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-02 17:36:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:34,169 INFO L225 Difference]: With dead ends: 93 [2018-12-02 17:36:34,169 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 17:36:34,171 INFO L631 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 [2018-12-02 17:36:34,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 17:36:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-12-02 17:36:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 17:36:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2018-12-02 17:36:34,199 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 26 [2018-12-02 17:36:34,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:34,200 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2018-12-02 17:36:34,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 17:36:34,200 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2018-12-02 17:36:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 17:36:34,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:34,202 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:36:34,202 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:34,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1204061740, now seen corresponding path program 1 times [2018-12-02 17:36:34,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:34,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:34,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:36:34,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:34,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 17:36:34,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 17:36:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 17:36:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 17:36:34,278 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 5 states. [2018-12-02 17:36:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:34,316 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-12-02 17:36:34,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 17:36:34,317 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-12-02 17:36:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:34,318 INFO L225 Difference]: With dead ends: 54 [2018-12-02 17:36:34,318 INFO L226 Difference]: Without dead ends: 52 [2018-12-02 17:36:34,318 INFO L631 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 [2018-12-02 17:36:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-02 17:36:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-12-02 17:36:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-12-02 17:36:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2018-12-02 17:36:34,326 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 26 [2018-12-02 17:36:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:34,327 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2018-12-02 17:36:34,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 17:36:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2018-12-02 17:36:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 17:36:34,328 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:34,328 INFO L402 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] [2018-12-02 17:36:34,328 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:34,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:34,329 INFO L82 PathProgramCache]: Analyzing trace with hash -263608208, now seen corresponding path program 1 times [2018-12-02 17:36:34,329 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:34,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:34,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 17:36:34,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:34,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 17:36:34,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 17:36:34,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 17:36:34,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 17:36:34,365 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 4 states. [2018-12-02 17:36:34,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:34,389 INFO L93 Difference]: Finished difference Result 91 states and 119 transitions. [2018-12-02 17:36:34,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 17:36:34,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-02 17:36:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:34,390 INFO L225 Difference]: With dead ends: 91 [2018-12-02 17:36:34,390 INFO L226 Difference]: Without dead ends: 65 [2018-12-02 17:36:34,391 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 17:36:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-02 17:36:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2018-12-02 17:36:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-02 17:36:34,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2018-12-02 17:36:34,396 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 32 [2018-12-02 17:36:34,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:34,396 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2018-12-02 17:36:34,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 17:36:34,396 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2018-12-02 17:36:34,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 17:36:34,397 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:34,397 INFO L402 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] [2018-12-02 17:36:34,397 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:34,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:34,397 INFO L82 PathProgramCache]: Analyzing trace with hash 351866420, now seen corresponding path program 1 times [2018-12-02 17:36:34,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:34,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:34,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 17:36:34,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:36:34,457 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:36:34,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:36:34,517 INFO L478 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 [2018-12-02 17:36:34,519 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,521 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,521 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 17:36:34,528 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:34,529 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:34,530 INFO L478 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 [2018-12-02 17:36:34,530 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,531 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,532 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2018-12-02 17:36:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:36:34,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:36:34,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-02 17:36:34,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 17:36:34,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 17:36:34,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 17:36:34,589 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand 7 states. [2018-12-02 17:36:34,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:34,735 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2018-12-02 17:36:34,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 17:36:34,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-12-02 17:36:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:34,738 INFO L225 Difference]: With dead ends: 118 [2018-12-02 17:36:34,738 INFO L226 Difference]: Without dead ends: 77 [2018-12-02 17:36:34,738 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-12-02 17:36:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-02 17:36:34,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2018-12-02 17:36:34,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-02 17:36:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2018-12-02 17:36:34,746 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 35 [2018-12-02 17:36:34,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:34,746 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2018-12-02 17:36:34,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 17:36:34,746 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2018-12-02 17:36:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 17:36:34,747 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:34,747 INFO L402 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] [2018-12-02 17:36:34,747 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:34,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:34,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1604870462, now seen corresponding path program 1 times [2018-12-02 17:36:34,748 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:34,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:34,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 17:36:34,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:36:34,783 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:36:34,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:34,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:36:34,904 INFO L478 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 31 treesize of output 31 [2018-12-02 17:36:34,907 INFO L478 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 [2018-12-02 17:36:34,910 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:34,912 INFO L478 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 [2018-12-02 17:36:34,912 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,919 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,934 INFO L478 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 30 treesize of output 31 [2018-12-02 17:36:34,937 INFO L478 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 [2018-12-02 17:36:34,937 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,945 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,953 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,956 INFO L478 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 38 treesize of output 36 [2018-12-02 17:36:34,959 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:36:34,962 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:34,963 INFO L478 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 32 treesize of output 36 [2018-12-02 17:36:34,964 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,970 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:34,982 INFO L478 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 30 treesize of output 23 [2018-12-02 17:36:34,984 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:34,993 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 43 [2018-12-02 17:36:34,994 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-02 17:36:35,010 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:36:35,029 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:36:35,078 INFO L478 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 38 treesize of output 36 [2018-12-02 17:36:35,082 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:36:35,086 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:35,087 INFO L478 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 32 treesize of output 36 [2018-12-02 17:36:35,088 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,094 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,103 INFO L478 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 30 treesize of output 23 [2018-12-02 17:36:35,105 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:35,113 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 41 [2018-12-02 17:36:35,114 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-12-02 17:36:35,127 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:36:35,139 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:36:35,144 INFO L478 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 31 treesize of output 31 [2018-12-02 17:36:35,146 INFO L478 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 [2018-12-02 17:36:35,149 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:35,150 INFO L478 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 [2018-12-02 17:36:35,150 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,154 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,164 INFO L478 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 30 treesize of output 31 [2018-12-02 17:36:35,166 INFO L478 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 [2018-12-02 17:36:35,167 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,171 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,176 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,210 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-12-02 17:36:35,210 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 3 variables, input treesize:85, output treesize:287 [2018-12-02 17:36:35,325 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2018-12-02 17:36:35,497 INFO L478 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 66 treesize of output 56 [2018-12-02 17:36:35,500 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:35,500 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:36:35,501 INFO L478 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 19 [2018-12-02 17:36:35,501 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,509 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,525 INFO L478 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 24 [2018-12-02 17:36:35,527 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:35,527 INFO L478 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 21 treesize of output 11 [2018-12-02 17:36:35,528 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,530 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,537 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:35,537 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:119, output treesize:14 [2018-12-02 17:36:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:36:35,578 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:36:35,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 12] total 14 [2018-12-02 17:36:35,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 17:36:35,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 17:36:35,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2018-12-02 17:36:35,579 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand 14 states. [2018-12-02 17:36:37,926 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2018-12-02 17:36:40,687 WARN L180 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2018-12-02 17:36:56,395 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-12-02 17:36:56,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:56,800 INFO L93 Difference]: Finished difference Result 262 states and 408 transitions. [2018-12-02 17:36:56,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-02 17:36:56,800 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2018-12-02 17:36:56,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:56,802 INFO L225 Difference]: With dead ends: 262 [2018-12-02 17:36:56,802 INFO L226 Difference]: Without dead ends: 205 [2018-12-02 17:36:56,803 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=306, Invalid=1586, Unknown=0, NotChecked=0, Total=1892 [2018-12-02 17:36:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-12-02 17:36:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 136. [2018-12-02 17:36:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-12-02 17:36:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 198 transitions. [2018-12-02 17:36:56,827 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 198 transitions. Word has length 37 [2018-12-02 17:36:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:56,827 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 198 transitions. [2018-12-02 17:36:56,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 17:36:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 198 transitions. [2018-12-02 17:36:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-02 17:36:56,829 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:56,829 INFO L402 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] [2018-12-02 17:36:56,829 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:56,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:56,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1058687156, now seen corresponding path program 1 times [2018-12-02 17:36:56,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:56,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:56,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:56,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:56,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 17:36:57,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:57,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-02 17:36:57,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-02 17:36:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-02 17:36:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-12-02 17:36:57,007 INFO L87 Difference]: Start difference. First operand 136 states and 198 transitions. Second operand 10 states. [2018-12-02 17:36:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:57,301 INFO L93 Difference]: Finished difference Result 183 states and 261 transitions. [2018-12-02 17:36:57,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 17:36:57,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2018-12-02 17:36:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:57,302 INFO L225 Difference]: With dead ends: 183 [2018-12-02 17:36:57,303 INFO L226 Difference]: Without dead ends: 145 [2018-12-02 17:36:57,303 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-12-02 17:36:57,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-12-02 17:36:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 138. [2018-12-02 17:36:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-12-02 17:36:57,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 201 transitions. [2018-12-02 17:36:57,328 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 201 transitions. Word has length 44 [2018-12-02 17:36:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:57,329 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 201 transitions. [2018-12-02 17:36:57,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-02 17:36:57,329 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 201 transitions. [2018-12-02 17:36:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-02 17:36:57,331 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:57,331 INFO L402 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] [2018-12-02 17:36:57,331 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:57,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1313052106, now seen corresponding path program 1 times [2018-12-02 17:36:57,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:57,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:57,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:57,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 17:36:57,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:57,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 17:36:57,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 17:36:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 17:36:57,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 17:36:57,392 INFO L87 Difference]: Start difference. First operand 138 states and 201 transitions. Second operand 6 states. [2018-12-02 17:36:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:57,422 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2018-12-02 17:36:57,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 17:36:57,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-12-02 17:36:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:57,424 INFO L225 Difference]: With dead ends: 150 [2018-12-02 17:36:57,424 INFO L226 Difference]: Without dead ends: 138 [2018-12-02 17:36:57,425 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-02 17:36:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-12-02 17:36:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 128. [2018-12-02 17:36:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-12-02 17:36:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 179 transitions. [2018-12-02 17:36:57,446 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 179 transitions. Word has length 44 [2018-12-02 17:36:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:57,446 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 179 transitions. [2018-12-02 17:36:57,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 17:36:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 179 transitions. [2018-12-02 17:36:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-02 17:36:57,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:57,448 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-12-02 17:36:57,448 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:57,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1157512413, now seen corresponding path program 1 times [2018-12-02 17:36:57,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:57,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:57,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:57,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-12-02 17:36:57,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:57,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 17:36:57,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 17:36:57,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 17:36:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 17:36:57,499 INFO L87 Difference]: Start difference. First operand 128 states and 179 transitions. Second operand 7 states. [2018-12-02 17:36:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:57,544 INFO L93 Difference]: Finished difference Result 146 states and 198 transitions. [2018-12-02 17:36:57,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 17:36:57,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2018-12-02 17:36:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:57,546 INFO L225 Difference]: With dead ends: 146 [2018-12-02 17:36:57,546 INFO L226 Difference]: Without dead ends: 144 [2018-12-02 17:36:57,546 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-02 17:36:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-12-02 17:36:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2018-12-02 17:36:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-12-02 17:36:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 181 transitions. [2018-12-02 17:36:57,558 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 181 transitions. Word has length 46 [2018-12-02 17:36:57,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:57,558 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 181 transitions. [2018-12-02 17:36:57,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 17:36:57,558 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 181 transitions. [2018-12-02 17:36:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 17:36:57,559 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:57,559 INFO L402 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] [2018-12-02 17:36:57,559 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:57,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:57,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1898264822, now seen corresponding path program 1 times [2018-12-02 17:36:57,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:57,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:57,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:57,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 17:36:57,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:36:57,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 17:36:57,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 17:36:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 17:36:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 17:36:57,593 INFO L87 Difference]: Start difference. First operand 130 states and 181 transitions. Second operand 5 states. [2018-12-02 17:36:57,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:36:57,658 INFO L93 Difference]: Finished difference Result 234 states and 314 transitions. [2018-12-02 