./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:34:04,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 12:34:04,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 12:34:04,404 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 12:34:04,404 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 12:34:04,405 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 12:34:04,406 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 12:34:04,407 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 12:34:04,408 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 12:34:04,408 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 12:34:04,409 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 12:34:04,409 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 12:34:04,410 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 12:34:04,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 12:34:04,411 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 12:34:04,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 12:34:04,412 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 12:34:04,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 12:34:04,415 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 12:34:04,416 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 12:34:04,417 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 12:34:04,417 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 12:34:04,419 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 12:34:04,419 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 12:34:04,419 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 12:34:04,420 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 12:34:04,421 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 12:34:04,422 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 12:34:04,422 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 12:34:04,423 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 12:34:04,423 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 12:34:04,424 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 12:34:04,424 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 12:34:04,424 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 12:34:04,425 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 12:34:04,425 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 12:34:04,425 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-10 12:34:04,435 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 12:34:04,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 12:34:04,436 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 12:34:04,436 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 12:34:04,437 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 12:34:04,437 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 12:34:04,437 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 12:34:04,437 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 12:34:04,437 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 12:34:04,437 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 12:34:04,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 12:34:04,439 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 12:34:04,439 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 12:34:04,439 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 12:34:04,439 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 12:34:04,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 12:34:04,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 12:34:04,440 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 12:34:04,440 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 12:34:04,440 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 12:34:04,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 12:34:04,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 12:34:04,440 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_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5562cc301d5faa8ad8777fb25a4973bec89fa1c5 [2018-11-10 12:34:04,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 12:34:04,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 12:34:04,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 12:34:04,477 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 12:34:04,477 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 12:34:04,478 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c [2018-11-10 12:34:04,523 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/data/2f33e3e5d/a062418fd2ca4280b85952cfee462d4b/FLAG440242a37 [2018-11-10 12:34:04,842 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 12:34:04,842 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/sv-benchmarks/c/termination-numeric/recHanoi02_true-termination_true-no-overflow.c [2018-11-10 12:34:04,846 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/data/2f33e3e5d/a062418fd2ca4280b85952cfee462d4b/FLAG440242a37 [2018-11-10 12:34:04,854 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/data/2f33e3e5d/a062418fd2ca4280b85952cfee462d4b [2018-11-10 12:34:04,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 12:34:04,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 12:34:04,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 12:34:04,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 12:34:04,861 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 12:34:04,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:04,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a3a1b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04, skipping insertion in model container [2018-11-10 12:34:04,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:04,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 12:34:04,880 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 12:34:04,966 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:34:04,968 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 12:34:04,978 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 12:34:04,986 INFO L193 MainTranslator]: Completed translation [2018-11-10 12:34:04,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04 WrapperNode [2018-11-10 12:34:04,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 12:34:04,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 12:34:04,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 12:34:04,987 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 12:34:04,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:04,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:05,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:05,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:05,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:05,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:05,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... [2018-11-10 12:34:05,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 12:34:05,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 12:34:05,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 12:34:05,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 12:34:05,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:05,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 12:34:05,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 12:34:05,093 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-11-10 12:34:05,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 12:34:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 12:34:05,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 12:34:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-11-10 12:34:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 12:34:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 12:34:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 12:34:05,217 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 12:34:05,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:34:05 BoogieIcfgContainer [2018-11-10 12:34:05,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 12:34:05,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 12:34:05,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 12:34:05,220 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 12:34:05,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:34:04" (1/3) ... [2018-11-10 12:34:05,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f1408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:34:05, skipping insertion in model container [2018-11-10 12:34:05,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:34:04" (2/3) ... [2018-11-10 12:34:05,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f1408c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:34:05, skipping insertion in model container [2018-11-10 12:34:05,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:34:05" (3/3) ... [2018-11-10 12:34:05,223 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02_true-termination_true-no-overflow.c [2018-11-10 12:34:05,229 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 12:34:05,234 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-10 12:34:05,246 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-10 12:34:05,264 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 12:34:05,265 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 12:34:05,265 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 12:34:05,265 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 12:34:05,265 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 12:34:05,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 12:34:05,265 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 12:34:05,265 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 12:34:05,266 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 12:34:05,280 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-10 12:34:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-10 12:34:05,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:05,286 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:05,288 INFO L424 AbstractCegarLoop]: === Iteration 1 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:05,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:05,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1002909108, now seen corresponding path program 1 times [2018-11-10 12:34:05,295 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:05,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:05,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:05,414 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 12:34:05,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:34:05,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:34:05,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:34:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:34:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:34:05,432 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-11-10 12:34:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:05,491 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-10 12:34:05,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 12:34:05,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-10 12:34:05,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:05,498 INFO L225 Difference]: With dead ends: 38 [2018-11-10 12:34:05,498 INFO L226 Difference]: Without dead ends: 24 [2018-11-10 12:34:05,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:34:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-10 12:34:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-10 12:34:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-10 12:34:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-10 12:34:05,531 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2018-11-10 12:34:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:05,531 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-10 12:34:05,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:34:05,531 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-10 12:34:05,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-10 12:34:05,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:05,532 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:05,532 INFO L424 AbstractCegarLoop]: === Iteration 2 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:05,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1025411315, now seen corresponding path program 1 times [2018-11-10 12:34:05,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:05,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:05,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:05,572 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 12:34:05,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:34:05,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 12:34:05,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 12:34:05,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 12:34:05,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 12:34:05,575 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-11-10 12:34:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:05,625 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-11-10 12:34:05,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 12:34:05,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-10 12:34:05,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:05,628 INFO L225 Difference]: With dead ends: 43 [2018-11-10 12:34:05,628 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 12:34:05,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:34:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 12:34:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-11-10 12:34:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 12:34:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-10 12:34:05,635 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2018-11-10 12:34:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:05,635 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-10 12:34:05,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 12:34:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-10 12:34:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-10 12:34:05,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:05,636 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:05,636 INFO L424 AbstractCegarLoop]: === Iteration 3 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:05,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:05,637 INFO L82 PathProgramCache]: Analyzing trace with hash -80939849, now seen corresponding path program 1 times [2018-11-10 12:34:05,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:05,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:05,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:05,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:05,700 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:05,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:05,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:05,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:05,762 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:05,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 12:34:05,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 12:34:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 12:34:05,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-10 12:34:05,763 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-11-10 12:34:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:05,833 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-10 