./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 32bit --witnessprinter.graph.data.programhash f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 13:24:19,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:24:19,336 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:24:19,343 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:24:19,343 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:24:19,344 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:24:19,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:24:19,346 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:24:19,347 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:24:19,347 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:24:19,348 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:24:19,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:24:19,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:24:19,349 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:24:19,350 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:24:19,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:24:19,351 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:24:19,352 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:24:19,353 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:24:19,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:24:19,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:24:19,355 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:24:19,357 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:24:19,357 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:24:19,357 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:24:19,357 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:24:19,358 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:24:19,358 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:24:19,359 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:24:19,360 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:24:19,360 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:24:19,360 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:24:19,360 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:24:19,361 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:24:19,361 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:24:19,362 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:24:19,362 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-28 13:24:19,372 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:24:19,372 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:24:19,373 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 13:24:19,373 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 13:24:19,373 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:24:19,374 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:24:19,374 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:24:19,374 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:24:19,374 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:24:19,374 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:24:19,374 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:24:19,374 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:24:19,375 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:24:19,376 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:24:19,376 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 13:24:19,376 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:24:19,376 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:24:19,376 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 13:24:19,376 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 13:24:19,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 13:24:19,377 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:24:19,377 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 13:24:19,377 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 13:24:19,377 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:24:19,377 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 13:24:19,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 13:24:19,378 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_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f48e7b9931723f1165b5bb8f3d86571b9aa1aa14 [2018-11-28 13:24:19,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:24:19,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:24:19,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:24:19,414 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:24:19,414 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:24:19,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 13:24:19,457 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/data/cf88288f2/85fd125381db466a9194c6c70eb4ccc0/FLAG883f90557 [2018-11-28 13:24:19,760 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:24:19,761 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 13:24:19,765 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/data/cf88288f2/85fd125381db466a9194c6c70eb4ccc0/FLAG883f90557 [2018-11-28 13:24:19,775 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/data/cf88288f2/85fd125381db466a9194c6c70eb4ccc0 [2018-11-28 13:24:19,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:24:19,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:24:19,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:24:19,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:24:19,781 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:24:19,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3375cb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19, skipping insertion in model container [2018-11-28 13:24:19,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:24:19,798 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:24:19,895 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:24:19,897 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:24:19,907 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:24:19,916 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:24:19,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19 WrapperNode [2018-11-28 13:24:19,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:24:19,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:24:19,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:24:19,917 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:24:19,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:24:19,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:24:19,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:24:19,931 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:24:19,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... [2018-11-28 13:24:19,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:24:19,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:24:19,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:24:19,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:24:19,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 13:24:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 13:24:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-11-28 13:24:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-11-28 13:24:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:24:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:24:20,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 13:24:20,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 13:24:20,114 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:24:20,114 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 13:24:20,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:24:20 BoogieIcfgContainer [2018-11-28 13:24:20,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:24:20,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 13:24:20,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 13:24:20,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 13:24:20,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 01:24:19" (1/3) ... [2018-11-28 13:24:20,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b69029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:24:20, skipping insertion in model container [2018-11-28 13:24:20,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:19" (2/3) ... [2018-11-28 13:24:20,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b69029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 01:24:20, skipping insertion in model container [2018-11-28 13:24:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:24:20" (3/3) ... [2018-11-28 13:24:20,120 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 13:24:20,126 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 13:24:20,130 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 13:24:20,140 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 13:24:20,160 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:24:20,161 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 13:24:20,161 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 13:24:20,161 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 13:24:20,161 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:24:20,161 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:24:20,161 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 13:24:20,161 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:24:20,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 13:24:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-28 13:24:20,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 13:24:20,180 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:20,181 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,182 INFO L423 AbstractCegarLoop]: === Iteration 1 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:20,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1002909108, now seen corresponding path program 1 times [2018-11-28 13:24:20,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:20,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:24:20,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:24:20,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:24:20,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:24:20,302 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-11-28 13:24:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,376 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-28 13:24:20,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 13:24:20,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-28 13:24:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:20,383 INFO L225 Difference]: With dead ends: 38 [2018-11-28 13:24:20,383 INFO L226 Difference]: Without dead ends: 24 [2018-11-28 13:24:20,386 INFO L631 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 [2018-11-28 13:24:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-28 13:24:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-28 13:24:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 13:24:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-28 13:24:20,409 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2018-11-28 13:24:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:20,410 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-28 13:24:20,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:24:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-28 13:24:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 13:24:20,410 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:20,410 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,411 INFO L423 AbstractCegarLoop]: === Iteration 2 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:20,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1025411315, now seen corresponding path program 1 times [2018-11-28 13:24:20,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:20,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:24:20,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 13:24:20,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:24:20,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:24:20,450 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-11-28 13:24:20,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,521 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-11-28 13:24:20,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:24:20,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 13:24:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:20,523 INFO L225 Difference]: With dead ends: 43 [2018-11-28 13:24:20,523 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 13:24:20,524 INFO L631 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 [2018-11-28 13:24:20,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 13:24:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-11-28 13:24:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 13:24:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-28 13:24:20,532 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2018-11-28 13:24:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:20,532 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-28 13:24:20,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 13:24:20,532 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-28 13:24:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 13:24:20,533 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:20,533 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,534 INFO L423 AbstractCegarLoop]: === Iteration 3 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:20,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,534 INFO L82 PathProgramCache]: Analyzing trace with hash -80939849, now seen corresponding path program 1 times [2018-11-28 13:24:20,534 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:20,592 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:20,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:20,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 13:24:20,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 13:24:20,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 13:24:20,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 13:24:20,646 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-11-28 13:24:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,733 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-28 13:24:20,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 13:24:20,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-28 13:24:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:20,734 INFO L225 Difference]: With dead ends: 59 [2018-11-28 13:24:20,734 INFO L226 Difference]: Without dead ends: 58 [2018-11-28 13:24:20,735 INFO L631 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 [2018-11-28 13:24:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-28 13:24:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-11-28 13:24:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 13:24:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-11-28 13:24:20,741 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 16 [2018-11-28 13:24:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:20,742 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-11-28 