./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 84264ed0f1ef4901cce13c60e1561d0af5bb32e5 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 84264ed0f1ef4901cce13c60e1561d0af5bb32e5 ............................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: 1 --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:08:04,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:08:04,856 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:08:04,865 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:08:04,865 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:08:04,866 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:08:04,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:08:04,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:08:04,869 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:08:04,869 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:08:04,870 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:08:04,870 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:08:04,871 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:08:04,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:08:04,872 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:08:04,873 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:08:04,873 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:08:04,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:08:04,876 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:08:04,877 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:08:04,878 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:08:04,879 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:08:04,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:08:04,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:08:04,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:08:04,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:08:04,882 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:08:04,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:08:04,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:08:04,884 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:08:04,884 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:08:04,885 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:08:04,885 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:08:04,885 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:08:04,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:08:04,886 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:08:04,887 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 03:08:04,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:08:04,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:08:04,898 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:08:04,898 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 03:08:04,898 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 03:08:04,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 03:08:04,898 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 03:08:04,899 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:08:04,899 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:08:04,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:08:04,899 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:08:04,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:08:04,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:08:04,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:08:04,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:08:04,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:08:04,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:08:04,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:08:04,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:08:04,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:08:04,901 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 03:08:04,901 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:08:04,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:08:04,902 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_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 -> 84264ed0f1ef4901cce13c60e1561d0af5bb32e5 [2018-11-10 03:08:04,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:08:04,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:08:04,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:08:04,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:08:04,934 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:08:04,935 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/../../sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c [2018-11-10 03:08:04,970 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/ef7952e48/11611d8b93d44ca3932d8f2889667ab9/FLAG88e1000be [2018-11-10 03:08:05,372 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:08:05,372 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c [2018-11-10 03:08:05,376 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/ef7952e48/11611d8b93d44ca3932d8f2889667ab9/FLAG88e1000be [2018-11-10 03:08:05,384 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/ef7952e48/11611d8b93d44ca3932d8f2889667ab9 [2018-11-10 03:08:05,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:08:05,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 03:08:05,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:08:05,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:08:05,389 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:08:05,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dabe3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05, skipping insertion in model container [2018-11-10 03:08:05,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:08:05,410 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:08:05,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:08:05,518 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:08:05,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:08:05,540 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:08:05,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05 WrapperNode [2018-11-10 03:08:05,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:08:05,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:08:05,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:08:05,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:08:05,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... [2018-11-10 03:08:05,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:08:05,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:08:05,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:08:05,564 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:08:05,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:05,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:08:05,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:08:05,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:08:05,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:08:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 03:08:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:08:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 03:08:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 03:08:05,776 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:08:05,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:05 BoogieIcfgContainer [2018-11-10 03:08:05,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:08:05,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:08:05,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:08:05,779 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:08:05,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:08:05" (1/3) ... [2018-11-10 03:08:05,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78929b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:05, skipping insertion in model container [2018-11-10 03:08:05,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:08:05" (2/3) ... [2018-11-10 03:08:05,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78929b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:08:05, skipping insertion in model container [2018-11-10 03:08:05,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:08:05" (3/3) ... [2018-11-10 03:08:05,782 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum_m2_true-unreach-call.c [2018-11-10 03:08:05,787 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:08:05,791 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:08:05,801 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:08:05,818 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:08:05,818 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:08:05,818 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:08:05,818 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:08:05,818 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:08:05,819 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:08:05,819 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:08:05,819 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:08:05,819 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:08:05,829 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2018-11-10 03:08:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 03:08:05,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:05,834 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:05,835 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:05,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:05,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1261941491, now seen corresponding path program 1 times [2018-11-10 03:08:05,840 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:05,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:05,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:05,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:05,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:05,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:05,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:08:05,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:08:05,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:08:05,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:08:05,941 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2018-11-10 03:08:05,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:05,959 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2018-11-10 03:08:05,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:08:05,960 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-10 03:08:05,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:05,964 INFO L225 Difference]: With dead ends: 78 [2018-11-10 03:08:05,965 INFO L226 Difference]: Without dead ends: 37 [2018-11-10 03:08:05,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:08:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-10 03:08:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-10 03:08:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 03:08:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-11-10 03:08:05,988 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 20 [2018-11-10 03:08:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:05,988 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-11-10 03:08:05,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:08:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-11-10 03:08:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 03:08:05,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:05,989 INFO L375 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] [2018-11-10 03:08:05,989 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:05,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash 192080921, now seen corresponding path program 1 times [2018-11-10 03:08:05,990 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:05,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:05,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:05,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:05,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:06,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:06,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:08:06,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:08:06,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:08:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:08:06,065 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-11-10 03:08:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:06,126 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2018-11-10 03:08:06,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:08:06,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-10 03:08:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:06,128 INFO L225 Difference]: With dead ends: 61 [2018-11-10 03:08:06,128 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 03:08:06,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:08:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 03:08:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2018-11-10 03:08:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 03:08:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-11-10 03:08:06,134 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 24 [2018-11-10 03:08:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:06,134 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-11-10 03:08:06,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:08:06,135 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-11-10 03:08:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 03:08:06,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:06,136 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:06,136 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:06,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:06,136 INFO L82 PathProgramCache]: Analyzing trace with hash -965139401, now seen corresponding path program 1 times [2018-11-10 03:08:06,137 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:06,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:06,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:06,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 03:08:06,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:08:06,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:08:06,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:08:06,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:08:06,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:08:06,193 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 4 states. [2018-11-10 03:08:06,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:06,256 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2018-11-10 03:08:06,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:08:06,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-11-10 03:08:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:06,257 INFO L225 Difference]: With dead ends: 88 [2018-11-10 03:08:06,257 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 03:08:06,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:08:06,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 03:08:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2018-11-10 03:08:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 03:08:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-10 03:08:06,261 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 29 [2018-11-10 03:08:06,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:06,261 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-10 03:08:06,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:08:06,261 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-10 03:08:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-10 03:08:06,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:06,262 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:06,262 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:06,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1561832289, now seen corresponding path program 1 times [2018-11-10 03:08:06,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:06,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:06,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:06,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:08:06,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:06,311 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:06,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:06,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:08:06,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:06,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-10 03:08:06,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 03:08:06,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 03:08:06,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-10 03:08:06,422 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 7 states. [2018-11-10 03:08:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:06,527 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2018-11-10 03:08:06,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 03:08:06,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2018-11-10 03:08:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:06,528 INFO L225 Difference]: With dead ends: 106 [2018-11-10 03:08:06,529 INFO L226 Difference]: Without dead ends: 77 [2018-11-10 03:08:06,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:08:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-10 03:08:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2018-11-10 03:08:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-10 03:08:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-11-10 03:08:06,534 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 44 [2018-11-10 03:08:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:06,534 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-11-10 03:08:06,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 03:08:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-11-10 03:08:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 03:08:06,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:06,535 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:06,535 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:06,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:06,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1855990617, now seen corresponding path program 2 times [2018-11-10 03:08:06,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:06,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:06,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:06,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:08,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:08,344 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:08,350 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:08:08,378 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:08:08,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:08,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:09,004 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-10 03:08:09,006 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-10 03:08:09,006 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:08:09,008 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:08:09,008 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:08:09,009 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-11-10 03:08:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:09,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:09,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 27] total 61 [2018-11-10 03:08:09,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-11-10 03:08:09,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-11-10 03:08:09,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=3346, Unknown=0, NotChecked=0, Total=3660 [2018-11-10 03:08:09,122 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 61 states. [2018-11-10 03:08:11,191 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2018-11-10 03:08:12,087 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2018-11-10 03:08:12,927 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2018-11-10 03:08:13,282 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2018-11-10 03:08:13,556 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2018-11-10 03:08:15,466 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-11-10 03:08:16,185 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2018-11-10 03:08:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:16,434 INFO L93 Difference]: Finished difference Result 196 states and 209 transitions. [2018-11-10 03:08:16,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-11-10 03:08:16,435 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 64 [2018-11-10 03:08:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:16,437 INFO L225 Difference]: With dead ends: 196 [2018-11-10 03:08:16,437 INFO L226 Difference]: Without dead ends: 190 [2018-11-10 03:08:16,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5907 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=2401, Invalid=15959, Unknown=0, NotChecked=0, Total=18360 [2018-11-10 03:08:16,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-11-10 03:08:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 138. [2018-11-10 03:08:16,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-11-10 03:08:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2018-11-10 03:08:16,458 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 64 [2018-11-10 03:08:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:16,458 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2018-11-10 03:08:16,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-11-10 03:08:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2018-11-10 