12:34:05,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 12:34:05,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-10 12:34:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:05,835 INFO L225 Difference]: With dead ends: 59 [2018-11-10 12:34:05,835 INFO L226 Difference]: Without dead ends: 58 [2018-11-10 12:34:05,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-11-10 12:34:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-10 12:34:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-11-10 12:34:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 12:34:05,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-11-10 12:34:05,844 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 16 [2018-11-10 12:34:05,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:05,844 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-11-10 12:34:05,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 12:34:05,844 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-11-10 12:34:05,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-10 12:34:05,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:05,845 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 12:34:05,845 INFO L424 AbstractCegarLoop]: === Iteration 4 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:05,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:05,847 INFO L82 PathProgramCache]: Analyzing trace with hash -474289655, now seen corresponding path program 1 times [2018-11-10 12:34:05,847 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:05,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:05,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 12:34:05,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:34:05,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 12:34:05,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:34:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:34:05,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:34:05,889 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 4 states. [2018-11-10 12:34:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:05,926 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2018-11-10 12:34:05,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:34:05,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-10 12:34:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:05,928 INFO L225 Difference]: With dead ends: 67 [2018-11-10 12:34:05,928 INFO L226 Difference]: Without dead ends: 65 [2018-11-10 12:34:05,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:34:05,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-10 12:34:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-11-10 12:34:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-10 12:34:05,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2018-11-10 12:34:05,936 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 18 [2018-11-10 12:34:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:05,936 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2018-11-10 12:34:05,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:34:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2018-11-10 12:34:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 12:34:05,938 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:05,939 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:05,939 INFO L424 AbstractCegarLoop]: === Iteration 5 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:05,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:05,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1818077372, now seen corresponding path program 1 times [2018-11-10 12:34:05,939 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:05,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:05,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 12:34:05,958 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 12:34:05,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 12:34:05,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 12:34:05,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 12:34:05,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:34:05,958 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 4 states. [2018-11-10 12:34:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:05,979 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-10 12:34:05,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 12:34:05,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-10 12:34:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:05,980 INFO L225 Difference]: With dead ends: 62 [2018-11-10 12:34:05,980 INFO L226 Difference]: Without dead ends: 53 [2018-11-10 12:34:05,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 12:34:05,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-10 12:34:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-10 12:34:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-10 12:34:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-11-10 12:34:05,986 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 19 [2018-11-10 12:34:05,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:05,987 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-11-10 12:34:05,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 12:34:05,987 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-11-10 12:34:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 12:34:05,987 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:05,987 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:05,988 INFO L424 AbstractCegarLoop]: === Iteration 6 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:05,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:05,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1159773325, now seen corresponding path program 2 times [2018-11-10 12:34:05,988 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:05,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:05,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:05,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:06,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:06,057 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:06,062 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:34:06,068 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:34:06,068 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:06,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:06,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:06,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-10 12:34:06,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 12:34:06,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 12:34:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-10 12:34:06,093 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2018-11-10 12:34:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:06,207 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-11-10 12:34:06,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 12:34:06,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-10 12:34:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:06,209 INFO L225 Difference]: With dead ends: 78 [2018-11-10 12:34:06,209 INFO L226 Difference]: Without dead ends: 77 [2018-11-10 12:34:06,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-11-10 12:34:06,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-10 12:34:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2018-11-10 12:34:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-10 12:34:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-11-10 12:34:06,219 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 21 [2018-11-10 12:34:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:06,220 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-11-10 12:34:06,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 12:34:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-11-10 12:34:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 12:34:06,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:06,220 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:06,221 INFO L424 AbstractCegarLoop]: === Iteration 7 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:06,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:06,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1430047287, now seen corresponding path program 3 times [2018-11-10 12:34:06,221 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:06,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:06,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:06,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:06,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:06,296 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:06,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 12:34:06,321 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 12:34:06,321 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:06,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:06,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:06,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-10 12:34:06,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 12:34:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 12:34:06,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-10 12:34:06,345 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 11 states. [2018-11-10 12:34:06,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:06,456 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-11-10 12:34:06,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 12:34:06,457 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-10 12:34:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:06,458 INFO L225 Difference]: With dead ends: 98 [2018-11-10 12:34:06,458 INFO L226 Difference]: Without dead ends: 97 [2018-11-10 12:34:06,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-11-10 12:34:06,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-10 12:34:06,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-11-10 12:34:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-10 12:34:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2018-11-10 12:34:06,468 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2018-11-10 12:34:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:06,468 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2018-11-10 12:34:06,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 12:34:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2018-11-10 12:34:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 12:34:06,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:06,469 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:06,469 INFO L424 AbstractCegarLoop]: === Iteration 8 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:06,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1529291277, now seen corresponding path program 4 times [2018-11-10 12:34:06,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:06,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:06,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:06,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:06,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:06,577 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:06,590 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 12:34:06,604 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 12:34:06,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:06,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:06,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:06,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-10 12:34:06,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 12:34:06,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 12:34:06,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-10 12:34:06,637 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2018-11-10 12:34:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:06,749 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2018-11-10 12:34:06,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 12:34:06,749 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-10 12:34:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:06,750 INFO L225 Difference]: With dead ends: 118 [2018-11-10 12:34:06,750 INFO L226 Difference]: Without dead ends: 117 [2018-11-10 12:34:06,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2018-11-10 12:34:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-10 12:34:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2018-11-10 12:34:06,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-10 12:34:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2018-11-10 12:34:06,759 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 31 [2018-11-10 12:34:06,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:06,760 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2018-11-10 12:34:06,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 12:34:06,760 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2018-11-10 12:34:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 12:34:06,761 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:06,761 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:06,761 INFO L424 AbstractCegarLoop]: === Iteration 9 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:06,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:06,762 INFO L82 PathProgramCache]: Analyzing trace with hash -10526561, now seen corresponding path program 1 times [2018-11-10 12:34:06,762 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:06,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:06,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:06,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:06,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 12:34:06,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:06,809 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:06,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:06,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 12:34:06,886 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:06,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-10 12:34:06,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 12:34:06,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 12:34:06,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:34:06,887 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 6 states. [2018-11-10 12:34:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:06,908 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2018-11-10 12:34:06,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 12:34:06,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-10 12:34:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:06,909 INFO L225 Difference]: With dead ends: 153 [2018-11-10 12:34:06,909 INFO L226 Difference]: Without dead ends: 138 [2018-11-10 12:34:06,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 12:34:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-10 12:34:06,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-11-10 12:34:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-11-10 12:34:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2018-11-10 12:34:06,919 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 30 [2018-11-10 12:34:06,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:06,919 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2018-11-10 12:34:06,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 12:34:06,919 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2018-11-10 