13:24:20,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 13:24:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-11-28 13:24:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 13:24:20,742 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:20,743 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,743 INFO L423 AbstractCegarLoop]: === Iteration 4 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:20,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash -474289655, now seen corresponding path program 1 times [2018-11-28 13:24:20,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:24:20,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:20,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:24:20,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:24:20,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:24:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:24:20,781 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 4 states. [2018-11-28 13:24:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,804 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2018-11-28 13:24:20,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:24:20,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-28 13:24:20,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:20,806 INFO L225 Difference]: With dead ends: 67 [2018-11-28 13:24:20,806 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 13:24:20,806 INFO L631 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 [2018-11-28 13:24:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 13:24:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-11-28 13:24:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 13:24:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2018-11-28 13:24:20,814 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 18 [2018-11-28 13:24:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:20,814 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2018-11-28 13:24:20,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:24:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2018-11-28 13:24:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 13:24:20,815 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:20,815 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,815 INFO L423 AbstractCegarLoop]: === Iteration 5 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:20,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1818077372, now seen corresponding path program 1 times [2018-11-28 13:24:20,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 13:24:20,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:20,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:24:20,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 13:24:20,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:24:20,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:24:20,836 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 4 states. [2018-11-28 13:24:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,849 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 13:24:20,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:24:20,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-28 13:24:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:20,850 INFO L225 Difference]: With dead ends: 62 [2018-11-28 13:24:20,850 INFO L226 Difference]: Without dead ends: 53 [2018-11-28 13:24:20,850 INFO L631 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 [2018-11-28 13:24:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-28 13:24:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-28 13:24:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-28 13:24:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-11-28 13:24:20,855 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 19 [2018-11-28 13:24:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:20,855 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-11-28 13:24:20,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 13:24:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-11-28 13:24:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 13:24:20,856 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:20,856 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,856 INFO L423 AbstractCegarLoop]: === Iteration 6 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:20,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1159773325, now seen corresponding path program 2 times [2018-11-28 13:24:20,857 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:20,901 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:20,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:24:20,916 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:24:20,916 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:20,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:20,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 13:24:20,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 13:24:20,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 13:24:20,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 13:24:20,940 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2018-11-28 13:24:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,027 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-11-28 13:24:21,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 13:24:21,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-28 13:24:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:21,031 INFO L225 Difference]: With dead ends: 78 [2018-11-28 13:24:21,031 INFO L226 Difference]: Without dead ends: 77 [2018-11-28 13:24:21,031 INFO L631 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 [2018-11-28 13:24:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-28 13:24:21,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2018-11-28 13:24:21,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-28 13:24:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-11-28 13:24:21,038 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 21 [2018-11-28 13:24:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:21,038 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-11-28 13:24:21,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 13:24:21,038 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-11-28 13:24:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 13:24:21,039 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:21,039 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:21,039 INFO L423 AbstractCegarLoop]: === Iteration 7 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:21,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1430047287, now seen corresponding path program 3 times [2018-11-28 13:24:21,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:21,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:21,113 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:21,127 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:24:21,134 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:24:21,135 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:21,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,158 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:21,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 13:24:21,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 13:24:21,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 13:24:21,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-28 13:24:21,159 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 11 states. [2018-11-28 13:24:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,306 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-11-28 13:24:21,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 13:24:21,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-28 13:24:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:21,308 INFO L225 Difference]: With dead ends: 98 [2018-11-28 13:24:21,308 INFO L226 Difference]: Without dead ends: 97 [2018-11-28 13:24:21,309 INFO L631 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 [2018-11-28 13:24:21,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-28 13:24:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-11-28 13:24:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-28 13:24:21,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2018-11-28 13:24:21,317 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2018-11-28 13:24:21,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:21,317 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2018-11-28 13:24:21,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 13:24:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2018-11-28 13:24:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 13:24:21,318 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:21,318 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:21,318 INFO L423 AbstractCegarLoop]: === Iteration 8 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:21,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1529291277, now seen corresponding path program 4 times [2018-11-28 13:24:21,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:21,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,416 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:21,416 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:21,426 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:24:21,434 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:24:21,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:21,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,459 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:21,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 13:24:21,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 13:24:21,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 13:24:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-28 13:24:21,460 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2018-11-28 13:24:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,573 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2018-11-28 13:24:21,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 13:24:21,574 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-28 13:24:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:21,575 INFO L225 Difference]: With dead ends: 118 [2018-11-28 13:24:21,575 INFO L226 Difference]: Without dead ends: 117 [2018-11-28 13:24:21,575 INFO L631 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 [2018-11-28 13:24:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-28 13:24:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2018-11-28 13:24:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-28 13:24:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2018-11-28 13:24:21,584 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 31 [2018-11-28 13:24:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:21,584 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2018-11-28 13:24:21,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 13:24:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2018-11-28 13:24:21,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 13:24:21,585 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:21,585 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:21,586 INFO L423 AbstractCegarLoop]: === Iteration 9 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:21,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,587 INFO L82 PathProgramCache]: Analyzing trace with hash -10526561, now seen corresponding path program 1 times [2018-11-28 13:24:21,587 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:21,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 13:24:21,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:21,625 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:21,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 13:24:21,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:21,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 13:24:21,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 13:24:21,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 13:24:21,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 13:24:21,687 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 6 states. [2018-11-28 13:24:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,705 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2018-11-28 13:24:21,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:24:21,706 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-28 13:24:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:21,706 INFO L225 Difference]: With dead ends: 153 [2018-11-28 13:24:21,707 INFO L226 Difference]: Without dead ends: 138 [2018-11-28 13:24:21,707 INFO L631 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 [2018-11-28 13:24:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-28 13:24:21,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-11-28 13:24:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-11-28 13:24:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2018-11-28 13:24:21,715 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 30 [2018-11-28 13:24:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:21,716 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2018-11-28 13:24:21,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 13:24:21,716 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2018-11-28 13:24:21,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-28 13:24:21,717 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:21,717 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:21,717 INFO L423 AbstractCegarLoop]: === Iteration 10 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:21,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1671413687, now seen corresponding path program 5 times [2018-11-28 13:24:21,718 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:21,834 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:21,842 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:24:21,854 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 13:24:21,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:21,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,875 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:21,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-28 13:24:21,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 13:24:21,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 13:24:21,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-11-28 13:24:21,876 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand 15 states. [2018-11-28 13:24:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:22,003 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2018-11-28 13:24:22,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 13:24:22,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-11-28 13:24:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:22,004 INFO L225 Difference]: With dead ends: 171 [2018-11-28 13:24:22,004 INFO L226 Difference]: Without dead ends: 170 [2018-11-28 13:24:22,005 INFO L631 