03:08:16,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-10 03:08:16,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:16,459 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:16,459 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:16,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:16,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1173449975, now seen corresponding path program 3 times [2018-11-10 03:08:16,460 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:16,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:16,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:16,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:16,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 03:08:16,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:16,526 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:16,536 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:08:16,558 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 03:08:16,558 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:16,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 03:08:16,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:16,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-11-10 03:08:16,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 03:08:16,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 03:08:16,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-11-10 03:08:16,637 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand 13 states. [2018-11-10 03:08:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:16,810 INFO L93 Difference]: Finished difference Result 262 states and 280 transitions. [2018-11-10 03:08:16,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 03:08:16,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2018-11-10 03:08:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:16,813 INFO L225 Difference]: With dead ends: 262 [2018-11-10 03:08:16,813 INFO L226 Difference]: Without dead ends: 145 [2018-11-10 03:08:16,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-11-10 03:08:16,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-11-10 03:08:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2018-11-10 03:08:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-11-10 03:08:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2018-11-10 03:08:16,828 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 69 [2018-11-10 03:08:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:16,828 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2018-11-10 03:08:16,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 03:08:16,828 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2018-11-10 03:08:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-10 03:08:16,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:16,829 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-10 03:08:16,829 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:16,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:16,830 INFO L82 PathProgramCache]: Analyzing trace with hash 2069414684, now seen corresponding path program 4 times [2018-11-10 03:08:16,830 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:16,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:16,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:16,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:16,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 03:08:16,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:16,923 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:16,932 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:08:16,951 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:08:16,951 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:16,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 03:08:17,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:17,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-11-10 03:08:17,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 03:08:17,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 03:08:17,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-10 03:08:17,023 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand 13 states. [2018-11-10 03:08:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:17,150 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2018-11-10 03:08:17,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 03:08:17,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 74 [2018-11-10 03:08:17,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:17,152 INFO L225 Difference]: With dead ends: 143 [2018-11-10 03:08:17,152 INFO L226 Difference]: Without dead ends: 112 [2018-11-10 03:08:17,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2018-11-10 03:08:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-10 03:08:17,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 85. [2018-11-10 03:08:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-10 03:08:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2018-11-10 03:08:17,162 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 74 [2018-11-10 03:08:17,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:17,162 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2018-11-10 03:08:17,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 03:08:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2018-11-10 03:08:17,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-10 03:08:17,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:17,164 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:17,164 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:17,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:17,164 INFO L82 PathProgramCache]: Analyzing trace with hash 548670687, now seen corresponding path program 5 times [2018-11-10 03:08:17,164 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:17,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:17,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:17,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:17,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:19,485 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:19,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:19,486 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:19,492 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 03:08:19,514 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-11-10 03:08:19,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:19,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:21,648 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 44 [2018-11-10 03:08:21,658 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:21,665 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:08:21,666 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:21,682 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:08:21,685 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 37 [2018-11-10 03:08:21,686 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:08:21,691 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:08:21,695 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:08:21,695 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:64, output treesize:7 [2018-11-10 03:08:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:21,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:21,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 39] total 77 [2018-11-10 03:08:21,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-11-10 03:08:21,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-11-10 03:08:21,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=5568, Unknown=0, NotChecked=0, Total=5852 [2018-11-10 03:08:21,872 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 77 states. [2018-11-10 03:08:23,191 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 104 [2018-11-10 03:08:25,163 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 104 [2018-11-10 03:08:25,631 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 105 [2018-11-10 03:08:27,102 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 92 [2018-11-10 03:08:29,376 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 99 [2018-11-10 03:08:30,900 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 89 [2018-11-10 03:08:32,486 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2018-11-10 03:08:34,524 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 104 [2018-11-10 03:08:35,073 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 105 [2018-11-10 03:08:35,466 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 63 [2018-11-10 03:08:36,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:36,241 INFO L93 Difference]: Finished difference Result 234 states and 250 transitions. [2018-11-10 03:08:36,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-11-10 03:08:36,241 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 84 [2018-11-10 03:08:36,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:36,242 INFO L225 Difference]: With dead ends: 234 [2018-11-10 03:08:36,242 INFO L226 Difference]: Without dead ends: 228 [2018-11-10 03:08:36,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 50 SyntacticMatches, 11 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7000 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=2989, Invalid=23093, Unknown=0, NotChecked=0, Total=26082 [2018-11-10 03:08:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-11-10 03:08:36,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 191. [2018-11-10 03:08:36,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-11-10 03:08:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 203 transitions. [2018-11-10 03:08:36,260 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 203 transitions. Word has length 84 [2018-11-10 03:08:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:36,260 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 203 transitions. [2018-11-10 03:08:36,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-11-10 03:08:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 203 transitions. [2018-11-10 03:08:36,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-10 03:08:36,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:36,261 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:36,262 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:36,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:36,262 INFO L82 PathProgramCache]: Analyzing trace with hash 245386042, now seen corresponding path program 6 times [2018-11-10 03:08:36,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:36,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:36,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:36,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:36,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-10 03:08:36,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:36,352 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:36,359 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 03:08:36,375 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-11-10 03:08:36,375 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:36,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-10 03:08:36,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:36,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-11-10 03:08:36,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 03:08:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 03:08:36,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-11-10 03:08:36,443 INFO L87 Difference]: Start difference. First operand 191 states and 203 transitions. Second operand 16 states. [2018-11-10 03:08:36,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:36,683 INFO L93 Difference]: Finished difference Result 328 states and 345 transitions. [2018-11-10 03:08:36,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 03:08:36,683 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 89 [2018-11-10 03:08:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:36,684 INFO L225 Difference]: With dead ends: 328 [2018-11-10 03:08:36,684 INFO L226 Difference]: Without dead ends: 265 [2018-11-10 03:08:36,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2018-11-10 03:08:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-11-10 03:08:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 219. [2018-11-10 03:08:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-11-10 03:08:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 230 transitions. [2018-11-10 03:08:36,701 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 230 transitions. Word has length 89 [2018-11-10 03:08:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:36,702 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 230 transitions. [2018-11-10 03:08:36,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 03:08:36,702 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 230 transitions. [2018-11-10 03:08:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-10 03:08:36,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:36,703 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:36,703 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:36,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1168051215, now seen corresponding path program 7 times [2018-11-10 03:08:36,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:36,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:36,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:36,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:08:36,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:36,800 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 65 proven. 38 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-10 03:08:36,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:36,800 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 [2018-11-10 03:08:36,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:36,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 72 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-10 03:08:36,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:36,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2018-11-10 03:08:36,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 03:08:36,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 03:08:36,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-11-10 03:08:36,900 INFO L87 Difference]: Start difference. First operand 219 states and 230 transitions. Second operand 17 states. [2018-11-10 03:08:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:08:37,029 INFO L93 Difference]: Finished difference Result 304 states and 317 transitions. [2018-11-10 03:08:37,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 03:08:37,029 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 99 [2018-11-10 03:08:37,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:08:37,029 INFO L225 Difference]: With dead ends: 304 [2018-11-10 03:08:37,029 INFO L226 Difference]: Without dead ends: 117 [2018-11-10 03:08:37,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-10 03:08:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-10 03:08:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2018-11-10 03:08:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-11-10 03:08:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2018-11-10 03:08:37,039 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 99 [2018-11-10 03:08:37,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:08:37,040 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2018-11-10 03:08:37,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 03:08:37,040 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2018-11-10 03:08:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-10 03:08:37,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:08:37,041 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:08:37,041 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:08:37,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:08:37,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1111303527, now seen corresponding path program 8 times [2018-11-10 03:08:37,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:08:37,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:08:37,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:37,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:08:37,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:08:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:08:40,870 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:40,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:08:40,870 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:08:40,875 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:08:40,892 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:08:40,892 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:08:40,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:08:44,707 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2018-11-10 03:08:44,710 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:44,711 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:44,711 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:44,712 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:08:44,712 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:44,713 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:08:44,713 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:08:44,714 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:08:44,722 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 80 [2018-11-10 03:08:44,723 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:08:44,732 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:08:44,737 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:08:44,737 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:92, output treesize:7 [2018-11-10 03:08:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:08:44,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:08:44,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 51] total 97 [2018-11-10 03:08:44,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-11-10 03:08:44,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-11-10 03:08:44,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=8939, Unknown=0, NotChecked=0, Total=9312 [2018-11-10 03:08:44,932 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 97 states. [2018-11-10 03:08:47,038 WARN L179 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 143 [2018-11-10 03:08:47,956 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 41 [2018-11-10 03:08:48,432 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 124 [2018-11-10 03:08:50,479 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 41 [2018-11-10 03:08:50,958 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 141 [2018-11-10 03:08:51,204 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2018-11-10 03:08:51,922 WARN L179 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 146 [2018-11-10 03:08:52,159 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 86 [2018-11-10 03:08:52,669 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 88 [2018-11-10 03:08:53,569 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 42 [2018-11-10 03:08:54,195 WARN L179 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 133 [2018-11-10 03:08:54,772 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 48 [2018-11-10 03:08:55,621 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 53 [2018-11-10 03:08:56,159 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 46 [2018-11-10 03:08:56,424 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 42 [2018-11-10 03:08:56,681 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 53 [2018-11-10 03:08:57,141 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 46 [2018-11-10 03:08:57,411 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 57 [2018-11-10 03:08:57,889 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 56 [2018-11-10 03:08:58,387 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 51 [2018-11-10 03:08:58,667 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 44 [2018-11-10 03:08:58,934 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 55 [2018-11-10 03:08:59,406 WARN L179 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 133 [2018-11-10 03:08:59,666 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 54 [2018-11-10 03:08:59,912 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2018-11-10 03:09:00,174 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 48 [2018-11-10 03:09:00,450 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2018-11-10 03:09:00,770 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 95 [2018-11-10 03:09:01,045 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 55 [2018-11-10 03:09:01,807 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 128 [2018-11-10 03:09:02,459 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 53 [2018-11-10 03:09:02,748 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 57 [2018-11-10 03:09:03,820 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 89 [2018-11-10 03:09:04,213 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 92 [2018-11-10 03:09:04,637 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2018-11-10 03:09:05,119 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 67 [2018-11-10 03:09:06,068 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2018-11-10 03:09:06,820 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 57 [2018-11-10 03:09:07,584 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 55 [2018-11-10 03:09:08,151 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 114 [2018-11-10 03:09:08,485 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 51 [2018-11-10 03:09:08,926 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 90 [2018-11-10 03:09:09,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:09,386 INFO L93 Difference]: Finished difference Result 293 states and 312 transitions. [2018-11-10 03:09:09,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-11-10 03:09:09,386 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 104 [2018-11-10 03:09:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:09,387 INFO L225 Difference]: With dead ends: 293 [2018-11-10 03:09:09,387 INFO L226 Difference]: Without dead ends: 287 [2018-11-10 03:09:09,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 59 SyntacticMatches, 14 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11632 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=4371, Invalid=37449, Unknown=0, NotChecked=0, Total=41820 [2018-11-10 03:09:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-11-10 03:09:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 241. [2018-11-10 03:09:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-11-10 03:09:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 255 transitions. [2018-11-10 03:09:09,415 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 255 transitions. Word has length 104 [2018-11-10 03:09:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:09,415 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 255 transitions. [2018-11-10 03:09:09,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-11-10 03:09:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 255 transitions. [2018-11-10 03:09:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-10 03:09:09,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:09,416 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:09,416 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:09,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:09,416 INFO L82 PathProgramCache]: Analyzing trace with hash 693781943, now seen corresponding path program 9 times [2018-11-10 03:09:09,416 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:09:09,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:09:09,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:09,417 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:09:09,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 43 proven. 