./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-new/nested_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/nested_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 a881e1073186594f4727f809fbe5d917ff145543 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:17:00,850 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:17:00,852 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:17:00,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:17:00,860 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:17:00,861 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:17:00,862 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:17:00,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:17:00,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:17:00,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:17:00,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:17:00,865 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:17:00,866 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:17:00,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:17:00,868 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:17:00,868 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:17:00,869 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:17:00,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:17:00,871 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:17:00,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:17:00,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:17:00,874 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:17:00,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:17:00,876 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:17:00,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:17:00,876 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:17:00,877 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:17:00,878 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:17:00,878 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:17:00,879 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:17:00,879 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:17:00,880 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:17:00,880 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:17:00,880 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:17:00,880 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:17:00,881 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:17:00,881 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 05:17:00,891 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:17:00,891 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:17:00,892 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:17:00,892 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:17:00,892 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:17:00,892 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:17:00,892 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:17:00,893 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:17:00,893 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:17:00,893 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:17:00,893 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:17:00,893 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:17:00,893 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:17:00,894 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:17:00,894 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:17:00,894 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:17:00,894 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:17:00,894 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:17:00,894 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:17:00,894 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:17:00,895 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:17:00,895 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:17:00,895 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:17:00,895 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:17:00,895 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:17:00,895 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:17:00,895 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:17:00,896 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:17:00,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:17:00,896 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_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 -> a881e1073186594f4727f809fbe5d917ff145543 [2018-11-10 05:17:00,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:17:00,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:17:00,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:17:00,929 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:17:00,929 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:17:00,930 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/../../sv-benchmarks/c/loop-new/nested_true-unreach-call_true-termination.i [2018-11-10 05:17:00,966 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/data/d16018b27/402525ad98634b459e34786c4494a7aa/FLAG01a1dc9d2 [2018-11-10 05:17:01,345 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:17:01,346 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/sv-benchmarks/c/loop-new/nested_true-unreach-call_true-termination.i [2018-11-10 05:17:01,349 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/data/d16018b27/402525ad98634b459e34786c4494a7aa/FLAG01a1dc9d2 [2018-11-10 05:17:01,357 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/data/d16018b27/402525ad98634b459e34786c4494a7aa [2018-11-10 05:17:01,359 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:17:01,359 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:17:01,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:17:01,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:17:01,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:17:01,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332681e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01, skipping insertion in model container [2018-11-10 05:17:01,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:17:01,379 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:17:01,467 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:17:01,470 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:17:01,480 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:17:01,489 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:17:01,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01 WrapperNode [2018-11-10 05:17:01,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:17:01,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:17:01,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:17:01,490 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:17:01,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... [2018-11-10 05:17:01,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:17:01,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:17:01,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:17:01,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:17:01,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:01,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:17:01,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:17:01,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:17:01,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:17:01,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:17:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-10 05:17:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:17:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 05:17:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:17:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:17:01,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:17:01,714 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:17:01,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:17:01 BoogieIcfgContainer [2018-11-10 05:17:01,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:17:01,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:17:01,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:17:01,718 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:17:01,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:17:01" (1/3) ... [2018-11-10 05:17:01,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102bfaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:17:01, skipping insertion in model container [2018-11-10 05:17:01,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:17:01" (2/3) ... [2018-11-10 05:17:01,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@102bfaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:17:01, skipping insertion in model container [2018-11-10 05:17:01,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:17:01" (3/3) ... [2018-11-10 05:17:01,722 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call_true-termination.i [2018-11-10 05:17:01,730 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:17:01,737 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:17:01,750 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:17:01,775 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:17:01,776 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:17:01,776 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:17:01,776 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:17:01,776 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:17:01,776 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:17:01,776 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:17:01,776 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:17:01,777 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:17:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-10 05:17:01,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 05:17:01,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:01,797 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:01,798 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:01,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -702630595, now seen corresponding path program 1 times [2018-11-10 05:17:01,805 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:01,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:01,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:01,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:01,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:01,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:01,889 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 05:17:01,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:17:01,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:17:01,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:17:01,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:17:01,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:17:01,903 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-10 