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 [2018-11-28 13:24:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-11-28 13:24:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-11-28 13:24:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-11-28 13:24:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-11-28 13:24:22,012 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 36 [2018-11-28 13:24:22,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:22,012 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-11-28 13:24:22,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 13:24:22,012 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-11-28 13:24:22,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 13:24:22,013 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:22,013 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:22,014 INFO L423 AbstractCegarLoop]: === Iteration 11 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:22,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:22,014 INFO L82 PathProgramCache]: Analyzing trace with hash 829642867, now seen corresponding path program 6 times [2018-11-28 13:24:22,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:22,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:22,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:22,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:22,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:22,118 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:22,133 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:24:22,145 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 13:24:22,146 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:22,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:24:22,218 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:22,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2018-11-28 13:24:22,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:24:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:24:22,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:24:22,219 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 18 states. [2018-11-28 13:24:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:22,243 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2018-11-28 13:24:22,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 13:24:22,244 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2018-11-28 13:24:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:22,245 INFO L225 Difference]: With dead ends: 158 [2018-11-28 13:24:22,245 INFO L226 Difference]: Without dead ends: 157 [2018-11-28 13:24:22,245 INFO L631 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 [2018-11-28 13:24:22,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-28 13:24:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-11-28 13:24:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-28 13:24:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2018-11-28 13:24:22,252 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 175 transitions. Word has length 41 [2018-11-28 13:24:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:22,252 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 175 transitions. [2018-11-28 13:24:22,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:24:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 175 transitions. [2018-11-28 13:24:22,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 13:24:22,254 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:22,254 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:22,254 INFO L423 AbstractCegarLoop]: === Iteration 12 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:22,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:22,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1233481545, now seen corresponding path program 2 times [2018-11-28 13:24:22,254 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:22,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:22,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:22,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:24:22,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:22,309 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:22,315 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:24:22,322 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:24:22,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:22,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 13:24:22,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:22,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 13:24:22,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 13:24:22,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 13:24:22,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-28 13:24:22,354 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. Second operand 8 states. [2018-11-28 13:24:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:22,393 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2018-11-28 13:24:22,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 13:24:22,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-11-28 13:24:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:22,395 INFO L225 Difference]: With dead ends: 211 [2018-11-28 13:24:22,395 INFO L226 Difference]: Without dead ends: 189 [2018-11-28 13:24:22,395 INFO L631 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 [2018-11-28 13:24:22,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-11-28 13:24:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2018-11-28 13:24:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-11-28 13:24:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 201 transitions. [2018-11-28 13:24:22,403 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 201 transitions. Word has length 42 [2018-11-28 13:24:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:22,403 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 201 transitions. [2018-11-28 13:24:22,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 13:24:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 201 transitions. [2018-11-28 13:24:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-28 13:24:22,405 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:22,405 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:22,405 INFO L423 AbstractCegarLoop]: === Iteration 13 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:22,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:22,406 INFO L82 PathProgramCache]: Analyzing trace with hash -677419169, now seen corresponding path program 3 times [2018-11-28 13:24:22,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:22,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:22,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,407 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:22,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-28 13:24:22,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:22,456 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:22,462 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:24:22,474 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 13:24:22,474 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:22,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-28 13:24:22,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:22,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 13:24:22,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 13:24:22,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 13:24:22,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-28 13:24:22,529 INFO L87 Difference]: Start difference. First operand 183 states and 201 transitions. Second operand 10 states. [2018-11-28 13:24:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:22,564 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2018-11-28 13:24:22,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 13:24:22,564 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-28 13:24:22,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:22,565 INFO L225 Difference]: With dead ends: 237 [2018-11-28 13:24:22,565 INFO L226 Difference]: Without dead ends: 208 [2018-11-28 13:24:22,566 INFO L631 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 [2018-11-28 13:24:22,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-11-28 13:24:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2018-11-28 13:24:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-11-28 13:24:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2018-11-28 13:24:22,574 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 54 [2018-11-28 13:24:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:22,574 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2018-11-28 13:24:22,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 13:24:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2018-11-28 13:24:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-28 13:24:22,576 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:22,576 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:22,576 INFO L423 AbstractCegarLoop]: === Iteration 14 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:22,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:22,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1491778423, now seen corresponding path program 4 times [2018-11-28 13:24:22,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:22,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:22,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:22,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-28 13:24:22,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:22,650 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:22,657 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:24:22,667 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:24:22,668 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:22,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-28 13:24:22,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:22,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 13:24:22,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 13:24:22,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 13:24:22,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-28 13:24:22,724 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand 12 states. [2018-11-28 13:24:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:22,785 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2018-11-28 13:24:22,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 13:24:22,786 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-11-28 13:24:22,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:22,787 INFO L225 Difference]: With dead ends: 256 [2018-11-28 13:24:22,787 INFO L226 Difference]: Without dead ends: 220 [2018-11-28 13:24:22,787 INFO L631 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 [2018-11-28 13:24:22,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-11-28 13:24:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2018-11-28 13:24:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-11-28 13:24:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2018-11-28 13:24:22,793 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 66 [2018-11-28 13:24:22,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:22,793 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2018-11-28 13:24:22,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 13:24:22,793 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2018-11-28 13:24:22,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-28 13:24:22,794 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:22,794 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:22,794 INFO L423 AbstractCegarLoop]: === Iteration 15 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:22,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:22,794 INFO L82 PathProgramCache]: Analyzing trace with hash 501489183, now seen corresponding path program 5 times [2018-11-28 13:24:22,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:22,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:22,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,795 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:22,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-28 13:24:22,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:22,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:22,899 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:24:22,915 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-28 13:24:22,915 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:22,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-28 13:24:23,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:23,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-28 13:24:23,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 13:24:23,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 13:24:23,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-28 13:24:23,005 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand 14 states. [2018-11-28 13:24:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:23,042 INFO L93 Difference]: Finished difference Result 268 states and 298 transitions. [2018-11-28 13:24:23,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 13:24:23,043 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-11-28 13:24:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:23,043 INFO L225 Difference]: With dead ends: 268 [2018-11-28 13:24:23,044 INFO L226 Difference]: Without dead ends: 227 [2018-11-28 13:24:23,044 INFO L631 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 [2018-11-28 13:24:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-11-28 13:24:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2018-11-28 13:24:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-11-28 13:24:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-11-28 13:24:23,051 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 78 [2018-11-28 13:24:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:23,052 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-11-28 13:24:23,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 13:24:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-11-28 13:24:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-28 13:24:23,053 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:23,053 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:23,053 INFO L423 AbstractCegarLoop]: === Iteration 16 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:23,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1033999927, now seen corresponding path program 6 times [2018-11-28 13:24:23,054 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:23,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:23,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:23,054 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:23,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:23,154 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-28 13:24:23,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:23,155 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:23,164 