55 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-10 03:09:09,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:09,488 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:09,493 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:09:09,514 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-10 03:09:09,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:09,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 60 proven. 38 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-10 03:09:09,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:09:09,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2018-11-10 03:09:09,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 03:09:09,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 03:09:09,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-11-10 03:09:09,581 INFO L87 Difference]: Start difference. First operand 241 states and 255 transitions. Second operand 19 states. [2018-11-10 03:09:09,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:09,749 INFO L93 Difference]: Finished difference Result 423 states and 444 transitions. [2018-11-10 03:09:09,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 03:09:09,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-11-10 03:09:09,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:09,750 INFO L225 Difference]: With dead ends: 423 [2018-11-10 03:09:09,750 INFO L226 Difference]: Without dead ends: 190 [2018-11-10 03:09:09,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-11-10 03:09:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-11-10 03:09:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 166. [2018-11-10 03:09:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-11-10 03:09:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 171 transitions. [2018-11-10 03:09:09,765 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 171 transitions. Word has length 109 [2018-11-10 03:09:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:09,765 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 171 transitions. [2018-11-10 03:09:09,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 03:09:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 171 transitions. [2018-11-10 03:09:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-10 03:09:09,766 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:09,767 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:09,767 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:09,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:09,767 INFO L82 PathProgramCache]: Analyzing trace with hash 58940788, now seen corresponding path program 10 times [2018-11-10 03:09:09,767 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:09:09,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:09:09,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:09,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:09:09,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 21 proven. 77 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-10 03:09:09,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:09,852 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:09,857 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:09:09,872 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:09:09,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:09,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 38 proven. 60 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-10 03:09:09,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:09:09,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2018-11-10 03:09:09,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 03:09:09,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 03:09:09,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2018-11-10 03:09:09,937 INFO L87 Difference]: Start difference. First operand 166 states and 171 transitions. Second operand 19 states. [2018-11-10 03:09:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:10,154 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2018-11-10 03:09:10,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 03:09:10,155 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2018-11-10 03:09:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:10,155 INFO L225 Difference]: With dead ends: 185 [2018-11-10 03:09:10,155 INFO L226 Difference]: Without dead ends: 134 [2018-11-10 03:09:10,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2018-11-10 03:09:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-11-10 03:09:10,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2018-11-10 03:09:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-11-10 03:09:10,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 128 transitions. [2018-11-10 03:09:10,165 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 128 transitions. Word has length 109 [2018-11-10 03:09:10,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:10,165 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 128 transitions. [2018-11-10 03:09:10,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 03:09:10,165 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 128 transitions. [2018-11-10 03:09:10,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-10 03:09:10,166 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:10,166 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:10,167 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:10,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:10,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1246620385, now seen corresponding path program 11 times [2018-11-10 03:09:10,167 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:09:10,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:09:10,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:10,168 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:09:10,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:15,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:15,153 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:15,158 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 03:09:15,182 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-10 03:09:15,182 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:15,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:19,839 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 84 [2018-11-10 03:09:19,842 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,842 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,843 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:09:19,844 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,844 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,845 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,846 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:09:19,846 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,847 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,847 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:09:19,848 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:09:19,848 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:09:19,862 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 121 [2018-11-10 03:09:19,863 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:09:19,875 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:09:19,879 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:09:19,879 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:120, output treesize:7 [2018-11-10 03:09:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:09:20,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:09:20,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 63] total 119 [2018-11-10 03:09:20,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-11-10 03:09:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-11-10 03:09:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=13332, Unknown=0, NotChecked=0, Total=14042 [2018-11-10 03:09:20,061 INFO L87 Difference]: Start difference. First operand 125 states and 128 transitions. Second operand 119 states. [2018-11-10 03:09:23,101 WARN L179 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 157 [2018-11-10 03:09:27,377 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 157 [2018-11-10 03:09:28,256 WARN L179 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 158 [2018-11-10 03:09:28,592 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 103 [2018-11-10 03:09:29,190 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 109 [2018-11-10 03:09:30,711 WARN L179 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 134 [2018-11-10 03:09:33,454 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 72 [2018-11-10 03:09:34,036 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 71 [2018-11-10 03:09:34,402 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 43 [2018-11-10 03:09:35,123 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 45 [2018-11-10 03:09:35,483 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 69 [2018-11-10 03:09:35,792 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 48 [2018-11-10 03:09:36,105 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 68 [2018-11-10 03:09:36,752 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 68 [2018-11-10 03:09:37,487 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 70 [2018-11-10 03:09:38,061 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 151 [2018-11-10 03:09:38,408 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 59 [2018-11-10 03:09:39,337 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 107 [2018-11-10 03:09:39,736 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 110 [2018-11-10 03:09:40,058 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 71 [2018-11-10 03:09:40,423 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 96 [2018-11-10 03:09:41,058 WARN L179 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 126 [2018-11-10 03:09:41,381 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2018-11-10 03:09:43,052 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2018-11-10 03:09:43,387 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 103 [2018-11-10 03:09:43,651 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2018-11-10 03:09:44,061 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 109 [2018-11-10 03:09:44,675 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 114 [2018-11-10 03:09:46,513 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2018-11-10 03:09:46,997 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2018-11-10 03:09:47,789 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 74 [2018-11-10 03:09:48,532 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 44 [2018-11-10 03:09:49,217 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 49 [2018-11-10 03:09:49,851 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 47 [2018-11-10 03:09:50,923 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 73 [2018-11-10 03:09:51,513 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 156 [2018-11-10 03:09:52,440 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 157 [2018-11-10 03:09:52,785 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 107 [2018-11-10 03:09:53,343 WARN L179 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 123 [2018-11-10 03:09:53,653 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 72 [2018-11-10 03:09:54,581 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 119 [2018-11-10 03:09:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:55,231 INFO L93 Difference]: Finished difference Result 345 states and 364 transitions. [2018-11-10 03:09:55,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-11-10 03:09:55,231 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 124 [2018-11-10 03:09:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:55,232 INFO L225 Difference]: With dead ends: 345 [2018-11-10 03:09:55,232 INFO L226 Difference]: Without dead ends: 339 [2018-11-10 03:09:55,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 68 SyntacticMatches, 14 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17212 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=5778, Invalid=52062, Unknown=0, NotChecked=0, Total=57840 [2018-11-10 03:09:55,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-11-10 03:09:55,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 276. [2018-11-10 03:09:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2018-11-10 03:09:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 289 transitions. [2018-11-10 03:09:55,254 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 289 transitions. Word has length 124 [2018-11-10 03:09:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:55,255 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 289 transitions. [2018-11-10 03:09:55,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-11-10 03:09:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 289 transitions. [2018-11-10 03:09:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-10 03:09:55,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:55,256 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:55,256 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:55,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:55,256 INFO L82 PathProgramCache]: Analyzing trace with hash 251108474, now seen corresponding path program 12 times [2018-11-10 03:09:55,256 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:09:55,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:09:55,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:55,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:09:55,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 38 proven. 109 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-10 03:09:55,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:55,356 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:55,364 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 03:09:55,388 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-10 03:09:55,388 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:09:55,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 60 proven. 87 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-11-10 03:09:55,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:09:55,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2018-11-10 03:09:55,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 03:09:55,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 03:09:55,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2018-11-10 03:09:55,477 INFO L87 Difference]: Start difference. First operand 276 states and 289 transitions. Second operand 22 states. [2018-11-10 03:09:55,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:55,929 INFO L93 Difference]: Finished difference Result 441 states and 458 transitions. [2018-11-10 03:09:55,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-10 03:09:55,931 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 129 [2018-11-10 03:09:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:55,932 INFO L225 Difference]: With dead ends: 441 [2018-11-10 03:09:55,932 INFO L226 Difference]: Without dead ends: 349 [2018-11-10 03:09:55,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 03:09:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-11-10 03:09:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 286. [2018-11-10 03:09:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-11-10 03:09:55,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 298 transitions. [2018-11-10 03:09:55,954 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 298 transitions. Word has length 129 [2018-11-10 03:09:55,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:55,955 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 298 transitions. [2018-11-10 03:09:55,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 03:09:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 298 transitions. [2018-11-10 03:09:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-10 03:09:55,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:55,956 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:55,956 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:55,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash -783617476, now seen corresponding path program 13 times [2018-11-10 03:09:55,956 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:09:55,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:09:55,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:55,957 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:09:55,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 65 proven. 