12:34:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-10 12:34:06,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:06,920 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:06,921 INFO L424 AbstractCegarLoop]: === Iteration 10 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:06,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1671413687, now seen corresponding path program 5 times [2018-11-10 12:34:06,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:06,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:06,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:06,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:07,058 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:07,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:07,058 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:07,064 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 12:34:07,075 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-10 12:34:07,075 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:07,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:07,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:07,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-10 12:34:07,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 12:34:07,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 12:34:07,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-11-10 12:34:07,106 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand 15 states. [2018-11-10 12:34:07,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:07,247 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2018-11-10 12:34:07,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-10 12:34:07,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-11-10 12:34:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:07,248 INFO L225 Difference]: With dead ends: 171 [2018-11-10 12:34:07,251 INFO L226 Difference]: Without dead ends: 170 [2018-11-10 12:34:07,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2018-11-10 12:34:07,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-11-10 12:34:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-11-10 12:34:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-11-10 12:34:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-11-10 12:34:07,258 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 36 [2018-11-10 12:34:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:07,258 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-11-10 12:34:07,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 12:34:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-11-10 12:34:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 12:34:07,259 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:07,260 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:07,260 INFO L424 AbstractCegarLoop]: === Iteration 11 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:07,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash 829642867, now seen corresponding path program 6 times [2018-11-10 12:34:07,260 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:07,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:07,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 12:34:07,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:07,402 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:07,409 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 12:34:07,427 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-10 12:34:07,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:07,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:07,469 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 12:34:07,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:07,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2018-11-10 12:34:07,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 12:34:07,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 12:34:07,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-11-10 12:34:07,496 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 18 states. [2018-11-10 12:34:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:07,521 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2018-11-10 12:34:07,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 12:34:07,522 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2018-11-10 12:34:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:07,523 INFO L225 Difference]: With dead ends: 158 [2018-11-10 12:34:07,523 INFO L226 Difference]: Without dead ends: 157 [2018-11-10 12:34:07,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-11-10 12:34:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-10 12:34:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-11-10 12:34:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-10 12:34:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2018-11-10 12:34:07,530 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 175 transitions. Word has length 41 [2018-11-10 12:34:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:07,530 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 175 transitions. [2018-11-10 12:34:07,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 12:34:07,530 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 175 transitions. [2018-11-10 12:34:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-10 12:34:07,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:07,531 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:07,531 INFO L424 AbstractCegarLoop]: === Iteration 12 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:07,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:07,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1233481545, now seen corresponding path program 2 times [2018-11-10 12:34:07,531 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:07,531 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:07,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:07,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 12:34:07,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:07,592 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:07,602 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:34:07,615 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:34:07,615 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:07,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-10 12:34:07,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:07,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 12:34:07,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 12:34:07,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 12:34:07,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-10 12:34:07,649 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. Second operand 8 states. [2018-11-10 12:34:07,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:07,683 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2018-11-10 12:34:07,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 12:34:07,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-11-10 12:34:07,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:07,686 INFO L225 Difference]: With dead ends: 211 [2018-11-10 12:34:07,686 INFO L226 Difference]: Without dead ends: 189 [2018-11-10 12:34:07,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-10 12:34:07,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-11-10 12:34:07,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2018-11-10 12:34:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-11-10 12:34:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 201 transitions. [2018-11-10 12:34:07,696 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 201 transitions. Word has length 42 [2018-11-10 12:34:07,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:07,696 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 201 transitions. [2018-11-10 12:34:07,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 12:34:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 201 transitions. [2018-11-10 12:34:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-10 12:34:07,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:07,699 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:07,699 INFO L424 AbstractCegarLoop]: === Iteration 13 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:07,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:07,699 INFO L82 PathProgramCache]: Analyzing trace with hash -677419169, now seen corresponding path program 3 times [2018-11-10 12:34:07,700 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:07,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:07,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:07,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-10 12:34:07,751 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:07,751 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:07,756 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 12:34:07,772 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 12:34:07,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:07,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-10 12:34:07,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:07,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 12:34:07,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 12:34:07,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 12:34:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-10 12:34:07,818 INFO L87 Difference]: Start difference. First operand 183 states and 201 transitions. Second operand 10 states. [2018-11-10 12:34:07,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:07,862 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2018-11-10 12:34:07,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 12:34:07,862 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-10 12:34:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:07,863 INFO L225 Difference]: With dead ends: 237 [2018-11-10 12:34:07,863 INFO L226 Difference]: Without dead ends: 208 [2018-11-10 12:34:07,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-10 12:34:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-11-10 12:34:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2018-11-10 12:34:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-11-10 12:34:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2018-11-10 12:34:07,872 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 54 [2018-11-10 12:34:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:07,872 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2018-11-10 12:34:07,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 12:34:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2018-11-10 12:34:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-10 12:34:07,875 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:07,875 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:07,875 INFO L424 AbstractCegarLoop]: === Iteration 14 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:07,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1491778423, now seen corresponding path program 4 times [2018-11-10 12:34:07,876 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:07,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:07,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,877 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:07,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-10 12:34:07,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:07,944 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:07,950 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 12:34:07,961 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 12:34:07,961 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:07,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-10 12:34:08,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:08,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-10 12:34:08,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 12:34:08,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 12:34:08,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-10 12:34:08,018 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand 12 states. [2018-11-10 12:34:08,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:08,085 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2018-11-10 12:34:08,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 12:34:08,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-11-10 12:34:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:08,087 INFO L225 Difference]: With dead ends: 256 [2018-11-10 12:34:08,087 INFO L226 Difference]: Without dead ends: 220 [2018-11-10 12:34:08,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-10 12:34:08,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-11-10 12:34:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2018-11-10 12:34:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-11-10 12:34:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2018-11-10 12:34:08,096 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 66 [2018-11-10 12:34:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:08,096 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2018-11-10 12:34:08,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 12:34:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2018-11-10 12:34:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-10 12:34:08,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:08,098 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:08,098 INFO L424 AbstractCegarLoop]: === Iteration 15 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:08,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:08,098 INFO L82 PathProgramCache]: Analyzing trace with hash 501489183, now seen corresponding path program 5 times [2018-11-10 12:34:08,098 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:08,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:08,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:08,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-10 12:34:08,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:08,204 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:08,215 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 12:34:08,234 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-10 12:34:08,234 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:08,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-10 12:34:08,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:08,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-10 12:34:08,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 12:34:08,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 12:34:08,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-10 12:34:08,315 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand 14 states. [2018-11-10 12:34:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:08,355 INFO L93 Difference]: Finished difference Result 268 states and 298 transitions. [2018-11-10 12:34:08,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 12:34:08,355 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-11-10 12:34:08,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:08,356 INFO L225 Difference]: With dead ends: 268 [2018-11-10 12:34:08,356 INFO L226 Difference]: Without dead ends: 227 [2018-11-10 12:34:08,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-10 12:34:08,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-11-10 12:34:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2018-11-10 12:34:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-11-10 