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:24:23,186 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-28 13:24:23,186 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:23,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-28 13:24:23,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:23,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 13:24:23,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 13:24:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 13:24:23,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-28 13:24:23,278 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 16 states. [2018-11-28 13:24:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:23,323 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2018-11-28 13:24:23,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 13:24:23,323 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2018-11-28 13:24:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:23,324 INFO L225 Difference]: With dead ends: 275 [2018-11-28 13:24:23,324 INFO L226 Difference]: Without dead ends: 234 [2018-11-28 13:24:23,324 INFO L631 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 [2018-11-28 13:24:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-11-28 13:24:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2018-11-28 13:24:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-11-28 13:24:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2018-11-28 13:24:23,331 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 90 [2018-11-28 13:24:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:23,331 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2018-11-28 13:24:23,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 13:24:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2018-11-28 13:24:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-28 13:24:23,333 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:23,333 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:23,333 INFO L423 AbstractCegarLoop]: === Iteration 17 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:23,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:23,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1169786079, now seen corresponding path program 7 times [2018-11-28 13:24:23,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:23,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:23,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:23,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:23,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-28 13:24:23,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:23,449 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:23,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:23,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-28 13:24:23,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:23,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 13:24:23,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 13:24:23,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 13:24:23,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-28 13:24:23,600 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand 18 states. [2018-11-28 13:24:23,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:23,673 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2018-11-28 13:24:23,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 13:24:23,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2018-11-28 13:24:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:23,675 INFO L225 Difference]: With dead ends: 282 [2018-11-28 13:24:23,676 INFO L226 Difference]: Without dead ends: 241 [2018-11-28 13:24:23,676 INFO L631 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 [2018-11-28 13:24:23,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-11-28 13:24:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2018-11-28 13:24:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-11-28 13:24:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2018-11-28 13:24:23,684 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 102 [2018-11-28 13:24:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:23,685 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2018-11-28 13:24:23,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 13:24:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2018-11-28 13:24:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-28 13:24:23,688 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:23,688 INFO L402 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:23,688 INFO L423 AbstractCegarLoop]: === Iteration 18 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:23,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:23,689 INFO L82 PathProgramCache]: Analyzing trace with hash 117714501, now seen corresponding path program 8 times [2018-11-28 13:24:23,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:23,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:23,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:23,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:23,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-11-28 13:24:23,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:23,848 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:23,855 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:24:23,877 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:24:23,878 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:23,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-11-28 13:24:24,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:24,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 13:24:24,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 13:24:24,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 13:24:24,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-28 13:24:24,022 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 20 states. [2018-11-28 13:24:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:24,091 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2018-11-28 13:24:24,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 13:24:24,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2018-11-28 13:24:24,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:24,093 INFO L225 Difference]: With dead ends: 289 [2018-11-28 13:24:24,093 INFO L226 Difference]: Without dead ends: 248 [2018-11-28 13:24:24,093 INFO L631 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 [2018-11-28 13:24:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-11-28 13:24:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2018-11-28 13:24:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-11-28 13:24:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 260 transitions. [2018-11-28 13:24:24,101 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 260 transitions. Word has length 149 [2018-11-28 13:24:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:24,101 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 260 transitions. [2018-11-28 13:24:24,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 13:24:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 260 transitions. [2018-11-28 13:24:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-28 13:24:24,103 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:24,103 INFO L402 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:24,103 INFO L423 AbstractCegarLoop]: === Iteration 19 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:24,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:24,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2054033189, now seen corresponding path program 9 times [2018-11-28 13:24:24,104 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:24,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:24,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:24,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:24,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-28 13:24:24,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:24,277 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:24,289 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:24:24,321 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 13:24:24,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:24,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-28 13:24:24,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:24,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-28 13:24:24,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 13:24:24,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 13:24:24,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:24:24,463 INFO L87 Difference]: Start difference. First operand 242 states and 260 transitions. Second operand 22 states. [2018-11-28 13:24:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:24,533 INFO L93 Difference]: Finished difference Result 296 states and 326 transitions. [2018-11-28 13:24:24,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 13:24:24,533 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 161 [2018-11-28 13:24:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:24,534 INFO L225 Difference]: With dead ends: 296 [2018-11-28 13:24:24,534 INFO L226 Difference]: Without dead ends: 255 [2018-11-28 13:24:24,535 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 152 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-28 13:24:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-11-28 13:24:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2018-11-28 13:24:24,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-11-28 13:24:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2018-11-28 13:24:24,540 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 161 [2018-11-28 13:24:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:24,540 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2018-11-28 13:24:24,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 13:24:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2018-11-28 13:24:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-28 13:24:24,542 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:24,542 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:24,542 INFO L423 AbstractCegarLoop]: === Iteration 20 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:24,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:24,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1561549751, now seen corresponding path program 10 times [2018-11-28 13:24:24,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:24,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:24,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:24,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:24,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-28 13:24:24,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:24,692 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:24,710 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:24:24,753 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:24:24,754 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:24,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-11-28 13:24:24,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:24,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-28 13:24:24,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-28 13:24:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-28 13:24:24,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-28 13:24:24,883 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 24 states. [2018-11-28 13:24:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:25,022 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2018-11-28 13:24:25,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-28 13:24:25,022 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 138 [2018-11-28 13:24:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:25,023 INFO L225 Difference]: With dead ends: 303 [2018-11-28 13:24:25,024 INFO L226 Difference]: Without dead ends: 262 [2018-11-28 13:24:25,024 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 128 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-28 13:24:25,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-11-28 13:24:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2018-11-28 13:24:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-11-28 13:24:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2018-11-28 13:24:25,031 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 138 [2018-11-28 13:24:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:25,031 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2018-11-28 13:24:25,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-28 13:24:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2018-11-28 13:24:25,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-28 13:24:25,033 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:25,033 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:25,033 INFO L423 AbstractCegarLoop]: === Iteration 21 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:25,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:25,034 INFO L82 PathProgramCache]: Analyzing trace with hash 705676187, now seen corresponding path program 11 times [2018-11-28 13:24:25,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:25,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:25,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:25,034 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:25,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-11-28 13:24:25,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:25,250 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:25,256 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:24:25,317 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2018-11-28 13:24:25,317 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:25,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-11-28 13:24:25,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:25,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-28 13:24:25,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-28 13:24:25,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-28 13:24:25,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-28 13:24:25,560 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 26 states. [2018-11-28 13:24:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:25,645 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2018-11-28 13:24:25,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-28 13:24:25,646 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 185 [2018-11-28 13:24:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:25,647 INFO L225 Difference]: With dead ends: 310 [2018-11-28 13:24:25,647 INFO L226 Difference]: Without dead ends: 269 [2018-11-28 13:24:25,648 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 174 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-28 13:24:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-11-28 13:24:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2018-11-28 