05:17:01,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:01,920 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2018-11-10 05:17:01,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:17:01,921 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-10 05:17:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:01,927 INFO L225 Difference]: With dead ends: 43 [2018-11-10 05:17:01,927 INFO L226 Difference]: Without dead ends: 18 [2018-11-10 05:17:01,929 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 05:17:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-10 05:17:01,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-10 05:17:01,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 05:17:01,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2018-11-10 05:17:01,951 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2018-11-10 05:17:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:01,952 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2018-11-10 05:17:01,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:17:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2018-11-10 05:17:01,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 05:17:01,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:01,952 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:01,953 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:01,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:01,953 INFO L82 PathProgramCache]: Analyzing trace with hash -972126638, now seen corresponding path program 1 times [2018-11-10 05:17:01,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:01,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:01,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:01,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:01,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:01,989 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 05:17:01,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:17:01,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:17:01,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 05:17:01,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 05:17:01,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 05:17:01,992 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2018-11-10 05:17:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:02,030 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-11-10 05:17:02,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 05:17:02,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-10 05:17:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:02,032 INFO L225 Difference]: With dead ends: 29 [2018-11-10 05:17:02,032 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 05:17:02,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:17:02,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 05:17:02,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2018-11-10 05:17:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-10 05:17:02,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-11-10 05:17:02,035 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2018-11-10 05:17:02,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:02,035 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-11-10 05:17:02,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 05:17:02,036 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-11-10 05:17:02,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 05:17:02,036 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:02,036 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:02,036 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:02,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:02,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1998515670, now seen corresponding path program 1 times [2018-11-10 05:17:02,037 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:02,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:02,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:02,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:17:02,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:17:02,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 05:17:02,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 05:17:02,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 05:17:02,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 05:17:02,072 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 4 states. [2018-11-10 05:17:02,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:02,112 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-11-10 05:17:02,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 05:17:02,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-10 05:17:02,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:02,113 INFO L225 Difference]: With dead ends: 34 [2018-11-10 05:17:02,113 INFO L226 Difference]: Without dead ends: 23 [2018-11-10 05:17:02,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:17:02,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-10 05:17:02,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-10 05:17:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-10 05:17:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-10 05:17:02,116 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2018-11-10 05:17:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:02,116 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-10 05:17:02,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 05:17:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-10 05:17:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 05:17:02,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:02,117 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:02,117 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:02,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1293803971, now seen corresponding path program 1 times [2018-11-10 05:17:02,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:02,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:02,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:02,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:02,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:17:02,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:02,151 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:02,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:02,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:17:02,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:02,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-10 05:17:02,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:17:02,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:17:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:17:02,274 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2018-11-10 05:17:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:02,304 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-11-10 05:17:02,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 05:17:02,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-11-10 05:17:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:02,305 INFO L225 Difference]: With dead ends: 39 [2018-11-10 05:17:02,305 INFO L226 Difference]: Without dead ends: 26 [2018-11-10 05:17:02,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:17:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-10 05:17:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-10 05:17:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 05:17:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-11-10 05:17:02,310 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2018-11-10 05:17:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:02,310 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-11-10 05:17:02,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:17:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-11-10 05:17:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 05:17:02,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:02,312 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:02,312 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:02,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:02,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1379909750, now seen corresponding path program 2 times [2018-11-10 05:17:02,312 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:02,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:02,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:02,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:17:02,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:02,362 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:02,371 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:17:02,381 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:17:02,381 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:02,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 05:17:02,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:02,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2018-11-10 05:17:02,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:17:02,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:17:02,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:17:02,433 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2018-11-10 05:17:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:02,607 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2018-11-10 05:17:02,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 05:17:02,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-11-10 05:17:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:02,608 INFO L225 Difference]: With dead ends: 73 [2018-11-10 05:17:02,608 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 05:17:02,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2018-11-10 05:17:02,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 05:17:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2018-11-10 05:17:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-10 05:17:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-11-10 05:17:02,615 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 24 [2018-11-10 05:17:02,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:02,616 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-11-10 05:17:02,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:17:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-11-10 05:17:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 05:17:02,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:02,617 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:02,618 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:02,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1699386968, now seen corresponding path program 3 times [2018-11-10 05:17:02,619 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:02,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:02,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:02,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 