./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 0.1.23-5842f4b [2018-11-18 12:14:53,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:14:53,857 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:14:53,866 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:14:53,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:14:53,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:14:53,867 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:14:53,869 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:14:53,870 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:14:53,870 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:14:53,871 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:14:53,871 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:14:53,872 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:14:53,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:14:53,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:14:53,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:14:53,874 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:14:53,875 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:14:53,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:14:53,878 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:14:53,879 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:14:53,879 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:14:53,881 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:14:53,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:14:53,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:14:53,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:14:53,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:14:53,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:14:53,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:14:53,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:14:53,885 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:14:53,885 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:14:53,885 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:14:53,886 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:14:53,886 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:14:53,887 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:14:53,887 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2018-11-18 12:14:53,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:14:53,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:14:53,897 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:14:53,898 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:14:53,898 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:14:53,898 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:14:53,898 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:14:53,898 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:14:53,899 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:14:53,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:14:53,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:14:53,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:14:53,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:14:53,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:14:53,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:14:53,901 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:14:53,901 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:14:53,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:14:53,901 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_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:53,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:14:53,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:14:53,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:14:53,937 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:14:53,937 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:14:53,938 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 12:14:53,983 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/data/92c73c0ac/41f0e5c525554c8fb1a53df0005cd02d/FLAG0933d28c5 [2018-11-18 12:14:54,376 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:14:54,377 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/sv-benchmarks/c/recursive/recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 12:14:54,380 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/data/92c73c0ac/41f0e5c525554c8fb1a53df0005cd02d/FLAG0933d28c5 [2018-11-18 12:14:54,389 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/data/92c73c0ac/41f0e5c525554c8fb1a53df0005cd02d [2018-11-18 12:14:54,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:14:54,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:14:54,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:14:54,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:14:54,396 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:14:54,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e32060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54, skipping insertion in model container [2018-11-18 12:14:54,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:14:54,418 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:14:54,521 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:14:54,523 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:14:54,532 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:14:54,539 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:14:54,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54 WrapperNode [2018-11-18 12:14:54,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:14:54,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:14:54,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:14:54,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:14:54,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... [2018-11-18 12:14:54,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:14:54,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:14:54,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:14:54,558 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:14:54,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:14:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:14:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2018-11-18 12:14:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:14:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:14:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 12:14:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2018-11-18 12:14:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:14:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:14:54,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:14:54,732 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:14:54,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:54 BoogieIcfgContainer [2018-11-18 12:14:54,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:14:54,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:14:54,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:14:54,736 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:14:54,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:14:54" (1/3) ... [2018-11-18 12:14:54,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61af0382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:14:54, skipping insertion in model container [2018-11-18 12:14:54,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:14:54" (2/3) ... [2018-11-18 12:14:54,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61af0382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:14:54, skipping insertion in model container [2018-11-18 12:14:54,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:54" (3/3) ... [2018-11-18 12:14:54,739 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi02_true-unreach-call_true-no-overflow_true-termination.c [2018-11-18 12:14:54,747 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:14:54,752 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 12:14:54,762 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 12:14:54,782 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:14:54,782 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:14:54,783 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:14:54,783 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:14:54,783 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:14:54,783 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:14:54,783 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:14:54,783 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:14:54,783 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:14:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-18 