13:24:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-11-28 13:24:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 281 transitions. [2018-11-28 13:24:25,654 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 281 transitions. Word has length 185 [2018-11-28 13:24:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:25,655 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 281 transitions. [2018-11-28 13:24:25,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-28 13:24:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 281 transitions. [2018-11-28 13:24:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-28 13:24:25,657 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:25,657 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:25,657 INFO L423 AbstractCegarLoop]: === Iteration 22 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:25,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:25,657 INFO L82 PathProgramCache]: Analyzing trace with hash 219789705, now seen corresponding path program 12 times [2018-11-28 13:24:25,657 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:25,657 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:25,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:25,658 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:25,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-11-28 13:24:25,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:25,919 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:25,925 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:24:25,953 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-11-28 13:24:25,953 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:25,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-11-28 13:24:26,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:26,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-28 13:24:26,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-28 13:24:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-28 13:24:26,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-11-28 13:24:26,155 INFO L87 Difference]: Start difference. First operand 263 states and 281 transitions. Second operand 28 states. [2018-11-28 13:24:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:26,224 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2018-11-28 13:24:26,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-28 13:24:26,224 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 162 [2018-11-28 13:24:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:26,225 INFO L225 Difference]: With dead ends: 317 [2018-11-28 13:24:26,225 INFO L226 Difference]: Without dead ends: 276 [2018-11-28 13:24:26,225 INFO L631 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 [2018-11-28 13:24:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-11-28 13:24:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2018-11-28 13:24:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-11-28 13:24:26,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2018-11-28 13:24:26,232 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 162 [2018-11-28 13:24:26,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:26,232 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2018-11-28 13:24:26,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-28 13:24:26,233 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2018-11-28 13:24:26,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-28 13:24:26,234 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:26,234 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:26,235 INFO L423 AbstractCegarLoop]: === Iteration 23 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:26,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:26,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1595267359, now seen corresponding path program 13 times [2018-11-28 13:24:26,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:26,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:26,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:26,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:26,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-11-28 13:24:26,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:26,453 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:26,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:26,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-11-28 13:24:26,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:26,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-28 13:24:26,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-28 13:24:26,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-28 13:24:26,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-11-28 13:24:26,683 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 30 states. [2018-11-28 13:24:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:26,761 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2018-11-28 13:24:26,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-28 13:24:26,761 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2018-11-28 13:24:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:26,763 INFO L225 Difference]: With dead ends: 324 [2018-11-28 13:24:26,763 INFO L226 Difference]: Without dead ends: 283 [2018-11-28 13:24:26,763 INFO L631 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 [2018-11-28 13:24:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-11-28 13:24:26,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2018-11-28 13:24:26,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-11-28 13:24:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 295 transitions. [2018-11-28 13:24:26,768 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 295 transitions. Word has length 174 [2018-11-28 13:24:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:26,768 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 295 transitions. [2018-11-28 13:24:26,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-28 13:24:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 295 transitions. [2018-11-28 13:24:26,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-28 13:24:26,769 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:26,769 INFO L402 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:26,770 INFO L423 AbstractCegarLoop]: === Iteration 24 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:26,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash -611151355, now seen corresponding path program 14 times [2018-11-28 13:24:26,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:26,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:26,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:26,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:26,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-11-28 13:24:27,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:27,035 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:27,042 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:24:27,069 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:24:27,070 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:27,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-11-28 13:24:27,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:27,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-28 13:24:27,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-28 13:24:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-28 13:24:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-28 13:24:27,297 INFO L87 Difference]: Start difference. First operand 277 states and 295 transitions. Second operand 32 states. [2018-11-28 13:24:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:27,365 INFO L93 Difference]: Finished difference Result 331 states and 361 transitions. [2018-11-28 13:24:27,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-28 13:24:27,366 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 221 [2018-11-28 13:24:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:27,367 INFO L225 Difference]: With dead ends: 331 [2018-11-28 13:24:27,367 INFO L226 Difference]: Without dead ends: 290 [2018-11-28 13:24:27,368 INFO L631 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 [2018-11-28 13:24:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-28 13:24:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2018-11-28 13:24:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-11-28 13:24:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 302 transitions. [2018-11-28 13:24:27,375 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 302 transitions. Word has length 221 [2018-11-28 13:24:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:27,375 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 302 transitions. [2018-11-28 13:24:27,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-28 13:24:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 302 transitions. [2018-11-28 13:24:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-28 13:24:27,376 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:27,377 INFO L402 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:27,377 INFO L423 AbstractCegarLoop]: === Iteration 25 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:27,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 2030663963, now seen corresponding path program 15 times [2018-11-28 13:24:27,377 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:27,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:27,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:27,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:27,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:27,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-28 13:24:27,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:27,722 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:27,729 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:24:27,757 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-28 13:24:27,757 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:27,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:27,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-28 13:24:28,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:28,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-28 13:24:28,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-28 13:24:28,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-28 13:24:28,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 13:24:28,023 INFO L87 Difference]: Start difference. First operand 284 states and 302 transitions. Second operand 34 states. [2018-11-28 13:24:28,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:28,101 INFO L93 Difference]: Finished difference Result 338 states and 368 transitions. [2018-11-28 13:24:28,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-28 13:24:28,101 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 233 [2018-11-28 13:24:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:28,102 INFO L225 Difference]: With dead ends: 338 [2018-11-28 13:24:28,102 INFO L226 Difference]: Without dead ends: 297 [2018-11-28 13:24:28,103 INFO L631 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 [2018-11-28 13:24:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-11-28 13:24:28,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2018-11-28 13:24:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-11-28 13:24:28,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 309 transitions. [2018-11-28 13:24:28,109 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 309 transitions. Word has length 233 [2018-11-28 13:24:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:28,109 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 309 transitions. [2018-11-28 13:24:28,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-28 13:24:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 309 transitions. [2018-11-28 13:24:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-28 13:24:28,111 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:28,111 INFO L402 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:28,111 INFO L423 AbstractCegarLoop]: === Iteration 26 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:28,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:28,111 INFO L82 PathProgramCache]: Analyzing trace with hash -687614967, now seen corresponding path program 16 times [2018-11-28 13:24:28,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:28,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:28,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:28,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:28,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-28 13:24:28,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:28,481 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:28,489 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:24:28,516 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:24:28,516 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:28,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-28 13:24:28,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:28,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-28 13:24:28,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-28 13:24:28,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-28 13:24:28,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 13:24:28,798 INFO L87 Difference]: Start difference. First operand 291 states and 309 transitions. Second operand 36 states. [2018-11-28 13:24:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:28,891 INFO L93 Difference]: Finished difference Result 345 states and 375 transitions. [2018-11-28 13:24:28,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-28 13:24:28,891 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 210 [2018-11-28 13:24:28,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:28,892 INFO L225 Difference]: With dead ends: 345 [2018-11-28 13:24:28,892 INFO L226 Difference]: Without dead ends: 304 [2018-11-28 13:24:28,893 INFO L631 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 [2018-11-28 13:24:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-11-28 13:24:28,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2018-11-28 13:24:28,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-11-28 13:24:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 316 transitions. [2018-11-28 13:24:28,897 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 316 transitions. Word has length 210 [2018-11-28 13:24:28,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:28,898 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 316 transitions. [2018-11-28 13:24:28,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-28 13:24:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 316 transitions. [2018-11-28 13:24:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-28 13:24:28,899 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:28,899 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:28,899 INFO L423 AbstractCegarLoop]: === Iteration 27 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:28,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash 362634203, now seen corresponding path program 17 times [2018-11-28 13:24:28,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:28,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:28,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:28,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:28,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-28 13:24:29,216 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:29,216 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:29,223 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:24:29,291 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-11-28 13:24:29,291 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:29,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-28 13:24:29,564 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:29,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-28 13:24:29,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-28 13:24:29,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-28 13:24:29,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:24:29,565 INFO L87 Difference]: Start difference. First operand 298 states and 316 transitions. Second operand 38 states. [2018-11-28 13:24:29,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:29,642 INFO L93 Difference]: Finished difference Result 352 states and 382 transitions. [2018-11-28 13:24:29,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-28 13:24:29,643 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 257 [2018-11-28 13:24:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:29,644 INFO L225 Difference]: With dead ends: 352 [2018-11-28 13:24:29,644 INFO L226 Difference]: Without dead ends: 311 [2018-11-28 13:24:29,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 17 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 13:24:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-11-28 13:24:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2018-11-28 13:24:29,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-11-28 13:24:29,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 323 transitions. [2018-11-28 13:24:29,653 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 323 transitions. Word has length 257 [2018-11-28 13:24:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:29,653 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 323 transitions. [2018-11-28 13:24:29,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-28 13:24:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 323 transitions. [2018-11-28 13:24:29,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-28 13:24:29,655 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:29,655 INFO L402 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:29,655 INFO L423 AbstractCegarLoop]: === Iteration 28 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:29,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:29,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2128176261, now seen corresponding path program 18 times [2018-11-28 13:24:29,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:29,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:29,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:29,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:29,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-28 13:24:30,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:30,031 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:30,036 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:24:30,080 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-11-28 13:24:30,080 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:30,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-28 13:24:30,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:30,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-28 13:24:30,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-28 13:24:30,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-28 13:24:30,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-11-28 13:24:30,445 INFO L87 Difference]: Start difference. First operand 305 states and 323 transitions. Second operand 40 states. [2018-11-28 13:24:30,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:30,636 INFO L93 Difference]: Finished difference Result 359 states and 389 transitions. [2018-11-28 13:24:30,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-28 13:24:30,636 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 269 [2018-11-28 13:24:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:30,638 INFO L225 Difference]: With dead ends: 359 [2018-11-28 13:24:30,638 INFO L226 Difference]: Without dead ends: 318 [2018-11-28 13:24:30,638 INFO L631 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 [2018-11-28 13:24:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-11-28 13:24:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2018-11-28 13:24:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-11-28 13:24:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 330 transitions. [2018-11-28 13:24:30,643 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 330 transitions. Word has length 269 [2018-11-28 13:24:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:30,643 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 330 transitions. [2018-11-28 13:24:30,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-28 13:24:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 330 transitions. [2018-11-28 13:24:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-28 13:24:30,644 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:30,644 INFO L402 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:30,644 INFO L423 AbstractCegarLoop]: === Iteration 29 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:30,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:30,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1319497371, now seen corresponding path program 19 times [2018-11-28 13:24:30,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:30,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:30,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:30,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:30,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-28 13:24:31,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:31,069 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:31,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:31,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-28 13:24:31,464 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:31,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-28 13:24:31,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-28 13:24:31,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-28 13:24:31,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 13:24:31,465 INFO L87 Difference]: Start difference. First operand 312 states and 330 transitions. Second operand 42 states. [2018-11-28 13:24:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:31,625 INFO L93 Difference]: Finished difference Result 366 states and 396 transitions. [2018-11-28 13:24:31,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-28 13:24:31,626 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 281 [2018-11-28 13:24:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:31,627 INFO L225 Difference]: With dead ends: 366 [2018-11-28 13:24:31,627 INFO L226 Difference]: Without dead ends: 325 [2018-11-28 13:24:31,628 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 262 SyntacticMatches, 19 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 13:24:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-11-28 13:24:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2018-11-28 13:24:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-28 13:24:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 337 transitions. [2018-11-28 13:24:31,634 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 337 transitions. Word has length 281 [2018-11-28 13:24:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:31,634 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 337 transitions. [2018-11-28 13:24:31,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-28 13:24:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 337 transitions. [2018-11-28 13:24:31,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-28 13:24:31,636 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:31,637 INFO L402 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:31,637 INFO L423 AbstractCegarLoop]: === Iteration 30 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:31,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:31,637 INFO L82 PathProgramCache]: Analyzing trace with hash 973391301, now seen corresponding path program 20 times [2018-11-28 13:24:31,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:31,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:31,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:31,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:31,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-28 13:24:32,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:32,154 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:32,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:24:32,189 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:24:32,189 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:32,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-28 13:24:32,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:32,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-28 13:24:32,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-28 13:24:32,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-28 13:24:32,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:24:32,563 INFO L87 Difference]: Start difference. First operand 319 states and 337 transitions. Second operand 44 states. [2018-11-28 13:24:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:32,691 INFO L93 Difference]: Finished difference Result 373 states and 403 transitions. [2018-11-28 13:24:32,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-28 13:24:32,691 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 293 [2018-11-28 13:24:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:32,692 INFO L225 Difference]: With dead ends: 373 [2018-11-28 13:24:32,692 INFO L226 Difference]: Without dead ends: 332 [2018-11-28 13:24:32,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 273 SyntacticMatches, 20 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:24:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-11-28 13:24:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2018-11-28 13:24:32,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-11-28 13:24:32,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 344 transitions. [2018-11-28 13:24:32,701 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 344 transitions. Word has length 293 [2018-11-28 13:24:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:32,702 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 344 transitions. [2018-11-28 13:24:32,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-28 13:24:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 344 transitions. [2018-11-28 13:24:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-28 13:24:32,703 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:32,703 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:32,704 INFO L423 AbstractCegarLoop]: === Iteration 31 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:32,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1062260389, now seen corresponding path program 21 times [2018-11-28 13:24:32,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:32,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:32,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:32,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:32,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:33,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-28 13:24:33,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:33,222 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:33,229 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:24:33,269 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-28 13:24:33,269 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:33,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-28 13:24:33,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:33,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-28 13:24:33,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-28 13:24:33,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-28 13:24:33,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-11-28 13:24:33,717 INFO L87 Difference]: Start difference. First operand 326 states and 344 transitions. Second operand 46 states. [2018-11-28 13:24:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:33,836 INFO L93 Difference]: Finished difference Result 380 states and 410 transitions. [2018-11-28 13:24:33,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-28 13:24:33,836 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 305 [2018-11-28 13:24:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:33,837 INFO L225 Difference]: With dead ends: 380 [2018-11-28 13:24:33,837 INFO L226 Difference]: Without dead ends: 339 [2018-11-28 13:24:33,838 INFO L631 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 [2018-11-28 13:24:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-11-28 13:24:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2018-11-28 13:24:33,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-11-28 13:24:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 351 transitions. [2018-11-28 13:24:33,844 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 351 transitions. Word has length 305 [2018-11-28 13:24:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:33,844 INFO L480 AbstractCegarLoop]: Abstraction has 333 states and 351 transitions. [2018-11-28 13:24:33,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-28 13:24:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 351 transitions. [2018-11-28 13:24:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-28 13:24:33,846 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:33,846 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:33,847 INFO L423 AbstractCegarLoop]: === Iteration 32 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:33,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:33,847 INFO L82 PathProgramCache]: Analyzing trace with hash -953846011, now seen corresponding path program 22 times [2018-11-28 13:24:33,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:33,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:33,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:33,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:33,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:34,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:34,499 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:34,507 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:24:34,546 