82 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-11-10 03:09:56,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:09:56,049 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:09:56,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:09:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:09:56,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:09:56,175 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2018-11-10 03:09:56,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:09:56,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2018-11-10 03:09:56,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 03:09:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 03:09:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2018-11-10 03:09:56,192 INFO L87 Difference]: Start difference. First operand 286 states and 298 transitions. Second operand 22 states. [2018-11-10 03:09:56,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:09:56,423 INFO L93 Difference]: Finished difference Result 401 states and 415 transitions. [2018-11-10 03:09:56,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 03:09:56,423 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 144 [2018-11-10 03:09:56,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:09:56,424 INFO L225 Difference]: With dead ends: 401 [2018-11-10 03:09:56,424 INFO L226 Difference]: Without dead ends: 157 [2018-11-10 03:09:56,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2018-11-10 03:09:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-10 03:09:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 145. [2018-11-10 03:09:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-11-10 03:09:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 148 transitions. [2018-11-10 03:09:56,436 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 148 transitions. Word has length 144 [2018-11-10 03:09:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:09:56,436 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 148 transitions. [2018-11-10 03:09:56,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 03:09:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 148 transitions. [2018-11-10 03:09:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-10 03:09:56,437 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:09:56,437 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:09:56,437 INFO L424 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:09:56,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:09:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash -67962407, now seen corresponding path program 14 times [2018-11-10 03:09:56,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:09:56,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:09:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:56,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:09:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:09:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:10:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:10:03,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:10:03,397 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:10:03,402 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:10:03,425 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:10:03,426 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:10:03,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:10:12,754 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 104 [2018-11-10 03:10:12,756 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,758 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,759 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,759 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,762 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,763 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:10:12,763 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,764 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,765 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,765 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,766 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:10:12,766 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,767 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,767 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,768 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:10:12,768 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,769 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:10:12,769 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:10:12,770 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:10:12,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 14 disjoint index pairs (out of 45 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 178 [2018-11-10 03:10:12,794 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:10:12,810 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:10:12,813 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:10:12,813 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:148, output treesize:7 [2018-11-10 03:10:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 0 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:10:13,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:10:13,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 75] total 139 [2018-11-10 03:10:13,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-11-10 03:10:13,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-11-10 03:10:13,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=18647, Unknown=0, NotChecked=0, Total=19182 [2018-11-10 03:10:13,144 INFO L87 Difference]: Start difference. First operand 145 states and 148 transitions. Second operand 139 states. [2018-11-10 03:10:17,705 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 261 DAG size of output: 206 [2018-11-10 03:10:18,326 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 48 [2018-11-10 03:10:18,895 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 51 [2018-11-10 03:10:19,338 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 48 [2018-11-10 03:10:20,641 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 219 DAG size of output: 196 [2018-11-10 03:10:21,187 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 46 [2018-11-10 03:10:21,702 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 50 [2018-11-10 03:10:22,171 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 48 [2018-11-10 03:10:22,650 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 45 [2018-11-10 03:10:23,134 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 50 [2018-11-10 03:10:23,570 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 48 [2018-11-10 03:10:24,027 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 50 [2018-11-10 03:10:24,527 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 54 [2018-11-10 03:10:24,978 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 52 [2018-11-10 03:10:25,443 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 50 [2018-11-10 03:10:25,925 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 55 [2018-11-10 03:10:26,375 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2018-11-10 03:10:26,835 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 51 [2018-11-10 03:10:27,315 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 56 [2018-11-10 03:10:28,329 WARN L179 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 202 [2018-11-10 03:10:28,828 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 131 [2018-11-10 03:10:29,940 WARN L179 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 203 [2018-11-10 03:10:30,442 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 135 [2018-11-10 03:10:30,907 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 58 [2018-11-10 03:10:31,427 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 134 [2018-11-10 03:10:31,759 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 104 [2018-11-10 03:10:32,026 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2018-11-10 03:10:32,525 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 91 [2018-11-10 03:10:32,983 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 50 [2018-11-10 03:10:34,267 WARN L179 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 185 [2018-11-10 03:10:34,923 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 58 [2018-11-10 03:10:35,437 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 59 [2018-11-10 03:10:35,665 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 93 [2018-11-10 03:10:36,579 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 62 [2018-11-10 03:10:37,072 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 60 [2018-11-10 03:10:37,540 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 61 [2018-11-10 03:10:38,014 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 55 [2018-11-10 03:10:38,635 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 52 [2018-11-10 03:10:39,118 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 65 [2018-11-10 03:10:40,140 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 57 [2018-11-10 03:10:40,640 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 69 [2018-11-10 03:10:41,095 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 56 [2018-11-10 03:10:41,576 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 68 [2018-11-10 03:10:42,143 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 52 [2018-11-10 03:10:42,669 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 61 [2018-11-10 03:10:43,573 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 56 [2018-11-10 03:10:44,091 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 66 [2018-11-10 03:10:44,538 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 55 [2018-11-10 03:10:45,037 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 65 [2018-11-10 03:10:45,489 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 49 [2018-11-10 03:10:46,001 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 64 [2018-11-10 03:10:46,747 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 54 [2018-11-10 03:10:47,252 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 68 [2018-11-10 03:10:47,696 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 53 [2018-11-10 03:10:48,200 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 67 [2018-11-10 03:10:48,643 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 49 [2018-11-10 03:10:49,140 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 62 [2018-11-10 03:10:49,609 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 51 [2018-11-10 03:10:50,223 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 67 [2018-11-10 03:10:51,597 WARN L179 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 263 DAG size of output: 195 [2018-11-10 03:10:52,098 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 66 [2018-11-10 03:10:52,605 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 131 [2018-11-10 03:10:53,100 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 83 [2018-11-10 03:10:53,638 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 134 [2018-11-10 03:10:54,241 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 141 [2018-11-10 03:10:54,717 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 298 DAG size of output: 85 [2018-11-10 03:10:55,100 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 119 [2018-11-10 03:10:56,316 WARN L179 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 181 [2018-11-10 03:10:56,712 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2018-11-10 03:10:57,148 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 106 [2018-11-10 03:10:57,603 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 53 [2018-11-10 03:10:58,108 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 296 DAG size of output: 73 [2018-11-10 03:10:58,804 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 108 [2018-11-10 03:10:59,242 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 73 [2018-11-10 03:11:00,125 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 126 [2018-11-10 03:11:00,459 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 116 [2018-11-10 03:11:01,006 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 140 [2018-11-10 03:11:01,364 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2018-11-10 03:11:01,785 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 141 [2018-11-10 03:11:02,213 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 77 [2018-11-10 03:11:02,714 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 87 [2018-11-10 03:11:03,118 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 47 [2018-11-10 03:11:03,606 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2018-11-10 03:11:04,500 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2018-11-10 03:11:04,758 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2018-11-10 03:11:05,112 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2018-11-10 03:11:05,426 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2018-11-10 03:11:06,240 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 69 [2018-11-10 03:11:08,531 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 66 [2018-11-10 03:11:10,310 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 68 [2018-11-10 03:11:11,590 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 67 [2018-11-10 03:11:12,847 WARN L179 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 176 [2018-11-10 03:11:13,461 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 86 [2018-11-10 03:11:14,445 WARN L179 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 140 [2018-11-10 03:11:14,819 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-11-10 03:11:15,111 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2018-11-10 03:11:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:11:15,732 INFO L93 Difference]: Finished difference Result 413 states and 438 transitions. [2018-11-10 03:11:15,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-11-10 03:11:15,733 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 144 [2018-11-10 03:11:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:11:15,734 INFO L225 Difference]: With dead ends: 413 [2018-11-10 03:11:15,734 INFO L226 Difference]: Without dead ends: 407 [2018-11-10 03:11:15,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 76 SyntacticMatches, 19 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25009 ImplicationChecksByTransitivity, 69.9s TimeCoverageRelationStatistics Valid=8646, Invalid=79266, Unknown=0, NotChecked=0, Total=87912 [2018-11-10 03:11:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-11-10 03:11:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 341. [2018-11-10 03:11:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-11-10 03:11:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 359 transitions. [2018-11-10 03:11:15,768 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 359 transitions. Word has length 144 [2018-11-10 03:11:15,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:11:15,768 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 359 transitions. [2018-11-10 03:11:15,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-11-10 03:11:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 359 transitions. [2018-11-10 03:11:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-10 03:11:15,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:11:15,769 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:11:15,769 INFO L424 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:11:15,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:11:15,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1667518857, now seen corresponding path program 15 times [2018-11-10 03:11:15,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:11:15,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:11:15,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:11:15,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:11:15,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:11:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:11:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 92 proven. 114 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-10 03:11:15,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:11:15,942 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:11:15,947 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:11:15,976 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-11-10 03:11:15,976 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:11:15,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:11:16,055 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 119 proven. 87 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-10 03:11:16,071 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:11:16,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2018-11-10 03:11:16,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-10 03:11:16,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-10 03:11:16,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2018-11-10 03:11:16,071 INFO L87 Difference]: Start difference. First operand 341 states and 359 transitions. Second operand 25 states. [2018-11-10 03:11:16,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:11:16,312 INFO L93 Difference]: Finished difference Result 583 states and 608 transitions. [2018-11-10 03:11:16,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 03:11:16,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 149 [2018-11-10 03:11:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:11:16,314 INFO L225 Difference]: With dead ends: 583 [2018-11-10 03:11:16,314 INFO L226 Difference]: Without dead ends: 250 [2018-11-10 03:11:16,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2018-11-10 03:11:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-11-10 03:11:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 226. [2018-11-10 03:11:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2018-11-10 03:11:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 231 transitions. [2018-11-10 03:11:16,353 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 231 transitions. Word has length 149 [2018-11-10 03:11:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:11:16,354 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 231 transitions. [2018-11-10 03:11:16,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-10 03:11:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 231 transitions. [2018-11-10 03:11:16,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-10 03:11:16,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:11:16,355 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:11:16,355 INFO L424 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:11:16,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:11:16,355 INFO L82 PathProgramCache]: Analyzing trace with hash 613303732, now seen corresponding path program 16 times [2018-11-10 03:11:16,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:11:16,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:11:16,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:11:16,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:11:16,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:11:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:11:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 60 proven. 146 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-10 03:11:16,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:11:16,525 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:11:16,530 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:11:16,551 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:11:16,551 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:11:16,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:11:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 87 proven. 119 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-10 03:11:16,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:11:16,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2018-11-10 03:11:16,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-10 03:11:16,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-10 03:11:16,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2018-11-10 03:11:16,669 INFO L87 Difference]: Start difference. First operand 226 states and 231 transitions. Second operand 25 states. [2018-11-10 03:11:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:11:16,988 INFO L93 Difference]: Finished difference Result 245 states and 250 transitions. [2018-11-10 03:11:16,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 03:11:16,989 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 149 [2018-11-10 03:11:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:11:16,989 INFO L225 Difference]: With dead ends: 245 [2018-11-10 03:11:16,989 INFO L226 Difference]: Without dead ends: 174 [2018-11-10 03:11:16,989 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2018-11-10 03:11:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-11-10 03:11:17,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 165. [2018-11-10 03:11:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-10 03:11:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 168 transitions. [2018-11-10 03:11:17,004 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 168 transitions. Word has length 149 [2018-11-10 03:11:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:11:17,004 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 168 transitions. [2018-11-10 03:11:17,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-10 03:11:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 168 transitions. [2018-11-10 03:11:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-10 03:11:17,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:11:17,005 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:11:17,005 INFO L424 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:11:17,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:11:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash -395678369, now seen corresponding path program 17 times [2018-11-10 03:11:17,005 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:11:17,005 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:11:17,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:11:17,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:11:17,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:11:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:11:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:11:25,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:11:25,918 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:11:25,923 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 03:11:25,957 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-11-10 03:11:25,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:11:25,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:11:39,491 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 124 [2018-11-10 03:11:39,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,494 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,495 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,496 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,497 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,498 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,498 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,499 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:11:39,499 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,500 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,500 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:11:39,501 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,501 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,502 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,502 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,503 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,504 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,504 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,505 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,505 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:11:39,506 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,506 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,507 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,507 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:11:39,508 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,508 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:11:39,509 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:11:39,509 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:11:39,546 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 