12:34:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-11-10 12:34:08,362 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 78 [2018-11-10 12:34:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:08,363 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-11-10 12:34:08,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 12:34:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-11-10 12:34:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-10 12:34:08,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:08,364 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:08,364 INFO L424 AbstractCegarLoop]: === Iteration 16 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:08,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:08,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1033999927, now seen corresponding path program 6 times [2018-11-10 12:34:08,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:08,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:08,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:08,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-10 12:34:08,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:08,484 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:08,490 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 12:34:08,504 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-10 12:34:08,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:08,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-10 12:34:08,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:08,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-10 12:34:08,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 12:34:08,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 12:34:08,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-10 12:34:08,586 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 16 states. [2018-11-10 12:34:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:08,630 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2018-11-10 12:34:08,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 12:34:08,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2018-11-10 12:34:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:08,632 INFO L225 Difference]: With dead ends: 275 [2018-11-10 12:34:08,632 INFO L226 Difference]: Without dead ends: 234 [2018-11-10 12:34:08,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-10 12:34:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-11-10 12:34:08,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2018-11-10 12:34:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-11-10 12:34:08,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2018-11-10 12:34:08,638 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 90 [2018-11-10 12:34:08,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:08,639 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2018-11-10 12:34:08,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 12:34:08,639 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2018-11-10 12:34:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-10 12:34:08,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:08,640 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:08,640 INFO L424 AbstractCegarLoop]: === Iteration 17 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:08,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:08,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1169786079, now seen corresponding path program 7 times [2018-11-10 12:34:08,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:08,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:08,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:08,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-10 12:34:08,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:08,759 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:08,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:08,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:08,870 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-10 12:34:08,886 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:08,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-10 12:34:08,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 12:34:08,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 12:34:08,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-10 12:34:08,887 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand 18 states. [2018-11-10 12:34:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:08,933 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2018-11-10 12:34:08,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 12:34:08,933 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2018-11-10 12:34:08,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:08,934 INFO L225 Difference]: With dead ends: 282 [2018-11-10 12:34:08,934 INFO L226 Difference]: Without dead ends: 241 [2018-11-10 12:34:08,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-10 12:34:08,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-11-10 12:34:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2018-11-10 12:34:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-11-10 12:34:08,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2018-11-10 12:34:08,941 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 102 [2018-11-10 12:34:08,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:08,941 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2018-11-10 12:34:08,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 12:34:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2018-11-10 12:34:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-10 12:34:08,942 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:08,943 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:08,943 INFO L424 AbstractCegarLoop]: === Iteration 18 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:08,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash 117714501, now seen corresponding path program 8 times [2018-11-10 12:34:08,943 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:08,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:08,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:08,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-11-10 12:34:09,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:09,102 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:09,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:34:09,132 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:34:09,132 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:09,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-11-10 12:34:09,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:09,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-10 12:34:09,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 12:34:09,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 12:34:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-10 12:34:09,276 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 20 states. [2018-11-10 12:34:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:09,359 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2018-11-10 12:34:09,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-10 12:34:09,360 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2018-11-10 12:34:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:09,361 INFO L225 Difference]: With dead ends: 289 [2018-11-10 12:34:09,361 INFO L226 Difference]: Without dead ends: 248 [2018-11-10 12:34:09,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-10 12:34:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-11-10 12:34:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2018-11-10 12:34:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-11-10 12:34:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 260 transitions. [2018-11-10 12:34:09,370 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 260 transitions. Word has length 149 [2018-11-10 12:34:09,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:09,371 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 260 transitions. [2018-11-10 12:34:09,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 12:34:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 260 transitions. [2018-11-10 12:34:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-10 12:34:09,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:09,372 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:09,372 INFO L424 AbstractCegarLoop]: === Iteration 19 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:09,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:09,373 INFO L82 PathProgramCache]: Analyzing trace with hash 497785759, now seen corresponding path program 9 times [2018-11-10 12:34:09,373 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:09,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:09,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:09,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:09,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-11-10 12:34:09,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:09,547 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/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 12:34:09,559 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 12:34:09,581 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-10 12:34:09,581 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:09,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-11-10 12:34:09,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:09,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-10 12:34:09,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-10 12:34:09,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-10 12:34:09,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-10 12:34:09,703 INFO L87 Difference]: Start difference. First operand 242 states and 260 transitions. Second operand 22 states. [2018-11-10 12:34:09,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:09,768 INFO L93 Difference]: Finished difference Result 296 states and 326 transitions. [2018-11-10 12:34:09,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-10 12:34:09,769 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2018-11-10 12:34:09,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:09,770 INFO L225 Difference]: With dead ends: 296 [2018-11-10 12:34:09,770 INFO L226 Difference]: Without dead ends: 255 [2018-11-10 12:34:09,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-10 12:34:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-11-10 12:34:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2018-11-10 12:34:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-11-10 12:34:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2018-11-10 12:34:09,777 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 126 [2018-11-10 12:34:09,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:09,778 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2018-11-10 12:34:09,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-10 12:34:09,778 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2018-11-10 12:34:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-10 12:34:09,779 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:09,779 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:09,781 INFO L424 AbstractCegarLoop]: === Iteration 20 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:09,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash -911147131, now seen corresponding path program 10 times [2018-11-10 12:34:09,781 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:09,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:09,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:09,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:09,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-11-10 12:34:09,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:09,945 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:09,951 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 12:34:09,978 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 12:34:09,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:09,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-11-10 12:34:10,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:10,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-10 12:34:10,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-10 12:34:10,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-10 12:34:10,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-10 12:34:10,140 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 24 states. [2018-11-10 12:34:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:10,221 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2018-11-10 12:34:10,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-10 12:34:10,221 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 173 [2018-11-10 12:34:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:10,222 INFO L225 Difference]: With dead ends: 303 [2018-11-10 12:34:10,222 INFO L226 Difference]: Without dead ends: 262 [2018-11-10 12:34:10,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-10 12:34:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-11-10 12:34:10,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2018-11-10 12:34:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-11-10 12:34:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2018-11-10 12:34:10,229 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 173 [2018-11-10 12:34:10,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:10,230 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2018-11-10 12:34:10,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-10 12:34:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2018-11-10 12:34:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-10 12:34:10,231 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:10,232 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:10,232 INFO L424 AbstractCegarLoop]: === Iteration 21 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:10,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:10,233 INFO L82 PathProgramCache]: Analyzing trace with hash 705676187, now seen corresponding path program 11 times [2018-11-10 12:34:10,233 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:10,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:10,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:10,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:10,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-11-10 12:34:10,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:10,423 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:10,429 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 12:34:10,500 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2018-11-10 12:34:10,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:10,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-11-10 12:34:10,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:10,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-10 12:34:10,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-10 12:34:10,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-10 12:34:10,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-10 12:34:10,683 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 26 states. [2018-11-10 12:34:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:10,766 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2018-11-10 