05:17:02,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:02,666 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:02,673 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:17:02,682 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 05:17:02,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:02,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-10 05:17:02,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:02,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-11-10 05:17:02,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 05:17:02,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 05:17:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-10 05:17:02,748 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 11 states. [2018-11-10 05:17:03,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:03,001 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2018-11-10 05:17:03,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-10 05:17:03,002 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-11-10 05:17:03,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:03,003 INFO L225 Difference]: With dead ends: 106 [2018-11-10 05:17:03,003 INFO L226 Difference]: Without dead ends: 84 [2018-11-10 05:17:03,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2018-11-10 05:17:03,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-10 05:17:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2018-11-10 05:17:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-10 05:17:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2018-11-10 05:17:03,014 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 41 [2018-11-10 05:17:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:03,014 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2018-11-10 05:17:03,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 05:17:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2018-11-10 05:17:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 05:17:03,015 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:03,016 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 12, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:03,016 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:03,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash -319190378, now seen corresponding path program 4 times [2018-11-10 05:17:03,016 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:03,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:03,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:03,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:03,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-10 05:17:03,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:03,087 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:03,092 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:17:03,110 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:17:03,110 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:03,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 138 proven. 26 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-10 05:17:03,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:03,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-10 05:17:03,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 05:17:03,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 05:17:03,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:17:03,165 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 13 states. [2018-11-10 05:17:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:03,207 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2018-11-10 05:17:03,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:17:03,213 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 64 [2018-11-10 05:17:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:03,214 INFO L225 Difference]: With dead ends: 119 [2018-11-10 05:17:03,214 INFO L226 Difference]: Without dead ends: 77 [2018-11-10 05:17:03,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:17:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-10 05:17:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2018-11-10 05:17:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-10 05:17:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2018-11-10 05:17:03,222 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 64 [2018-11-10 05:17:03,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:03,223 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2018-11-10 05:17:03,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 05:17:03,223 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2018-11-10 05:17:03,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-11-10 05:17:03,224 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:03,224 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 15, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:03,224 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:03,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 414540755, now seen corresponding path program 5 times [2018-11-10 05:17:03,226 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:03,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:03,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:03,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:03,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:03,293 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-11-10 05:17:03,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:03,293 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:03,298 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 05:17:03,319 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-11-10 05:17:03,319 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:03,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 200 proven. 40 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-11-10 05:17:03,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:03,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-10 05:17:03,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 05:17:03,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 05:17:03,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-11-10 05:17:03,404 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 15 states. [2018-11-10 05:17:03,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:03,429 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2018-11-10 05:17:03,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 05:17:03,430 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2018-11-10 05:17:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:03,430 INFO L225 Difference]: With dead ends: 134 [2018-11-10 05:17:03,431 INFO L226 Difference]: Without dead ends: 86 [2018-11-10 05:17:03,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-11-10 05:17:03,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-10 05:17:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2018-11-10 05:17:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-10 05:17:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2018-11-10 05:17:03,441 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 73 [2018-11-10 05:17:03,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:03,441 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2018-11-10 05:17:03,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 05:17:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2018-11-10 05:17:03,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-10 05:17:03,442 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:03,442 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 18, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:03,442 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:03,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:03,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1138844106, now seen corresponding path program 6 times [2018-11-10 05:17:03,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:03,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:03,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:03,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:03,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 274 proven. 57 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-11-10 05:17:03,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:03,519 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:03,525 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 05:17:03,540 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-10 05:17:03,540 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:03,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 417 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-11-10 05:17:03,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:03,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2018-11-10 05:17:03,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 05:17:03,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 05:17:03,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-10 05:17:03,623 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 15 states. [2018-11-10 05:17:04,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:04,103 INFO L93 Difference]: Finished difference Result 201 states and 214 transitions. [2018-11-10 05:17:04,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-10 05:17:04,104 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-11-10 05:17:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:04,104 INFO L225 Difference]: With dead ends: 201 [2018-11-10 05:17:04,105 INFO L226 Difference]: Without dead ends: 147 [2018-11-10 05:17:04,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=938, Invalid=2032, Unknown=0, NotChecked=0, Total=2970 [2018-11-10 05:17:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-11-10 05:17:04,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2018-11-10 05:17:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-11-10 05:17:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 122 transitions. [2018-11-10 05:17:04,118 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 122 transitions. Word has length 82 [2018-11-10 05:17:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:04,118 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 122 transitions. [2018-11-10 05:17:04,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 05:17:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 122 transitions. [2018-11-10 05:17:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-10 05:17:04,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:04,120 INFO L375 BasicCegarLoop]: trace histogram [32, 28, 28, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:04,120 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:04,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:04,120 INFO L82 PathProgramCache]: Analyzing trace with hash -293632002, now seen corresponding path program 7 times [2018-11-10 05:17:04,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:04,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:04,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:04,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-10 05:17:04,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:04,224 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:04,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:04,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 539 proven. 