23 disjoint index pairs (out of 66 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 285 [2018-11-10 03:11:39,546 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:11:39,573 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:11:39,577 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:11:39,577 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:176, output treesize:7 [2018-11-10 03:11:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:11:40,023 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:11:40,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 87] total 161 [2018-11-10 03:11:40,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-11-10 03:11:40,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-11-10 03:11:40,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=25178, Unknown=0, NotChecked=0, Total=25760 [2018-11-10 03:11:40,025 INFO L87 Difference]: Start difference. First operand 165 states and 168 transitions. Second operand 161 states. [2018-11-10 03:11:46,315 WARN L179 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 319 DAG size of output: 256 [2018-11-10 03:11:47,150 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 43 [2018-11-10 03:11:47,960 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 48 [2018-11-10 03:11:48,557 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 53 [2018-11-10 03:11:49,495 WARN L179 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 211 [2018-11-10 03:11:50,217 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 52 [2018-11-10 03:11:50,906 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 54 [2018-11-10 03:11:51,535 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 53 [2018-11-10 03:11:52,180 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 46 [2018-11-10 03:11:52,861 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 53 [2018-11-10 03:11:53,462 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 50 [2018-11-10 03:11:54,083 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 54 [2018-11-10 03:11:54,722 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 57 [2018-11-10 03:11:55,315 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 55 [2018-11-10 03:11:55,947 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 51 [2018-11-10 03:11:56,614 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 378 DAG size of output: 58 [2018-11-10 03:11:57,217 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 54 [2018-11-10 03:11:57,870 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 56 [2018-11-10 03:11:58,540 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 62 [2018-11-10 03:11:59,184 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 378 DAG size of output: 59 [2018-11-10 03:11:59,791 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 57 [2018-11-10 03:12:00,424 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 353 DAG size of output: 59 [2018-11-10 03:12:01,809 WARN L179 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 319 DAG size of output: 255 [2018-11-10 03:12:02,467 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 161 [2018-11-10 03:12:03,945 WARN L179 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 317 DAG size of output: 258 [2018-11-10 03:12:04,659 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 172 [2018-11-10 03:12:05,313 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 60 [2018-11-10 03:12:06,137 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 185 [2018-11-10 03:12:06,606 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 131 [2018-11-10 03:12:06,934 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 112 [2018-11-10 03:12:07,577 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 383 DAG size of output: 65 [2018-11-10 03:12:08,263 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 383 DAG size of output: 64 [2018-11-10 03:12:09,590 WARN L179 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 233 [2018-11-10 03:12:10,438 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 364 DAG size of output: 60 [2018-11-10 03:12:11,132 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 65 [2018-11-10 03:12:11,431 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2018-11-10 03:12:11,715 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 107 [2018-11-10 03:12:12,623 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 65 [2018-11-10 03:12:13,345 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 70 [2018-11-10 03:12:14,033 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 64 [2018-11-10 03:12:14,762 WARN L179 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 395 DAG size of output: 96 [2018-11-10 03:12:15,646 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 57 [2018-11-10 03:12:16,309 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 371 DAG size of output: 67 [2018-11-10 03:12:16,585 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2018-11-10 03:12:17,683 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 62 [2018-11-10 03:12:18,372 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 72 [2018-11-10 03:12:18,973 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 61 [2018-11-10 03:12:19,638 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 71 [2018-11-10 03:12:20,401 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 55 [2018-11-10 03:12:21,061 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 66 [2018-11-10 03:12:22,334 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 60 [2018-11-10 03:12:23,068 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 71 [2018-11-10 03:12:23,658 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 59 [2018-11-10 03:12:24,310 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 70 [2018-11-10 03:12:25,069 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 53 [2018-11-10 03:12:25,730 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 383 DAG size of output: 67 [2018-11-10 03:12:26,896 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 58 [2018-11-10 03:12:27,564 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 72 [2018-11-10 03:12:28,171 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 57 [2018-11-10 03:12:28,872 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 71 [2018-11-10 03:12:29,506 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 51 [2018-11-10 03:12:30,204 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 66 [2018-11-10 03:12:31,178 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 56 [2018-11-10 03:12:31,833 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-11-10 03:12:32,414 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 370 DAG size of output: 55 [2018-11-10 03:12:33,061 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 70 [2018-11-10 03:12:33,804 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 53 [2018-11-10 03:12:34,451 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 68 [2018-11-10 03:12:35,107 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 58 [2018-11-10 03:12:35,751 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 73 [2018-11-10 03:12:37,532 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 334 DAG size of output: 248 [2018-11-10 03:12:38,186 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 72 [2018-11-10 03:12:38,884 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 164 [2018-11-10 03:12:39,565 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 91 [2018-11-10 03:12:40,437 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 162 [2018-11-10 03:12:41,460 WARN L179 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 171 [2018-11-10 03:12:42,126 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 96 [2018-11-10 03:12:42,684 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 160 [2018-11-10 03:12:44,310 WARN L179 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 334 DAG size of output: 227 [2018-11-10 03:12:44,834 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 156 [2018-11-10 03:12:45,442 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 122 [2018-11-10 03:12:46,025 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 48 [2018-11-10 03:12:46,656 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 369 DAG size of output: 50 [2018-11-10 03:12:47,151 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 142 [2018-11-10 03:12:47,789 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 123 [2018-11-10 03:12:48,428 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 46 [2018-11-10 03:12:48,963 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 150 [2018-11-10 03:12:49,831 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 152 [2018-11-10 03:12:50,392 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 137 [2018-11-10 03:12:51,024 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 221 DAG size of output: 175 [2018-11-10 03:12:51,523 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2018-11-10 03:12:52,067 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 174 [2018-11-10 03:12:52,697 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 352 DAG size of output: 51 [2018-11-10 03:12:53,404 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 70 [2018-11-10 03:12:54,054 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 49 [2018-11-10 03:12:54,467 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 123 [2018-11-10 03:12:54,949 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 161 [2018-11-10 03:12:55,597 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 47 [2018-11-10 03:12:56,068 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2018-11-10 03:12:56,619 WARN L179 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 170 [2018-11-10 03:12:57,098 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 122 [2018-11-10 03:12:57,706 WARN L179 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 157 [2018-11-10 03:12:58,143 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2018-11-10 03:12:58,762 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 52 [2018-11-10 03:12:59,675 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 372 DAG size of output: 72 [2018-11-10 03:13:00,325 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 366 DAG size of output: 50 [2018-11-10 03:13:00,678 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2018-11-10 03:13:01,282 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 51 [2018-11-10 03:13:01,683 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 109 [2018-11-10 03:13:02,020 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2018-11-10 03:13:02,400 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2018-11-10 03:13:02,990 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 368 DAG size of output: 56 [2018-11-10 03:13:03,649 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 71 [2018-11-10 03:13:04,256 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 367 DAG size of output: 54 [2018-11-10 03:13:05,174 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 52 [2018-11-10 03:13:06,704 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 57 [2018-11-10 03:13:07,364 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 72 [2018-11-10 03:13:07,983 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 55 [2018-11-10 03:13:08,841 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 57 [2018-11-10 03:13:10,047 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 62 [2018-11-10 03:13:10,708 WARN L179 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 388 DAG size of output: 71 [2018-11-10 03:13:11,331 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 374 DAG size of output: 60 [2018-11-10 03:13:12,000 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 58 [2018-11-10 03:13:12,717 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 61 [2018-11-10 03:13:13,404 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 73 [2018-11-10 03:13:14,864 WARN L179 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 319 DAG size of output: 255 [2018-11-10 03:13:15,601 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 161 [2018-11-10 03:13:17,077 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 317 DAG size of output: 258 [2018-11-10 03:13:17,778 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 172 [2018-11-10 03:13:18,937 WARN L179 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 199 [2018-11-10 03:13:19,590 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 94 [2018-11-10 03:13:20,653 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 167 [2018-11-10 03:13:21,524 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 163 [2018-11-10 03:13:22,064 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 143 [2018-11-10 03:13:22,728 WARN L179 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 192 [2018-11-10 03:13:23,141 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 118 [2018-11-10 03:13:23,470 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2018-11-10 03:13:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:13:23,726 INFO L93 Difference]: Finished difference Result 480 states and 508 transitions. [2018-11-10 03:13:23,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-11-10 03:13:23,726 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 164 [2018-11-10 03:13:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:13:23,727 INFO L225 Difference]: With dead ends: 480 [2018-11-10 03:13:23,727 INFO L226 Difference]: Without dead ends: 474 [2018-11-10 03:13:23,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 84 SyntacticMatches, 21 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33494 ImplicationChecksByTransitivity, 112.8s TimeCoverageRelationStatistics Valid=12184, Invalid=107878, Unknown=0, NotChecked=0, Total=120062 [2018-11-10 03:13:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-11-10 03:13:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 391. [2018-11-10 03:13:23,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-11-10 03:13:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 411 transitions. [2018-11-10 03:13:23,776 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 411 transitions. Word has length 164 [2018-11-10 03:13:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:13:23,776 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 411 transitions. [2018-11-10 03:13:23,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-11-10 03:13:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 411 transitions. [2018-11-10 03:13:23,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-10 03:13:23,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:13:23,777 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:13:23,777 INFO L424 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:13:23,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:13:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1280064954, now seen corresponding path program 18 times [2018-11-10 03:13:23,777 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:13:23,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:13:23,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:23,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:13:23,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:13:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 87 proven. 188 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2018-11-10 03:13:23,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:13:23,906 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:13:23,912 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 03:13:23,958 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-11-10 03:13:23,958 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:13:23,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:13:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 119 proven. 156 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2018-11-10 03:13:24,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:13:24,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2018-11-10 03:13:24,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-10 03:13:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-10 03:13:24,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2018-11-10 03:13:24,060 INFO L87 Difference]: Start difference. First operand 391 states and 411 transitions. Second operand 28 states. [2018-11-10 03:13:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:13:24,795 INFO L93 Difference]: Finished difference Result 648 states and 673 transitions. [2018-11-10 03:13:24,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 03:13:24,795 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 169 [2018-11-10 03:13:24,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:13:24,797 INFO L225 Difference]: With dead ends: 648 [2018-11-10 03:13:24,797 INFO L226 Difference]: Without dead ends: 525 [2018-11-10 03:13:24,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=429, Invalid=1463, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 03:13:24,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2018-11-10 03:13:24,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 439. [2018-11-10 03:13:24,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-11-10 03:13:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 458 transitions. [2018-11-10 03:13:24,872 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 458 transitions. Word has length 169 [2018-11-10 03:13:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:13:24,872 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 458 transitions. [2018-11-10 03:13:24,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-10 03:13:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 458 transitions. [2018-11-10 03:13:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-10 03:13:24,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:13:24,874 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:13:24,874 INFO L424 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:13:24,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:13:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash 155748633, now seen corresponding path program 19 times [2018-11-10 03:13:24,874 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:13:24,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:13:24,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:24,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:13:24,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:13:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:13:33,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:13:33,696 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:13:33,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:13:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:13:33,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:13:40,431 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2018-11-10 03:13:40,432 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2018-11-10 03:13:40,432 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:13:40,436 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:13:40,438 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:13:40,438 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2018-11-10 03:13:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:13:40,863 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:13:40,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 99] total 130 [2018-11-10 03:13:40,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-11-10 03:13:40,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-11-10 03:13:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=16314, Unknown=0, NotChecked=0, Total=16770 [2018-11-10 03:13:40,864 INFO L87 Difference]: Start difference. First operand 439 states and 458 transitions. Second operand 130 states. [2018-11-10 03:13:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:13:48,262 INFO L93 Difference]: Finished difference Result 586 states and 608 transitions. [2018-11-10 03:13:48,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-11-10 03:13:48,262 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 184 [2018-11-10 03:13:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:13:48,264 INFO L225 Difference]: With dead ends: 586 [2018-11-10 03:13:48,264 INFO L226 Difference]: Without dead ends: 581 [2018-11-10 03:13:48,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 106 SyntacticMatches, 52 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4209 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=479, Invalid=17343, Unknown=0, NotChecked=0, Total=17822 [2018-11-10 03:13:48,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2018-11-10 03:13:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 531. [2018-11-10 03:13:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2018-11-10 03:13:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 553 transitions. [2018-11-10 03:13:48,327 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 553 transitions. Word has length 184 [2018-11-10 03:13:48,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:13:48,327 INFO L481 AbstractCegarLoop]: Abstraction has 531 states and 553 transitions. [2018-11-10 03:13:48,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-11-10 03:13:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 553 transitions. [2018-11-10 03:13:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-10 03:13:48,328 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:13:48,328 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:13:48,328 INFO L424 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:13:48,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:13:48,328 INFO L82 PathProgramCache]: Analyzing trace with hash 245212983, now seen corresponding path program 20 times [2018-11-10 03:13:48,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:13:48,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:13:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:48,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:13:48,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:48,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:13:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 161 proven. 