12:34:10,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-10 12:34:10,766 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 185 [2018-11-10 12:34:10,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:10,767 INFO L225 Difference]: With dead ends: 310 [2018-11-10 12:34:10,767 INFO L226 Difference]: Without dead ends: 269 [2018-11-10 12:34:10,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-10 12:34:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-11-10 12:34:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2018-11-10 12:34:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-11-10 12:34:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 281 transitions. [2018-11-10 12:34:10,775 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 281 transitions. Word has length 185 [2018-11-10 12:34:10,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:10,776 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 281 transitions. [2018-11-10 12:34:10,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-10 12:34:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 281 transitions. [2018-11-10 12:34:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-10 12:34:10,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:10,778 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:10,778 INFO L424 AbstractCegarLoop]: === Iteration 22 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:10,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 219789705, now seen corresponding path program 12 times [2018-11-10 12:34:10,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:10,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:10,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:10,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:10,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-11-10 12:34:11,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:11,028 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:11,033 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 12:34:11,056 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-11-10 12:34:11,056 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:11,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-11-10 12:34:11,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:11,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-10 12:34:11,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-10 12:34:11,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-10 12:34:11,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-11-10 12:34:11,265 INFO L87 Difference]: Start difference. First operand 263 states and 281 transitions. Second operand 28 states. [2018-11-10 12:34:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:11,338 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2018-11-10 12:34:11,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-10 12:34:11,338 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 162 [2018-11-10 12:34:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:11,340 INFO L225 Difference]: With dead ends: 317 [2018-11-10 12:34:11,340 INFO L226 Difference]: Without dead ends: 276 [2018-11-10 12:34:11,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 150 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-11-10 12:34:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-11-10 12:34:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2018-11-10 12:34:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-11-10 12:34:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2018-11-10 12:34:11,347 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 162 [2018-11-10 12:34:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:11,347 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2018-11-10 12:34:11,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-10 12:34:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2018-11-10 12:34:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-10 12:34:11,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:11,349 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:11,349 INFO L424 AbstractCegarLoop]: === Iteration 23 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:11,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:11,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1595267359, now seen corresponding path program 13 times [2018-11-10 12:34:11,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:11,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:11,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:11,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:11,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-11-10 12:34:11,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:11,595 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:11,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:11,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-11-10 12:34:11,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:11,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-10 12:34:11,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-10 12:34:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-10 12:34:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-11-10 12:34:11,829 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 30 states. [2018-11-10 12:34:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:11,931 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2018-11-10 12:34:11,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-10 12:34:11,932 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2018-11-10 12:34:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:11,932 INFO L225 Difference]: With dead ends: 324 [2018-11-10 12:34:11,932 INFO L226 Difference]: Without dead ends: 283 [2018-11-10 12:34:11,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 161 SyntacticMatches, 13 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-11-10 12:34:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-11-10 12:34:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2018-11-10 12:34:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-11-10 12:34:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 295 transitions. [2018-11-10 12:34:11,939 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 295 transitions. Word has length 174 [2018-11-10 12:34:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:11,940 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 295 transitions. [2018-11-10 12:34:11,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-10 12:34:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 295 transitions. [2018-11-10 12:34:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-10 12:34:11,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:11,944 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:11,944 INFO L424 AbstractCegarLoop]: === Iteration 24 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:11,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash -611151355, now seen corresponding path program 14 times [2018-11-10 12:34:11,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:11,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:11,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:12,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-11-10 12:34:12,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:12,229 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:12,235 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:34:12,270 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:34:12,270 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:12,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-11-10 12:34:12,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:12,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-10 12:34:12,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-10 12:34:12,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-10 12:34:12,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-10 12:34:12,525 INFO L87 Difference]: Start difference. First operand 277 states and 295 transitions. Second operand 32 states. [2018-11-10 12:34:12,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:12,601 INFO L93 Difference]: Finished difference Result 331 states and 361 transitions. [2018-11-10 12:34:12,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-10 12:34:12,601 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 221 [2018-11-10 12:34:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:12,603 INFO L225 Difference]: With dead ends: 331 [2018-11-10 12:34:12,603 INFO L226 Difference]: Without dead ends: 290 [2018-11-10 12:34:12,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-10 12:34:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-10 12:34:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2018-11-10 12:34:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-11-10 12:34:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 302 transitions. [2018-11-10 12:34:12,615 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 302 transitions. Word has length 221 [2018-11-10 12:34:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:12,615 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 302 transitions. [2018-11-10 12:34:12,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-10 12:34:12,615 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 302 transitions. [2018-11-10 12:34:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-10 12:34:12,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:12,618 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:12,618 INFO L424 AbstractCegarLoop]: === Iteration 25 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:12,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:12,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2030663963, now seen corresponding path program 15 times [2018-11-10 12:34:12,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:12,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:12,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:12,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:12,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-10 12:34:12,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:12,991 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:12,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 12:34:13,025 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-10 12:34:13,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:13,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-10 12:34:13,281 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:13,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-10 12:34:13,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-10 12:34:13,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-10 12:34:13,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 12:34:13,282 INFO L87 Difference]: Start difference. First operand 284 states and 302 transitions. Second operand 34 states. [2018-11-10 12:34:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:13,388 INFO L93 Difference]: Finished difference Result 338 states and 368 transitions. [2018-11-10 12:34:13,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-10 12:34:13,388 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 233 [2018-11-10 12:34:13,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:13,389 INFO L225 Difference]: With dead ends: 338 [2018-11-10 12:34:13,389 INFO L226 Difference]: Without dead ends: 297 [2018-11-10 12:34:13,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 218 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 12:34:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-11-10 12:34:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2018-11-10 12:34:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-11-10 12:34:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 309 transitions. [2018-11-10 12:34:13,395 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 309 transitions. Word has length 233 [2018-11-10 12:34:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:13,396 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 309 transitions. [2018-11-10 12:34:13,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-10 12:34:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 309 transitions. [2018-11-10 12:34:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-10 12:34:13,397 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:13,397 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:13,397 INFO L424 AbstractCegarLoop]: === Iteration 26 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:13,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:13,398 INFO L82 PathProgramCache]: Analyzing trace with hash -687614967, now seen corresponding path program 16 times [2018-11-10 12:34:13,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:13,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:13,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:13,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:13,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-10 12:34:13,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:13,764 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:13,771 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 12:34:13,800 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 12:34:13,801 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:13,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-10 12:34:14,086 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:14,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-10 12:34:14,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-10 12:34:14,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-10 12:34:14,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 12:34:14,088 INFO L87 Difference]: Start difference. First operand 291 states and 309 transitions. Second operand 36 states. [2018-11-10 12:34:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:14,203 INFO L93 Difference]: Finished difference Result 345 states and 375 transitions. [2018-11-10 12:34:14,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-10 12:34:14,204 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 210 [2018-11-10 12:34:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:14,205 INFO L225 Difference]: With dead ends: 345 [2018-11-10 12:34:14,205 INFO L226 Difference]: Without dead ends: 304 [2018-11-10 12:34:14,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 16 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-11-10 12:34:14,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-11-10 12:34:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2018-11-10 12:34:14,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-11-10 12:34:14,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 316 transitions. [2018-11-10 12:34:14,212 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 316 transitions. Word has length 210 [2018-11-10 12:34:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:14,213 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 316 transitions. [2018-11-10 12:34:14,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-10 12:34:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 316 transitions. [2018-11-10 12:34:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-10 12:34:14,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:14,215 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:14,215 INFO L424 AbstractCegarLoop]: === Iteration 27 