12:14:54,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:14:54,800 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:54,801 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:54,802 INFO L423 AbstractCegarLoop]: === Iteration 1 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:54,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:54,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1002909108, now seen corresponding path program 1 times [2018-11-18 12:14:54,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:54,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:54,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:54,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:54,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:54,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:54,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:54,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:14:54,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:14:54,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:14:54,945 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-11-18 12:14:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,017 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-18 12:14:55,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:14:55,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-18 12:14:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,024 INFO L225 Difference]: With dead ends: 38 [2018-11-18 12:14:55,024 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 12:14:55,026 INFO L604 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 [2018-11-18 12:14:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 12:14:55,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 12:14:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 12:14:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-11-18 12:14:55,050 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 10 [2018-11-18 12:14:55,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,050 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-11-18 12:14:55,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:14:55,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-11-18 12:14:55,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 12:14:55,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,051 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,051 INFO L423 AbstractCegarLoop]: === Iteration 2 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1025411315, now seen corresponding path program 1 times [2018-11-18 12:14:55,052 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:55,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:55,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 12:14:55,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:14:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:14:55,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:14:55,100 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-11-18 12:14:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,162 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-11-18 12:14:55,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:14:55,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 12:14:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,165 INFO L225 Difference]: With dead ends: 43 [2018-11-18 12:14:55,165 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 12:14:55,166 INFO L604 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 [2018-11-18 12:14:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 12:14:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2018-11-18 12:14:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 12:14:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-18 12:14:55,175 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 11 [2018-11-18 12:14:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,175 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-18 12:14:55,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:14:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-18 12:14:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 12:14:55,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,176 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,177 INFO L423 AbstractCegarLoop]: === Iteration 3 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,177 INFO L82 PathProgramCache]: Analyzing trace with hash -80939849, now seen corresponding path program 1 times [2018-11-18 12:14:55,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:55,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:55,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:55,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:55,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 12:14:55,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:14:55,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:14:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:14:55,304 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-11-18 12:14:55,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,363 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2018-11-18 12:14:55,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 12:14:55,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-18 12:14:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,365 INFO L225 Difference]: With dead ends: 59 [2018-11-18 12:14:55,365 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 12:14:55,365 INFO L604 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 [2018-11-18 12:14:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 12:14:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2018-11-18 12:14:55,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-18 12:14:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2018-11-18 12:14:55,370 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 16 [2018-11-18 12:14:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,370 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2018-11-18 12:14:55,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:14:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2018-11-18 12:14:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 12:14:55,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,371 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,371 INFO L423 AbstractCegarLoop]: === Iteration 4 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash -474289655, now seen corresponding path program 1 times [2018-11-18 12:14:55,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:55,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 12:14:55,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:55,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:14:55,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:55,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:55,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:55,411 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 4 states. [2018-11-18 12:14:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,430 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2018-11-18 12:14:55,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:55,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-18 12:14:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,432 INFO L225 Difference]: With dead ends: 67 [2018-11-18 12:14:55,432 INFO L226 Difference]: Without dead ends: 65 [2018-11-18 12:14:55,433 INFO L604 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 [2018-11-18 12:14:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-18 12:14:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-11-18 12:14:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 12:14:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2018-11-18 12:14:55,441 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 18 [2018-11-18 12:14:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,441 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2018-11-18 12:14:55,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2018-11-18 12:14:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 12:14:55,442 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,442 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,442 INFO L423 AbstractCegarLoop]: === Iteration 5 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1818077372, now seen corresponding path program 1 times [2018-11-18 12:14:55,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:55,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 12:14:55,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:14:55,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:14:55,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 