17:36:57,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 17:36:57,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-12-02 17:36:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:36:57,659 INFO L225 Difference]: With dead ends: 234 [2018-12-02 17:36:57,659 INFO L226 Difference]: Without dead ends: 116 [2018-12-02 17:36:57,660 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 17:36:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-12-02 17:36:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2018-12-02 17:36:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-12-02 17:36:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 147 transitions. [2018-12-02 17:36:57,677 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 147 transitions. Word has length 45 [2018-12-02 17:36:57,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:36:57,677 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 147 transitions. [2018-12-02 17:36:57,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 17:36:57,677 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 147 transitions. [2018-12-02 17:36:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-02 17:36:57,678 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:36:57,678 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-12-02 17:36:57,678 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:36:57,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:36:57,678 INFO L82 PathProgramCache]: Analyzing trace with hash -339958140, now seen corresponding path program 1 times [2018-12-02 17:36:57,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:36:57,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:36:57,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:57,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:36:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-02 17:36:57,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:36:57,796 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:36:57,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:36:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:36:57,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:36:57,859 INFO L478 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 31 treesize of output 31 [2018-12-02 17:36:57,861 INFO L478 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 [2018-12-02 17:36:57,862 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:57,863 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:57,863 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 31 [2018-12-02 17:36:57,864 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,870 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,878 INFO L478 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 30 treesize of output 31 [2018-12-02 17:36:57,879 INFO L478 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 [2018-12-02 17:36:57,880 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,884 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,891 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,893 INFO L478 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 38 treesize of output 36 [2018-12-02 17:36:57,895 INFO L478 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 33 treesize of output 32 [2018-12-02 17:36:57,897 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:57,898 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:57,899 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 44 [2018-12-02 17:36:57,899 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,910 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:57,916 INFO L478 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 30 treesize of output 23 [2018-12-02 17:36:57,918 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:57,920 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:36:57,925 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 47 [2018-12-02 17:36:57,925 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-02 17:36:57,938 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:36:57,953 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:36:57,972 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-02 17:36:57,972 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 2 variables, input treesize:50, output treesize:106 [2018-12-02 17:36:58,172 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 17:36:58,173 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:36:58,175 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:36:58,175 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:81, output treesize:1 [2018-12-02 17:36:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-02 17:36:58,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:36:58,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2018-12-02 17:36:58,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-02 17:36:58,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-02 17:36:58,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2018-12-02 17:36:58,196 INFO L87 Difference]: Start difference. First operand 112 states and 147 transitions. Second operand 20 states. [2018-12-02 17:37:03,035 WARN L180 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-02 17:37:04,328 WARN L180 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 43 [2018-12-02 17:37:04,697 WARN L180 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-12-02 17:37:05,433 WARN L180 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-12-02 17:37:22,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:37:22,008 INFO L93 Difference]: Finished difference Result 201 states and 277 transitions. [2018-12-02 17:37:22,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-02 17:37:22,009 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 49 [2018-12-02 17:37:22,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:37:22,009 INFO L225 Difference]: With dead ends: 201 [2018-12-02 17:37:22,009 INFO L226 Difference]: Without dead ends: 142 [2018-12-02 17:37:22,010 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 17:37:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-12-02 17:37:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 118. [2018-12-02 17:37:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-12-02 17:37:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 158 transitions. [2018-12-02 17:37:22,022 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 158 transitions. Word has length 49 [2018-12-02 17:37:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:37:22,023 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 158 transitions. [2018-12-02 17:37:22,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-02 17:37:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 158 transitions. [2018-12-02 17:37:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-12-02 17:37:22,023 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:37:22,023 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2018-12-02 17:37:22,023 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:37:22,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:22,024 INFO L82 PathProgramCache]: Analyzing trace with hash -970274759, now seen corresponding path program 1 times [2018-12-02 17:37:22,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:22,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:22,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:22,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:22,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-12-02 17:37:22,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:37:22,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:37:22,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:22,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:37:22,372 INFO L478 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 34 treesize of output 32 [2018-12-02 17:37:22,373 INFO L478 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 29 treesize of output 28 [2018-12-02 17:37:22,375 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:22,375 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 36 [2018-12-02 17:37:22,376 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,380 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,386 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:22,386 INFO L478 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 28 treesize of output 29 [2018-12-02 17:37:22,388 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:37:22,389 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 32 [2018-12-02 17:37:22,389 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,393 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,396 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,400 INFO L478 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 29 treesize of output 29 [2018-12-02 17:37:22,402 INFO L478 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 11 treesize of output 14 [2018-12-02 17:37:22,404 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:22,404 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-12-02 17:37:22,405 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,408 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,416 INFO L478 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 28 treesize of output 29 [2018-12-02 17:37:22,418 INFO L478 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 [2018-12-02 17:37:22,418 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,422 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,426 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:22,439 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:37:22,440 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 2 variables, input treesize:46, output treesize:65 [2018-12-02 17:37:27,307 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-12-02 17:37:27,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:37:27,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 35 [2018-12-02 17:37:27,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-02 17:37:27,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-02 17:37:27,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1081, Unknown=2, NotChecked=0, Total=1190 [2018-12-02 17:37:27,322 INFO L87 Difference]: Start difference. First operand 118 states and 158 transitions. Second operand 35 states. [2018-12-02 17:37:39,980 WARN L180 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 29 [2018-12-02 17:37:40,621 WARN L180 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-12-02 17:37:41,254 WARN L180 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-12-02 17:37:43,815 WARN L180 SmtUtils]: Spent 2.21 s on a formula simplification that was a NOOP. DAG size: 35 [2018-12-02 17:37:52,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:37:52,448 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2018-12-02 17:37:52,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-02 17:37:52,448 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 62 [2018-12-02 17:37:52,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:37:52,449 INFO L225 Difference]: With dead ends: 163 [2018-12-02 17:37:52,449 INFO L226 Difference]: Without dead ends: 102 [2018-12-02 17:37:52,450 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=279, Invalid=2167, Unknown=4, NotChecked=0, Total=2450 [2018-12-02 17:37:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-12-02 17:37:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 79. [2018-12-02 17:37:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-12-02 17:37:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2018-12-02 17:37:52,460 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 62 [2018-12-02 17:37:52,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:37:52,460 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2018-12-02 17:37:52,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-02 17:37:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2018-12-02 17:37:52,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-02 17:37:52,461 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:37:52,461 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2018-12-02 17:37:52,461 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:37:52,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:37:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -49888186, now seen corresponding path program 1 times [2018-12-02 17:37:52,462 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:37:52,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:37:52,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:52,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:52,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:37:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-02 17:37:52,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:37:52,813 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:37:52,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:37:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:37:52,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:37:52,846 INFO L478 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 [2018-12-02 17:37:52,846 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:52,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:52,860 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-12-02 17:37:52,953 INFO L478 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 38 treesize of output 36 [2018-12-02 17:37:52,955 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:37:52,958 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:52,960 INFO L478 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 32 treesize of output 36 [2018-12-02 17:37:52,960 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:52,967 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:52,978 INFO L478 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 30 treesize of output 23 [2018-12-02 17:37:52,981 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:52,988 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 41 [2018-12-02 17:37:52,989 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-12-02 17:37:53,003 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:37:53,023 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:37:53,032 INFO L478 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 31 treesize of output 31 [2018-12-02 17:37:53,034 INFO L478 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 [2018-12-02 17:37:53,037 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,040 INFO L478 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 [2018-12-02 17:37:53,040 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,050 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,070 INFO L478 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 30 treesize of output 34 [2018-12-02 17:37:53,072 INFO L478 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 [2018-12-02 17:37:53,072 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,080 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,087 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,138 INFO L478 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 38 treesize of output 36 [2018-12-02 17:37:53,140 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:37:53,142 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,144 INFO L478 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 32 treesize of output 36 [2018-12-02 17:37:53,144 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,150 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,158 INFO L478 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 30 treesize of output 23 [2018-12-02 17:37:53,161 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,168 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 43 [2018-12-02 17:37:53,169 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-12-02 17:37:53,183 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:37:53,197 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:37:53,205 INFO L478 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 31 treesize of output 31 [2018-12-02 17:37:53,207 INFO L478 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 [2018-12-02 17:37:53,210 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,212 INFO L478 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 [2018-12-02 17:37:53,212 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,217 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,228 INFO L478 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 30 treesize of output 34 [2018-12-02 17:37:53,230 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-02 17:37:53,231 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,236 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,242 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,272 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:37:53,272 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:93, output treesize:262 [2018-12-02 17:37:53,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,451 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,452 INFO L478 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 70 treesize of output 64 [2018-12-02 17:37:53,452 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,494 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,494 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,495 INFO L478 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 64 treesize of output 58 [2018-12-02 17:37:53,495 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,535 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,536 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:37:53,537 INFO L478 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 64 treesize of output 58 [2018-12-02 17:37:53,537 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:37:53,576 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:37:53,576 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:199, output treesize:181 [2018-12-02 17:38:01,905 WARN L180 SmtUtils]: Spent 8.26 s on a formula simplification. DAG size of input: 163 DAG size of output: 135 [2018-12-02 17:38:01,918 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 96 [2018-12-02 17:38:01,920 INFO L478 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 [2018-12-02 17:38:01,923 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:01,925 INFO L478 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 [2018-12-02 17:38:01,926 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:01,932 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:01,963 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:01,965 INFO L478 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 44 treesize of output 50 [2018-12-02 17:38:01,968 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:01,971 INFO L478 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 27 treesize of output 27 [2018-12-02 17:38:01,971 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:01,980 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:01,996 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:03,926 INFO L478 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 104 treesize of output 108 [2018-12-02 17:38:03,928 INFO L478 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 [2018-12-02 17:38:03,931 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:03,933 INFO L478 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 [2018-12-02 17:38:03,933 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:03,940 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:03,970 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:03,972 INFO L478 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 46 treesize of output 54 [2018-12-02 17:38:03,975 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:03,975 INFO L478 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 31 treesize of output 27 [2018-12-02 17:38:03,975 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:03,985 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:04,003 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,381 INFO L478 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 88 treesize of output 108 [2018-12-02 17:38:05,383 INFO L478 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 19 treesize of output 22 [2018-12-02 17:38:05,386 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,386 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,387 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 45 [2018-12-02 17:38:05,387 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,393 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,412 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,415 INFO L478 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 66 treesize of output 78 [2018-12-02 17:38:05,417 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,419 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 31 [2018-12-02 17:38:05,419 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,427 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,440 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,928 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 120 [2018-12-02 17:38:05,930 INFO L478 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 19 treesize of output 22 [2018-12-02 17:38:05,932 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,933 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:05,933 INFO L478 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 22 treesize of output 48 [2018-12-02 17:38:05,933 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,938 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,959 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,962 INFO L478 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 83 treesize of output 93 [2018-12-02 17:38:05,974 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:05,976 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2018-12-02 17:38:05,977 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:05,990 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,003 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,297 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 149 [2018-12-02 17:38:06,308 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 57 [2018-12-02 17:38:06,311 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,312 INFO L478 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 45 treesize of output 55 [2018-12-02 17:38:06,312 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,339 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,341 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,341 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,350 INFO L478 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 2 case distinctions, treesize of input 47 treesize of output 83 [2018-12-02 17:38:06,351 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 2 xjuncts. [2018-12-02 17:38:06,385 INFO L267 ElimStorePlain]: Start of recursive call 23: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:38:06,434 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:06,435 INFO L478 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 65 treesize of output 73 [2018-12-02 17:38:06,438 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,441 INFO L478 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 44 treesize of output 38 [2018-12-02 17:38:06,441 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,453 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,458 INFO L478 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 61 treesize of output 58 [2018-12-02 17:38:06,462 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,462 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:06,465 INFO L478 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 27 treesize of output 42 [2018-12-02 17:38:06,465 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,474 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,480 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,480 INFO L478 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 63 treesize of output 70 [2018-12-02 17:38:06,485 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,496 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 78 [2018-12-02 17:38:06,497 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 3 xjuncts. [2018-12-02 