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:14,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash 362634203, now seen corresponding path program 17 times [2018-11-10 12:34:14,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:14,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:14,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:14,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:14,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-10 12:34:14,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:14,593 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:14,598 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 12:34:14,646 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-11-10 12:34:14,646 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:14,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-10 12:34:14,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:14,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-10 12:34:14,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-10 12:34:14,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-10 12:34:14,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 12:34:14,919 INFO L87 Difference]: Start difference. First operand 298 states and 316 transitions. Second operand 38 states. [2018-11-10 12:34:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:15,007 INFO L93 Difference]: Finished difference Result 352 states and 382 transitions. [2018-11-10 12:34:15,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-10 12:34:15,007 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 257 [2018-11-10 12:34:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:15,008 INFO L225 Difference]: With dead ends: 352 [2018-11-10 12:34:15,008 INFO L226 Difference]: Without dead ends: 311 [2018-11-10 12:34:15,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 17 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-10 12:34:15,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-11-10 12:34:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2018-11-10 12:34:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-11-10 12:34:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 323 transitions. [2018-11-10 12:34:15,017 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 323 transitions. Word has length 257 [2018-11-10 12:34:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:15,017 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 323 transitions. [2018-11-10 12:34:15,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-10 12:34:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 323 transitions. [2018-11-10 12:34:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-10 12:34:15,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:15,019 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:15,019 INFO L424 AbstractCegarLoop]: === Iteration 28 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:15,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:15,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2128176261, now seen corresponding path program 18 times [2018-11-10 12:34:15,019 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:15,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:15,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:15,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:15,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-10 12:34:15,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:15,458 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:15,463 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 12:34:15,511 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-11-10 12:34:15,512 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:15,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-10 12:34:15,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:15,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-10 12:34:15,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-10 12:34:15,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-10 12:34:15,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-11-10 12:34:15,898 INFO L87 Difference]: Start difference. First operand 305 states and 323 transitions. Second operand 40 states. [2018-11-10 12:34:16,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:16,111 INFO L93 Difference]: Finished difference Result 359 states and 389 transitions. [2018-11-10 12:34:16,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-10 12:34:16,111 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 269 [2018-11-10 12:34:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:16,113 INFO L225 Difference]: With dead ends: 359 [2018-11-10 12:34:16,113 INFO L226 Difference]: Without dead ends: 318 [2018-11-10 12:34:16,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 251 SyntacticMatches, 18 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-11-10 12:34:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-11-10 12:34:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2018-11-10 12:34:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-11-10 12:34:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 330 transitions. [2018-11-10 12:34:16,120 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 330 transitions. Word has length 269 [2018-11-10 12:34:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:16,120 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 330 transitions. [2018-11-10 12:34:16,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-10 12:34:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 330 transitions. [2018-11-10 12:34:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-10 12:34:16,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:16,122 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:16,122 INFO L424 AbstractCegarLoop]: === Iteration 29 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:16,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1319497371, now seen corresponding path program 19 times [2018-11-10 12:34:16,122 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:16,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:16,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:16,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:16,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-10 12:34:16,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:16,676 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:16,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:16,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:17,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-10 12:34:17,046 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:17,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-10 12:34:17,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-10 12:34:17,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-10 12:34:17,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 12:34:17,048 INFO L87 Difference]: Start difference. First operand 312 states and 330 transitions. Second operand 42 states. [2018-11-10 12:34:17,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:17,166 INFO L93 Difference]: Finished difference Result 366 states and 396 transitions. [2018-11-10 12:34:17,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-10 12:34:17,166 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 281 [2018-11-10 12:34:17,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:17,168 INFO L225 Difference]: With dead ends: 366 [2018-11-10 12:34:17,168 INFO L226 Difference]: Without dead ends: 325 [2018-11-10 12:34:17,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 262 SyntacticMatches, 19 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-10 12:34:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-11-10 12:34:17,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2018-11-10 12:34:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-10 12:34:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 337 transitions. [2018-11-10 12:34:17,175 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 337 transitions. Word has length 281 [2018-11-10 12:34:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:17,175 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 337 transitions. [2018-11-10 12:34:17,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-10 12:34:17,175 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 337 transitions. [2018-11-10 12:34:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-10 12:34:17,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:17,177 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:17,177 INFO L424 AbstractCegarLoop]: === Iteration 30 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:17,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 973391301, now seen corresponding path program 20 times [2018-11-10 12:34:17,177 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:17,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:17,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:17,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:17,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-10 12:34:17,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:17,585 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:17,590 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:34:17,620 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:34:17,620 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:17,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-10 12:34:17,972 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:17,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-10 12:34:17,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-10 12:34:17,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-10 12:34:17,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 12:34:17,973 INFO L87 Difference]: Start difference. First operand 319 states and 337 transitions. Second operand 44 states. [2018-11-10 12:34:18,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:18,086 INFO L93 Difference]: Finished difference Result 373 states and 403 transitions. [2018-11-10 12:34:18,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-10 12:34:18,086 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 293 [2018-11-10 12:34:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:18,087 INFO L225 Difference]: With dead ends: 373 [2018-11-10 12:34:18,087 INFO L226 Difference]: Without dead ends: 332 [2018-11-10 12:34:18,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 273 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 12:34:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-11-10 12:34:18,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2018-11-10 12:34:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-11-10 12:34:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 344 transitions. [2018-11-10 12:34:18,093 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 344 transitions. Word has length 293 [2018-11-10 12:34:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:18,093 INFO L481 AbstractCegarLoop]: Abstraction has 326 states and 344 transitions. [2018-11-10 12:34:18,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-10 12:34:18,094 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 344 transitions. [2018-11-10 12:34:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-10 12:34:18,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:18,095 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:18,096 INFO L424 AbstractCegarLoop]: === Iteration 31 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:18,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1062260389, now seen corresponding path program 21 times [2018-11-10 12:34:18,096 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:18,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:18,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:18,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:18,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-10 12:34:18,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:18,593 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:18,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 12:34:18,641 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-10 12:34:18,641 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:18,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-10 12:34:19,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:19,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-10 12:34:19,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-10 12:34:19,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-10 12:34:19,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-11-10 12:34:19,112 INFO L87 Difference]: Start difference. First operand 326 states and 344 transitions. Second operand 46 states. [2018-11-10 12:34:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:19,236 INFO L93 Difference]: Finished difference Result 380 states and 410 transitions. [2018-11-10 12:34:19,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-10 12:34:19,236 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 305 [2018-11-10 12:34:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:19,237 INFO L225 Difference]: With dead ends: 380 [2018-11-10 12:34:19,237 INFO L226 Difference]: Without dead ends: 339 [2018-11-10 12:34:19,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 284 SyntacticMatches, 21 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-11-10 12:34:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-11-10 12:34:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2018-11-10 12:34:19,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-11-10 12:34:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 351 transitions. [2018-11-10 12:34:19,243 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 351 transitions. Word has length 305 [2018-11-10 12:34:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:19,243 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 351 transitions. [2018-11-10 12:34:19,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-10 12:34:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 351 transitions. [2018-11-10 12:34:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-10 12:34:19,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:19,246 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:19,246 INFO L424 AbstractCegarLoop]: === Iteration 32 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:19,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:19,246 INFO L82 PathProgramCache]: Analyzing trace with hash -953846011, now seen corresponding path program 22 times [2018-11-10 12:34:19,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:19,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:19,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:19,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:19,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:19,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:19,783 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:19,788 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 12:34:19,821 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 12:34:19,821 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:19,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:20,222 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:20,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-10 12:34:20,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-10 