12:14:55,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 12:14:55,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 12:14:55,476 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 4 states. [2018-11-18 12:14:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,492 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-18 12:14:55,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 12:14:55,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-18 12:14:55,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,493 INFO L225 Difference]: With dead ends: 62 [2018-11-18 12:14:55,493 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 12:14:55,493 INFO L604 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 [2018-11-18 12:14:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 12:14:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-18 12:14:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 12:14:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-11-18 12:14:55,500 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 19 [2018-11-18 12:14:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,500 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-11-18 12:14:55,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 12:14:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-11-18 12:14:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:14:55,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,501 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,501 INFO L423 AbstractCegarLoop]: === Iteration 6 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1159773325, now seen corresponding path program 2 times [2018-11-18 12:14:55,502 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:55,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:55,556 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:55,562 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:14:55,568 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:14:55,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:55,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:55,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 12:14:55,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 12:14:55,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 12:14:55,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 12:14:55,592 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 9 states. [2018-11-18 12:14:55,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,682 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2018-11-18 12:14:55,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 12:14:55,682 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-18 12:14:55,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,683 INFO L225 Difference]: With dead ends: 78 [2018-11-18 12:14:55,683 INFO L226 Difference]: Without dead ends: 77 [2018-11-18 12:14:55,684 INFO L604 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 [2018-11-18 12:14:55,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-18 12:14:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2018-11-18 12:14:55,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-18 12:14:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2018-11-18 12:14:55,691 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 21 [2018-11-18 12:14:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,692 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2018-11-18 12:14:55,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 12:14:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2018-11-18 12:14:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 12:14:55,693 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,693 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,693 INFO L423 AbstractCegarLoop]: === Iteration 7 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1430047287, now seen corresponding path program 3 times [2018-11-18 12:14:55,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,695 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:55,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:55,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:55,811 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:14:55,818 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 12:14:55,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:55,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:55,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:55,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 12:14:55,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 12:14:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 12:14:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:14:55,847 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand 11 states. [2018-11-18 12:14:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:55,951 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-11-18 12:14:55,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 12:14:55,952 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-18 12:14:55,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:55,953 INFO L225 Difference]: With dead ends: 98 [2018-11-18 12:14:55,953 INFO L226 Difference]: Without dead ends: 97 [2018-11-18 12:14:55,954 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2018-11-18 12:14:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-18 12:14:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2018-11-18 12:14:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-18 12:14:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2018-11-18 12:14:55,961 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 26 [2018-11-18 12:14:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:55,962 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2018-11-18 12:14:55,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 12:14:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2018-11-18 12:14:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 12:14:55,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:55,964 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:55,964 INFO L423 AbstractCegarLoop]: === Iteration 8 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:55,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1529291277, now seen corresponding path program 4 times [2018-11-18 12:14:55,964 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:55,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:55,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:55,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:56,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:56,072 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:56,083 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:14:56,090 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:14:56,090 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:56,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:56,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:56,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-18 12:14:56,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 12:14:56,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 12:14:56,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:14:56,117 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand 13 states. [2018-11-18 12:14:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:56,231 INFO L93 Difference]: Finished difference Result 118 states and 123 transitions. [2018-11-18 12:14:56,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-18 12:14:56,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-18 12:14:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:56,233 INFO L225 Difference]: With dead ends: 118 [2018-11-18 12:14:56,233 INFO L226 Difference]: Without dead ends: 117 [2018-11-18 12:14:56,233 INFO L604 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 [2018-11-18 12:14:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-18 12:14:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2018-11-18 12:14:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-18 12:14:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2018-11-18 12:14:56,240 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 31 [2018-11-18 12:14:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:56,241 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2018-11-18 12:14:56,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 12:14:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2018-11-18 12:14:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 12:14:56,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:56,243 