193 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-10 03:13:48,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:13:48,482 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:13:48,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:13:48,510 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:13:48,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:13:48,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:13:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 198 proven. 156 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-10 03:13:48,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:13:48,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2018-11-10 03:13:48,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-10 03:13:48,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-10 03:13:48,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2018-11-10 03:13:48,699 INFO L87 Difference]: Start difference. First operand 531 states and 553 transitions. Second operand 31 states. [2018-11-10 03:13:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:13:49,305 INFO L93 Difference]: Finished difference Result 826 states and 854 transitions. [2018-11-10 03:13:49,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-10 03:13:49,305 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 189 [2018-11-10 03:13:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:13:49,306 INFO L225 Difference]: With dead ends: 826 [2018-11-10 03:13:49,306 INFO L226 Difference]: Without dead ends: 310 [2018-11-10 03:13:49,307 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 03:13:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-11-10 03:13:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 286. [2018-11-10 03:13:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2018-11-10 03:13:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 291 transitions. [2018-11-10 03:13:49,372 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 291 transitions. Word has length 189 [2018-11-10 03:13:49,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:13:49,372 INFO L481 AbstractCegarLoop]: Abstraction has 286 states and 291 transitions. [2018-11-10 03:13:49,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-10 03:13:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 291 transitions. [2018-11-10 03:13:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-10 03:13:49,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:13:49,373 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:13:49,373 INFO L424 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:13:49,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:13:49,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1954651636, now seen corresponding path program 21 times [2018-11-10 03:13:49,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:13:49,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:13:49,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:49,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:13:49,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:13:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 119 proven. 235 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-10 03:13:49,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:13:49,674 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:13:49,682 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:13:49,740 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-10 03:13:49,740 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:13:49,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:13:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 156 proven. 198 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-11-10 03:13:49,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:13:49,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2018-11-10 03:13:49,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-10 03:13:49,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-10 03:13:49,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2018-11-10 03:13:49,953 INFO L87 Difference]: Start difference. First operand 286 states and 291 transitions. Second operand 31 states. [2018-11-10 03:13:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:13:50,474 INFO L93 Difference]: Finished difference Result 305 states and 310 transitions. [2018-11-10 03:13:50,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-10 03:13:50,474 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 189 [2018-11-10 03:13:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:13:50,475 INFO L225 Difference]: With dead ends: 305 [2018-11-10 03:13:50,475 INFO L226 Difference]: Without dead ends: 214 [2018-11-10 03:13:50,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=526, Invalid=1826, Unknown=0, NotChecked=0, Total=2352 [2018-11-10 03:13:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-11-10 03:13:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 205. [2018-11-10 03:13:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-11-10 03:13:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 208 transitions. [2018-11-10 03:13:50,508 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 208 transitions. Word has length 189 [2018-11-10 03:13:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:13:50,508 INFO L481 AbstractCegarLoop]: Abstraction has 205 states and 208 transitions. [2018-11-10 03:13:50,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-10 03:13:50,508 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 208 transitions. [2018-11-10 03:13:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-10 03:13:50,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:13:50,509 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:13:50,509 INFO L424 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:13:50,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:13:50,510 INFO L82 PathProgramCache]: Analyzing trace with hash -765127265, now seen corresponding path program 22 times [2018-11-10 03:13:50,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:13:50,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:13:50,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:50,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:13:50,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:13:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:14:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:14:04,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:14:04,724 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:14:04,730 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:14:04,758 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:14:04,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:14:04,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:14:17,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2018-11-10 03:14:17,205 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2018-11-10 03:14:17,206 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:14:17,208 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:14:17,210 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:14:17,210 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2018-11-10 03:14:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:14:17,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:14:17,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 111] total 204 [2018-11-10 03:14:17,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-11-10 03:14:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-11-10 03:14:17,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1957, Invalid=39455, Unknown=0, NotChecked=0, Total=41412 [2018-11-10 03:14:17,639 INFO L87 Difference]: Start difference. First operand 205 states and 208 transitions. Second operand 204 states. [2018-11-10 03:14:26,799 WARN L179 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 392 DAG size of output: 323 [2018-11-10 03:14:29,698 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 322 DAG size of output: 292 [2018-11-10 03:14:38,226 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 393 DAG size of output: 324 [2018-11-10 03:14:42,502 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 51 [2018-11-10 03:14:43,002 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 56 [2018-11-10 03:14:43,466 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 55 [2018-11-10 03:14:44,013 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 51 [2018-11-10 03:14:44,575 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 55 [2018-11-10 03:14:45,109 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 295 DAG size of output: 54 [2018-11-10 03:14:45,737 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 52 [2018-11-10 03:14:46,368 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 56 [2018-11-10 03:14:46,984 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 55 [2018-11-10 03:14:47,673 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 50 [2018-11-10 03:14:48,399 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 54 [2018-11-10 03:14:49,095 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 53 [2018-11-10 03:14:49,928 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 415 DAG size of output: 47 [2018-11-10 03:14:50,792 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 416 DAG size of output: 52 [2018-11-10 03:14:51,602 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 416 DAG size of output: 51 [2018-11-10 03:14:52,280 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 86 [2018-11-10 03:14:53,060 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 380 DAG size of output: 88 [2018-11-10 03:14:55,047 WARN L179 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 375 DAG size of output: 317 [2018-11-10 03:14:55,954 WARN L179 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 222 [2018-11-10 03:14:57,110 WARN L179 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 180 [2018-11-10 03:14:58,717 WARN L179 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 278 DAG size of output: 216 [2018-11-10 03:14:59,835 WARN L179 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 178 [2018-11-10 03:15:00,653 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 187 [2018-11-10 03:15:03,492 WARN L179 SmtUtils]: Spent 1.85 s on a formula simplification. DAG size of input: 399 DAG size of output: 286 [2018-11-10 03:15:03,981 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2018-11-10 03:15:05,529 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 205 [2018-11-10 03:15:06,272 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 171 [2018-11-10 03:15:07,028 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 172 [2018-11-10 03:15:08,618 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2018-11-10 03:15:10,131 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2018-11-10 03:15:10,765 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 156 [2018-11-10 03:15:11,438 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 156 [2018-11-10 03:15:13,113 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2018-11-10 03:15:14,525 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 162 [2018-11-10 03:15:15,048 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 140 [2018-11-10 03:15:15,642 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 133 [2018-11-10 03:15:16,380 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 64 [2018-11-10 03:15:17,113 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 63 [2018-11-10 03:15:18,287 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 57 [2018-11-10 03:15:18,823 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 140 [2018-11-10 03:15:19,259 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 126 [2018-11-10 03:15:19,774 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 116 [2018-11-10 03:15:20,593 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 62 [2018-11-10 03:15:21,429 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 61 [2018-11-10 03:15:22,605 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 57 [2018-11-10 03:15:23,027 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2018-11-10 03:15:23,406 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2018-11-10 03:15:23,847 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 100 [2018-11-10 03:15:24,733 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 61 [2018-11-10 03:15:25,611 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 60 [2018-11-10 03:15:26,807 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 58 [2018-11-10 03:15:27,114 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2018-11-10 03:15:28,798 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 62 [2018-11-10 03:15:29,817 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 61 [2018-11-10 03:15:31,160 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 55 [2018-11-10 03:15:32,853 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 59 [2018-11-10 03:15:34,130 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 361 DAG size of output: 58 [2018-11-10 03:15:35,294 WARN L179 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 420 DAG size of output: 52 [2018-11-10 03:15:36,529 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 421 DAG size of output: 57 [2018-11-10 03:15:37,673 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 421 DAG size of output: 56 [2018-11-10 03:15:38,595 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 381 DAG size of output: 91 [2018-11-10 03:15:40,525 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 325 DAG size of output: 295 [2018-11-10 03:15:41,436 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 383 DAG size of output: 94 [2018-11-10 03:15:43,303 WARN L179 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 376 DAG size of output: 281 [2018-11-10 03:15:44,080 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 156 [2018-11-10 03:15:44,959 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 149 [2018-11-10 03:15:46,213 WARN L179 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 193 [2018-11-10 03:15:47,549 WARN L179 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 199 [2018-11-10 03:15:48,476 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 203 [2018-11-10 03:15:49,059 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2018-11-10 03:15:49,796 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2018-11-10 03:15:50,602 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 187 [2018-11-10 03:15:51,255 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2018-11-10 03:15:51,835 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2018-11-10 03:15:52,329 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2018-11-10 03:15:52,758 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2018-11-10 03:15:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:15:53,581 INFO L93 Difference]: Finished difference Result 500 states and 524 transitions. [2018-11-10 03:15:53,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-11-10 03:15:53,581 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 204 [2018-11-10 03:15:53,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:15:53,582 INFO L225 Difference]: With dead ends: 500 [2018-11-10 03:15:53,582 INFO L226 Difference]: Without dead ends: 494 [2018-11-10 03:15:53,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 101 SyntacticMatches, 24 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51620 ImplicationChecksByTransitivity, 107.5s TimeCoverageRelationStatistics Valid=14062, Invalid=143150, Unknown=0, NotChecked=0, Total=157212 [2018-11-10 03:15:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2018-11-10 03:15:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 398. [2018-11-10 03:15:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2018-11-10 03:15:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 412 transitions. [2018-11-10 03:15:53,653 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 412 transitions. Word has length 204 [2018-11-10 03:15:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:15:53,653 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 412 transitions. [2018-11-10 03:15:53,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-11-10 03:15:53,653 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 412 transitions. [2018-11-10 03:15:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-10 03:15:53,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:15:53,654 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:15:53,655 INFO L424 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:15:53,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:15:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1646394993, now seen corresponding path program 23 times [2018-11-10 03:15:53,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:15:53,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:15:53,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:15:53,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:15:53,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:15:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:15:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 203 proven. 240 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2018-11-10 03:15:53,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:15:53,852 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:15:53,858 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 03:15:53,898 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2018-11-10 03:15:53,898 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:15:53,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:15:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 245 proven. 198 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2018-11-10 03:15:54,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:15:54,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2018-11-10 03:15:54,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-10 03:15:54,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-10 03:15:54,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 03:15:54,091 INFO L87 Difference]: Start difference. First operand 398 states and 412 transitions. Second operand 34 states. [2018-11-10 03:15:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:15:54,475 INFO L93 Difference]: Finished difference Result 681 states and 701 transitions. [2018-11-10 03:15:54,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-10 03:15:54,475 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 209 [2018-11-10 03:15:54,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:15:54,476 INFO L225 Difference]: With dead ends: 681 [2018-11-10 03:15:54,476 INFO L226 Difference]: Without dead ends: 340 [2018-11-10 03:15:54,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=454, Invalid=1438, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 03:15:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-10 03:15:54,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 316. [2018-11-10 03:15:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-11-10 03:15:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 321 transitions. [2018-11-10 03:15:54,552 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 321 transitions. Word has length 209 [2018-11-10 03:15:54,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:15:54,553 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 321 transitions. [2018-11-10 03:15:54,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-10 03:15:54,553 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 321 transitions. [2018-11-10 03:15:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-10 03:15:54,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:15:54,554 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:15:54,554 INFO L424 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:15:54,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:15:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash 556150522, now seen corresponding path program 24 times [2018-11-10 03:15:54,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:15:54,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:15:54,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:15:54,555 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:15:54,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:15:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:15:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 156 proven. 287 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2018-11-10 03:15:54,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:15:54,715 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:15:54,720 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 03:15:54,783 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-11-10 03:15:54,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:15:54,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:15:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 839 backedges. 198 proven. 