12:34:20,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-10 12:34:20,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-10 12:34:20,223 INFO L87 Difference]: Start difference. First operand 333 states and 351 transitions. Second operand 48 states. [2018-11-10 12:34:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:20,362 INFO L93 Difference]: Finished difference Result 387 states and 417 transitions. [2018-11-10 12:34:20,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-10 12:34:20,362 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 317 [2018-11-10 12:34:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:20,363 INFO L225 Difference]: With dead ends: 387 [2018-11-10 12:34:20,363 INFO L226 Difference]: Without dead ends: 346 [2018-11-10 12:34:20,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 295 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-10 12:34:20,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-11-10 12:34:20,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2018-11-10 12:34:20,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-10 12:34:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 358 transitions. [2018-11-10 12:34:20,369 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 358 transitions. Word has length 317 [2018-11-10 12:34:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:20,370 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 358 transitions. [2018-11-10 12:34:20,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-10 12:34:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 358 transitions. [2018-11-10 12:34:20,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-11-10 12:34:20,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:20,372 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:20,372 INFO L424 AbstractCegarLoop]: === Iteration 33 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:20,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:20,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1555749861, now seen corresponding path program 23 times [2018-11-10 12:34:20,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:20,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:20,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:20,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:20,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-10 12:34:21,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:21,023 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:21,029 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 12:34:21,098 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-11-10 12:34:21,098 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:21,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-10 12:34:21,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:21,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-10 12:34:21,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-10 12:34:21,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-10 12:34:21,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2018-11-10 12:34:21,237 INFO L87 Difference]: Start difference. First operand 340 states and 358 transitions. Second operand 44 states. [2018-11-10 12:34:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:22,614 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2018-11-10 12:34:22,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-11-10 12:34:22,615 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 329 [2018-11-10 12:34:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:22,618 INFO L225 Difference]: With dead ends: 568 [2018-11-10 12:34:22,618 INFO L226 Difference]: Without dead ends: 399 [2018-11-10 12:34:22,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3952, Invalid=9388, Unknown=0, NotChecked=0, Total=13340 [2018-11-10 12:34:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-11-10 12:34:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2018-11-10 12:34:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-11-10 12:34:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 405 transitions. [2018-11-10 12:34:22,627 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 405 transitions. Word has length 329 [2018-11-10 12:34:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:22,628 INFO L481 AbstractCegarLoop]: Abstraction has 387 states and 405 transitions. [2018-11-10 12:34:22,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-10 12:34:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 405 transitions. [2018-11-10 12:34:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-10 12:34:22,629 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:22,630 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:22,630 INFO L424 AbstractCegarLoop]: === Iteration 34 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:22,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:22,630 INFO L82 PathProgramCache]: Analyzing trace with hash 878541535, now seen corresponding path program 24 times [2018-11-10 12:34:22,630 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:22,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:22,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:22,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:22,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-11-10 12:34:23,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:23,157 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:23,163 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 12:34:23,230 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-10 12:34:23,231 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:23,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-11-10 12:34:23,737 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:23,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-10 12:34:23,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-10 12:34:23,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-10 12:34:23,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-11-10 12:34:23,738 INFO L87 Difference]: Start difference. First operand 387 states and 405 transitions. Second operand 50 states. [2018-11-10 12:34:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:23,856 INFO L93 Difference]: Finished difference Result 436 states and 463 transitions. [2018-11-10 12:34:23,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-10 12:34:23,857 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 294 [2018-11-10 12:34:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:23,858 INFO L225 Difference]: With dead ends: 436 [2018-11-10 12:34:23,858 INFO L226 Difference]: Without dead ends: 388 [2018-11-10 12:34:23,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 271 SyntacticMatches, 23 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-11-10 12:34:23,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-11-10 12:34:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-11-10 12:34:23,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-10 12:34:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 398 transitions. [2018-11-10 12:34:23,864 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 398 transitions. Word has length 294 [2018-11-10 12:34:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:23,864 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 398 transitions. [2018-11-10 12:34:23,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-10 12:34:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 398 transitions. [2018-11-10 12:34:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-10 12:34:23,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:23,866 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:23,868 INFO L424 AbstractCegarLoop]: === Iteration 35 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:23,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:23,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1456651717, now seen corresponding path program 25 times [2018-11-10 12:34:23,868 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:23,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:23,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:23,869 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:23,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:24,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:24,467 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:24,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:24,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:24,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:24,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-10 12:34:24,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-10 12:34:24,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-10 12:34:24,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 12:34:24,969 INFO L87 Difference]: Start difference. First operand 383 states and 398 transitions. Second operand 52 states. [2018-11-10 12:34:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:25,081 INFO L93 Difference]: Finished difference Result 424 states and 446 transitions. [2018-11-10 12:34:25,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-10 12:34:25,081 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 331 [2018-11-10 12:34:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:25,083 INFO L225 Difference]: With dead ends: 424 [2018-11-10 12:34:25,083 INFO L226 Difference]: Without dead ends: 376 [2018-11-10 12:34:25,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 307 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-10 12:34:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-11-10 12:34:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2018-11-10 12:34:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-11-10 12:34:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 384 transitions. [2018-11-10 12:34:25,088 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 384 transitions. Word has length 331 [2018-11-10 12:34:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:25,088 INFO L481 AbstractCegarLoop]: Abstraction has 372 states and 384 transitions. [2018-11-10 12:34:25,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-10 12:34:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 384 transitions. [2018-11-10 12:34:25,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-11-10 12:34:25,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:25,090 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:25,091 INFO L424 AbstractCegarLoop]: === Iteration 36 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:25,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:25,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1058729569, now seen corresponding path program 26 times [2018-11-10 12:34:25,091 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:25,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:25,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:25,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 12:34:25,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3877 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-10 12:34:25,718 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:25,718 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:25,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 12:34:25,781 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 12:34:25,781 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:25,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:26,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3877 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-10 12:34:26,269 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:26,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-10 12:34:26,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-10 12:34:26,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-10 12:34:26,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-10 12:34:26,270 INFO L87 Difference]: Start difference. First operand 372 states and 384 transitions. Second operand 54 states. [2018-11-10 12:34:26,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:26,406 INFO L93 Difference]: Finished difference Result 405 states and 422 transitions. [2018-11-10 12:34:26,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-10 12:34:26,407 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 318 [2018-11-10 12:34:26,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:26,408 INFO L225 Difference]: With dead ends: 405 [2018-11-10 12:34:26,408 INFO L226 Difference]: Without dead ends: 357 [2018-11-10 12:34:26,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 293 SyntacticMatches, 25 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-10 12:34:26,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-11-10 12:34:26,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2018-11-10 12:34:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-11-10 12:34:26,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 363 transitions. [2018-11-10 12:34:26,414 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 363 transitions. Word has length 318 [2018-11-10 12:34:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:26,414 INFO L481 AbstractCegarLoop]: Abstraction has 354 states and 363 transitions. [2018-11-10 12:34:26,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-10 12:34:26,415 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 363 transitions. [2018-11-10 12:34:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-11-10 12:34:26,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:26,416 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:26,417 INFO L424 AbstractCegarLoop]: === Iteration 37 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:26,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:26,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1790578249, now seen corresponding path program 27 times [2018-11-10 12:34:26,417 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:26,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:26,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:26,418 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:26,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-10 12:34:27,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:27,095 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:27,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 12:34:27,176 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-11-10 12:34:27,176 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:27,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-10 12:34:27,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:27,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-11-10 12:34:27,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-10 12:34:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-10 12:34:27,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-10 12:34:27,807 INFO L87 Difference]: Start difference. First operand 354 states and 363 transitions. Second operand 56 states. [2018-11-10 12:34:28,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:28,017 INFO L93 Difference]: Finished difference Result 379 states and 391 transitions. [2018-11-10 12:34:28,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-10 12:34:28,017 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 330 [2018-11-10 12:34:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:28,018 INFO L225 Difference]: With dead ends: 379 [2018-11-10 12:34:28,018 INFO L226 Difference]: Without dead