77 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2018-11-10 05:17:04,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:04,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-10 05:17:04,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 05:17:04,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 05:17:04,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-11-10 05:17:04,338 INFO L87 Difference]: Start difference. First operand 118 states and 122 transitions. Second operand 19 states. [2018-11-10 05:17:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:04,374 INFO L93 Difference]: Finished difference Result 220 states and 231 transitions. [2018-11-10 05:17:04,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 05:17:04,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 117 [2018-11-10 05:17:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:04,376 INFO L225 Difference]: With dead ends: 220 [2018-11-10 05:17:04,376 INFO L226 Difference]: Without dead ends: 134 [2018-11-10 05:17:04,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-11-10 05:17:04,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-11-10 05:17:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2018-11-10 05:17:04,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-11-10 05:17:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2018-11-10 05:17:04,389 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 117 [2018-11-10 05:17:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:04,389 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2018-11-10 05:17:04,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 05:17:04,389 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2018-11-10 05:17:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-10 05:17:04,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:04,391 INFO L375 BasicCegarLoop]: trace histogram [36, 32, 32, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:04,391 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:04,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:04,391 INFO L82 PathProgramCache]: Analyzing trace with hash -210025646, now seen corresponding path program 8 times [2018-11-10 05:17:04,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:04,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:04,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:04,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-11-10 05:17:04,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:04,487 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:04,492 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:17:04,510 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:17:04,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:04,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1782 backedges. 686 proven. 100 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2018-11-10 05:17:04,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:04,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-11-10 05:17:04,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 05:17:04,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 05:17:04,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-11-10 05:17:04,624 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand 21 states. [2018-11-10 05:17:04,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:04,658 INFO L93 Difference]: Finished difference Result 241 states and 252 transitions. [2018-11-10 05:17:04,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 05:17:04,659 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 129 [2018-11-10 05:17:04,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:04,659 INFO L225 Difference]: With dead ends: 241 [2018-11-10 05:17:04,659 INFO L226 Difference]: Without dead ends: 146 [2018-11-10 05:17:04,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-11-10 05:17:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-10 05:17:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2018-11-10 05:17:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-11-10 05:17:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 146 transitions. [2018-11-10 05:17:04,672 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 146 transitions. Word has length 129 [2018-11-10 05:17:04,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:04,672 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 146 transitions. [2018-11-10 05:17:04,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 05:17:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 146 transitions. [2018-11-10 05:17:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-10 05:17:04,673 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:04,674 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 36, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:04,674 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:04,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:04,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1652018178, now seen corresponding path program 9 times [2018-11-10 05:17:04,674 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:04,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:04,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:04,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 851 proven. 126 refuted. 0 times theorem prover too weak. 1239 trivial. 0 not checked. [2018-11-10 05:17:04,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:04,778 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:04,783 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:17:04,814 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-11-10 05:17:04,814 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:04,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 854 proven. 126 refuted. 0 times theorem prover too weak. 1236 trivial. 0 not checked. [2018-11-10 05:17:04,907 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:04,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-11-10 05:17:04,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-10 05:17:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-10 05:17:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-11-10 05:17:04,908 INFO L87 Difference]: Start difference. First operand 142 states and 146 transitions. Second operand 23 states. [2018-11-10 05:17:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:04,970 INFO L93 Difference]: Finished difference Result 262 states and 273 transitions. [2018-11-10 05:17:04,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 05:17:04,970 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 141 [2018-11-10 05:17:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:04,971 INFO L225 Difference]: With dead ends: 262 [2018-11-10 05:17:04,971 INFO L226 Difference]: Without dead ends: 158 [2018-11-10 05:17:04,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-11-10 05:17:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-11-10 05:17:04,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2018-11-10 05:17:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-10 05:17:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 158 transitions. [2018-11-10 05:17:04,980 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 158 transitions. Word has length 141 [2018-11-10 05:17:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:04,980 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 158 transitions. [2018-11-10 05:17:04,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-10 05:17:04,980 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 158 transitions. [2018-11-10 05:17:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-10 05:17:04,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:04,982 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 40, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:04,982 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:04,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash -969563822, now seen corresponding path program 10 times [2018-11-10 05:17:04,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:04,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:04,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,983 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:04,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-11-10 05:17:05,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:05,085 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:05,090 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 05:17:05,112 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 05:17:05,112 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:05,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2698 backedges. 0 proven. 