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:56,244 INFO L423 AbstractCegarLoop]: === Iteration 9 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:56,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:56,244 INFO L82 PathProgramCache]: Analyzing trace with hash -10526561, now seen corresponding path program 1 times [2018-11-18 12:14:56,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:56,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:56,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:56,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 12:14:56,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:56,286 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:56,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:56,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 12:14:56,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:56,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 12:14:56,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 12:14:56,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 12:14:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:14:56,357 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 6 states. [2018-11-18 12:14:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:56,375 INFO L93 Difference]: Finished difference Result 153 states and 178 transitions. [2018-11-18 12:14:56,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:14:56,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-11-18 12:14:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:56,376 INFO L225 Difference]: With dead ends: 153 [2018-11-18 12:14:56,376 INFO L226 Difference]: Without dead ends: 138 [2018-11-18 12:14:56,377 INFO L604 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 [2018-11-18 12:14:56,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-18 12:14:56,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2018-11-18 12:14:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-11-18 12:14:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2018-11-18 12:14:56,383 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 30 [2018-11-18 12:14:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:56,384 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2018-11-18 12:14:56,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 12:14:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2018-11-18 12:14:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 12:14:56,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:56,385 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:56,385 INFO L423 AbstractCegarLoop]: === Iteration 10 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:56,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:56,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1671413687, now seen corresponding path program 5 times [2018-11-18 12:14:56,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:56,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:56,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:56,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:56,524 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:56,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:56,525 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:56,538 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:14:56,550 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 12:14:56,551 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:56,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:56,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:56,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-18 12:14:56,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 12:14:56,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 12:14:56,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:14:56,588 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand 15 states. [2018-11-18 12:14:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:56,718 INFO L93 Difference]: Finished difference Result 171 states and 177 transitions. [2018-11-18 12:14:56,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 12:14:56,718 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-11-18 12:14:56,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:56,720 INFO L225 Difference]: With dead ends: 171 [2018-11-18 12:14:56,720 INFO L226 Difference]: Without dead ends: 170 [2018-11-18 12:14:56,720 INFO L604 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 [2018-11-18 12:14:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-11-18 12:14:56,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 158. [2018-11-18 12:14:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-11-18 12:14:56,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 176 transitions. [2018-11-18 12:14:56,726 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 176 transitions. Word has length 36 [2018-11-18 12:14:56,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:56,726 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 176 transitions. [2018-11-18 12:14:56,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 12:14:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 176 transitions. [2018-11-18 12:14:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-18 12:14:56,727 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:56,727 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:56,727 INFO L423 AbstractCegarLoop]: === Iteration 11 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:56,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:56,727 INFO L82 PathProgramCache]: Analyzing trace with hash 829642867, now seen corresponding path program 6 times [2018-11-18 12:14:56,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:56,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:56,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:56,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:14:56,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:56,839 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:56,850 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:14:56,889 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 12:14:56,889 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:56,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 12:14:56,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:56,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 17 [2018-11-18 12:14:56,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 12:14:56,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 12:14:56,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-11-18 12:14:56,944 INFO L87 Difference]: Start difference. First operand 158 states and 176 transitions. Second operand 18 states. [2018-11-18 12:14:56,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:56,970 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2018-11-18 12:14:56,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 12:14:56,971 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2018-11-18 12:14:56,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:56,971 INFO L225 Difference]: With dead ends: 158 [2018-11-18 12:14:56,972 INFO L226 Difference]: Without dead ends: 157 [2018-11-18 12:14:56,972 INFO L604 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 [2018-11-18 12:14:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-11-18 12:14:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-11-18 12:14:56,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-18 12:14:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2018-11-18 12:14:56,978 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 175 transitions. Word has length 41 [2018-11-18 12:14:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:56,979 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 175 transitions. [2018-11-18 12:14:56,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 12:14:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 175 transitions. [2018-11-18 12:14:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 12:14:56,982 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:56,982 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:56,982 INFO L423 AbstractCegarLoop]: === Iteration 12 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:56,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1233481545, now seen corresponding path program 2 times [2018-11-18 12:14:56,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:56,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:56,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:56,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 