17:38:06,531 INFO L267 ElimStorePlain]: Start of recursive call 30: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:06,574 INFO L267 ElimStorePlain]: Start of recursive call 22: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:38:06,594 INFO L478 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 130 [2018-12-02 17:38:06,596 INFO L478 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 [2018-12-02 17:38:06,599 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,601 INFO L478 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 [2018-12-02 17:38:06,602 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,608 INFO L267 ElimStorePlain]: Start of recursive call 33: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,644 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,658 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 91 [2018-12-02 17:38:06,661 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 58 [2018-12-02 17:38:06,661 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:06,705 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,708 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:06,712 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:06,720 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 103 [2018-12-02 17:38:06,721 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 3 xjuncts. [2018-12-02 17:38:06,777 INFO L267 ElimStorePlain]: Start of recursive call 35: 2 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:38:06,831 INFO L267 ElimStorePlain]: Start of recursive call 32: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:38:07,251 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 128 [2018-12-02 17:38:07,254 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 20 [2018-12-02 17:38:07,257 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,259 INFO L478 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 20 treesize of output 27 [2018-12-02 17:38:07,259 INFO L267 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,265 INFO L267 ElimStorePlain]: Start of recursive call 39: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,301 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 91 [2018-12-02 17:38:07,305 INFO L478 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 30 treesize of output 17 [2018-12-02 17:38:07,305 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,317 INFO L267 ElimStorePlain]: Start of recursive call 41: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,339 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,352 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 131 [2018-12-02 17:38:07,371 INFO L478 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 60 treesize of output 65 [2018-12-02 17:38:07,379 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,381 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:07,384 INFO L478 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 1 case distinctions, treesize of input 55 treesize of output 76 [2018-12-02 17:38:07,385 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,425 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,427 INFO L478 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 53 treesize of output 71 [2018-12-02 17:38:07,427 INFO L267 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,456 INFO L267 ElimStorePlain]: Start of recursive call 44: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:07,506 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,507 INFO L478 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 87 treesize of output 95 [2018-12-02 17:38:07,511 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,513 INFO L478 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 53 treesize of output 51 [2018-12-02 17:38:07,514 INFO L267 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,525 INFO L267 ElimStorePlain]: Start of recursive call 47: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,532 INFO L478 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 89 treesize of output 79 [2018-12-02 17:38:07,537 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,562 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 92 [2018-12-02 17:38:07,563 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 6 xjuncts. [2018-12-02 17:38:07,610 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:38:07,666 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:38:07,683 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 159 [2018-12-02 17:38:07,686 INFO L478 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 21 treesize of output 24 [2018-12-02 17:38:07,689 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,690 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,691 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 39 [2018-12-02 17:38:07,691 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,700 INFO L267 ElimStorePlain]: Start of recursive call 52: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,744 INFO L478 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 117 treesize of output 83 [2018-12-02 17:38:07,748 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,752 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 106 [2018-12-02 17:38:07,753 INFO L267 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,768 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,793 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,809 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 143 [2018-12-02 17:38:07,812 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-12-02 17:38:07,815 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,816 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:07,816 INFO L478 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 24 treesize of output 38 [2018-12-02 17:38:07,816 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,823 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,848 INFO L478 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 103 treesize of output 75 [2018-12-02 17:38:07,851 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,854 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 113 [2018-12-02 17:38:07,854 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,865 INFO L267 ElimStorePlain]: Start of recursive call 59: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,880 INFO L267 ElimStorePlain]: Start of recursive call 56: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,889 INFO L478 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 137 [2018-12-02 17:38:07,893 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,894 INFO L478 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 60 treesize of output 69 [2018-12-02 17:38:07,897 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,898 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,898 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:07,901 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:07,902 INFO L478 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 59 treesize of output 96 [2018-12-02 17:38:07,902 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,914 INFO L267 ElimStorePlain]: Start of recursive call 62: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,942 INFO L478 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 102 treesize of output 98 [2018-12-02 17:38:07,944 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:07,947 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 51 [2018-12-02 17:38:07,947 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,956 INFO L267 ElimStorePlain]: Start of recursive call 64: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:07,969 INFO L267 ElimStorePlain]: Start of recursive call 61: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:08,130 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-2 vars, End of recursive call: 6 dim-0 vars, and 7 xjuncts. [2018-12-02 17:38:08,130 INFO L202 ElimStorePlain]: Needed 65 recursive calls to eliminate 12 variables, input treesize:411, output treesize:871 [2018-12-02 17:38:08,456 WARN L180 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 105 [2018-12-02 17:38:08,793 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 17:38:08,793 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:08,870 INFO L478 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 129 treesize of output 100 [2018-12-02 17:38:08,872 INFO L478 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 21 treesize of output 11 [2018-12-02 17:38:08,872 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:08,886 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:08,886 INFO L478 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 6 [2018-12-02 17:38:08,886 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:08,895 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:08,923 INFO L478 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 0 case distinctions, treesize of input 129 treesize of output 102 [2018-12-02 17:38:08,925 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 35 [2018-12-02 17:38:08,925 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 17:38:08,940 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:08,941 INFO L478 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 33 treesize of output 23 [2018-12-02 17:38:08,941 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:08,950 INFO L267 ElimStorePlain]: Start of recursive call 6: 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-12-02 17:38:09,011 INFO L478 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 50 treesize of output 46 [2018-12-02 17:38:09,013 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:09,013 INFO L478 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 6 [2018-12-02 17:38:09,013 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,022 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:09,023 INFO L478 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 6 [2018-12-02 17:38:09,023 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,028 INFO L267 ElimStorePlain]: Start of recursive call 9: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,044 INFO L478 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 59 treesize of output 54 [2018-12-02 17:38:09,045 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 15 [2018-12-02 17:38:09,045 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,053 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:09,054 INFO L478 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 6 [2018-12-02 17:38:09,054 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,058 INFO L267 ElimStorePlain]: Start of recursive call 12: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,067 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:09,067 INFO L202 ElimStorePlain]: Needed 14 recursive calls to eliminate 12 variables, input treesize:497, output treesize:10 [2018-12-02 17:38:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-02 17:38:09,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:38:09,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2018-12-02 17:38:09,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-02 17:38:09,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-02 17:38:09,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2018-12-02 17:38:09,146 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand 25 states. [2018-12-02 17:38:09,576 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 52 [2018-12-02 17:38:12,281 WARN L180 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 154 [2018-12-02 17:38:12,804 WARN L180 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 185 [2018-12-02 17:38:13,167 WARN L180 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 187 [2018-12-02 17:38:13,411 WARN L180 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 125 [2018-12-02 17:38:16,237 WARN L180 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2018-12-02 17:38:16,761 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-12-02 17:38:19,156 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 49 [2018-12-02 17:38:20,265 WARN L180 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 125 [2018-12-02 17:38:20,493 WARN L180 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 96 [2018-12-02 17:38:20,970 WARN L180 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 182 [2018-12-02 17:38:21,299 WARN L180 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 184 [2018-12-02 17:38:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:21,675 INFO L93 Difference]: Finished difference Result 178 states and 248 transitions. [2018-12-02 17:38:21,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-02 17:38:21,675 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2018-12-02 17:38:21,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:21,676 INFO L225 Difference]: With dead ends: 178 [2018-12-02 17:38:21,676 INFO L226 Difference]: Without dead ends: 134 [2018-12-02 17:38:21,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=427, Invalid=2653, Unknown=0, NotChecked=0, Total=3080 [2018-12-02 17:38:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-12-02 17:38:21,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 68. [2018-12-02 17:38:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-12-02 17:38:21,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2018-12-02 17:38:21,686 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 52 [2018-12-02 17:38:21,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:21,687 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2018-12-02 17:38:21,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-02 17:38:21,687 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2018-12-02 17:38:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-02 17:38:21,687 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:21,687 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-12-02 17:38:21,687 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:21,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:21,687 INFO L82 PathProgramCache]: Analyzing trace with hash -558812858, now seen corresponding path program 1 times [2018-12-02 17:38:21,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:38:21,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:38:21,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:38:21,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:21,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:38:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 17:38:21,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:38:21,982 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 17:38:21,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:22,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:22,077 INFO L478 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 29 treesize of output 29 [2018-12-02 17:38:22,079 INFO L478 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 [2018-12-02 17:38:22,082 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,083 INFO L478 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 [2018-12-02 17:38:22,083 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,088 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,097 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,098 INFO L478 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 28 treesize of output 38 [2018-12-02 17:38:22,099 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2018-12-02 17:38:22,100 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,112 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,117 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,119 INFO L478 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 36 treesize of output 34 [2018-12-02 17:38:22,121 INFO L478 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 31 treesize of output 30 [2018-12-02 17:38:22,123 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,124 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,124 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 42 [2018-12-02 17:38:22,124 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,130 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,138 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,139 INFO L478 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 28 treesize of output 27 [2018-12-02 17:38:22,140 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:22,141 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 35 [2018-12-02 17:38:22,141 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,146 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,150 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,177 INFO L478 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 36 treesize of output 34 [2018-12-02 17:38:22,178 INFO L478 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 31 treesize of output 30 [2018-12-02 17:38:22,181 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,181 INFO L478 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 34 [2018-12-02 17:38:22,181 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,186 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,192 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:22,193 INFO L478 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 28 treesize of output 26 [2018-12-02 17:38:22,194 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:22,195 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,195 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 31 [2018-12-02 17:38:22,196 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,203 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,207 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,211 INFO L478 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 29 treesize of output 29 [2018-12-02 17:38:22,213 INFO L478 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 [2018-12-02 17:38:22,215 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,215 INFO L478 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 [2018-12-02 17:38:22,215 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,219 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,227 INFO L478 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 28 treesize of output 29 [2018-12-02 17:38:22,228 INFO L478 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 [2018-12-02 17:38:22,228 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,233 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,237 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,255 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:38:22,255 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:85, output treesize:210 [2018-12-02 17:38:22,569 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 17:38:22,569 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,588 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,589 INFO L478 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 55 treesize of output 51 [2018-12-02 17:38:22,591 INFO L478 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 [2018-12-02 17:38:22,591 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,598 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,598 INFO L478 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 42 treesize of output 37 [2018-12-02 17:38:22,599 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,602 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,610 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,611 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,613 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:22,613 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 62 [2018-12-02 17:38:22,615 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:22,625 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 62 [2018-12-02 17:38:22,626 INFO L267 ElimStorePlain]: Start of recursive call 7: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-02 17:38:22,636 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,649 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:22,649 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:173, output treesize:46 [2018-12-02 17:38:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 17:38:22,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:38:22,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 35 [2018-12-02 17:38:22,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-02 17:38:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-02 17:38:22,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1085, Unknown=4, NotChecked=0, Total=1190 [2018-12-02 17:38:22,958 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 35 states. [2018-12-02 17:38:23,343 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-12-02 17:38:24,544 WARN L180 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2018-12-02 17:38:25,192 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-12-02 17:38:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:28,494 INFO L93 Difference]: Finished difference Result 198 states and 270 transitions. [2018-12-02 17:38:28,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-12-02 17:38:28,494 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 49 [2018-12-02 17:38:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:28,496 INFO L225 Difference]: With dead ends: 198 [2018-12-02 17:38:28,496 INFO L226 Difference]: Without dead ends: 160 [2018-12-02 17:38:28,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1545 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=574, Invalid=5117, Unknown=9, NotChecked=0, Total=5700 [2018-12-02 17:38:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-12-02 17:38:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2018-12-02 17:38:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-12-02 17:38:28,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 199 transitions. [2018-12-02 17:38:28,528 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 199 transitions. Word has length 49 [2018-12-02 17:38:28,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:28,528 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 199 transitions. [2018-12-02 17:38:28,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-02 17:38:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 199 transitions. [2018-12-02 17:38:28,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-02 17:38:28,528 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:28,529 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:38:28,529 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:28,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:28,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1849569550, now seen corresponding path program 1 times [2018-12-02 17:38:28,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:38:28,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:38:28,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:38:28,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:28,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:38:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 17:38:28,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:38:28,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 17:38:28,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 17:38:28,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 17:38:28,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 17:38:28,566 INFO L87 Difference]: Start difference. First operand 146 states and 199 transitions. Second operand 8 states. [2018-12-02 17:38:28,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:28,623 INFO L93 Difference]: Finished difference Result 181 states and 247 transitions. [2018-12-02 17:38:28,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 17:38:28,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-12-02 17:38:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:28,624 INFO L225 Difference]: With dead ends: 181 [2018-12-02 17:38:28,624 INFO L226 Difference]: Without dead ends: 179 [2018-12-02 17:38:28,624 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-02 17:38:28,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-12-02 17:38:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 154. [2018-12-02 17:38:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-12-02 17:38:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 210 transitions. [2018-12-02 17:38:28,649 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 