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:24:34,546 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:34,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:34,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:34,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-28 13:24:34,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-28 13:24:34,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-28 13:24:34,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:24:34,953 INFO L87 Difference]: Start difference. First operand 333 states and 351 transitions. Second operand 48 states. [2018-11-28 13:24:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:35,074 INFO L93 Difference]: Finished difference Result 387 states and 417 transitions. [2018-11-28 13:24:35,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-28 13:24:35,074 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 317 [2018-11-28 13:24:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:35,075 INFO L225 Difference]: With dead ends: 387 [2018-11-28 13:24:35,075 INFO L226 Difference]: Without dead ends: 346 [2018-11-28 13:24:35,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 295 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 13:24:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-11-28 13:24:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2018-11-28 13:24:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-28 13:24:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 358 transitions. [2018-11-28 13:24:35,081 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 358 transitions. Word has length 317 [2018-11-28 13:24:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:35,081 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 358 transitions. [2018-11-28 13:24:35,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-28 13:24:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 358 transitions. [2018-11-28 13:24:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-11-28 13:24:35,083 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:35,083 INFO L402 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:35,083 INFO L423 AbstractCegarLoop]: === Iteration 33 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:35,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:35,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1555749861, now seen corresponding path program 23 times [2018-11-28 13:24:35,083 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:35,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:35,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:35,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:35,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-28 13:24:35,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:35,626 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:35,632 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:24:35,688 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-11-28 13:24:35,688 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:35,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-28 13:24:35,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:35,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-28 13:24:35,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-28 13:24:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-28 13:24:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 13:24:35,793 INFO L87 Difference]: Start difference. First operand 340 states and 358 transitions. Second operand 44 states. [2018-11-28 13:24:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:36,977 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2018-11-28 13:24:36,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-11-28 13:24:36,977 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 329 [2018-11-28 13:24:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:36,979 INFO L225 Difference]: With dead ends: 568 [2018-11-28 13:24:36,979 INFO L226 Difference]: Without dead ends: 399 [2018-11-28 13:24:36,986 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3952, Invalid=9388, Unknown=0, NotChecked=0, Total=13340 [2018-11-28 13:24:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-11-28 13:24:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2018-11-28 13:24:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-11-28 13:24:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 405 transitions. [2018-11-28 13:24:36,994 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 405 transitions. Word has length 329 [2018-11-28 13:24:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:36,994 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 405 transitions. [2018-11-28 13:24:36,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-28 13:24:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 405 transitions. [2018-11-28 13:24:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-28 13:24:36,996 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:36,996 INFO L402 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:36,996 INFO L423 AbstractCegarLoop]: === Iteration 34 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:36,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash 878541535, now seen corresponding path program 24 times [2018-11-28 13:24:36,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:36,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:36,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:36,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:36,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:37,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-11-28 13:24:37,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:37,571 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:37,577 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:24:37,628 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-28 13:24:37,628 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:37,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-11-28 13:24:38,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:38,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-28 13:24:38,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-28 13:24:38,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-28 13:24:38,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-11-28 13:24:38,121 INFO L87 Difference]: Start difference. First operand 387 states and 405 transitions. Second operand 50 states. [2018-11-28 13:24:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:38,235 INFO L93 Difference]: Finished difference Result 436 states and 463 transitions. [2018-11-28 13:24:38,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-28 13:24:38,235 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 294 [2018-11-28 13:24:38,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:38,236 INFO L225 Difference]: With dead ends: 436 [2018-11-28 13:24:38,236 INFO L226 Difference]: Without dead ends: 388 [2018-11-28 13:24:38,237 INFO L631 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 [2018-11-28 13:24:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-11-28 13:24:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-11-28 13:24:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-28 13:24:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 398 transitions. [2018-11-28 13:24:38,243 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 398 transitions. Word has length 294 [2018-11-28 13:24:38,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:38,243 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 398 transitions. [2018-11-28 13:24:38,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-28 13:24:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 398 transitions. [2018-11-28 13:24:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-28 13:24:38,245 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:38,246 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:38,246 INFO L423 AbstractCegarLoop]: === Iteration 35 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:38,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1456651717, now seen corresponding path program 25 times [2018-11-28 13:24:38,246 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:38,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:38,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:38,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:38,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:38,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:38,872 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:38,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:38,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:39,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:39,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-28 13:24:39,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-28 13:24:39,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-28 13:24:39,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:24:39,443 INFO L87 Difference]: Start difference. First operand 383 states and 398 transitions. Second operand 52 states. [2018-11-28 13:24:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:39,557 INFO L93 Difference]: Finished difference Result 424 states and 446 transitions. [2018-11-28 13:24:39,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-28 13:24:39,557 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 331 [2018-11-28 13:24:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:39,559 INFO L225 Difference]: With dead ends: 424 [2018-11-28 13:24:39,559 INFO L226 Difference]: Without dead ends: 376 [2018-11-28 13:24:39,559 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 307 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-28 13:24:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-11-28 13:24:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2018-11-28 13:24:39,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-11-28 13:24:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 384 transitions. [2018-11-28 13:24:39,564 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 384 transitions. Word has length 331 [2018-11-28 13:24:39,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:39,565 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 384 transitions. [2018-11-28 13:24:39,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-28 13:24:39,565 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 384 transitions. [2018-11-28 13:24:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-28 13:24:39,567 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:39,567 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:39,567 INFO L423 AbstractCegarLoop]: === Iteration 36 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:39,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2033410913, now seen corresponding path program 26 times [2018-11-28 13:24:39,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:39,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:39,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:39,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:39,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:40,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4435 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:40,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:40,202 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:40,220 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 13:24:40,267 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 13:24:40,268 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:40,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4435 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:40,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:40,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-28 13:24:40,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-28 13:24:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-28 13:24:40,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-28 13:24:40,796 INFO L87 Difference]: Start difference. First operand 372 states and 384 transitions. Second operand 54 states. [2018-11-28 13:24:40,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:40,941 INFO L93 Difference]: Finished difference Result 405 states and 422 transitions. [2018-11-28 13:24:40,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-28 13:24:40,941 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 338 [2018-11-28 13:24:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:40,942 INFO L225 Difference]: With dead ends: 405 [2018-11-28 13:24:40,942 INFO L226 Difference]: Without dead ends: 357 [2018-11-28 13:24:40,943 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 313 SyntacticMatches, 25 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-28 13:24:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-11-28 13:24:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2018-11-28 13:24:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-11-28 13:24:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 363 transitions. [2018-11-28 13:24:40,948 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 363 transitions. Word has length 338 [2018-11-28 13:24:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:40,949 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 363 transitions. [2018-11-28 13:24:40,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-28 13:24:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 363 transitions. [2018-11-28 13:24:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-11-28 13:24:40,950 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:40,950 INFO L402 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:40,951 INFO L423 AbstractCegarLoop]: === Iteration 37 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:40,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1790578249, now seen corresponding path program 27 times [2018-11-28 13:24:40,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:40,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:40,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-28 13:24:41,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:41,610 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:41,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 13:24:41,668 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-11-28 13:24:41,669 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:41,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:42,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-28 13:24:42,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:42,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-11-28 13:24:42,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-28 13:24:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-28 13:24:42,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-28 13:24:42,238 INFO L87 Difference]: Start difference. First operand 354 states and 363 transitions. Second operand 56 states. [2018-11-28 13:24:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:42,405 INFO L93 