12:14:57,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:57,017 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:57,024 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:14:57,030 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:14:57,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:57,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:57,049 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 12:14:57,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:57,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 12:14:57,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 12:14:57,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 12:14:57,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 12:14:57,065 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. Second operand 8 states. [2018-11-18 12:14:57,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:57,102 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2018-11-18 12:14:57,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:14:57,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-11-18 12:14:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:57,104 INFO L225 Difference]: With dead ends: 211 [2018-11-18 12:14:57,104 INFO L226 Difference]: Without dead ends: 189 [2018-11-18 12:14:57,104 INFO L604 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 [2018-11-18 12:14:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-11-18 12:14:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2018-11-18 12:14:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-11-18 12:14:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 201 transitions. [2018-11-18 12:14:57,112 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 201 transitions. Word has length 42 [2018-11-18 12:14:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:57,113 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 201 transitions. [2018-11-18 12:14:57,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 12:14:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 201 transitions. [2018-11-18 12:14:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 12:14:57,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:57,114 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:57,114 INFO L423 AbstractCegarLoop]: === Iteration 13 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:57,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:57,114 INFO L82 PathProgramCache]: Analyzing trace with hash -677419169, now seen corresponding path program 3 times [2018-11-18 12:14:57,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:57,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:57,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:57,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:57,174 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-18 12:14:57,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:57,175 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:57,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:14:57,198 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 12:14:57,198 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:57,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-18 12:14:57,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:57,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 12:14:57,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 12:14:57,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 12:14:57,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:14:57,275 INFO L87 Difference]: Start difference. First operand 183 states and 201 transitions. Second operand 10 states. [2018-11-18 12:14:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:57,311 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2018-11-18 12:14:57,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 12:14:57,311 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-18 12:14:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:57,312 INFO L225 Difference]: With dead ends: 237 [2018-11-18 12:14:57,312 INFO L226 Difference]: Without dead ends: 208 [2018-11-18 12:14:57,312 INFO L604 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 [2018-11-18 12:14:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-11-18 12:14:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2018-11-18 12:14:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-11-18 12:14:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 220 transitions. [2018-11-18 12:14:57,321 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 220 transitions. Word has length 54 [2018-11-18 12:14:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:57,322 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 220 transitions. [2018-11-18 12:14:57,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 12:14:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 220 transitions. [2018-11-18 12:14:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 12:14:57,324 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:57,324 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:57,325 INFO L423 AbstractCegarLoop]: === Iteration 14 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:57,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1491778423, now seen corresponding path program 4 times [2018-11-18 12:14:57,325 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:57,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:57,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,326 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:57,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-18 12:14:57,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:57,401 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:57,408 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:14:57,418 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:14:57,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:57,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-11-18 12:14:57,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:57,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 12:14:57,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 12:14:57,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 12:14:57,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-18 12:14:57,478 INFO L87 Difference]: Start difference. First operand 202 states and 220 transitions. Second operand 12 states. [2018-11-18 12:14:57,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:57,525 INFO L93 Difference]: Finished difference Result 256 states and 286 transitions. [2018-11-18 12:14:57,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:14:57,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2018-11-18 12:14:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:57,526 INFO L225 Difference]: With dead ends: 256 [2018-11-18 12:14:57,526 INFO L226 Difference]: Without dead ends: 220 [2018-11-18 12:14:57,527 INFO L604 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 [2018-11-18 12:14:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-11-18 12:14:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 214. [2018-11-18 12:14:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-11-18 12:14:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 232 transitions. [2018-11-18 12:14:57,534 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 232 transitions. Word has length 66 [2018-11-18 12:14:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:57,535 INFO L480 AbstractCegarLoop]: Abstraction has 214 states and 232 transitions. [2018-11-18 12:14:57,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 12:14:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 232 transitions. [2018-11-18 12:14:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-18 12:14:57,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:57,536 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:57,536 INFO L423 AbstractCegarLoop]: === Iteration 15 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:57,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:57,536 INFO L82 PathProgramCache]: Analyzing trace with hash 501489183, now seen corresponding path program 5 times [2018-11-18 12:14:57,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:57,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:57,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,537 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:57,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-18 12:14:57,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:57,627 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:57,635 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:14:57,646 