210 transitions. Word has length 50 [2018-12-02 17:38:28,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:28,649 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 210 transitions. [2018-12-02 17:38:28,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 17:38:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 210 transitions. [2018-12-02 17:38:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-02 17:38:28,650 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:28,650 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:38:28,650 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:28,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:28,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1038750923, now seen corresponding path program 2 times [2018-12-02 17:38:28,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 17:38:28,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 17:38:28,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:38:28,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:28,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 17:38:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-12-02 17:38:28,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 17:38:28,956 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 17:38:28,963 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 17:38:28,986 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 17:38:28,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 17:38:28,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:29,054 INFO L478 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 36 treesize of output 34 [2018-12-02 17:38:29,056 INFO L478 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 31 treesize of output 30 [2018-12-02 17:38:29,058 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,059 INFO L478 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 34 [2018-12-02 17:38:29,059 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,065 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,073 INFO L478 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 28 treesize of output 21 [2018-12-02 17:38:29,075 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,075 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,077 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2018-12-02 17:38:29,077 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,083 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,089 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,098 INFO L478 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 29 treesize of output 29 [2018-12-02 17:38:29,101 INFO L478 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 [2018-12-02 17:38:29,104 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,106 INFO L478 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 [2018-12-02 17:38:29,106 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,113 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,126 INFO L478 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 28 treesize of output 29 [2018-12-02 17:38:29,128 INFO L478 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 8 treesize of output 7 [2018-12-02 17:38:29,128 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,133 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,139 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,165 INFO L478 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 36 treesize of output 34 [2018-12-02 17:38:29,166 INFO L478 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 31 treesize of output 30 [2018-12-02 17:38:29,168 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,168 INFO L478 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 34 [2018-12-02 17:38:29,169 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,173 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,179 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,180 INFO L478 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 28 treesize of output 26 [2018-12-02 17:38:29,181 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,182 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,182 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 31 [2018-12-02 17:38:29,182 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,186 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,190 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,194 INFO L478 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 29 treesize of output 29 [2018-12-02 17:38:29,195 INFO L478 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 [2018-12-02 17:38:29,197 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,198 INFO L478 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 [2018-12-02 17:38:29,198 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,202 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,210 INFO L478 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 28 treesize of output 29 [2018-12-02 17:38:29,212 INFO L478 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 [2018-12-02 17:38:29,212 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,216 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,221 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,240 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:38:29,240 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:81, output treesize:194 [2018-12-02 17:38:29,534 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,534 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,535 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 114 [2018-12-02 17:38:29,537 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:29,538 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,538 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,539 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 79 [2018-12-02 17:38:29,539 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,553 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,618 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,651 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 141 [2018-12-02 17:38:29,657 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:29,658 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 165 [2018-12-02 17:38:29,659 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:29,834 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:30,128 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 130 treesize of output 110 [2018-12-02 17:38:30,138 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:30,143 INFO L478 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 109 treesize of output 94 [2018-12-02 17:38:30,144 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:30,314 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:30,438 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:30,438 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:238, output treesize:209 [2018-12-02 17:38:37,539 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-12-02 17:38:37,740 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 17:38:37,741 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) 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.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) 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:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 45 more [2018-12-02 17:38:37,747 INFO L168 Benchmark]: Toolchain (without parser) took 124261.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 950.6 MB in the beginning and 970.7 MB in the end (delta: -20.1 MB). Peak memory consumption was 108.4 MB. Max. memory is 11.5 GB. [2018-12-02 17:38:37,748 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 17:38:37,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -135.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-02 17:38:37,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 17:38:37,749 INFO L168 Benchmark]: Boogie Preprocessor took 18.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 17:38:37,749 INFO L168 Benchmark]: RCFGBuilder took 201.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2018-12-02 17:38:37,749 INFO L168 Benchmark]: TraceAbstraction took 123754.54 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 30.4 MB). Free memory was 1.1 GB in the beginning and 970.7 MB in the end (delta: 85.7 MB). Peak memory consumption was 116.1 MB. Max. memory is 11.5 GB. [2018-12-02 17:38:37,750 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -135.7 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 201.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 123754.54 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 30.4 MB). Free memory was 1.1 GB in the beginning and 970.7 MB in the end (delta: 85.7 MB). Peak memory consumption was 116.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-02 17:38:38,763 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 17:38:38,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 17:38:38,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 17:38:38,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 17:38:38,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 17:38:38,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 17:38:38,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 17:38:38,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 17:38:38,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 17:38:38,777 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 17:38:38,777 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 17:38:38,778 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 17:38:38,778 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 17:38:38,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 17:38:38,780 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 17:38:38,780 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 17:38:38,782 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 17:38:38,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 17:38:38,784 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 17:38:38,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 17:38:38,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 17:38:38,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 17:38:38,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 17:38:38,788 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 17:38:38,788 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 17:38:38,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 17:38:38,789 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 17:38:38,790 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 17:38:38,791 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 17:38:38,791 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 17:38:38,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 17:38:38,792 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 17:38:38,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 17:38:38,792 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 17:38:38,793 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 17:38:38,793 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 17:38:38,801 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 17:38:38,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 17:38:38,802 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 17:38:38,802 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 17:38:38,803 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 17:38:38,803 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 17:38:38,803 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 17:38:38,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 17:38:38,803 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 17:38:38,803 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 17:38:38,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 17:38:38,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 17:38:38,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 17:38:38,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 17:38:38,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 17:38:38,805 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 17:38:38,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 17:38:38,806 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 17:38:38,806 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 17:38:38,806 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_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer 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 -> Automizer 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 -> 63ea7ed840682b4e196bd141458679e7836ad115 [2018-12-02 17:38:38,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 17:38:38,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 17:38:38,832 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 17:38:38,833 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 17:38:38,834 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 17:38:38,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/../../sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i [2018-12-02 17:38:38,868 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/1b1084b5d/8aa72fe2358a436fbbd04c510e3a699d/FLAG11407bdfe [2018-12-02 17:38:39,344 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 17:38:39,344 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/sv-benchmarks/c/heap-manipulation/dancing_true-unreach-call_false-valid-memtrack.i [2018-12-02 17:38:39,351 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/1b1084b5d/8aa72fe2358a436fbbd04c510e3a699d/FLAG11407bdfe [2018-12-02 17:38:39,852 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/data/1b1084b5d/8aa72fe2358a436fbbd04c510e3a699d [2018-12-02 17:38:39,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 17:38:39,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 17:38:39,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 17:38:39,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 17:38:39,857 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 17:38:39,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:38:39" (1/1) ... [2018-12-02 17:38:39,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4440c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:39, skipping insertion in model container [2018-12-02 17:38:39,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:38:39" (1/1) ... [2018-12-02 17:38:39,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 17:38:39,881 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 17:38:40,033 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 17:38:40,039 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 17:38:40,105 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 17:38:40,127 INFO L195 MainTranslator]: Completed translation [2018-12-02 17:38:40,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40 WrapperNode [2018-12-02 17:38:40,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 17:38:40,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 17:38:40,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 17:38:40,128 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 17:38:40,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 17:38:40,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 17:38:40,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 17:38:40,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 17:38:40,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... [2018-12-02 17:38:40,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 17:38:40,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 17:38:40,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 17:38:40,169 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 17:38:40,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/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 [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2018-12-02 17:38:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 17:38:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 17:38:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure re_insert [2018-12-02 17:38:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure re_insert [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 17:38:40,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-02 17:38:40,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-02 17:38:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 17:38:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2018-12-02 17:38:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure remove [2018-12-02 17:38:40,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 17:38:40,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 17:38:40,403 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 17:38:40,403 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 17:38:40,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:38:40 BoogieIcfgContainer [2018-12-02 17:38:40,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 17:38:40,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 17:38:40,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 17:38:40,406 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 17:38:40,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:38:39" (1/3) ... [2018-12-02 17:38:40,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f09841b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:38:40, skipping insertion in model container [2018-12-02 17:38:40,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:38:40" (2/3) ... [2018-12-02 17:38:40,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f09841b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:38:40, skipping insertion in model container [2018-12-02 17:38:40,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:38:40" (3/3) ... [2018-12-02 17:38:40,407 INFO L112 eAbstractionObserver]: Analyzing ICFG dancing_true-unreach-call_false-valid-memtrack.i [2018-12-02 17:38:40,413 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 17:38:40,417 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 17:38:40,427 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 17:38:40,443 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 17:38:40,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 17:38:40,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 17:38:40,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 17:38:40,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 17:38:40,444 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 17:38:40,444 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 17:38:40,444 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 17:38:40,444 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 17:38:40,454 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-12-02 17:38:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 17:38:40,457 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:40,458 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:38:40,459 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:40,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:40,462 INFO L82 PathProgramCache]: Analyzing trace with hash -633334339, now seen corresponding path program 1 times [2018-12-02 17:38:40,464 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:38:40,465 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:38:40,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:40,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:38:40,531 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:38:40,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:38:40,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 17:38:40,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 17:38:40,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 17:38:40,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 17:38:40,546 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2018-12-02 17:38:40,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:40,563 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2018-12-02 17:38:40,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 17:38:40,564 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-02 17:38:40,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:40,570 INFO L225 Difference]: With dead ends: 93 [2018-12-02 17:38:40,570 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 17:38:40,573 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 17:38:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 17:38:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-12-02 17:38:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-12-02 17:38:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2018-12-02 17:38:40,599 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 26 [2018-12-02 17:38:40,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:40,599 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2018-12-02 17:38:40,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 17:38:40,599 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2018-12-02 17:38:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 17:38:40,601 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:40,601 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:38:40,601 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:40,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:40,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1204061740, now seen corresponding path program 1 times [2018-12-02 17:38:40,602 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:38:40,602 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:38:40,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:40,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:38:40,685 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:38:40,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:38:40,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 17:38:40,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 17:38:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 17:38:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 17:38:40,687 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 6 states. [2018-12-02 17:38:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:40,763 INFO L93 Difference]: Finished difference Result 91 states and 120 transitions. [2018-12-02 17:38:40,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 17:38:40,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-12-02 17:38:40,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:40,765 INFO L225 Difference]: With dead ends: 91 [2018-12-02 17:38:40,765 INFO L226 Difference]: Without dead ends: 65 [2018-12-02 17:38:40,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-02 17:38:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-02 17:38:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2018-12-02 17:38:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-02 17:38:40,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2018-12-02 17:38:40,777 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 26 [2018-12-02 17:38:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:40,777 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2018-12-02 17:38:40,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 17:38:40,777 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2018-12-02 17:38:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-02 17:38:40,778 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:40,779 INFO L402 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] [2018-12-02 17:38:40,779 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:40,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:40,779 INFO L82 PathProgramCache]: Analyzing trace with hash 351866420, now seen corresponding path program 1 times [2018-12-02 17:38:40,780 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:38:40,780 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:38:40,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:40,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:40,872 INFO L478 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 [2018-12-02 17:38:40,873 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:40,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:40,875 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-12-02 17:38:40,883 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:40,884 