2078 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2018-11-10 05:17:05,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:05,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-11-10 05:17:05,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 05:17:05,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 05:17:05,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:17:05,214 INFO L87 Difference]: Start difference. First operand 154 states and 158 transitions. Second operand 13 states. [2018-11-10 05:17:05,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:05,254 INFO L93 Difference]: Finished difference Result 227 states and 233 transitions. [2018-11-10 05:17:05,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:17:05,255 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2018-11-10 05:17:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:05,256 INFO L225 Difference]: With dead ends: 227 [2018-11-10 05:17:05,256 INFO L226 Difference]: Without dead ends: 222 [2018-11-10 05:17:05,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2018-11-10 05:17:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-11-10 05:17:05,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 189. [2018-11-10 05:17:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-11-10 05:17:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 194 transitions. [2018-11-10 05:17:05,266 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 194 transitions. Word has length 153 [2018-11-10 05:17:05,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:05,267 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 194 transitions. [2018-11-10 05:17:05,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 05:17:05,267 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 194 transitions. [2018-11-10 05:17:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-10 05:17:05,269 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:05,269 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 50, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:05,269 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:05,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:05,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1779605514, now seen corresponding path program 11 times [2018-11-10 05:17:05,270 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:05,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:05,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:05,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:05,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-11-10 05:17:05,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:05,401 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:05,408 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 05:17:05,487 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-11-10 05:17:05,487 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:05,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 3460 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2018-11-10 05:17:05,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:05,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-10 05:17:05,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 05:17:05,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 05:17:05,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-11-10 05:17:05,635 INFO L87 Difference]: Start difference. First operand 189 states and 194 transitions. Second operand 15 states. [2018-11-10 05:17:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:05,698 INFO L93 Difference]: Finished difference Result 262 states and 269 transitions. [2018-11-10 05:17:05,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 05:17:05,699 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2018-11-10 05:17:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:05,701 INFO L225 Difference]: With dead ends: 262 [2018-11-10 05:17:05,701 INFO L226 Difference]: Without dead ends: 257 [2018-11-10 05:17:05,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-11-10 05:17:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-11-10 05:17:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 224. [2018-11-10 05:17:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2018-11-10 05:17:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 230 transitions. [2018-11-10 05:17:05,717 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 230 transitions. Word has length 188 [2018-11-10 05:17:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:05,718 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 230 transitions. [2018-11-10 05:17:05,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 05:17:05,718 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 230 transitions. [2018-11-10 05:17:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-10 05:17:05,719 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:05,720 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 60, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:05,720 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:05,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:05,720 INFO L82 PathProgramCache]: Analyzing trace with hash 388824786, now seen corresponding path program 12 times [2018-11-10 05:17:05,720 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:05,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:05,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:05,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:05,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-11-10 05:17:05,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:05,850 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:05,856 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 05:17:05,907 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-11-10 05:17:05,908 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:05,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6117 backedges. 0 proven. 5187 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2018-11-10 05:17:06,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:06,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-10 05:17:06,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 05:17:06,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 05:17:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2018-11-10 05:17:06,025 INFO L87 Difference]: Start difference. First operand 224 states and 230 transitions. Second operand 17 states. [2018-11-10 05:17:06,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:06,080 INFO L93 Difference]: Finished difference Result 297 states and 305 transitions. [2018-11-10 05:17:06,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 05:17:06,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 223 [2018-11-10 05:17:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:06,084 INFO L225 Difference]: With dead ends: 297 [2018-11-10 05:17:06,085 INFO L226 Difference]: Without dead ends: 292 [2018-11-10 05:17:06,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2018-11-10 05:17:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-11-10 05:17:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 259. [2018-11-10 05:17:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-11-10 05:17:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 266 transitions. [2018-11-10 05:17:06,106 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 266 transitions. Word has length 223 [2018-11-10 05:17:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:06,106 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 266 transitions. [2018-11-10 05:17:06,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 05:17:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 266 transitions. [2018-11-10 05:17:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-10 05:17:06,107 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:06,107 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 70, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:06,108 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:06,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:06,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1062399370, now seen corresponding path program 13 times [2018-11-10 05:17:06,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:06,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:06,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:06,109 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:06,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-11-10 05:17:06,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:06,280 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:06,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:06,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8344 backedges. 0 proven. 7259 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2018-11-10 05:17:06,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:06,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-10 05:17:06,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 05:17:06,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 05:17:06,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-11-10 05:17:06,488 INFO L87 Difference]: Start difference. First operand 259 states and 266 transitions. Second operand 19 states. [2018-11-10 05:17:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:06,541 INFO L93 Difference]: Finished difference Result 332 states and 341 transitions. [2018-11-10 05:17:06,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 05:17:06,541 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 258 [2018-11-10 05:17:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:06,543 INFO L225 Difference]: With dead ends: 332 [2018-11-10 05:17:06,543 INFO L226 Difference]: Without dead ends: 327 [2018-11-10 05:17:06,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2018-11-10 05:17:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-11-10 05:17:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 294. [2018-11-10 05:17:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2018-11-10 05:17:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 302 transitions. [2018-11-10 05:17:06,558 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 302 transitions. Word has length 258 [2018-11-10 05:17:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:06,558 INFO L481 AbstractCegarLoop]: Abstraction has 294 states and 302 transitions. [2018-11-10 05:17:06,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 05:17:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 302 transitions. [2018-11-10 05:17:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-10 05:17:06,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:06,559 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 80, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:06,559 INFO L424 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:06,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash -790873006, now seen corresponding path program 14 times [2018-11-10 05:17:06,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:06,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:06,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:06,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:17:06,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-11-10 05:17:06,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:06,744 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:06,749 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 05:17:06,788 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 05:17:06,788 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:06,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10916 backedges. 0 proven. 