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-18 12:14:57,646 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:57,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-18 12:14:57,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:57,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-18 12:14:57,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 12:14:57,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 12:14:57,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-18 12:14:57,717 INFO L87 Difference]: Start difference. First operand 214 states and 232 transitions. Second operand 14 states. [2018-11-18 12:14:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:57,760 INFO L93 Difference]: Finished difference Result 268 states and 298 transitions. [2018-11-18 12:14:57,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 12:14:57,760 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 78 [2018-11-18 12:14:57,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:57,761 INFO L225 Difference]: With dead ends: 268 [2018-11-18 12:14:57,762 INFO L226 Difference]: Without dead ends: 227 [2018-11-18 12:14:57,762 INFO L604 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 [2018-11-18 12:14:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-11-18 12:14:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 221. [2018-11-18 12:14:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-11-18 12:14:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2018-11-18 12:14:57,768 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 78 [2018-11-18 12:14:57,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:57,769 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2018-11-18 12:14:57,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 12:14:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2018-11-18 12:14:57,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-18 12:14:57,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:57,770 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:57,771 INFO L423 AbstractCegarLoop]: === Iteration 16 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:57,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:57,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1033999927, now seen corresponding path program 6 times [2018-11-18 12:14:57,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:57,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:57,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:57,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:57,881 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-18 12:14:57,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:57,881 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:57,895 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:14:57,914 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-18 12:14:57,914 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:57,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-11-18 12:14:58,021 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:58,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-18 12:14:58,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 12:14:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 12:14:58,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-18 12:14:58,022 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand 16 states. [2018-11-18 12:14:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:58,078 INFO L93 Difference]: Finished difference Result 275 states and 305 transitions. [2018-11-18 12:14:58,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 12:14:58,079 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2018-11-18 12:14:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:58,080 INFO L225 Difference]: With dead ends: 275 [2018-11-18 12:14:58,080 INFO L226 Difference]: Without dead ends: 234 [2018-11-18 12:14:58,080 INFO L604 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 [2018-11-18 12:14:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-11-18 12:14:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2018-11-18 12:14:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-11-18 12:14:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 246 transitions. [2018-11-18 12:14:58,087 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 246 transitions. Word has length 90 [2018-11-18 12:14:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:58,087 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 246 transitions. [2018-11-18 12:14:58,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 12:14:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 246 transitions. [2018-11-18 12:14:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-18 12:14:58,088 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:58,088 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:58,088 INFO L423 AbstractCegarLoop]: === Iteration 17 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:58,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:58,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1169786079, now seen corresponding path program 7 times [2018-11-18 12:14:58,089 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:58,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:58,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:58,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:58,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-18 12:14:58,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:58,200 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:58,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:58,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-18 12:14:58,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:58,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-18 12:14:58,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 12:14:58,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 12:14:58,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-18 12:14:58,310 INFO L87 Difference]: Start difference. First operand 228 states and 246 transitions. Second operand 18 states. [2018-11-18 12:14:58,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:58,369 INFO L93 Difference]: Finished difference Result 282 states and 312 transitions. [2018-11-18 12:14:58,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 12:14:58,369 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2018-11-18 12:14:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:58,371 INFO L225 Difference]: With dead ends: 282 [2018-11-18 12:14:58,371 INFO L226 Difference]: Without dead ends: 241 [2018-11-18 12:14:58,371 INFO L604 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 [2018-11-18 12:14:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-11-18 12:14:58,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2018-11-18 12:14:58,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-11-18 12:14:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2018-11-18 12:14:58,379 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 102 [2018-11-18 12:14:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:58,379 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2018-11-18 12:14:58,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 12:14:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2018-11-18 12:14:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-18 12:14:58,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:58,381 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:58,381 INFO L423 AbstractCegarLoop]: === Iteration 18 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:58,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash 117714501, now seen corresponding path program 8 times [2018-11-18 12:14:58,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:58,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:58,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:58,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:14:58,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-11-18 12:14:58,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:58,529 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:58,535 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:14:58,561 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:14:58,561 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:58,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2018-11-18 12:14:58,681 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:58,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-18 12:14:58,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 12:14:58,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 