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:40,885 INFO L478 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 4 [2018-12-02 17:38:40,885 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:40,887 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:40,887 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:4 [2018-12-02 17:38:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 17:38:40,919 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 17:38:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 17:38:40,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:38:40,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-02 17:38:40,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 17:38:40,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 17:38:40,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-02 17:38:40,990 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand 8 states. [2018-12-02 17:38:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:41,302 INFO L93 Difference]: Finished difference Result 118 states and 161 transitions. [2018-12-02 17:38:41,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 17:38:41,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-12-02 17:38:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:41,305 INFO L225 Difference]: With dead ends: 118 [2018-12-02 17:38:41,305 INFO L226 Difference]: Without dead ends: 77 [2018-12-02 17:38:41,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-12-02 17:38:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-02 17:38:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2018-12-02 17:38:41,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-02 17:38:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2018-12-02 17:38:41,318 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 35 [2018-12-02 17:38:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:41,319 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2018-12-02 17:38:41,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 17:38:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2018-12-02 17:38:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-02 17:38:41,320 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:41,320 INFO L402 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] [2018-12-02 17:38:41,320 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:41,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:41,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1604870462, now seen corresponding path program 1 times [2018-12-02 17:38:41,321 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:38:41,321 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:38:41,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:41,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 17:38:41,373 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:38:41,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:38:41,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 17:38:41,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 17:38:41,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 17:38:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 17:38:41,375 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand 4 states. [2018-12-02 17:38:41,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:41,388 INFO L93 Difference]: Finished difference Result 118 states and 160 transitions. [2018-12-02 17:38:41,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 17:38:41,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-12-02 17:38:41,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:41,389 INFO L225 Difference]: With dead ends: 118 [2018-12-02 17:38:41,389 INFO L226 Difference]: Without dead ends: 67 [2018-12-02 17:38:41,390 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 17:38:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-12-02 17:38:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-12-02 17:38:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-02 17:38:41,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2018-12-02 17:38:41,400 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 37 [2018-12-02 17:38:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:41,400 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2018-12-02 17:38:41,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 17:38:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2018-12-02 17:38:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-02 17:38:41,401 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:41,401 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 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] [2018-12-02 17:38:41,401 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:41,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:41,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1960956955, now seen corresponding path program 1 times [2018-12-02 17:38:41,402 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:38:41,402 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:38:41,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:41,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-02 17:38:41,500 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:38:41,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:38:41,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-02 17:38:41,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-02 17:38:41,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-02 17:38:41,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-02 17:38:41,502 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand 7 states. [2018-12-02 17:38:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:38:41,541 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2018-12-02 17:38:41,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 17:38:41,542 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2018-12-02 17:38:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:38:41,543 INFO L225 Difference]: With dead ends: 77 [2018-12-02 17:38:41,543 INFO L226 Difference]: Without dead ends: 75 [2018-12-02 17:38:41,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-02 17:38:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-12-02 17:38:41,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2018-12-02 17:38:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-12-02 17:38:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2018-12-02 17:38:41,550 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 43 [2018-12-02 17:38:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:38:41,550 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2018-12-02 17:38:41,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-02 17:38:41,550 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2018-12-02 17:38:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-02 17:38:41,551 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:38:41,551 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-12-02 17:38:41,551 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:38:41,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:38:41,551 INFO L82 PathProgramCache]: Analyzing trace with hash -424799352, now seen corresponding path program 1 times [2018-12-02 17:38:41,552 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:38:41,552 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:38:41,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:38:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:38:41,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:38:42,936 WARN L180 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 46 [2018-12-02 17:38:42,949 INFO L478 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 38 treesize of output 36 [2018-12-02 17:38:42,954 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:38:42,962 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:42,974 INFO L478 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 32 treesize of output 36 [2018-12-02 17:38:42,975 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,019 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,151 INFO L478 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 30 treesize of output 26 [2018-12-02 17:38:43,157 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:43,177 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 41 [2018-12-02 17:38:43,178 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2018-12-02 17:38:43,238 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:43,363 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:43,440 INFO L478 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 31 treesize of output 31 [2018-12-02 17:38:43,447 INFO L478 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 [2018-12-02 17:38:43,459 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:43,468 INFO L478 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 [2018-12-02 17:38:43,468 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,500 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,599 INFO L478 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 30 treesize of output 31 [2018-12-02 17:38:43,605 INFO L478 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 [2018-12-02 17:38:43,605 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,628 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,660 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,911 INFO L478 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 38 treesize of output 36 [2018-12-02 17:38:43,915 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:38:43,920 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:43,923 INFO L478 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 32 treesize of output 36 [2018-12-02 17:38:43,924 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,939 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:43,962 INFO L478 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 30 treesize of output 26 [2018-12-02 17:38:43,966 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:43,983 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 46 [2018-12-02 17:38:43,983 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 2 xjuncts. [2018-12-02 17:38:44,016 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:44,040 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:38:44,062 INFO L478 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 31 treesize of output 31 [2018-12-02 17:38:44,066 INFO L478 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 [2018-12-02 17:38:44,071 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:44,074 INFO L478 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 [2018-12-02 17:38:44,075 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:44,085 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:44,110 INFO L478 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 30 treesize of output 31 [2018-12-02 17:38:44,114 INFO L478 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 [2018-12-02 17:38:44,114 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:44,125 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:44,138 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:44,225 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-12-02 17:38:44,225 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 3 variables, input treesize:85, output treesize:270 [2018-12-02 17:38:44,639 WARN L180 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2018-12-02 17:38:45,595 INFO L478 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 56 treesize of output 50 [2018-12-02 17:38:45,600 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:45,601 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:45,601 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:45,602 INFO L478 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 25 treesize of output 32 [2018-12-02 17:38:45,602 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:45,616 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:45,634 INFO L478 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 21 treesize of output 17 [2018-12-02 17:38:45,637 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:38:45,637 INFO L478 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 17 treesize of output 10 [2018-12-02 17:38:45,638 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:45,639 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:45,656 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:45,656 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:109, output treesize:14 [2018-12-02 17:38:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-02 17:38:45,723 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 17:38:46,274 WARN L180 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2018-12-02 17:38:46,280 INFO L478 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 44 treesize of output 43 [2018-12-02 17:38:46,309 INFO L478 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 35 treesize of output 35 [2018-12-02 17:38:46,312 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,312 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,313 INFO L478 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 35 treesize of output 45 [2018-12-02 17:38:46,313 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,324 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,339 INFO L478 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 33 treesize of output 27 [2018-12-02 17:38:46,366 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2018-12-02 17:38:46,366 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,372 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,380 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,386 INFO L478 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 44 treesize of output 43 [2018-12-02 17:38:46,426 INFO L478 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 35 treesize of output 35 [2018-12-02 17:38:46,429 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,430 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,431 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 45 [2018-12-02 17:38:46,431 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,446 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,463 INFO L478 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 33 treesize of output 27 [2018-12-02 17:38:46,488 INFO L478 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 10 [2018-12-02 17:38:46,488 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,496 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,503 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,585 INFO L478 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 44 treesize of output 43 [2018-12-02 17:38:46,626 INFO L478 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 35 treesize of output 35 [2018-12-02 17:38:46,629 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,629 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,630 INFO L478 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 35 treesize of output 45 [2018-12-02 17:38:46,630 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,643 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,660 INFO L478 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 33 treesize of output 27 [2018-12-02 17:38:46,689 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,689 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,690 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2018-12-02 17:38:46,690 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,697 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,704 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,710 INFO L478 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 44 treesize of output 43 [2018-12-02 17:38:46,753 INFO L478 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 35 treesize of output 35 [2018-12-02 17:38:46,756 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,756 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,757 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 45 [2018-12-02 17:38:46,757 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,768 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,783 INFO L478 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 33 treesize of output 27 [2018-12-02 17:38:46,809 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,810 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:38:46,810 INFO L478 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 [2018-12-02 17:38:46,810 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,817 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,824 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:38:46,860 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:38:46,860 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 4 variables, input treesize:197, output treesize:45 [2018-12-02 17:38:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-12-02 17:38:46,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:38:46,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2018-12-02 17:38:46,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-02 17:38:46,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-02 17:38:46,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-12-02 17:38:46,966 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 19 states. [2018-12-02 17:38:47,741 WARN L180 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2018-12-02 17:38:48,275 WARN L180 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2018-12-02 17:38:48,506 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2018-12-02 17:38:49,165 WARN L180 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2018-12-02 17:38:50,560 WARN L180 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2018-12-02 17:38:52,359 WARN L180 SmtUtils]: Spent 995.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2018-12-02 17:38:53,341 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-12-02 17:38:56,756 WARN L180 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2018-12-02 17:38:57,171 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2018-12-02 17:38:57,612 WARN L180 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-12-02 17:38:58,078 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2018-12-02 17:39:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:39:02,506 INFO L93 Difference]: Finished difference Result 315 states and 499 transitions. [2018-12-02 17:39:02,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-02 17:39:02,507 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 49 [2018-12-02 17:39:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:39:02,510 INFO L225 Difference]: With dead ends: 315 [2018-12-02 17:39:02,510 INFO L226 Difference]: Without dead ends: 279 [2018-12-02 17:39:02,511 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=446, Invalid=1906, Unknown=0, NotChecked=0, Total=2352 [2018-12-02 17:39:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-12-02 17:39:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 151. [2018-12-02 17:39:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-12-02 17:39:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 216 transitions. [2018-12-02 17:39:02,553 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 216 transitions. Word has length 49 [2018-12-02 17:39:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:39:02,553 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 216 transitions. [2018-12-02 17:39:02,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-02 17:39:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 216 transitions. [2018-12-02 17:39:02,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-02 17:39:02,555 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:39:02,555 INFO L402 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] [2018-12-02 17:39:02,555 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:39:02,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:39:02,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1058687156, now seen corresponding path program 1 times [2018-12-02 17:39:02,555 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:39:02,555 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:39:02,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:39:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:39:02,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:39:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 17:39:02,614 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:39:02,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:39:02,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 17:39:02,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 17:39:02,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 17:39:02,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 17:39:02,616 INFO L87 Difference]: Start difference. First operand 151 states and 216 transitions. Second operand 6 states. [2018-12-02 17:39:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:39:02,646 INFO L93 Difference]: Finished difference Result 163 states and 227 transitions. [2018-12-02 17:39:02,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 17:39:02,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-12-02 17:39:02,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:39:02,647 INFO L225 Difference]: With dead ends: 163 [2018-12-02 17:39:02,647 INFO L226 Difference]: Without dead ends: 151 [2018-12-02 17:39:02,648 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-02 17:39:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-12-02 17:39:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 131. [2018-12-02 17:39:02,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-12-02 17:39:02,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 184 transitions. [2018-12-02 17:39:02,662 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 184 transitions. Word has length 44 [2018-12-02 17:39:02,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:39:02,663 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 184 transitions. [2018-12-02 17:39:02,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 17:39:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 184 transitions. [2018-12-02 17:39:02,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-02 17:39:02,663 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:39:02,663 INFO L402 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] [2018-12-02 17:39:02,664 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:39:02,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:39:02,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1887229384, now seen corresponding path program 1 times [2018-12-02 17:39:02,664 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:39:02,664 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:39:02,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:39:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:39:02,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:39:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 17:39:02,762 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:39:02,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:39:02,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 17:39:02,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 17:39:02,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 17:39:02,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 17:39:02,764 INFO L87 Difference]: Start difference. First operand 131 states and 184 transitions. Second operand 5 states. [2018-12-02 17:39:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:39:02,877 INFO L93 Difference]: Finished difference Result 233 states and 316 transitions. [2018-12-02 17:39:02,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 17:39:02,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-12-02 17:39:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:39:02,879 INFO L225 Difference]: With dead ends: 233 [2018-12-02 17:39:02,879 INFO L226 Difference]: Without dead ends: 117 [2018-12-02 17:39:02,879 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 17:39:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-12-02 17:39:02,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-12-02 17:39:02,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-12-02 