9676 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2018-11-10 05:17:06,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:06,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-11-10 05:17:06,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 05:17:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 05:17:06,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-11-10 05:17:06,980 INFO L87 Difference]: Start difference. First operand 294 states and 302 transitions. Second operand 21 states. [2018-11-10 05:17:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:07,038 INFO L93 Difference]: Finished difference Result 367 states and 377 transitions. [2018-11-10 05:17:07,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 05:17:07,039 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 293 [2018-11-10 05:17:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:07,040 INFO L225 Difference]: With dead ends: 367 [2018-11-10 05:17:07,040 INFO L226 Difference]: Without dead ends: 362 [2018-11-10 05:17:07,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2018-11-10 05:17:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2018-11-10 05:17:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 329. [2018-11-10 05:17:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-10 05:17:07,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 338 transitions. [2018-11-10 05:17:07,063 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 338 transitions. Word has length 293 [2018-11-10 05:17:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:07,063 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 338 transitions. [2018-11-10 05:17:07,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 05:17:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 338 transitions. [2018-11-10 05:17:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-10 05:17:07,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:07,064 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 90, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:07,065 INFO L424 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:07,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:07,065 INFO L82 PathProgramCache]: Analyzing trace with hash 547939574, now seen corresponding path program 15 times [2018-11-10 05:17:07,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:07,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:07,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:07,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:07,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-11-10 05:17:07,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:17:07,302 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/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 05:17:07,309 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 05:17:07,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-11-10 05:17:07,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 05:17:07,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:17:07,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13833 backedges. 0 proven. 12438 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2018-11-10 05:17:07,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:17:07,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2018-11-10 05:17:07,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-10 05:17:07,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-10 05:17:07,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2018-11-10 05:17:07,684 INFO L87 Difference]: Start difference. First operand 329 states and 338 transitions. Second operand 23 states. [2018-11-10 05:17:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:07,801 INFO L93 Difference]: Finished difference Result 402 states and 413 transitions. [2018-11-10 05:17:07,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 05:17:07,801 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 328 [2018-11-10 05:17:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:07,803 INFO L225 Difference]: With dead ends: 402 [2018-11-10 05:17:07,803 INFO L226 Difference]: Without dead ends: 397 [2018-11-10 05:17:07,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=212, Invalid=340, Unknown=0, NotChecked=0, Total=552 [2018-11-10 05:17:07,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-11-10 05:17:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 364. [2018-11-10 05:17:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-11-10 05:17:07,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 374 transitions. [2018-11-10 05:17:07,835 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 374 transitions. Word has length 328 [2018-11-10 05:17:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:07,836 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 374 transitions. [2018-11-10 05:17:07,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-10 05:17:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 374 transitions. [2018-11-10 05:17:07,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-10 05:17:07,839 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:17:07,840 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 100, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:17:07,840 INFO L424 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:17:07,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:17:07,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1390107090, now seen corresponding path program 16 times [2018-11-10 05:17:07,840 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:17:07,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:17:07,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:07,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 05:17:07,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:17:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:17:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17095 backedges. 17077 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 05:17:10,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:17:10,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2018-11-10 05:17:10,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-11-10 05:17:10,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-11-10 05:17:10,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=5663, Unknown=0, NotChecked=0, Total=10920 [2018-11-10 05:17:10,657 INFO L87 Difference]: Start difference. First operand 364 states and 374 transitions. Second operand 105 states. [2018-11-10 05:17:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:17:12,049 INFO L93 Difference]: Finished difference Result 14899 states and 15359 transitions. [2018-11-10 05:17:12,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-11-10 05:17:12,049 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 363 [2018-11-10 05:17:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:17:12,050 INFO L225 Difference]: With dead ends: 14899 [2018-11-10 05:17:12,050 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 05:17:12,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2018-11-10 05:17:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 05:17:12,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 05:17:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 05:17:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 05:17:12,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 363 [2018-11-10 05:17:12,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:17:12,066 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 05:17:12,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-11-10 05:17:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 05:17:12,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 05:17:12,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 05:17:13,310 WARN L179 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-11-10 05:17:17,265 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,292 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,298 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,385 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,446 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,568 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,630 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,702 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,705 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,768 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,776 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,781 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,843 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,915 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,932 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:17,938 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,066 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,117 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,308 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,527 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,551 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,787 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,890 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:18,907 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,014 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,216 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,248 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,331 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,517 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,639 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,718 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,751 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,801 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:19,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,299 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,332 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,502 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,566 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,576 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,968 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:20,989 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,510 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,689 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,740 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,838 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:21,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,226 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,589 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,602 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,614 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,797 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:22,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,689 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,731 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,821 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:23,862 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,025 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,060 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,281 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,289 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:24,995 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:25,018 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:25,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:26,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,183 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,434 