Difference]: Finished difference Result 379 states and 391 transitions. [2018-11-28 13:24:42,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-28 13:24:42,405 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 330 [2018-11-28 13:24:42,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:42,407 INFO L225 Difference]: With dead ends: 379 [2018-11-28 13:24:42,407 INFO L226 Difference]: Without dead ends: 331 [2018-11-28 13:24:42,408 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 304 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-28 13:24:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-11-28 13:24:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2018-11-28 13:24:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-28 13:24:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 335 transitions. [2018-11-28 13:24:42,413 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 335 transitions. Word has length 330 [2018-11-28 13:24:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:42,413 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 335 transitions. [2018-11-28 13:24:42,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-28 13:24:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 335 transitions. [2018-11-28 13:24:42,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-28 13:24:42,415 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:42,416 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:42,416 INFO L423 AbstractCegarLoop]: === Iteration 38 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:42,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:42,416 INFO L82 PathProgramCache]: Analyzing trace with hash -359461409, now seen corresponding path program 28 times [2018-11-28 13:24:42,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:42,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:42,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:42,417 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:42,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:43,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:43,101 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:43,107 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 13:24:43,140 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 13:24:43,141 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:43,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:43,689 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:43,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-11-28 13:24:43,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-28 13:24:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-28 13:24:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-28 13:24:43,690 INFO L87 Difference]: Start difference. First operand 329 states and 335 transitions. Second operand 58 states. [2018-11-28 13:24:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:43,838 INFO L93 Difference]: Finished difference Result 346 states and 353 transitions. [2018-11-28 13:24:43,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-28 13:24:43,838 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 352 [2018-11-28 13:24:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:43,839 INFO L225 Difference]: With dead ends: 346 [2018-11-28 13:24:43,839 INFO L226 Difference]: Without dead ends: 298 [2018-11-28 13:24:43,839 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 325 SyntacticMatches, 27 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-28 13:24:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-11-28 13:24:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-11-28 13:24:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-11-28 13:24:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2018-11-28 13:24:43,844 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 352 [2018-11-28 13:24:43,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:43,844 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2018-11-28 13:24:43,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-28 13:24:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2018-11-28 13:24:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-28 13:24:43,846 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:43,846 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:43,846 INFO L423 AbstractCegarLoop]: === Iteration 39 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:43,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash 199336841, now seen corresponding path program 29 times [2018-11-28 13:24:43,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:43,847 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:43,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:43,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:43,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-28 13:24:44,576 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:44,576 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:44,582 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 13:24:44,643 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-28 13:24:44,643 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:44,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-28 13:24:45,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:45,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-11-28 13:24:45,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-11-28 13:24:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-11-28 13:24:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-28 13:24:45,254 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand 60 states. [2018-11-28 13:24:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:45,389 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-11-28 13:24:45,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-28 13:24:45,389 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 354 [2018-11-28 13:24:45,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:45,390 INFO L225 Difference]: With dead ends: 306 [2018-11-28 13:24:45,390 INFO L226 Difference]: Without dead ends: 258 [2018-11-28 13:24:45,390 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 326 SyntacticMatches, 28 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-28 13:24:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-11-28 13:24:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-11-28 13:24:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-11-28 13:24:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-11-28 13:24:45,395 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 354 [2018-11-28 13:24:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:45,395 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-11-28 13:24:45,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-11-28 13:24:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-11-28 13:24:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-28 13:24:45,397 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 13:24:45,397 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:45,397 INFO L423 AbstractCegarLoop]: === Iteration 40 === [hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 13:24:45,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:45,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1936044257, now seen corresponding path program 30 times [2018-11-28 13:24:45,398 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:45,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:45,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 13:24:45,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:46,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:46,223 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/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 [2018-11-28 13:24:46,230 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 13:24:46,323 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-28 13:24:46,323 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 13:24:46,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:47,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-28 13:24:47,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:47,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-11-28 13:24:47,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-28 13:24:47,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-28 13:24:47,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-28 13:24:47,287 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 62 states. [2018-11-28 13:24:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:47,503 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-11-28 13:24:47,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-28 13:24:47,503 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 366 [2018-11-28 13:24:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 13:24:47,504 INFO L225 Difference]: With dead ends: 258 [2018-11-28 13:24:47,504 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 13:24:47,505 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 337 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-28 13:24:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 13:24:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 13:24:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 13:24:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:24:47,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2018-11-28 13:24:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 13:24:47,506 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:24:47,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-28 13:24:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:24:47,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 13:24:47,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 13:24:47,617 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,617 INFO L444 ceAbstractionStarter]: At program point L22-2(line 22) 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)))))) [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point L22-4(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,617 INFO L448 ceAbstractionStarter]: For program point L22-5(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point L22-6(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point L22-7(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L451 ceAbstractionStarter]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 13:24:47,618 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 13:24:47,619 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point L32(lines 32 36) no Hoare annotation was computed. [2018-11-28 13:24:47,619 INFO L444 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~n~0 31) (<= 1 main_~n~0)) [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2018-11-28 13:24:47,619 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2018-11-28 13:24:47,619 INFO L448 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-28 13:24:47,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 01:24:47 BoogieIcfgContainer [2018-11-28 13:24:47,622 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 13:24:47,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:24:47,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:24:47,622 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:24:47,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:24:20" (3/4) ... [2018-11-28 13:24:47,626 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 13:24:47,631 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 13:24:47,631 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-11-28 13:24:47,632 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 13:24:47,635 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-28 13:24:47,635 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 13:24:47,635 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 13:24:47,662 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_12bb6d3d-9ec4-4652-afa5-daeb4a8ee209/bin-2019/uautomizer/witness.graphml [2018-11-28 13:24:47,662 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:24:47,663 INFO L168 Benchmark]: Toolchain (without parser) took 27884.76 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 633.3 MB). Free memory was 952.2 MB in the beginning and 1.2 GB in the end (delta: -250.6 MB). Peak memory consumption was 382.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:47,664 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:24:47,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.06 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:47,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.75 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:24:47,664 INFO L168 Benchmark]: Boogie Preprocessor took 14.34 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:24:47,664 INFO L168 Benchmark]: RCFGBuilder took 168.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 941.3 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:47,665 INFO L168 Benchmark]: TraceAbstraction took 27506.86 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 505.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -90.2 MB). Peak memory consumption was 415.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:47,665 INFO L168 Benchmark]: Witness Printer took 40.02 ms. Allocated memory is still 1.7 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.2 kB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. [2018-11-28 13:24:47,667 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.06 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.75 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.34 ms. Allocated memory is still 1.0 GB. Free memory is still 941.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 168.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 941.3 MB in the beginning and 1.1 GB in the end (delta: -171.4 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27506.86 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 505.9 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -90.2 MB). Peak memory consumption was 415.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.02 ms. Allocated memory is still 1.7 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 8.2 kB). Peak memory consumption was 8.2 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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, 27.4s OverallTime, 40 OverallIterations, 32 TraceHistogramMax, 4.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 1107 SDtfs, 2516 SDslu, 13198 SDs, 0 SdLazy, 6359 SolverSat, 286 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7856 GetRequests, 6271 SyntacticMatches, 438 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23754 ImplicationChecksByTransitivity, 17.8s 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 13422 NumberOfCodeBlocks, 13292 NumberOfCodeBlocksAsserted, 386 NumberOfCheckSat, 13346 ConstructedInterpolants, 0 QuantifiedInterpolants, 7284294 SizeOfPredicates, 60 NumberOfNonLiveVariables, 11350 ConjunctsInSsa, 1092 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 72091/134780 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...