17:39:02,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 153 transitions. [2018-12-02 17:39:02,892 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 153 transitions. Word has length 45 [2018-12-02 17:39:02,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:39:02,893 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 153 transitions. [2018-12-02 17:39:02,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 17:39:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 153 transitions. [2018-12-02 17:39:02,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-02 17:39:02,893 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:39:02,893 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-12-02 17:39:02,893 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:39:02,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:39:02,894 INFO L82 PathProgramCache]: Analyzing trace with hash -339958140, now seen corresponding path program 1 times [2018-12-02 17:39:02,894 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:39:02,894 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:39:02,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:39:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:39:02,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:39:03,120 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-12-02 17:39:03,139 INFO L478 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 31 treesize of output 31 [2018-12-02 17:39:03,142 INFO L478 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 [2018-12-02 17:39:03,147 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:03,148 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:03,149 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 31 [2018-12-02 17:39:03,149 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,163 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,189 INFO L478 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 30 treesize of output 31 [2018-12-02 17:39:03,192 INFO L478 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 [2018-12-02 17:39:03,193 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,203 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,214 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,220 INFO L478 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 38 treesize of output 36 [2018-12-02 17:39:03,223 INFO L478 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 33 treesize of output 32 [2018-12-02 17:39:03,228 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:03,229 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:03,230 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 44 [2018-12-02 17:39:03,230 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,252 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,275 INFO L478 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 30 treesize of output 26 [2018-12-02 17:39:03,280 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:03,285 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:03,295 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 50 [2018-12-02 17:39:03,295 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-02 17:39:03,325 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:39:03,349 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:39:03,393 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-02 17:39:03,393 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 2 variables, input treesize:50, output treesize:106 [2018-12-02 17:39:03,716 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-12-02 17:39:03,716 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,720 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:03,720 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:81, output treesize:1 [2018-12-02 17:39:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-02 17:39:03,725 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 17:39:04,074 INFO L478 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 43 treesize of output 42 [2018-12-02 17:39:04,140 INFO L478 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 14 treesize of output 18 [2018-12-02 17:39:04,143 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:04,144 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:04,144 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 32 [2018-12-02 17:39:04,145 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,152 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,164 INFO L478 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 27 treesize of output 21 [2018-12-02 17:39:04,165 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:04,166 INFO L478 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 21 treesize of output 10 [2018-12-02 17:39:04,166 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,169 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,172 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,179 INFO L478 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 43 treesize of output 42 [2018-12-02 17:39:04,233 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2018-12-02 17:39:04,235 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:04,236 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:04,236 INFO L478 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 32 [2018-12-02 17:39:04,236 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,245 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,256 INFO L478 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 27 treesize of output 21 [2018-12-02 17:39:04,258 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:04,259 INFO L478 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 10 [2018-12-02 17:39:04,259 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,262 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,265 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:04,276 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:39:04,276 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 2 variables, input treesize:97, output treesize:17 [2018-12-02 17:39:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-12-02 17:39:04,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:39:04,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2018-12-02 17:39:04,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-02 17:39:04,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-02 17:39:04,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2018-12-02 17:39:04,343 INFO L87 Difference]: Start difference. First operand 115 states and 153 transitions. Second operand 21 states. [2018-12-02 17:39:04,939 WARN L180 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-12-02 17:39:05,080 WARN L180 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2018-12-02 17:39:05,461 WARN L180 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2018-12-02 17:39:07,252 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2018-12-02 17:39:08,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:39:08,674 INFO L93 Difference]: Finished difference Result 245 states and 349 transitions. [2018-12-02 17:39:08,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-02 17:39:08,675 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 49 [2018-12-02 17:39:08,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:39:08,676 INFO L225 Difference]: With dead ends: 245 [2018-12-02 17:39:08,676 INFO L226 Difference]: Without dead ends: 171 [2018-12-02 17:39:08,677 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=320, Invalid=1486, Unknown=0, NotChecked=0, Total=1806 [2018-12-02 17:39:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-12-02 17:39:08,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 122. [2018-12-02 17:39:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-12-02 17:39:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 164 transitions. [2018-12-02 17:39:08,701 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 164 transitions. Word has length 49 [2018-12-02 17:39:08,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:39:08,702 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 164 transitions. [2018-12-02 17:39:08,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-02 17:39:08,702 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 164 transitions. [2018-12-02 17:39:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-12-02 17:39:08,702 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:39:08,703 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2018-12-02 17:39:08,703 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:39:08,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:39:08,703 INFO L82 PathProgramCache]: Analyzing trace with hash -183901692, now seen corresponding path program 1 times [2018-12-02 17:39:08,703 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:39:08,703 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:39:08,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:39:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:39:08,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:39:08,788 INFO L478 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 [2018-12-02 17:39:08,789 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:08,795 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:08,795 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2018-12-02 17:39:08,816 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:08,817 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:08,817 INFO L478 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 4 [2018-12-02 17:39:08,817 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:08,825 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:08,825 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:14 [2018-12-02 17:39:08,939 INFO L478 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 31 treesize of output 31 [2018-12-02 17:39:08,942 INFO L478 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 [2018-12-02 17:39:08,947 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:08,950 INFO L478 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 [2018-12-02 17:39:08,950 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:08,960 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:08,985 INFO L478 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 30 treesize of output 31 [2018-12-02 17:39:08,988 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-12-02 17:39:08,988 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:09,000 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:09,012 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:09,018 INFO L478 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 38 treesize of output 36 [2018-12-02 17:39:09,022 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:39:09,027 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:09,030 INFO L478 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 32 treesize of output 36 [2018-12-02 17:39:09,031 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:09,048 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:09,068 INFO L478 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 30 treesize of output 26 [2018-12-02 17:39:09,071 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:09,101 INFO L478 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 2 case distinctions, treesize of input 23 treesize of output 43 [2018-12-02 17:39:09,101 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 2 xjuncts. [2018-12-02 17:39:09,132 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:39:09,159 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:39:09,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-02 17:39:09,202 INFO L202 ElimStorePlain]: Needed 11 recursive calls to eliminate 3 variables, input treesize:47, output treesize:100 [2018-12-02 17:39:09,840 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2018-12-02 17:39:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 17:39:09,850 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 17:39:11,424 INFO L478 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 37 treesize of output 38 [2018-12-02 17:39:11,486 INFO L478 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 14 treesize of output 18 [2018-12-02 17:39:11,491 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:11,495 INFO L478 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 24 [2018-12-02 17:39:11,496 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,513 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,572 INFO L478 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 32 treesize of output 34 [2018-12-02 17:39:11,575 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:11,597 INFO L478 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 26 treesize of output 31 [2018-12-02 17:39:11,597 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-12-02 17:39:11,667 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:11,670 INFO L478 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 20 [2018-12-02 17:39:11,670 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,724 INFO L478 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 7 [2018-12-02 17:39:11,724 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,759 INFO L267 ElimStorePlain]: Start of recursive call 5: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:39:11,778 INFO L478 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 32 treesize of output 34 [2018-12-02 17:39:11,783 INFO L478 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 29 treesize of output 21 [2018-12-02 17:39:11,783 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,824 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:11,827 INFO L478 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 12 [2018-12-02 17:39:11,828 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,862 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:11,886 INFO L478 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 26 treesize of output 31 [2018-12-02 17:39:11,887 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-12-02 17:39:11,933 INFO L267 ElimStorePlain]: Start of recursive call 9: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:39:11,936 INFO L478 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 31 treesize of output 27 [2018-12-02 17:39:11,939 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:11,941 INFO L478 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 [2018-12-02 17:39:11,942 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:11,949 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,018 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-12-02 17:39:12,027 INFO L478 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 46 treesize of output 45 [2018-12-02 17:39:12,086 INFO L478 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 40 treesize of output 40 [2018-12-02 17:39:12,090 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:12,092 INFO L478 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 36 treesize of output 39 [2018-12-02 17:39:12,093 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,112 INFO L267 ElimStorePlain]: Start of recursive call 16: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,115 INFO L478 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 28 treesize of output 31 [2018-12-02 17:39:12,118 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:12,121 INFO L478 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 24 [2018-12-02 17:39:12,121 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,138 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,184 INFO L478 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 38 treesize of output 32 [2018-12-02 17:39:12,216 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:12,219 INFO L478 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 [2018-12-02 17:39:12,219 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,222 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:12,245 INFO L478 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 26 treesize of output 31 [2018-12-02 17:39:12,246 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 4 xjuncts. [2018-12-02 17:39:12,291 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:39:12,296 INFO L478 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 32 treesize of output 26 [2018-12-02 17:39:12,299 INFO L478 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 [2018-12-02 17:39:12,300 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,311 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:12,313 INFO L478 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 [2018-12-02 17:39:12,313 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,317 INFO L267 ElimStorePlain]: Start of recursive call 23: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:12,357 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-12-02 17:39:12,451 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 10 xjuncts. [2018-12-02 17:39:12,451 INFO L202 ElimStorePlain]: Needed 25 recursive calls to eliminate 2 variables, input treesize:46, output treesize:79 [2018-12-02 17:39:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 17:39:12,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:39:12,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-12-02 17:39:12,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-02 17:39:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-02 17:39:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2018-12-02 17:39:12,680 INFO L87 Difference]: Start difference. First operand 122 states and 164 transitions. Second operand 23 states. [2018-12-02 17:39:13,059 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-12-02 17:39:13,913 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2018-12-02 17:39:14,246 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2018-12-02 17:39:14,586 WARN L180 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2018-12-02 17:39:14,780 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2018-12-02 17:39:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:39:17,125 INFO L93 Difference]: Finished difference Result 248 states and 339 transitions. [2018-12-02 17:39:17,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-02 17:39:17,126 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 52 [2018-12-02 17:39:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:39:17,127 INFO L225 Difference]: With dead ends: 248 [2018-12-02 17:39:17,127 INFO L226 Difference]: Without dead ends: 148 [2018-12-02 17:39:17,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2018-12-02 17:39:17,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-12-02 17:39:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2018-12-02 17:39:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-12-02 17:39:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 170 transitions. [2018-12-02 17:39:17,145 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 170 transitions. Word has length 52 [2018-12-02 17:39:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:39:17,145 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 170 transitions. [2018-12-02 17:39:17,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-02 17:39:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 170 transitions. [2018-12-02 17:39:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-02 17:39:17,145 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:39:17,146 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-12-02 17:39:17,146 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:39:17,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:39:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash -558812858, now seen corresponding path program 1 times [2018-12-02 17:39:17,146 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:39:17,146 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:39:17,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:39:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:39:17,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:39:17,615 WARN L180 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2018-12-02 17:39:17,623 INFO L478 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 38 treesize of output 36 [2018-12-02 17:39:17,627 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:39:17,633 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:17,636 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:17,637 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 44 [2018-12-02 17:39:17,637 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,656 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,687 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:17,688 INFO L478 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 30 treesize of output 34 [2018-12-02 17:39:17,692 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:17,692 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2018-12-02 17:39:17,693 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,708 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,725 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,766 INFO L478 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 31 treesize of output 31 [2018-12-02 17:39:17,771 INFO L478 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 [2018-12-02 17:39:17,779 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:17,785 INFO L478 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 [2018-12-02 17:39:17,785 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,802 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,834 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:17,839 INFO L478 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 30 treesize of output 42 [2018-12-02 17:39:17,844 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-12-02 17:39:17,844 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,869 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:17,891 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,011 INFO L478 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 38 treesize of output 36 [2018-12-02 17:39:18,015 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:39:18,020 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,020 INFO L478 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 32 treesize of output 36 [2018-12-02 17:39:18,021 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,033 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,051 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:18,051 INFO L478 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 30 treesize of output 33 [2018-12-02 17:39:18,055 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,057 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,057 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:18,058 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 42 [2018-12-02 17:39:18,058 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,070 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,081 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,105 INFO L478 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 31 treesize of output 31 [2018-12-02 17:39:18,109 INFO L478 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 [2018-12-02 17:39:18,113 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,113 INFO L478 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 [2018-12-02 17:39:18,113 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,122 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,146 INFO L478 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 30 treesize of output 31 [2018-12-02 17:39:18,149 INFO L478 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 [2018-12-02 17:39:18,149 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,158 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,167 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,207 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:39:18,207 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:89, output treesize:117 [2018-12-02 17:39:18,324 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2018-12-02 17:39:18,620 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,621 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,623 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,627 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 111 [2018-12-02 17:39:18,633 