ends: 331 [2018-11-10 12:34:28,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 304 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-10 12:34:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-11-10 12:34:28,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2018-11-10 12:34:28,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-10 12:34:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 335 transitions. [2018-11-10 12:34:28,022 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 335 transitions. Word has length 330 [2018-11-10 12:34:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:28,022 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 335 transitions. [2018-11-10 12:34:28,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-10 12:34:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 335 transitions. [2018-11-10 12:34:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-10 12:34:28,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:28,024 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:28,024 INFO L424 AbstractCegarLoop]: === Iteration 38 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:28,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:28,025 INFO L82 PathProgramCache]: Analyzing trace with hash -9086881, now seen corresponding path program 28 times [2018-11-10 12:34:28,025 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:28,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:28,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:28,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:28,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4511 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-10 12:34:28,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:28,770 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:28,778 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 12:34:28,825 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 12:34:28,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:28,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4511 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-10 12:34:29,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:29,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-11-10 12:34:29,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-10 12:34:29,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-10 12:34:29,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-10 12:34:29,514 INFO L87 Difference]: Start difference. First operand 329 states and 335 transitions. Second operand 58 states. [2018-11-10 12:34:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:29,672 INFO L93 Difference]: Finished difference Result 346 states and 353 transitions. [2018-11-10 12:34:29,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-10 12:34:29,672 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 342 [2018-11-10 12:34:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:29,673 INFO L225 Difference]: With dead ends: 346 [2018-11-10 12:34:29,673 INFO L226 Difference]: Without dead ends: 298 [2018-11-10 12:34:29,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 315 SyntacticMatches, 27 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-10 12:34:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-11-10 12:34:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-11-10 12:34:29,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-11-10 12:34:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2018-11-10 12:34:29,677 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 342 [2018-11-10 12:34:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:29,677 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2018-11-10 12:34:29,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-10 12:34:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2018-11-10 12:34:29,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-11-10 12:34:29,679 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:29,679 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:29,679 INFO L424 AbstractCegarLoop]: === Iteration 39 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:29,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:29,680 INFO L82 PathProgramCache]: Analyzing trace with hash 636541765, now seen corresponding path program 29 times [2018-11-10 12:34:29,680 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:29,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:29,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:29,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:29,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4993 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:30,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:30,465 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:30,471 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 12:34:30,553 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-11-10 12:34:30,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:30,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4993 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:31,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:31,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-11-10 12:34:31,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-11-10 12:34:31,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-11-10 12:34:31,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-10 12:34:31,208 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand 60 states. [2018-11-10 12:34:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:31,360 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-11-10 12:34:31,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-10 12:34:31,361 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 359 [2018-11-10 12:34:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:31,362 INFO L225 Difference]: With dead ends: 306 [2018-11-10 12:34:31,362 INFO L226 Difference]: Without dead ends: 258 [2018-11-10 12:34:31,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 331 SyntacticMatches, 28 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-10 12:34:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-11-10 12:34:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-11-10 12:34:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-11-10 12:34:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-11-10 12:34:31,366 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 359 [2018-11-10 12:34:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:31,367 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-11-10 12:34:31,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-11-10 12:34:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-11-10 12:34:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-10 12:34:31,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 12:34:31,372 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 12:34:31,372 INFO L424 AbstractCegarLoop]: === Iteration 40 === [hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-10 12:34:31,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 12:34:31,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1936044257, now seen corresponding path program 30 times [2018-11-10 12:34:31,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 12:34:31,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 12:34:31,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:31,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 12:34:31,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 12:34:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 12:34:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:32,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 12:34:32,233 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 12:34:32,237 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 12:34:32,318 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-10 12:34:32,318 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 12:34:32,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 12:34:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-10 12:34:33,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 12:34:33,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-11-10 12:34:33,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-10 12:34:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-10 12:34:33,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-10 12:34:33,142 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 62 states. [2018-11-10 12:34:33,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 12:34:33,352 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-11-10 12:34:33,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-10 12:34:33,353 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 366 [2018-11-10 12:34:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 12:34:33,353 INFO L225 Difference]: With dead ends: 258 [2018-11-10 12:34:33,353 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 12:34:33,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 337 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-10 12:34:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 12:34:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 12:34:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 12:34:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 12:34:33,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2018-11-10 12:34:33,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 12:34:33,355 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 12:34:33,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-10 12:34:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 12:34:33,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 12:34:33,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 12:34:33,490 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 12:34:33,490 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 12:34:33,490 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,490 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,490 INFO L421 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (< |hanoi_#in~n| 1))) (and (or (< 30 |hanoi_#in~n|) .cse0 (<= hanoi_~n |hanoi_#in~n|)) (or .cse0 (< 31 |hanoi_#in~n|) (and (<= hanoi_~n 31) (<= 1 hanoi_~n) (not (= 1 hanoi_~n)))))) [2018-11-10 12:34:33,490 INFO L425 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-11-10 12:34:33,490 INFO L425 ceAbstractionStarter]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point L20-4(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point L20-5(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point L20-6(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point L20-7(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L428 ceAbstractionStarter]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,491 INFO L425 ceAbstractionStarter]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 12:34:33,492 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point L30(lines 30 34) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2018-11-10 12:34:33,492 INFO L421 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (<= main_~n~0 31) (<= 1 main_~n~0)) [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2018-11-10 12:34:33,492 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2018-11-10 12:34:33,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:34:33 BoogieIcfgContainer [2018-11-10 12:34:33,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 12:34:33,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 12:34:33,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 12:34:33,496 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 12:34:33,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:34:05" (3/4) ... [2018-11-10 12:34:33,499 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 12:34:33,506 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 12:34:33,506 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-11-10 12:34:33,507 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 12:34:33,511 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 12:34:33,511 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 12:34:33,511 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 12:34:33,549 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e9dec729-564a-4607-9cc2-0eeddec7cb2c/bin-2019/uautomizer/witness.graphml [2018-11-10 12:34:33,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 12:34:33,550 INFO L168 Benchmark]: Toolchain (without parser) took 28692.91 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 680.0 MB). Free memory was 961.8 MB in the beginning and 1.4 GB in the end (delta: -466.1 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. [2018-11-10 12:34:33,551 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:34:33,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.96 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 12:34:33,551 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 ms. Allocated memory is still 1.0 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 12:34:33,552 INFO L168 Benchmark]: RCFGBuilder took 209.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.1 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-11-10 12:34:33,552 INFO L168 Benchmark]: TraceAbstraction took 28277.16 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 534.2 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -300.1 MB). Peak memory consumption was 234.2 MB. Max. memory is 11.5 GB. [2018-11-10 12:34:33,552 INFO L168 Benchmark]: Witness Printer took 53.35 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.2 kB). Peak memory consumption was 21.2 kB. Max. memory is 11.5 GB. [2018-11-10 12:34:33,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.96 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 951.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.01 ms. Allocated memory is still 1.0 GB. Free memory is still 951.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 209.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 951.1 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28277.16 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 534.2 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -300.1 MB). Peak memory consumption was 234.2 MB. Max. memory is 11.5 GB. * Witness Printer took 53.35 ms. Allocated memory is still 1.7 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.2 kB). Peak memory consumption was 21.2 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 6 error locations. SAFE Result, 28.2s OverallTime, 40 OverallIterations, 32 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 1107 SDtfs, 2516 SDslu, 13411 SDs, 0 SdLazy, 6429 SolverSat, 284 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7831 GetRequests, 6246 SyntacticMatches, 438 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23754 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=33, 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, 40 MinimizatonAttempts, 215 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 45 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 323 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 13372 NumberOfCodeBlocks, 13277 NumberOfCodeBlocksAsserted, 387 NumberOfCheckSat, 13296 ConstructedInterpolants, 0 QuantifiedInterpolants, 7236024 SizeOfPredicates, 60 NumberOfNonLiveVariables, 11368 ConjunctsInSsa, 1092 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 70761/133450 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...