12:14:58,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-18 12:14:58,681 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand 20 states. [2018-11-18 12:14:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:58,772 INFO L93 Difference]: Finished difference Result 289 states and 319 transitions. [2018-11-18 12:14:58,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 12:14:58,773 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2018-11-18 12:14:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:58,774 INFO L225 Difference]: With dead ends: 289 [2018-11-18 12:14:58,774 INFO L226 Difference]: Without dead ends: 248 [2018-11-18 12:14:58,775 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 141 SyntacticMatches, 8 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-18 12:14:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-11-18 12:14:58,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2018-11-18 12:14:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2018-11-18 12:14:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 260 transitions. [2018-11-18 12:14:58,783 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 260 transitions. Word has length 149 [2018-11-18 12:14:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:58,783 INFO L480 AbstractCegarLoop]: Abstraction has 242 states and 260 transitions. [2018-11-18 12:14:58,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 12:14:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 260 transitions. [2018-11-18 12:14:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-18 12:14:58,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:58,785 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:58,786 INFO L423 AbstractCegarLoop]: === Iteration 19 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:58,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:58,786 INFO L82 PathProgramCache]: Analyzing trace with hash 497785759, now seen corresponding path program 9 times [2018-11-18 12:14:58,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:58,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:58,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:58,787 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:58,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-11-18 12:14:58,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:58,954 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:58,963 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:14:58,989 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-18 12:14:58,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:58,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-11-18 12:14:59,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:59,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-18 12:14:59,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 12:14:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 12:14:59,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-18 12:14:59,123 INFO L87 Difference]: Start difference. First operand 242 states and 260 transitions. Second operand 22 states. [2018-11-18 12:14:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:59,211 INFO L93 Difference]: Finished difference Result 296 states and 326 transitions. [2018-11-18 12:14:59,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 12:14:59,212 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 126 [2018-11-18 12:14:59,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:59,214 INFO L225 Difference]: With dead ends: 296 [2018-11-18 12:14:59,214 INFO L226 Difference]: Without dead ends: 255 [2018-11-18 12:14:59,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 117 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-18 12:14:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-11-18 12:14:59,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2018-11-18 12:14:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-11-18 12:14:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 267 transitions. [2018-11-18 12:14:59,226 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 267 transitions. Word has length 126 [2018-11-18 12:14:59,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:59,227 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 267 transitions. [2018-11-18 12:14:59,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 12:14:59,227 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 267 transitions. [2018-11-18 12:14:59,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-18 12:14:59,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:59,229 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:59,229 INFO L423 AbstractCegarLoop]: === Iteration 20 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:59,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:59,232 INFO L82 PathProgramCache]: Analyzing trace with hash -911147131, now seen corresponding path program 10 times [2018-11-18 12:14:59,232 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:59,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:59,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:59,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:59,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:14:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-11-18 12:14:59,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:14:59,579 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:14:59,588 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:14:59,634 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:14:59,635 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:14:59,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:14:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2018-11-18 12:14:59,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:14:59,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-18 12:14:59,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 12:14:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 12:14:59,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-18 12:14:59,821 INFO L87 Difference]: Start difference. First operand 249 states and 267 transitions. Second operand 24 states. [2018-11-18 12:14:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:14:59,923 INFO L93 Difference]: Finished difference Result 303 states and 333 transitions. [2018-11-18 12:14:59,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 12:14:59,924 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 173 [2018-11-18 12:14:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:14:59,925 INFO L225 Difference]: With dead ends: 303 [2018-11-18 12:14:59,925 INFO L226 Difference]: Without dead ends: 262 [2018-11-18 12:14:59,926 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-18 12:14:59,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-11-18 12:14:59,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2018-11-18 12:14:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-11-18 12:14:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 274 transitions. [2018-11-18 12:14:59,934 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 274 transitions. Word has length 173 [2018-11-18 12:14:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:14:59,935 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 274 transitions. [2018-11-18 12:14:59,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 12:14:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 274 transitions. [2018-11-18 12:14:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-18 12:14:59,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:14:59,937 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:14:59,937 INFO L423 AbstractCegarLoop]: === Iteration 21 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:14:59,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:14:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash 705676187, now seen corresponding path program 11 times [2018-11-18 12:14:59,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:14:59,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:14:59,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:59,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:14:59,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:14:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-11-18 12:15:00,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:00,171 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:00,177 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:15:00,206 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2018-11-18 12:15:00,207 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:00,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1322 