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:18,796 INFO L478 Elim1Store]: Elim1 applied some preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 80 [2018-12-02 17:39:18,797 INFO L267 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-12-02 17:39:18,859 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,919 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,921 INFO L478 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 49 treesize of output 45 [2018-12-02 17:39:18,924 INFO L478 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 [2018-12-02 17:39:18,924 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,935 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:39:18,935 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:39:18,936 INFO L478 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 34 treesize of output 32 [2018-12-02 17:39:18,936 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,941 INFO L267 ElimStorePlain]: Start of recursive call 4: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:39:18,981 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 4 variables, input treesize:179, output treesize:50 [2018-12-02 17:39:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 17:39:21,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 17:39:26,796 WARN L180 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2018-12-02 17:39:29,923 WARN L180 SmtUtils]: Spent 2.51 s on a formula simplification that was a NOOP. DAG size: 80 [2018-12-02 17:39:34,772 WARN L180 SmtUtils]: Spent 4.66 s on a formula simplification that was a NOOP. DAG size: 85 [2018-12-02 17:39:51,692 WARN L180 SmtUtils]: Spent 16.69 s on a formula simplification that was a NOOP. DAG size: 81 [2018-12-02 17:40:05,269 WARN L180 SmtUtils]: Spent 13.38 s on a formula simplification. DAG size of input: 158 DAG size of output: 118 [2018-12-02 17:40:05,286 INFO L478 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 224 treesize of output 158 [2018-12-02 17:40:05,409 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2018-12-02 17:40:05,415 INFO L478 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 14 treesize of output 18 [2018-12-02 17:40:05,421 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,427 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2018-12-02 17:40:05,427 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,445 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,500 INFO L478 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 100 treesize of output 94 [2018-12-02 17:40:05,582 INFO L478 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 11 treesize of output 10 [2018-12-02 17:40:05,582 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,678 INFO L478 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 46 treesize of output 50 [2018-12-02 17:40:05,684 INFO L478 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 45 treesize of output 37 [2018-12-02 17:40:05,684 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,742 INFO L478 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 31 treesize of output 23 [2018-12-02 17:40:05,743 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,795 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,798 INFO L478 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 23 treesize of output 12 [2018-12-02 17:40:05,798 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,839 INFO L478 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 36 treesize of output 28 [2018-12-02 17:40:05,839 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,867 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,903 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,903 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,906 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,908 INFO L478 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 28 treesize of output 24 [2018-12-02 17:40:05,909 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,929 INFO L267 ElimStorePlain]: Start of recursive call 7: 5 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:05,935 INFO L478 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 78 treesize of output 71 [2018-12-02 17:40:05,939 INFO L478 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 [2018-12-02 17:40:05,939 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,959 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,959 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:05,959 INFO L478 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 29 treesize of output 17 [2018-12-02 17:40:05,960 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:05,975 INFO L267 ElimStorePlain]: Start of recursive call 13: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,014 INFO L478 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 69 treesize of output 80 [2018-12-02 17:40:06,019 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,019 INFO L478 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 67 treesize of output 58 [2018-12-02 17:40:06,020 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,155 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,188 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,205 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,210 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,210 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,213 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,225 INFO L478 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 1 case distinctions, treesize of input 61 treesize of output 75 [2018-12-02 17:40:06,225 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:06,374 INFO L478 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 64 treesize of output 56 [2018-12-02 17:40:06,375 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,496 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,540 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,541 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,544 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,546 INFO L478 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 56 treesize of output 54 [2018-12-02 17:40:06,546 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,666 INFO L478 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 67 treesize of output 59 [2018-12-02 17:40:06,666 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,770 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,773 INFO L478 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 59 treesize of output 50 [2018-12-02 17:40:06,773 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,858 INFO L478 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 45 treesize of output 37 [2018-12-02 17:40:06,858 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,937 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:06,940 INFO L478 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 16 [2018-12-02 17:40:06,940 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:06,975 INFO L267 ElimStorePlain]: Start of recursive call 16: 8 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:07,008 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:40:07,043 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:40:07,061 INFO L478 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 273 treesize of output 197 [2018-12-02 17:40:07,333 WARN L180 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2018-12-02 17:40:07,339 INFO L478 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 150 treesize of output 138 [2018-12-02 17:40:07,346 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:07,352 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 129 [2018-12-02 17:40:07,352 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:07,393 INFO L267 ElimStorePlain]: Start of recursive call 26: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:07,464 INFO L478 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 124 treesize of output 113 [2018-12-02 17:40:07,706 WARN L180 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2018-12-02 17:40:07,712 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:07,845 INFO L478 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 2 case distinctions, treesize of input 99 treesize of output 107 [2018-12-02 17:40:07,846 INFO L267 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:07,852 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:07,912 INFO L478 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 2 case distinctions, treesize of input 46 treesize of output 70 [2018-12-02 17:40:07,912 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:08,122 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,126 INFO L478 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 46 treesize of output 39 [2018-12-02 17:40:08,130 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,143 INFO L478 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 28 treesize of output 21 [2018-12-02 17:40:08,144 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:08,163 INFO L478 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 [2018-12-02 17:40:08,163 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:08,165 INFO L267 ElimStorePlain]: Start of recursive call 31: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:08,169 INFO L478 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 93 treesize of output 81 [2018-12-02 17:40:08,268 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,275 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,298 INFO L478 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 75 treesize of output 67 [2018-12-02 17:40:08,299 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:08,304 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,318 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,319 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:08,319 INFO L478 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 76 treesize of output 65 [2018-12-02 17:40:08,319 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:08,351 INFO L267 ElimStorePlain]: Start of recursive call 34: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:08,375 INFO L267 ElimStorePlain]: Start of recursive call 28: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:40:08,402 INFO L267 ElimStorePlain]: Start of recursive call 25: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:40:09,325 INFO L478 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 49 treesize of output 48 [2018-12-02 17:40:09,378 INFO L478 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 33 treesize of output 33 [2018-12-02 17:40:09,382 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:09,385 INFO L478 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 33 treesize of output 36 [2018-12-02 17:40:09,385 INFO L267 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:09,399 INFO L267 ElimStorePlain]: Start of recursive call 38: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:09,425 INFO L478 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 31 treesize of output 25 [2018-12-02 17:40:09,453 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:09,455 INFO L478 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 [2018-12-02 17:40:09,455 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:09,459 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:09,462 INFO L478 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 20 treesize of output 9 [2018-12-02 17:40:09,462 INFO L267 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:09,481 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:09,496 INFO L267 ElimStorePlain]: Start of recursive call 37: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:10,644 INFO L478 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 183 treesize of output 184 [2018-12-02 17:40:10,747 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2018-12-02 17:40:10,752 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:10,756 INFO L478 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 24 [2018-12-02 17:40:10,756 INFO L267 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:10,776 INFO L267 ElimStorePlain]: Start of recursive call 44: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:10,811 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 172 treesize of output 166 [2018-12-02 17:40:10,816 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:10,820 INFO L478 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 166 treesize of output 155 [2018-12-02 17:40:10,820 INFO L267 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:10,835 INFO L267 ElimStorePlain]: Start of recursive call 46: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:10,859 INFO L267 ElimStorePlain]: Start of recursive call 43: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:10,879 INFO L478 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 273 treesize of output 272 [2018-12-02 17:40:11,017 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-12-02 17:40:11,024 INFO L478 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 219 treesize of output 219 [2018-12-02 17:40:11,031 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:11,038 INFO L478 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 219 treesize of output 222 [2018-12-02 17:40:11,038 INFO L267 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:11,068 INFO L267 ElimStorePlain]: Start of recursive call 49: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:11,138 INFO L478 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 217 treesize of output 211 [2018-12-02 17:40:11,328 WARN L180 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2018-12-02 17:40:11,341 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:11,347 INFO L478 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 210 treesize of output 201 [2018-12-02 17:40:11,347 INFO L267 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:11,355 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:11,364 INFO L478 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 206 treesize of output 195 [2018-12-02 17:40:11,365 INFO L267 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:11,398 INFO L267 ElimStorePlain]: Start of recursive call 51: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:11,461 INFO L267 ElimStorePlain]: Start of recursive call 48: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,076 INFO L478 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 156 treesize of output 105 [2018-12-02 17:40:12,218 WARN L180 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 33 [2018-12-02 17:40:12,226 INFO L478 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 14 treesize of output 18 [2018-12-02 17:40:12,232 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,237 INFO L478 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 24 [2018-12-02 17:40:12,237 INFO L267 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,256 INFO L267 ElimStorePlain]: Start of recursive call 55: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,300 INFO L478 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 73 treesize of output 67 [2018-12-02 17:40:12,374 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-12-02 17:40:12,374 INFO L267 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,437 INFO L478 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 51 treesize of output 44 [2018-12-02 17:40:12,440 INFO L478 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 [2018-12-02 17:40:12,440 INFO L267 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,459 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,459 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,459 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2018-12-02 17:40:12,460 INFO L267 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,467 INFO L267 ElimStorePlain]: Start of recursive call 59: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,480 INFO L478 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 46 treesize of output 45 [2018-12-02 17:40:12,484 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,488 INFO L478 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 20 treesize of output 9 [2018-12-02 17:40:12,488 INFO L267 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,507 INFO L478 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 [2018-12-02 17:40:12,508 INFO L267 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,517 INFO L478 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 [2018-12-02 17:40:12,517 INFO L267 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,519 INFO L267 ElimStorePlain]: Start of recursive call 62: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,553 INFO L478 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 42 treesize of output 48 [2018-12-02 17:40:12,563 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,566 INFO L478 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 43 treesize of output 34 [2018-12-02 17:40:12,566 INFO L267 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,626 INFO L478 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 23 treesize of output 15 [2018-12-02 17:40:12,627 INFO L267 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,675 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,678 INFO L478 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 34 treesize of output 25 [2018-12-02 17:40:12,678 INFO L267 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,707 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,707 INFO L478 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 20 treesize of output 11 [2018-12-02 17:40:12,707 INFO L267 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,719 INFO L267 ElimStorePlain]: Start of recursive call 66: 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,729 INFO L267 ElimStorePlain]: Start of recursive call 57: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:40:12,739 INFO L267 ElimStorePlain]: Start of recursive call 54: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:40:12,754 INFO L478 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 238 treesize of output 162 [2018-12-02 17:40:12,921 WARN L180 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 34 [2018-12-02 17:40:12,927 INFO L478 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 110 treesize of output 98 [2018-12-02 17:40:12,932 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:12,939 INFO L478 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 98 treesize of output 89 [2018-12-02 17:40:12,939 INFO L267 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:12,966 INFO L267 ElimStorePlain]: Start of recursive call 72: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:13,015 INFO L478 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 84 treesize of output 73 [2018-12-02 17:40:13,194 WARN L180 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2018-12-02 17:40:13,199 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:13,260 INFO L478 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 2 case distinctions, treesize of input 46 treesize of output 70 [2018-12-02 17:40:13,261 INFO L267 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:13,264 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-12-02 17:40:13,264 INFO L267 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:13,363 INFO L478 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 39 treesize of output 34 [2018-12-02 17:40:13,367 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:13,382 INFO L478 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 1 case distinctions, treesize of input 23 treesize of output 18 [2018-12-02 17:40:13,383 INFO L267 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 2 xjuncts. [2018-12-02 17:40:13,403 INFO L478 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 [2018-12-02 17:40:13,403 INFO L267 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:13,408 INFO L267 ElimStorePlain]: Start of recursive call 77: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:13,412 INFO L267 ElimStorePlain]: Start of recursive call 74: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:13,420 INFO L267 ElimStorePlain]: Start of recursive call 71: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:13,490 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 8 xjuncts. [2018-12-02 17:40:13,490 INFO L202 ElimStorePlain]: Needed 79 recursive calls to eliminate 4 variables, input treesize:609, output treesize:99 [2018-12-02 17:40:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-12-02 17:40:13,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 17:40:13,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 36 [2018-12-02 17:40:13,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-02 17:40:13,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-02 17:40:13,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1134, Unknown=2, NotChecked=0, Total=1260 [2018-12-02 17:40:13,795 INFO L87 Difference]: Start difference. First operand 125 states and 170 transitions. Second operand 36 states. [2018-12-02 17:40:14,518 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2018-12-02 17:40:15,029 WARN L180 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-12-02 17:40:15,480 WARN L180 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-12-02 17:40:15,770 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2018-12-02 17:40:16,055 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-12-02 17:40:16,899 WARN L180 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2018-12-02 17:40:21,546 WARN L180 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2018-12-02 17:40:22,656 WARN L180 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-12-02 17:40:47,539 WARN L180 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-12-02 17:40:47,789 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2018-12-02 17:40:50,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:40:50,390 INFO L93 Difference]: Finished difference Result 312 states and 428 transitions. [2018-12-02 17:40:50,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-02 17:40:50,390 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 49 [2018-12-02 17:40:50,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:40:50,391 INFO L225 Difference]: With dead ends: 312 [2018-12-02 17:40:50,391 INFO L226 Difference]: Without dead ends: 200 [2018-12-02 17:40:50,392 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 47.4s TimeCoverageRelationStatistics Valid=514, Invalid=4171, Unknown=7, NotChecked=0, Total=4692 [2018-12-02 17:40:50,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-12-02 17:40:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2018-12-02 17:40:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-12-02 17:40:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 249 transitions. [2018-12-02 17:40:50,416 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 249 transitions. Word has length 49 [2018-12-02 17:40:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:40:50,417 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 249 transitions. [2018-12-02 17:40:50,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-02 17:40:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 249 transitions. [2018-12-02 17:40:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-02 17:40:50,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:40:50,418 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:40:50,418 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:40:50,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:40:50,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1849569550, now seen corresponding path program 1 times [2018-12-02 17:40:50,418 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:40:50,418 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:40:50,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:40:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:40:50,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:40:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 17:40:50,517 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:40:50,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:40:50,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 17:40:50,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 17:40:50,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 