245 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2018-11-10 03:15:54,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:15:54,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2018-11-10 03:15:54,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-10 03:15:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-10 03:15:54,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 03:15:54,922 INFO L87 Difference]: Start difference. First operand 316 states and 321 transitions. Second operand 34 states. [2018-11-10 03:15:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:15:55,516 INFO L93 Difference]: Finished difference Result 335 states and 340 transitions. [2018-11-10 03:15:55,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-10 03:15:55,517 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 209 [2018-11-10 03:15:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:15:55,517 INFO L225 Difference]: With dead ends: 335 [2018-11-10 03:15:55,517 INFO L226 Difference]: Without dead ends: 234 [2018-11-10 03:15:55,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=633, Invalid=2229, Unknown=0, NotChecked=0, Total=2862 [2018-11-10 03:15:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-11-10 03:15:55,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 225. [2018-11-10 03:15:55,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-11-10 03:15:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2018-11-10 03:15:55,545 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 209 [2018-11-10 03:15:55,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:15:55,545 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 228 transitions. [2018-11-10 03:15:55,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-10 03:15:55,545 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 228 transitions. [2018-11-10 03:15:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-10 03:15:55,546 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:15:55,546 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:15:55,546 INFO L424 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:15:55,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:15:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash 584812633, now seen corresponding path program 25 times [2018-11-10 03:15:55,547 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:15:55,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:15:55,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:15:55,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:15:55,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:15:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:15:56,223 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-11-10 03:16:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:16:14,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:16:14,265 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:16:14,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:16:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:16:14,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:16:49,996 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 254 treesize of output 184 [2018-11-10 03:16:50,000 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,000 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,001 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,002 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,003 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,003 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,004 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,005 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,005 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,006 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,007 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,007 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,008 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,009 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,010 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,010 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,011 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,012 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,013 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,013 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,014 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,015 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,015 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,016 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,017 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,018 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,018 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,019 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,020 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,020 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,021 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,022 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,023 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,023 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,024 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,025 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,025 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,026 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,026 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,027 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,028 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,028 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,030 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,031 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,032 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,032 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,033 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,033 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,034 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,035 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,036 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 03:16:50,036 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,036 INFO L682 Elim1Store]: detected equality via solver [2018-11-10 03:16:50,134 INFO L303 Elim1Store]: Index analysis took 136 ms [2018-11-10 03:16:50,135 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 18 select indices, 18 select index equivalence classes, 45 disjoint index pairs (out of 153 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 486 [2018-11-10 03:16:50,136 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 03:16:50,202 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:16:50,206 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 03:16:50,206 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:260, output treesize:7 [2018-11-10 03:16:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 980 backedges. 0 proven. 980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:16:51,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:16:51,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 123] total 224 [2018-11-10 03:16:51,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-11-10 03:16:51,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-11-10 03:16:51,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=819, Invalid=49133, Unknown=0, NotChecked=0, Total=49952 [2018-11-10 03:16:51,104 INFO L87 Difference]: Start difference. First operand 225 states and 228 transitions. Second operand 224 states. [2018-11-10 03:17:04,455 WARN L179 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 453 DAG size of output: 352 [2018-11-10 03:17:05,993 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 500 DAG size of output: 52 [2018-11-10 03:17:07,423 WARN L179 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 505 DAG size of output: 57 [2018-11-10 03:17:08,621 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 510 DAG size of output: 68 [2018-11-10 03:17:10,623 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 340 DAG size of output: 309 [2018-11-10 03:17:11,988 WARN L179 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 509 DAG size of output: 54 [2018-11-10 03:17:13,307 WARN L179 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 69 [2018-11-10 03:17:14,527 WARN L179 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 506 DAG size of output: 57 [2018-11-10 03:17:15,767 WARN L179 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 67 [2018-11-10 03:17:17,070 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 519 DAG size of output: 61 [2018-11-10 03:17:18,250 WARN L179 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 517 DAG size of output: 58 [2018-11-10 03:17:19,487 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 515 DAG size of output: 59 [2018-11-10 03:17:20,754 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 518 DAG size of output: 71 [2018-11-10 03:17:21,962 WARN L179 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 62 [2018-11-10 03:17:23,200 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 61 [2018-11-10 03:17:24,483 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 67 [2018-11-10 03:17:25,676 WARN L179 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 71 [2018-11-10 03:17:26,958 WARN L179 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 526 DAG size of output: 65 [2018-11-10 03:17:28,282 WARN L179 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 529 DAG size of output: 76 [2018-11-10 03:17:29,500 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 526 DAG size of output: 68 [2018-11-10 03:17:30,726 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 521 DAG size of output: 66 [2018-11-10 03:17:32,005 WARN L179 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 526 DAG size of output: 72 [2018-11-10 03:17:33,217 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 523 DAG size of output: 73 [2018-11-10 03:17:34,518 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 530 DAG size of output: 70 [2018-11-10 03:17:35,830 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 533 DAG size of output: 75 [2018-11-10 03:17:37,109 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 73 [2018-11-10 03:17:38,433 WARN L179 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 533 DAG size of output: 75 [2018-11-10 03:17:39,772 WARN L179 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 536 DAG size of output: 77 [2018-11-10 03:17:41,035 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 533 DAG size of output: 76 [2018-11-10 03:17:42,277 WARN L179 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 497 DAG size of output: 75 [2018-11-10 03:17:43,539 WARN L179 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 503 DAG size of output: 80 [2018-11-10 03:17:46,438 WARN L179 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 455 DAG size of output: 352 [2018-11-10 03:17:47,824 WARN L179 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 221 [2018-11-10 03:17:50,879 WARN L179 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 451 DAG size of output: 353 [2018-11-10 03:17:52,267 WARN L179 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 242 [2018-11-10 03:17:53,587 WARN L179 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 525 DAG size of output: 79 [2018-11-10 03:17:55,115 WARN L179 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 332 DAG size of output: 259 [2018-11-10 03:17:55,910 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 161 [2018-11-10 03:17:56,495 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 162 [2018-11-10 03:17:57,926 WARN L179 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 84 [2018-11-10 03:17:59,207 WARN L179 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 76 [2018-11-10 03:18:02,718 WARN L179 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 459 DAG size of output: 319 [2018-11-10 03:18:04,381 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 522 DAG size of output: 79 [2018-11-10 03:18:05,745 WARN L179 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 523 DAG size of output: 84 [2018-11-10 03:18:06,154 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2018-11-10 03:18:06,697 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 156 [2018-11-10 03:18:08,517 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 84 [2018-11-10 03:18:09,928 WARN L179 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 89 [2018-11-10 03:18:11,194 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 83 [2018-11-10 03:18:12,560 WARN L179 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 553 DAG size of output: 81 [2018-11-10 03:18:14,257 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 530 DAG size of output: 76 [2018-11-10 03:18:15,608 WARN L179 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 529 DAG size of output: 86 [2018-11-10 03:18:16,000 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2018-11-10 03:18:16,493 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 145 [2018-11-10 03:18:18,287 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 81 [2018-11-10 03:18:19,689 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 91 [2018-11-10 03:18:20,965 WARN L179 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 80 [2018-11-10 03:18:22,369 WARN L179 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 90 [2018-11-10 03:18:24,045 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 525 DAG size of output: 74 [2018-11-10 03:18:25,423 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 539 DAG size of output: 85 [2018-11-10 03:18:26,245 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2018-11-10 03:18:28,014 WARN L179 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 526 DAG size of output: 79 [2018-11-10 03:18:29,462 WARN L179 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 90 [2018-11-10 03:18:30,740 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 526 DAG size of output: 78 [2018-11-10 03:18:32,164 WARN L179 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 89 [2018-11-10 03:18:33,921 WARN L179 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 527 DAG size of output: 71 [2018-11-10 03:18:35,463 WARN L179 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 536 DAG size of output: 86 [2018-11-10 03:18:36,305 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2018-11-10 03:18:38,179 WARN L179 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 76 [2018-11-10 03:18:39,759 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 537 DAG size of output: 91 [2018-11-10 03:18:41,055 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 75 [2018-11-10 03:18:42,437 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 537 DAG size of output: 90 [2018-11-10 03:18:44,026 WARN L179 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 529 DAG size of output: 68 [2018-11-10 03:18:45,461 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 85 [2018-11-10 03:18:46,154 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-11-10 03:18:47,764 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 530 DAG size of output: 73 [2018-11-10 03:18:49,248 WARN L179 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 541 DAG size of output: 90 [2018-11-10 03:18:50,517 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 530 DAG size of output: 72 [2018-11-10 03:18:51,918 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 541 DAG size of output: 89 [2018-11-10 03:18:53,868 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 66 [2018-11-10 03:18:55,222 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 86 [2018-11-10 03:18:57,451 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 521 DAG size of output: 71 [2018-11-10 03:18:58,900 WARN L179 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 545 DAG size of output: 91 [2018-11-10 03:19:00,242 WARN L179 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 521 DAG size of output: 70 [2018-11-10 03:19:01,668 WARN L179 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 545 DAG size of output: 90 [2018-11-10 03:19:03,245 WARN L179 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 523 DAG size of output: 63 [2018-11-10 03:19:04,665 WARN L179 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 537 DAG size of output: 85 [2018-11-10 03:19:06,894 WARN L179 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 68 [2018-11-10 03:19:08,369 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 90 [2018-11-10 03:19:09,698 WARN L179 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 67 [2018-11-10 03:19:11,101 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 89 [2018-11-10 03:19:12,389 WARN L179 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 519 DAG size of output: 61 [2018-11-10 03:19:13,838 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 543 DAG size of output: 86 [2018-11-10 03:19:15,717 WARN L179 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 66 [2018-11-10 03:19:17,210 WARN L179 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 91 [2018-11-10 03:19:18,482 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 65 [2018-11-10 03:19:19,951 WARN L179 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 90 [2018-11-10 03:19:21,459 WARN L179 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 487 DAG size of output: 68 [2018-11-10 03:19:22,894 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 86 [2018-11-10 03:19:24,231 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 490 DAG size of output: 70 [2018-11-10 03:19:25,682 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 543 DAG size of output: 91 [2018-11-10 03:19:28,713 WARN L179 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 478 DAG size of output: 346 [2018-11-10 03:19:30,146 WARN L179 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 543 DAG size of output: 90 [2018-11-10 03:19:31,560 WARN L179 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 223 [2018-11-10 03:19:32,980 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 513 DAG size of output: 123 [2018-11-10 03:19:34,493 WARN L179 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 243 [2018-11-10 03:19:36,157 WARN L179 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 260 [2018-11-10 03:19:37,637 WARN L179 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 125 [2018-11-10 03:19:39,043 WARN L179 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 211 [2018-11-10 03:19:42,548 WARN L179 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 478 DAG size of output: 317 [2018-11-10 03:19:43,597 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 215 [2018-11-10 03:19:44,708 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 173 [2018-11-10 03:19:45,916 WARN L179 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 515 DAG size of output: 99 [2018-11-10 03:19:47,188 WARN L179 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 518 DAG size of output: 65 [2018-11-10 03:19:48,205 WARN L179 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 205 [2018-11-10 03:19:49,316 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 193 [2018-11-10 03:19:50,638 WARN L179 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 501 DAG size of output: 55 [2018-11-10 03:19:51,678 WARN L179 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 221 [2018-11-10 03:19:52,942 WARN L179 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 220 [2018-11-10 03:19:53,979 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 207 [2018-11-10 03:19:55,526 WARN L179 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 228 [2018-11-10 03:19:56,537 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 197 [2018-11-10 03:19:57,644 WARN L179 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 235 [2018-11-10 03:19:58,867 WARN L179 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 503 DAG size of output: 60 [2018-11-10 03:20:00,315 WARN L179 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 131 [2018-11-10 03:20:01,633 WARN L179 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 502 DAG size of output: 58 [2018-11-10 03:20:02,524 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 187 [2018-11-10 03:20:03,537 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 225 [2018-11-10 03:20:04,836 WARN L179 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 513 DAG size of output: 56 [2018-11-10 03:20:05,786 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 202 [2018-11-10 03:20:06,847 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 242 [2018-11-10 03:20:07,766 WARN L179 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 190 [2018-11-10 03:20:08,792 WARN L179 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 221 [2018-11-10 03:20:09,714 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 177 [2018-11-10 03:20:10,894 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 514 DAG size of output: 61 [2018-11-10 03:20:12,310 WARN L179 SmtUtils]: Spent 551.