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,604 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,690 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:27,859 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:28,162 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:28,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:28,784 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:29,102 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:29,344 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:30,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:30,531 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:31,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:31,314 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:31,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:31,699 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:32,213 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:32,957 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:34,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:34,380 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:35,860 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:36,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:40,476 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:40,668 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:43,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:44,016 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:45,747 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:46,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:47,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:50,509 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:51,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:51,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:55,031 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:17:56,961 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 05:18:00,982 WARN L179 SmtUtils]: Spent 47.66 s on a formula simplification. DAG size of input: 5154 DAG size of output: 1799 [2018-11-10 05:18:04,168 WARN L179 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 664 DAG size of output: 59 [2018-11-10 05:18:34,991 WARN L179 SmtUtils]: Spent 30.81 s on a formula simplification. DAG size of input: 1775 DAG size of output: 363 [2018-11-10 05:18:34,993 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 05:18:34,994 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 24) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L421 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (let ((.cse0 (<= 10 main_~m~0)) (.cse1 (<= 10 main_~n~0))) (or (and (<= 30 main_~k~0) (<= main_~i~0 3) .cse0 .cse1) (and .cse0 (<= 100 main_~k~0) .cse1) (and .cse0 (<= 40 main_~k~0) (<= main_~i~0 4) .cse1) (and .cse0 (<= 0 main_~k~0) (<= main_~i~0 0) .cse1) (and .cse0 (<= 60 main_~k~0) (<= main_~i~0 6) .cse1) (and .cse0 (<= 10 main_~k~0) (<= main_~i~0 1) .cse1) (and (<= 80 main_~k~0) .cse0 (<= main_~i~0 8) .cse1) (and (<= 50 main_~k~0) .cse0 (<= main_~i~0 5) .cse1) (and .cse0 (<= main_~i~0 9) .cse1 (<= 90 main_~k~0)) (and (<= 70 main_~k~0) .cse0 (<= main_~i~0 7) .cse1) (and .cse0 (<= 20 main_~k~0) (<= main_~i~0 2) .cse1))) [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 24) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L421 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (and (<= 10 main_~m~0) (<= 100 main_~k~0) (<= 10 main_~n~0)) [2018-11-10 05:18:34,994 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 24) the Hoare annotation is: true [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-10 05:18:34,994 INFO L425 ceAbstractionStarter]: For program point L18-1(lines 18 20) no Hoare annotation was computed. [2018-11-10 05:18:34,995 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-11-10 05:18:34,995 INFO L425 ceAbstractionStarter]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2018-11-10 05:18:34,995 INFO L421 ceAbstractionStarter]: At program point L18-4(lines 18 20) the Hoare annotation is: (let ((.cse4 (<= main_~j~0 5)) (.cse0 (<= 10 main_~m~0)) (.cse32 (<= main_~j~0 6))) (let ((.cse14 (<= main_~j~0 8)) (.cse21 (<= main_~j~0 2)) (.cse25 (<= main_~j~0 3)) (.cse2 (<= main_~j~0 9)) (.cse38 (<= main_~j~0 1)) (.cse18 (<= main_~j~0 4)) (.cse11 (<= main_~j~0 0)) (.cse40 (and .cse0 .cse32)) (.cse36 (and .cse4 .cse0)) (.cse3 (<= 10 main_~n~0))) (let ((.cse30 (<= 80 main_~k~0)) (.cse22 (<= 70 main_~k~0)) (.cse28 (and .cse36 .cse3)) (.cse16 (and .cse40 .cse3)) (.cse27 (<= 60 main_~k~0)) (.cse31 (and .cse0 .cse11)) (.cse37 (<= 20 main_~k~0)) (.cse29 (and .cse0 .cse18)) (.cse23 (<= main_~i~0 5)) (.cse13 (and .cse0 .cse38 .cse3)) (.cse12 (<= main_~i~0 8)) (.cse39 (<= 90 main_~k~0)) (.cse9 (<= 10 main_~k~0)) (.cse35 (<= 50 main_~k~0)) (.cse17 (<= main_~i~0 7)) (.cse26 (and .cse0 .cse2)) (.cse33 (and .cse0 .cse25 .cse3)) (.cse34 (<= 30 main_~k~0)) (.cse19 (<= main_~i~0 0)) (.cse20 (<= main_~i~0 3)) (.cse5 (and .cse0 .cse21 .cse3)) (.cse10 (<= main_~i~0 1)) (.cse1 (<= main_~i~0 2)) (.cse8 (<= main_~j~0 7)) (.cse24 (and .cse14 .cse0)) (.cse6 (<= main_~i~0 6)) (.cse7 (<= (+ main_~i~0 1) main_~n~0)) (.cse41 (<= 40 main_~k~0)) (.cse15 (<= main_~i~0 4))) (or (and .cse0 (<= 29 main_~k~0) .cse1 .cse2 .cse3) (and .cse4 .cse0 (<= 25 main_~k~0) .cse1 .cse3) (and (<= 62 main_~k~0) .cse5 .cse6) (and (and .cse7 .cse0 .cse8 .cse3) (<= 97 main_~k~0)) (and .cse0 .cse9 .cse10 .cse11 .cse3) (and (<= 81 main_~k~0) .cse12 .cse13) (and .cse5 (<= 82 main_~k~0) .cse12) (and .cse14 .cse0 .cse15 (<= 48 main_~k~0) .cse3) (and .cse16 .cse17 (<= 76 main_~k~0)) (and .cse0 .cse15 .cse18 (<= 44 main_~k~0) .cse3) (and .cse0 (<= 7 main_~k~0) .cse8 .cse19 .cse3) (and .cse4 .cse0 (<= 45 main_~k~0) .cse15 .cse3) (and .cse20 .cse0 .cse21 (<= 32 main_~k~0) .cse3) (and .cse22 .cse0 .cse6 .cse3) (and (<= 2 main_~k~0) .cse0 .cse21 .cse19 .cse3) (and .cse23 .cse13 (<= 51 main_~k~0)) (and (<= 58 main_~k~0) .cse23 .cse3 .cse24) (and .cse0 .cse25 .cse15 (<= 43 main_~k~0) .cse3) (and (<= 89 main_~k~0) .cse26 .cse12 .cse3) (and (<= 66 main_~k~0) .cse16 .cse6) (and .cse0 .cse27 .cse23 .cse3) (and (<= 95 main_~k~0) (and .cse7 .cse28)) (and .cse0 .cse10 (<= 17 main_~k~0) .cse8 .cse3) (and (<= 33 main_~k~0) .cse20 .cse0 .cse25 .cse3) (and .cse29 (<= 74 main_~k~0) .cse17 .cse3) (and .cse30 .cse31 .cse12 .cse3) (and .cse0 .cse1 .cse18 .cse3 (<= 24 main_~k~0)) (and .cse14 .cse0 (<= 8 main_~k~0) .cse19 .cse3) (and (<= 23 main_~k~0) .cse0 .cse25 .cse1 .cse3) (and .cse0 .cse15 .cse2 (<= 49 main_~k~0) .cse3) (and (<= 86 main_~k~0) .cse16 .cse12) (and .cse5 .cse17 (<= 72 main_~k~0)) (and .cse12 .cse3 .cse24 (<= 88 main_~k~0)) (and .cse0 (<= 26 main_~k~0) .cse1 .cse3 .cse32) (and (and .cse29 .cse7 .cse3) (<= 94 main_~k~0)) (and .cse13 .cse15 (<= 41 main_~k~0)) (and .cse33 .cse17 (<= 73 main_~k~0)) (and .cse0 .cse25 (<= 3 main_~k~0) .cse19 .cse3) (and .cse34 .cse0 .cse1 .cse3) (and .cse30 .cse0 .cse17 .cse3) (and .cse0 .cse18 .cse19 (<= 4 main_~k~0) .cse3) (and .cse26 .cse17 (<= 79 main_~k~0) .cse3) (and (<= 37 main_~k~0) .cse20 .cse0 .cse8 .cse3) (and .cse0 .cse23 .cse8 .cse3 (<= 57 main_~k~0)) (and (<= 93 main_~k~0) (and .cse7 .cse33)) (and .cse20 .cse0 (<= 36 main_~k~0) .cse3 .cse32) (and (<= 64 main_~k~0) .cse29 .cse6 .cse3) (and .cse35 .cse23 .cse3 .cse31) (and .cse22 .cse31 .cse17 .cse3) (and .cse0 .cse15 (<= 46 main_~k~0) .cse3 .cse32) (and (<= 85 main_~k~0) .cse12 .cse28) (and (<= 16 main_~k~0) .cse0 .cse10 .cse3 .cse32) (and (<= 59 main_~k~0) .cse23 .cse26 .cse3) (and .cse0 (<= 0 main_~k~0) .cse11 .cse19 .cse3) (and (<= 75 main_~k~0) .cse36 .cse17 .cse3) (and .cse20 .cse0 .cse18 (<= 34 main_~k~0) .cse3) (and .cse0 .cse10 .cse21 (<= 12 main_~k~0) .cse3) (and (<= 96 main_~k~0) (and .cse7 .cse16)) (and .cse0 .cse37 .cse1 .cse11 .cse3) (and .cse6 .cse13 (<= 61 main_~k~0)) (and (<= 54 main_~k~0) .cse0 .cse23 .cse18 .cse3) (and (<= 91 main_~k~0) (and .cse7 .cse13)) (and .cse14 (<= 28 main_~k~0) .cse0 .cse1 .cse3) (and .cse0 (<= 6 main_~k~0) .cse19 .cse3 .cse32) (and .cse20 .cse4 .cse0 (<= 35 main_~k~0) .cse3) (and .cse23 (<= 52 main_~k~0) .cse5) (and .cse0 .cse10 .cse2 .cse3 (<= 19 main_~k~0)) (and .cse4 .cse0 (<= 15 main_~k~0) .cse10 .cse3) (and (<= 53 main_~k~0) .cse0 .cse25 .cse23 .cse3) (and .cse0 (<= 9 main_~k~0) .cse2 .cse19 .cse3) (and (<= 21 main_~k~0) .cse0 .cse38 .cse1 .cse3) (and .cse27 .cse6 .cse3 .cse31) (and .cse20 .cse0 (<= 39 main_~k~0) .cse2 .cse3) (and (and .cse7 .cse31 .cse3) .cse39) (and (<= 83 main_~k~0) .cse33 .cse12) (and .cse0 .cse12 .cse8 (<= 87 main_~k~0) .cse3) (and .cse0 .cse25 .cse10 (<= 13 main_~k~0) .cse3) (and .cse0 .cse37 .cse10 .cse3) (and .cse0 .cse15 (<= 47 main_~k~0) .cse8 .cse3) (and (<= 69 main_~k~0) .cse26 .cse6 .cse3) (and .cse36 (<= 55 main_~k~0) .cse23 .cse3) (and .cse29 (<= 84 main_~k~0) .cse12 .cse3) (and (<= 56 main_~k~0) .cse23 .cse40 .cse3) (and .cse0 .cse15 .cse21 (<= 42 main_~k~0) .cse3) (and (<= 67 main_~k~0) .cse0 .cse8 .cse6 .cse3) (and (<= 71 main_~k~0) .cse13 .cse17) (and .cse0 .cse12 .cse3 .cse39) (and .cse20 .cse0 .cse41 .cse3) (and .cse14 .cse0 (<= 18 main_~k~0) .cse10 .cse3) (and .cse0 .cse9 .cse19 .cse3) (and .cse0 .cse8 .cse17 (<= 77 main_~k~0) .cse3) (and .cse35 .cse0 .cse15 .cse3) (and (<= 78 main_~k~0) .cse17 .cse3 .cse24) (and (<= 99 main_~k~0) (and .cse7 .cse26 .cse3)) (and .cse0 .cse38 .cse19 .cse3 (<= 1 main_~k~0)) (and .cse20 .cse0 .cse38 .cse3 (<= 31 main_~k~0)) (and .cse0 (<= 22 main_~k~0) .cse1 .cse21 .cse3) (and .cse33 (<= 63 main_~k~0) .cse6) (and (<= 68 main_~k~0) .cse6 .cse3 .cse24) (and (<= 11 main_~k~0) .cse0 .cse38 .cse10 .cse3) (and .cse34 .cse20 .cse0 .cse11 .cse3) (and .cse4 .cse0 (<= 5 main_~k~0) .cse19 .cse3) (and .cse20 .cse14 .cse0 (<= 38 main_~k~0) .cse3) (and (and .cse5 .cse7) (<= 92 main_~k~0)) (and (<= 14 main_~k~0) .cse0 .cse10 .cse18 .cse3) (and .cse0 .cse1 .cse8 .cse3 (<= 27 main_~k~0)) (and (and .cse7 .cse3 .cse24) (<= 98 main_~k~0)) (and .cse36 (<= 65 main_~k~0) .cse6 .cse3) (and (and .cse7 .cse0 .cse3) (<= 100 main_~k~0)) (and .cse0 .cse41 .cse15 .cse11 .cse3))))) [2018-11-10 05:18:34,995 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-10 05:18:34,996 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-10 05:18:34,996 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-10 05:18:34,996 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-10 05:18:34,996 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-10 05:18:34,996 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-10 05:18:35,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:18:35 BoogieIcfgContainer [2018-11-10 05:18:35,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:18:35,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:18:35,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:18:35,021 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:18:35,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:17:01" (3/4) ... [2018-11-10 05:18:35,026 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 05:18:35,032 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 05:18:35,032 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 05:18:35,032 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 05:18:35,035 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-10 05:18:35,035 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 05:18:35,035 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 05:18:35,065 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_62d71853-4da4-4757-8e39-f1e62ce4f52c/bin-2019/uautomizer/witness.graphml [2018-11-10 05:18:35,065 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:18:35,066 INFO L168 Benchmark]: Toolchain (without parser) took 93707.01 ms. Allocated memory was 1.0 GB in the beginning and 4.9 GB in the end (delta: 3.9 GB). Free memory was 953.8 MB in the beginning and 4.6 GB in the end (delta: -3.7 GB). Peak memory consumption was 209.