17:40:50,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 17:40:50,519 INFO L87 Difference]: Start difference. First operand 183 states and 249 transitions. Second operand 8 states. [2018-12-02 17:40:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:40:50,574 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2018-12-02 17:40:50,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 17:40:50,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2018-12-02 17:40:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:40:50,576 INFO L225 Difference]: With dead ends: 227 [2018-12-02 17:40:50,576 INFO L226 Difference]: Without dead ends: 225 [2018-12-02 17:40:50,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-02 17:40:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-12-02 17:40:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 188. [2018-12-02 17:40:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2018-12-02 17:40:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 259 transitions. [2018-12-02 17:40:50,601 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 259 transitions. Word has length 50 [2018-12-02 17:40:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:40:50,601 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 259 transitions. [2018-12-02 17:40:50,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 17:40:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 259 transitions. [2018-12-02 17:40:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-02 17:40:50,602 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:40:50,602 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 1] [2018-12-02 17:40:50,602 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:40:50,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:40:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash -333626820, now seen corresponding path program 1 times [2018-12-02 17:40:50,603 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:40:50,603 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:40:50,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 17:40:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 17:40:50,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:40:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 17:40:50,656 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 17:40:50,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 17:40:50,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 17:40:50,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 17:40:50,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 17:40:50,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 17:40:50,659 INFO L87 Difference]: Start difference. First operand 188 states and 259 transitions. Second operand 5 states. [2018-12-02 17:40:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 17:40:50,686 INFO L93 Difference]: Finished difference Result 353 states and 479 transitions. [2018-12-02 17:40:50,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 17:40:50,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-12-02 17:40:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 17:40:50,688 INFO L225 Difference]: With dead ends: 353 [2018-12-02 17:40:50,688 INFO L226 Difference]: Without dead ends: 188 [2018-12-02 17:40:50,688 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 17:40:50,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-12-02 17:40:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2018-12-02 17:40:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-12-02 17:40:50,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 251 transitions. [2018-12-02 17:40:50,718 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 251 transitions. Word has length 56 [2018-12-02 17:40:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 17:40:50,719 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 251 transitions. [2018-12-02 17:40:50,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 17:40:50,719 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 251 transitions. [2018-12-02 17:40:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-02 17:40:50,719 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 17:40:50,720 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 17:40:50,720 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 17:40:50,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 17:40:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1038750923, now seen corresponding path program 2 times [2018-12-02 17:40:50,720 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-12-02 17:40:50,720 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_43ddd270-e1e3-4c02-81ed-d17933b3684d/bin-2019/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:40:50,734 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-12-02 17:40:50,824 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 17:40:50,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 17:40:50,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 17:40:51,427 WARN L180 SmtUtils]: Spent 579.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-12-02 17:40:51,482 INFO L478 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 31 treesize of output 31 [2018-12-02 17:40:51,489 INFO L478 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 [2018-12-02 17:40:51,501 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:51,507 INFO L478 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 [2018-12-02 17:40:51,507 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,539 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,600 INFO L478 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 30 treesize of output 31 [2018-12-02 17:40:51,604 INFO L478 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 [2018-12-02 17:40:51,605 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,626 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,662 INFO L478 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 38 treesize of output 36 [2018-12-02 17:40:51,669 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:40:51,678 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:51,683 INFO L478 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 32 treesize of output 36 [2018-12-02 17:40:51,683 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,708 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,768 INFO L478 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 30 treesize of output 26 [2018-12-02 17:40:51,773 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:51,775 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:51,775 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:51,781 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 39 [2018-12-02 17:40:51,781 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,795 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:51,811 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,002 INFO L478 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 38 treesize of output 36 [2018-12-02 17:40:52,006 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-12-02 17:40:52,011 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:52,012 INFO L478 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 32 treesize of output 36 [2018-12-02 17:40:52,012 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,027 INFO L267 ElimStorePlain]: Start of recursive call 13: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,046 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:52,047 INFO L478 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 30 treesize of output 33 [2018-12-02 17:40:52,051 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:52,053 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:52,053 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:52,054 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 42 [2018-12-02 17:40:52,054 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,063 INFO L267 ElimStorePlain]: Start of recursive call 15: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,069 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,088 INFO L478 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 31 treesize of output 31 [2018-12-02 17:40:52,092 INFO L478 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 [2018-12-02 17:40:52,097 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:52,097 INFO L478 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 [2018-12-02 17:40:52,097 INFO L267 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,106 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,128 INFO L478 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 30 treesize of output 31 [2018-12-02 17:40:52,130 INFO L478 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 [2018-12-02 17:40:52,131 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,140 INFO L267 ElimStorePlain]: Start of recursive call 20: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,148 INFO L267 ElimStorePlain]: Start of recursive call 17: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,203 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:52,204 INFO L202 ElimStorePlain]: Needed 21 recursive calls to eliminate 2 variables, input treesize:85, output treesize:109 [2018-12-02 17:40:52,351 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2018-12-02 17:40:52,728 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:52,728 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 116 [2018-12-02 17:40:52,735 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:52,736 INFO L701 Elim1Store]: detected not equals via solver [2018-12-02 17:40:52,736 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:52,737 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 101 [2018-12-02 17:40:52,737 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:52,764 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:53,117 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:53,145 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 119 treesize of output 124 [2018-12-02 17:40:53,150 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:53,150 INFO L478 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 68 [2018-12-02 17:40:53,151 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:53,196 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:40:53,419 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 144 treesize of output 124 [2018-12-02 17:40:53,423 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:40:53,426 INFO L478 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 123 treesize of output 98 [2018-12-02 17:40:53,426 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-12-02 17:40:53,509 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:53,708 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:40:53,708 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:233, output treesize:223 [2018-12-02 17:40:54,143 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 48 [2018-12-02 17:40:56,811 WARN L180 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 68 [2018-12-02 17:40:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-02 17:40:56,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 17:40:58,307 WARN L180 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2018-12-02 17:42:00,318 WARN L180 SmtUtils]: Spent 59.57 s on a formula simplification that was a NOOP. DAG size: 173 [2018-12-02 17:43:12,858 WARN L180 SmtUtils]: Spent 1.13 m on a formula simplification that was a NOOP. DAG size: 189 [2018-12-02 17:44:51,605 WARN L180 SmtUtils]: Spent 1.64 m on a formula simplification that was a NOOP. DAG size: 199 [2018-12-02 17:46:30,009 WARN L180 SmtUtils]: Spent 1.62 m on a formula simplification that was a NOOP. DAG size: 194 [2018-12-02 17:47:08,140 WARN L180 SmtUtils]: Spent 37.86 s on a formula simplification. DAG size of input: 170 DAG size of output: 118 [2018-12-02 17:47:08,160 INFO L478 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 310 treesize of output 249 [2018-12-02 17:47:08,381 WARN L180 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2018-12-02 17:47:08,390 INFO L478 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 149 treesize of output 137 [2018-12-02 17:47:08,397 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:08,404 INFO L478 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 137 treesize of output 128 [2018-12-02 17:47:08,405 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:08,434 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:47:08,492 INFO L478 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 123 treesize of output 112 [2018-12-02 17:47:08,689 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-12-02 17:47:08,693 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:09,447 INFO L478 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 88 [2018-12-02 17:47:09,448 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 4 xjuncts. [2018-12-02 17:47:09,453 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:09,619 INFO L478 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 59 treesize of output 74 [2018-12-02 17:47:09,620 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 4 xjuncts. [2018-12-02 17:47:13,862 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:13,867 INFO L478 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 76 treesize of output 71 [2018-12-02 17:47:13,872 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:13,886 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:13,907 INFO L478 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 23 treesize of output 23 [2018-12-02 17:47:13,907 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 2 xjuncts. [2018-12-02 17:47:13,947 INFO L478 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 7 treesize of output 3 [2018-12-02 17:47:13,947 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:13,969 INFO L267 ElimStorePlain]: Start of recursive call 8: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:47:13,992 INFO L478 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 62 treesize of output 56 [2018-12-02 17:47:14,157 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 43 [2018-12-02 17:47:14,160 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:14,208 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:14,216 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:14,240 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 53 [2018-12-02 17:47:14,240 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 4 xjuncts. [2018-12-02 17:47:15,980 INFO L267 ElimStorePlain]: Start of recursive call 11: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:47:16,004 INFO L478 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 60 treesize of output 56 [2018-12-02 17:47:24,175 WARN L180 SmtUtils]: Spent 8.17 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-12-02 17:47:24,181 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:24,282 INFO L303 Elim1Store]: Index analysis took 106 ms [2018-12-02 17:47:24,288 INFO L478 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 35 [2018-12-02 17:47:24,289 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 2 xjuncts. [2018-12-02 17:47:24,526 INFO L267 ElimStorePlain]: Start of recursive call 13: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-02 17:47:24,538 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:24,554 INFO L478 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 74 treesize of output 71 [2018-12-02 17:47:24,563 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:24,568 INFO L478 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 17 treesize of output 7 [2018-12-02 17:47:24,568 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:24,592 INFO L478 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 7 treesize of output 3 [2018-12-02 17:47:24,592 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:24,602 INFO L267 ElimStorePlain]: Start of recursive call 15: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:47:24,672 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-12-02 17:47:24,749 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 6 xjuncts. [2018-12-02 17:47:24,765 INFO L478 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 261 treesize of output 208 [2018-12-02 17:47:24,882 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 42 [2018-12-02 17:47:24,887 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 18 [2018-12-02 17:47:24,892 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:24,896 INFO L478 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 24 [2018-12-02 17:47:24,897 INFO L267 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:24,916 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:47:24,967 INFO L478 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 122 treesize of output 116 [2018-12-02 17:47:25,083 WARN L180 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-12-02 17:47:25,088 INFO L478 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 [2018-12-02 17:47:25,088 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,123 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:25,150 INFO L478 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 68 treesize of output 74 [2018-12-02 17:47:25,155 INFO L478 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 66 treesize of output 58 [2018-12-02 17:47:25,155 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,223 INFO L478 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 63 treesize of output 55 [2018-12-02 17:47:25,224 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,271 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:25,275 INFO L478 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 55 treesize of output 46 [2018-12-02 17:47:25,275 INFO L267 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,313 INFO L478 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 41 treesize of output 37 [2018-12-02 17:47:25,313 INFO L267 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,344 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:25,365 INFO L478 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 1 case distinctions, treesize of input 52 treesize of output 56 [2018-12-02 17:47:25,365 INFO L267 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 2 xjuncts. [2018-12-02 17:47:25,397 INFO L267 ElimStorePlain]: Start of recursive call 23: 5 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:47:25,443 INFO L478 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 45 treesize of output 54 [2018-12-02 17:47:25,448 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:25,452 INFO L478 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 41 treesize of output 30 [2018-12-02 17:47:25,452 INFO L267 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,584 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:25,601 INFO L478 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 44 [2018-12-02 17:47:25,602 INFO L267 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 2 xjuncts. [2018-12-02 17:47:25,762 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:25,765 INFO L478 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 41 treesize of output 30 [2018-12-02 17:47:25,765 INFO L267 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:25,899 INFO L478 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 25 treesize of output 21 [2018-12-02 17:47:25,899 INFO L267 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:26,018 INFO L478 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 18 treesize of output 10 [2018-12-02 17:47:26,018 INFO L267 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:26,129 INFO L478 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 31 treesize of output 19 [2018-12-02 17:47:26,129 INFO L267 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:26,131 INFO L478 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 25 treesize of output 17 [2018-12-02 17:47:26,132 INFO L267 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:26,244 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:26,341 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:26,348 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:26,359 INFO L303 Elim1Store]: Index analysis took 118 ms [2018-12-02 17:47:26,369 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 53 [2018-12-02 17:47:26,370 INFO L267 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 4 xjuncts. [2018-12-02 17:47:26,519 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:26,522 INFO L478 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2018-12-02 17:47:26,523 INFO L267 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:26,570 INFO L267 ElimStorePlain]: Start of recursive call 29: 8 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-12-02 17:47:26,615 INFO L267 ElimStorePlain]: Start of recursive call 21: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:47:26,671 INFO L267 ElimStorePlain]: Start of recursive call 18: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-12-02 17:47:26,824 INFO L303 Elim1Store]: Index analysis took 153 ms [2018-12-02 17:47:27,528 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 481 treesize of output 379 [2018-12-02 17:47:37,956 WARN L180 SmtUtils]: Spent 10.43 s on a formula simplification. DAG size of input: 291 DAG size of output: 140 [2018-12-02 17:47:37,964 INFO L478 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 212 treesize of output 209 [2018-12-02 17:47:37,970 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:37,975 INFO L478 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 103 treesize of output 103 [2018-12-02 17:47:37,975 INFO L267 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:38,033 INFO L267 ElimStorePlain]: Start of recursive call 40: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-02 17:47:49,993 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 267 treesize of output 243 [2018-12-02 17:47:50,012 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:50,045 INFO L478 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 137 treesize of output 132 [2018-12-02 17:47:50,046 INFO L267 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2018-12-02 17:47:50,175 INFO L683 Elim1Store]: detected equality via solver [2018-12-02 17:47:50,549 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2018-12-02 17:47:50,550 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_arrayElimArr_77 input size 67 context size 67 output size 67 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.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:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:456) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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) [2018-12-02 17:47:50,558 INFO L168 Benchmark]: Toolchain (without parser) took 550703.53 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 251.7 MB). Free memory was 938.0 MB in the beginning and 838.8 MB in the end (delta: 99.2 MB). Peak memory consumption was 397.5 MB. Max. memory is 11.5 GB. [2018-12-02 17:47:50,558 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 17:47:50,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2018-12-02 17:47:50,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 17:47:50,559 INFO L168 Benchmark]: Boogie Preprocessor took 21.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-02 17:47:50,559 INFO L168 Benchmark]: RCFGBuilder took 234.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-12-02 17:47:50,559 INFO L168 Benchmark]: TraceAbstraction took 550152.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 115.9 MB). Free memory was 1.1 GB in the beginning and 838.8 MB in the end (delta: 245.8 MB). Peak memory consumption was 408.3 MB. Max. memory is 11.5 GB. [2018-12-02 17:47:50,560 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 938.0 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 234.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 550152.20 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 115.9 MB). Free memory was 1.1 GB in the beginning and 838.8 MB in the end (delta: 245.8 MB). Peak memory consumption was 408.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: v_arrayElimArr_77 input size 67 context size 67 output size 67 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: v_arrayElimArr_77 input size 67 context size 67 output size 67: 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...