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 91 [2018-11-10 03:20:13,600 WARN L179 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 513 DAG size of output: 59 [2018-11-10 03:20:14,411 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 167 [2018-11-10 03:20:15,690 WARN L179 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 511 DAG size of output: 60 [2018-11-10 03:20:16,561 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 181 [2018-11-10 03:20:17,384 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 171 [2018-11-10 03:20:18,210 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 159 [2018-11-10 03:20:19,441 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 65 [2018-11-10 03:20:20,832 WARN L179 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 540 DAG size of output: 90 [2018-11-10 03:20:22,134 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 511 DAG size of output: 63 [2018-11-10 03:20:22,851 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 149 [2018-11-10 03:20:24,148 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 518 DAG size of output: 62 [2018-11-10 03:20:24,918 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 162 [2018-11-10 03:20:25,615 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 154 [2018-11-10 03:20:26,364 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 141 [2018-11-10 03:20:27,586 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 519 DAG size of output: 67 [2018-11-10 03:20:28,989 WARN L179 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 537 DAG size of output: 91 [2018-11-10 03:20:30,301 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 518 DAG size of output: 65 [2018-11-10 03:20:30,948 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 131 [2018-11-10 03:20:32,273 WARN L179 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 66 [2018-11-10 03:20:32,974 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 145 [2018-11-10 03:20:33,578 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 139 [2018-11-10 03:20:34,232 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2018-11-10 03:20:35,464 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 525 DAG size of output: 71 [2018-11-10 03:20:36,867 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 541 DAG size of output: 90 [2018-11-10 03:20:38,201 WARN L179 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 524 DAG size of output: 69 [2018-11-10 03:20:38,766 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 116 [2018-11-10 03:20:40,062 WARN L179 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 519 DAG size of output: 67 [2018-11-10 03:20:40,651 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 123 [2018-11-10 03:20:41,181 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 120 [2018-11-10 03:20:41,762 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 110 [2018-11-10 03:20:43,029 WARN L179 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 72 [2018-11-10 03:20:44,429 WARN L179 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 545 DAG size of output: 91 [2018-11-10 03:20:45,736 WARN L179 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 519 DAG size of output: 70 [2018-11-10 03:20:47,579 WARN L179 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 71 [2018-11-10 03:20:48,095 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2018-11-10 03:20:48,548 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 106 [2018-11-10 03:20:50,366 WARN L179 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 529 DAG size of output: 76 [2018-11-10 03:20:51,784 WARN L179 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 538 DAG size of output: 90 [2018-11-10 03:20:53,184 WARN L179 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 528 DAG size of output: 74 [2018-11-10 03:20:54,927 WARN L179 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 530 DAG size of output: 74 [2018-11-10 03:20:57,177 WARN L179 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 531 DAG size of output: 79 [2018-11-10 03:20:58,583 WARN L179 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 544 DAG size of output: 91 [2018-11-10 03:20:59,857 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 530 DAG size of output: 77 [2018-11-10 03:21:01,180 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 510 DAG size of output: 76 [2018-11-10 03:21:02,672 WARN L179 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 79 [2018-11-10 03:21:04,085 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 543 DAG size of output: 91 [2018-11-10 03:21:07,164 WARN L179 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 455 DAG size of output: 353 [2018-11-10 03:21:08,675 WARN L179 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 273 DAG size of output: 221 [2018-11-10 03:21:11,899 WARN L179 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 451 DAG size of output: 353 [2018-11-10 03:21:13,421 WARN L179 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 242 [2018-11-10 03:21:15,313 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 366 DAG size of output: 288 [2018-11-10 03:21:16,724 WARN L179 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 515 DAG size of output: 126 [2018-11-10 03:21:18,736 WARN L179 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 247 [2018-11-10 03:21:20,597 WARN L179 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 375 DAG size of output: 247 [2018-11-10 03:21:21,839 WARN L179 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 223 [2018-11-10 03:21:23,297 WARN L179 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 273 [2018-11-10 03:21:24,274 WARN L179 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 197 [2018-11-10 03:21:25,102 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 174 [2018-11-10 03:21:25,811 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 151 [2018-11-10 03:21:26,402 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 131 [2018-11-10 03:21:26,906 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 110 [2018-11-10 03:21:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:21:27,341 INFO L93 Difference]: Finished difference Result 660 states and 697 transitions. [2018-11-10 03:21:27,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2018-11-10 03:21:27,342 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 224 [2018-11-10 03:21:27,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:21:27,343 INFO L225 Difference]: With dead ends: 660 [2018-11-10 03:21:27,343 INFO L226 Difference]: Without dead ends: 654 [2018-11-10 03:21:27,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 110 SyntacticMatches, 28 SemanticMatches, 483 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65428 ImplicationChecksByTransitivity, 303.1s TimeCoverageRelationStatistics Valid=23263, Invalid=211477, Unknown=0, NotChecked=0, Total=234740 [2018-11-10 03:21:27,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2018-11-10 03:21:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 541. [2018-11-10 03:21:27,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2018-11-10 03:21:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 567 transitions. [2018-11-10 03:21:27,428 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 567 transitions. Word has length 224 [2018-11-10 03:21:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:21:27,429 INFO L481 AbstractCegarLoop]: Abstraction has 541 states and 567 transitions. [2018-11-10 03:21:27,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-11-10 03:21:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 567 transitions. [2018-11-10 03:21:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-10 03:21:27,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:21:27,430 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:21:27,430 INFO L424 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:21:27,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:21:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash -243964364, now seen corresponding path program 26 times [2018-11-10 03:21:27,431 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:21:27,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:21:27,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:21:27,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:21:27,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:21:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:21:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 198 proven. 344 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-10 03:21:27,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:21:27,670 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:21:27,676 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:21:27,705 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:21:27,705 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:21:27,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:21:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 245 proven. 297 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2018-11-10 03:21:27,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:21:27,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2018-11-10 03:21:27,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-10 03:21:27,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-10 03:21:27,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2018-11-10 03:21:27,880 INFO L87 Difference]: Start difference. First operand 541 states and 567 transitions. Second operand 37 states. [2018-11-10 03:21:29,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:21:29,066 INFO L93 Difference]: Finished difference Result 888 states and 919 transitions. [2018-11-10 03:21:29,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-10 03:21:29,066 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 229 [2018-11-10 03:21:29,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:21:29,067 INFO L225 Difference]: With dead ends: 888 [2018-11-10 03:21:29,067 INFO L226 Difference]: Without dead ends: 720 [2018-11-10 03:21:29,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=750, Invalid=2672, Unknown=0, NotChecked=0, Total=3422 [2018-11-10 03:21:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-11-10 03:21:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 604. [2018-11-10 03:21:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2018-11-10 03:21:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 629 transitions. [2018-11-10 03:21:29,151 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 629 transitions. Word has length 229 [2018-11-10 03:21:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:21:29,152 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 629 transitions. [2018-11-10 03:21:29,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-10 03:21:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 629 transitions. [2018-11-10 03:21:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-10 03:21:29,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:21:29,153 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:21:29,154 INFO L424 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:21:29,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:21:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1607856673, now seen corresponding path program 27 times [2018-11-10 03:21:29,154 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:21:29,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:21:29,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:21:29,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:21:29,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:21:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:21:29,633 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:91) at de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createCCEquality(EqualityProxy.java:112) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.mbtc(LinArSolve.java:2067) at de.uni_freiburg.informatik.ultimate.smtinterpol.theory.linar.LinArSolve.computeConflictClause(LinArSolve.java:618) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.checkConsistency(DPLLEngine.java:1027) at de.uni_freiburg.informatik.ultimate.smtinterpol.dpll.DPLLEngine.solve(DPLLEngine.java:1171) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol$CheckType$1.check(SMTInterpol.java:114) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSatAssuming(SMTInterpol.java:502) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.checkSat(SMTInterpol.java:455) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:974) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-10 03:21:29,636 INFO L168 Benchmark]: Toolchain (without parser) took 804249.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.6 MB). Free memory was 960.2 MB in the beginning and 967.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 528.6 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:29,636 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:21:29,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.37 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:29,636 INFO L168 Benchmark]: Boogie Preprocessor took 22.57 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:29,636 INFO L168 Benchmark]: RCFGBuilder took 212.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 946.8 MB in the beginning and 1.2 GB in the end (delta: -220.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:29,637 INFO L168 Benchmark]: TraceAbstraction took 803858.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.9 MB). Free memory was 1.2 GB in the beginning and 967.6 MB in the end (delta: 199.8 MB). Peak memory consumption was 549.2 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:29,637 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.37 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.57 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 212.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 946.8 MB in the beginning and 1.2 GB in the end (delta: -220.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 803858.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.9 MB). Free memory was 1.2 GB in the beginning and 967.6 MB in the end (delta: 199.8 MB). Peak memory consumption was 549.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.smtinterpol.convert.EqualityProxy.createLAEquality(EqualityProxy.java:91) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:21:31,060 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:21:31,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:21:31,068 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:21:31,068 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:21:31,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:21:31,070 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:21:31,071 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:21:31,072 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:21:31,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:21:31,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:21:31,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:21:31,075 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:21:31,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:21:31,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:21:31,077 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:21:31,077 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:21:31,079 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:21:31,080 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:21:31,081 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:21:31,082 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:21:31,083 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:21:31,085 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:21:31,085 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:21:31,085 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:21:31,086 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:21:31,087 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:21:31,088 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:21:31,088 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:21:31,089 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:21:31,089 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:21:31,089 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:21:31,090 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:21:31,090 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:21:31,091 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:21:31,091 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:21:31,092 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 03:21:31,102 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:21:31,102 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:21:31,102 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:21:31,103 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 03:21:31,103 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 03:21:31,103 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 03:21:31,103 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 03:21:31,103 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 03:21:31,104 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:21:31,105 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:21:31,105 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:21:31,105 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:21:31,105 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:21:31,105 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:21:31,105 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:21:31,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:21:31,105 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:21:31,106 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:21:31,106 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:21:31,106 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 03:21:31,106 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:21:31,106 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 03:21:31,106 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 03:21:31,106 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_28b60327-6da2-4e91-83ab-d61f8bca5cfc/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 -> 84264ed0f1ef4901cce13c60e1561d0af5bb32e5 [2018-11-10 03:21:31,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:21:31,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:21:31,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:21:31,145 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:21:31,145 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:21:31,146 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/../../sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c [2018-11-10 03:21:31,181 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/6c392941a/601c3add33d64a70a21179340975dee2/FLAG30c418f69 [2018-11-10 03:21:31,573 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:21:31,573 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/sv-benchmarks/c/array-crafted/zero_sum_m2_true-unreach-call.c [2018-11-10 03:21:31,576 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/6c392941a/601c3add33d64a70a21179340975dee2/FLAG30c418f69 [2018-11-10 03:21:31,585 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_28b60327-6da2-4e91-83ab-d61f8bca5cfc/bin-2019/uautomizer/data/6c392941a/601c3add33d64a70a21179340975dee2 [2018-11-10 03:21:31,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:21:31,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 03:21:31,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:21:31,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:21:31,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:21:31,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:21:31" (1/1) ... [2018-11-10 03:21:31,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24051e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:21:31, skipping insertion in model container [2018-11-10 03:21:31,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:21:31" (1/1) ... [2018-11-10 03:21:31,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:21:31,615 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:21:31,740 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:21:31,744 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:21:31,755 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: 1 at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValueBitvector(TypeSizes.java:465) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:340) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:335) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.extractSizeTValue(TypeSizeAndOffsetComputer.java:317) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructSizeTValue_Array(TypeSizeAndOffsetComputer.java:229) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.computeSize(TypeSizeAndOffsetComputer.java:200) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructBytesizeExpression(TypeSizeAndOffsetComputer.java:120) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.MemoryHandler.calculateSizeOf(MemoryHandler.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.MemoryHandler.getMallocCall(MemoryHandler.java:514) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2686) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1876) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1011) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:318) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1519) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:330) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:960) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:364) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:287) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3316) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2119) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:537) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:268) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:228) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:191) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:129) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-10 03:21:31,758 INFO L168 Benchmark]: Toolchain (without parser) took 170.44 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:31,759 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:21:31,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.73 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:21:31,761 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.73 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: 1 de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArrayIndexOutOfBoundsException: 1: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValueBitvector(TypeSizes.java:465) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...