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:35,066 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:18:35,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 942.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:35,067 INFO L168 Benchmark]: Boogie Preprocessor took 24.65 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:18:35,067 INFO L168 Benchmark]: RCFGBuilder took 199.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -206.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 05:18:35,068 INFO L168 Benchmark]: TraceAbstraction took 93304.21 ms. Allocated memory was 1.2 GB in the beginning and 4.9 GB in the end (delta: 3.7 GB). Free memory was 1.1 GB in the beginning and 4.6 GB in the end (delta: -3.5 GB). Peak memory consumption was 4.1 GB. Max. memory is 11.5 GB. [2018-11-10 05:18:35,068 INFO L168 Benchmark]: Witness Printer took 45.01 ms. Allocated memory is still 4.9 GB. Free memory is still 4.6 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:18:35,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 942.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.65 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 199.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -206.6 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 93304.21 ms. Allocated memory was 1.2 GB in the beginning and 4.9 GB in the end (delta: 3.7 GB). Free memory was 1.1 GB in the beginning and 4.6 GB in the end (delta: -3.5 GB). Peak memory consumption was 4.1 GB. Max. memory is 11.5 GB. * Witness Printer took 45.01 ms. Allocated memory is still 4.9 GB. Free memory is still 4.6 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((((((((((30 <= k && i <= 3) && 10 <= m) && 10 <= n) || ((10 <= m && 100 <= k) && 10 <= n)) || (((10 <= m && 40 <= k) && i <= 4) && 10 <= n)) || (((10 <= m && 0 <= k) && i <= 0) && 10 <= n)) || (((10 <= m && 60 <= k) && i <= 6) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 1) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 8) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 5) && 10 <= n)) || (((10 <= m && i <= 9) && 10 <= n) && 90 <= k)) || (((70 <= k && 10 <= m) && i <= 7) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 2) && 10 <= n) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 29 <= k) && i <= 2) && j <= 9) && 10 <= n) || ((((j <= 5 && 10 <= m) && 25 <= k) && i <= 2) && 10 <= n)) || ((62 <= k && (10 <= m && j <= 2) && 10 <= n) && i <= 6)) || ((((i + 1 <= n && 10 <= m) && j <= 7) && 10 <= n) && 97 <= k)) || ((((10 <= m && 10 <= k) && i <= 1) && j <= 0) && 10 <= n)) || ((81 <= k && i <= 8) && (10 <= m && j <= 1) && 10 <= n)) || ((((10 <= m && j <= 2) && 10 <= n) && 82 <= k) && i <= 8)) || ((((j <= 8 && 10 <= m) && i <= 4) && 48 <= k) && 10 <= n)) || ((((10 <= m && j <= 6) && 10 <= n) && i <= 7) && 76 <= k)) || ((((10 <= m && i <= 4) && j <= 4) && 44 <= k) && 10 <= n)) || ((((10 <= m && 7 <= k) && j <= 7) && i <= 0) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 45 <= k) && i <= 4) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 2) && 32 <= k) && 10 <= n)) || (((70 <= k && 10 <= m) && i <= 6) && 10 <= n)) || ((((2 <= k && 10 <= m) && j <= 2) && i <= 0) && 10 <= n)) || ((i <= 5 && (10 <= m && j <= 1) && 10 <= n) && 51 <= k)) || (((58 <= k && i <= 5) && 10 <= n) && j <= 8 && 10 <= m)) || ((((10 <= m && j <= 3) && i <= 4) && 43 <= k) && 10 <= n)) || (((89 <= k && 10 <= m && j <= 9) && i <= 8) && 10 <= n)) || ((66 <= k && (10 <= m && j <= 6) && 10 <= n) && i <= 6)) || (((10 <= m && 60 <= k) && i <= 5) && 10 <= n)) || (95 <= k && i + 1 <= n && (j <= 5 && 10 <= m) && 10 <= n)) || ((((10 <= m && i <= 1) && 17 <= k) && j <= 7) && 10 <= n)) || ((((33 <= k && i <= 3) && 10 <= m) && j <= 3) && 10 <= n)) || ((((10 <= m && j <= 4) && 74 <= k) && i <= 7) && 10 <= n)) || (((80 <= k && 10 <= m && j <= 0) && i <= 8) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 4) && 10 <= n) && 24 <= k)) || ((((j <= 8 && 10 <= m) && 8 <= k) && i <= 0) && 10 <= n)) || ((((23 <= k && 10 <= m) && j <= 3) && i <= 2) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 9) && 49 <= k) && 10 <= n)) || ((86 <= k && (10 <= m && j <= 6) && 10 <= n) && i <= 8)) || ((((10 <= m && j <= 2) && 10 <= n) && i <= 7) && 72 <= k)) || (((i <= 8 && 10 <= n) && j <= 8 && 10 <= m) && 88 <= k)) || ((((10 <= m && 26 <= k) && i <= 2) && 10 <= n) && j <= 6)) || ((((10 <= m && j <= 4) && i + 1 <= n) && 10 <= n) && 94 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 3) && 10 <= n) && i <= 7) && 73 <= k)) || ((((10 <= m && j <= 3) && 3 <= k) && i <= 0) && 10 <= n)) || (((30 <= k && 10 <= m) && i <= 2) && 10 <= n)) || (((80 <= k && 10 <= m) && i <= 7) && 10 <= n)) || ((((10 <= m && j <= 4) && i <= 0) && 4 <= k) && 10 <= n)) || ((((10 <= m && j <= 9) && i <= 7) && 79 <= k) && 10 <= n)) || ((((37 <= k && i <= 3) && 10 <= m) && j <= 7) && 10 <= n)) || ((((10 <= m && i <= 5) && j <= 7) && 10 <= n) && 57 <= k)) || (93 <= k && i + 1 <= n && (10 <= m && j <= 3) && 10 <= n)) || ((((i <= 3 && 10 <= m) && 36 <= k) && 10 <= n) && j <= 6)) || (((64 <= k && 10 <= m && j <= 4) && i <= 6) && 10 <= n)) || (((50 <= k && i <= 5) && 10 <= n) && 10 <= m && j <= 0)) || (((70 <= k && 10 <= m && j <= 0) && i <= 7) && 10 <= n)) || ((((10 <= m && i <= 4) && 46 <= k) && 10 <= n) && j <= 6)) || ((85 <= k && i <= 8) && (j <= 5 && 10 <= m) && 10 <= n)) || ((((16 <= k && 10 <= m) && i <= 1) && 10 <= n) && j <= 6)) || (((59 <= k && i <= 5) && 10 <= m && j <= 9) && 10 <= n)) || ((((10 <= m && 0 <= k) && j <= 0) && i <= 0) && 10 <= n)) || (((75 <= k && j <= 5 && 10 <= m) && i <= 7) && 10 <= n)) || ((((i <= 3 && 10 <= m) && j <= 4) && 34 <= k) && 10 <= n)) || ((((10 <= m && i <= 1) && j <= 2) && 12 <= k) && 10 <= n)) || (96 <= k && i + 1 <= n && (10 <= m && j <= 6) && 10 <= n)) || ((((10 <= m && 20 <= k) && i <= 2) && j <= 0) && 10 <= n)) || ((i <= 6 && (10 <= m && j <= 1) && 10 <= n) && 61 <= k)) || ((((54 <= k && 10 <= m) && i <= 5) && j <= 4) && 10 <= n)) || (91 <= k && i + 1 <= n && (10 <= m && j <= 1) && 10 <= n)) || ((((j <= 8 && 28 <= k) && 10 <= m) && i <= 2) && 10 <= n)) || ((((10 <= m && 6 <= k) && i <= 0) && 10 <= n) && j <= 6)) || ((((i <= 3 && j <= 5) && 10 <= m) && 35 <= k) && 10 <= n)) || ((i <= 5 && 52 <= k) && (10 <= m && j <= 2) && 10 <= n)) || ((((10 <= m && i <= 1) && j <= 9) && 10 <= n) && 19 <= k)) || ((((j <= 5 && 10 <= m) && 15 <= k) && i <= 1) && 10 <= n)) || ((((53 <= k && 10 <= m) && j <= 3) && i <= 5) && 10 <= n)) || ((((10 <= m && 9 <= k) && j <= 9) && i <= 0) && 10 <= n)) || ((((21 <= k && 10 <= m) && j <= 1) && i <= 2) && 10 <= n)) || (((60 <= k && i <= 6) && 10 <= n) && 10 <= m && j <= 0)) || ((((i <= 3 && 10 <= m) && 39 <= k) && j <= 9) && 10 <= n)) || (((i + 1 <= n && 10 <= m && j <= 0) && 10 <= n) && 90 <= k)) || ((83 <= k && (10 <= m && j <= 3) && 10 <= n) && i <= 8)) || ((((10 <= m && i <= 8) && j <= 7) && 87 <= k) && 10 <= n)) || ((((10 <= m && j <= 3) && i <= 1) && 13 <= k) && 10 <= n)) || (((10 <= m && 20 <= k) && i <= 1) && 10 <= n)) || ((((10 <= m && i <= 4) && 47 <= k) && j <= 7) && 10 <= n)) || (((69 <= k && 10 <= m && j <= 9) && i <= 6) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 55 <= k) && i <= 5) && 10 <= n)) || ((((10 <= m && j <= 4) && 84 <= k) && i <= 8) && 10 <= n)) || (((56 <= k && i <= 5) && 10 <= m && j <= 6) && 10 <= n)) || ((((10 <= m && i <= 4) && j <= 2) && 42 <= k) && 10 <= n)) || ((((67 <= k && 10 <= m) && j <= 7) && i <= 6) && 10 <= n)) || ((71 <= k && (10 <= m && j <= 1) && 10 <= n) && i <= 7)) || (((10 <= m && i <= 8) && 10 <= n) && 90 <= k)) || (((i <= 3 && 10 <= m) && 40 <= k) && 10 <= n)) || ((((j <= 8 && 10 <= m) && 18 <= k) && i <= 1) && 10 <= n)) || (((10 <= m && 10 <= k) && i <= 0) && 10 <= n)) || ((((10 <= m && j <= 7) && i <= 7) && 77 <= k) && 10 <= n)) || (((50 <= k && 10 <= m) && i <= 4) && 10 <= n)) || (((78 <= k && i <= 7) && 10 <= n) && j <= 8 && 10 <= m)) || (99 <= k && (i + 1 <= n && 10 <= m && j <= 9) && 10 <= n)) || ((((10 <= m && j <= 1) && i <= 0) && 10 <= n) && 1 <= k)) || ((((i <= 3 && 10 <= m) && j <= 1) && 10 <= n) && 31 <= k)) || ((((10 <= m && 22 <= k) && i <= 2) && j <= 2) && 10 <= n)) || ((((10 <= m && j <= 3) && 10 <= n) && 63 <= k) && i <= 6)) || (((68 <= k && i <= 6) && 10 <= n) && j <= 8 && 10 <= m)) || ((((11 <= k && 10 <= m) && j <= 1) && i <= 1) && 10 <= n)) || ((((30 <= k && i <= 3) && 10 <= m) && j <= 0) && 10 <= n)) || ((((j <= 5 && 10 <= m) && 5 <= k) && i <= 0) && 10 <= n)) || ((((i <= 3 && j <= 8) && 10 <= m) && 38 <= k) && 10 <= n)) || ((((10 <= m && j <= 2) && 10 <= n) && i + 1 <= n) && 92 <= k)) || ((((14 <= k && 10 <= m) && i <= 1) && j <= 4) && 10 <= n)) || ((((10 <= m && i <= 2) && j <= 7) && 10 <= n) && 27 <= k)) || (((i + 1 <= n && 10 <= n) && j <= 8 && 10 <= m) && 98 <= k)) || ((((j <= 5 && 10 <= m) && 65 <= k) && i <= 6) && 10 <= n)) || (((i + 1 <= n && 10 <= m) && 10 <= n) && 100 <= k)) || ((((10 <= m && 40 <= k) && i <= 4) && j <= 0) && 10 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. SAFE Result, 93.2s OverallTime, 19 OverallIterations, 110 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 82.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 867 SDtfs, 1779 SDslu, 3208 SDs, 0 SdLazy, 1143 SolverSat, 303 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2456 GetRequests, 2061 SyntacticMatches, 0 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 285 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 26 PreInvPairs, 5143 NumberOfFragments, 1970 HoareAnnotationTreeSize, 26 FomulaSimplifications, 6246897 FormulaSimplificationTreeSizeReduction, 48.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 72380 FormulaSimplificationTreeSizeReductionInter, 33.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 4676 NumberOfCodeBlocks, 4528 NumberOfCodeBlocksAsserted, 220 NumberOfCheckSat, 4642 ConstructedInterpolants, 0 QuantifiedInterpolants, 4982144 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4015 ConjunctsInSsa, 124 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 41479/122963 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...