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2018-11-18 12:15:00,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:00,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-18 12:15:00,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 12:15:00,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 12:15:00,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-18 12:15:00,379 INFO L87 Difference]: Start difference. First operand 256 states and 274 transitions. Second operand 26 states. [2018-11-18 12:15:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:00,458 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2018-11-18 12:15:00,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-18 12:15:00,459 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 185 [2018-11-18 12:15:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:00,460 INFO L225 Difference]: With dead ends: 310 [2018-11-18 12:15:00,460 INFO L226 Difference]: Without dead ends: 269 [2018-11-18 12:15:00,461 INFO L604 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 [2018-11-18 12:15:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-11-18 12:15:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2018-11-18 12:15:00,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-11-18 12:15:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 281 transitions. [2018-11-18 12:15:00,467 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 281 transitions. Word has length 185 [2018-11-18 12:15:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:00,467 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 281 transitions. [2018-11-18 12:15:00,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 12:15:00,467 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 281 transitions. [2018-11-18 12:15:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-18 12:15:00,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:00,469 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:00,469 INFO L423 AbstractCegarLoop]: === Iteration 22 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:00,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash 219789705, now seen corresponding path program 12 times [2018-11-18 12:15:00,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:00,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:00,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:00,470 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:00,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-11-18 12:15:00,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:00,687 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:00,693 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:15:00,716 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2018-11-18 12:15:00,716 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:00,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 416 trivial. 0 not checked. [2018-11-18 12:15:00,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:00,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-18 12:15:00,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-18 12:15:00,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-18 12:15:00,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-11-18 12:15:00,900 INFO L87 Difference]: Start difference. First operand 263 states and 281 transitions. Second operand 28 states. [2018-11-18 12:15:00,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:00,969 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2018-11-18 12:15:00,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-18 12:15:00,970 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 162 [2018-11-18 12:15:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:00,971 INFO L225 Difference]: With dead ends: 317 [2018-11-18 12:15:00,971 INFO L226 Difference]: Without dead ends: 276 [2018-11-18 12:15:00,971 INFO L604 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 [2018-11-18 12:15:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2018-11-18 12:15:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2018-11-18 12:15:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-11-18 12:15:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 288 transitions. [2018-11-18 12:15:00,978 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 288 transitions. Word has length 162 [2018-11-18 12:15:00,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:00,978 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 288 transitions. [2018-11-18 12:15:00,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-18 12:15:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 288 transitions. [2018-11-18 12:15:00,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-18 12:15:00,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:00,980 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:00,980 INFO L423 AbstractCegarLoop]: === Iteration 23 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:00,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:00,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1595267359, now seen corresponding path program 13 times [2018-11-18 12:15:00,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:00,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:00,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:00,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:00,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-11-18 12:15:01,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:01,219 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:01,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:01,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 598 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2018-11-18 12:15:01,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:01,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-18 12:15:01,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-18 12:15:01,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-18 12:15:01,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-11-18 12:15:01,490 INFO L87 Difference]: Start difference. First operand 270 states and 288 transitions. Second operand 30 states. [2018-11-18 12:15:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:01,573 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2018-11-18 12:15:01,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-18 12:15:01,573 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 174 [2018-11-18 12:15:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:01,574 INFO L225 Difference]: With dead ends: 324 [2018-11-18 12:15:01,574 INFO L226 Difference]: Without dead ends: 283 [2018-11-18 12:15:01,575 INFO L604 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 [2018-11-18 12:15:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-11-18 12:15:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2018-11-18 12:15:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-11-18 12:15:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 295 transitions. [2018-11-18 12:15:01,580 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 295 transitions. Word has length 174 [2018-11-18 12:15:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:01,580 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 295 transitions. [2018-11-18 12:15:01,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-18 12:15:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 295 transitions. [2018-11-18 12:15:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-18 12:15:01,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:01,582 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:01,582 INFO L423 AbstractCegarLoop]: === Iteration 24 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:01,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:01,582 INFO L82 PathProgramCache]: Analyzing trace with hash -611151355, now seen corresponding path program 14 times [2018-11-18 12:15:01,583 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:01,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:01,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:01,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:01,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-11-18 12:15:01,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:01,846 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:01,854 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:15:01,880 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:15:01,880 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:01,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 1199 trivial. 0 not checked. [2018-11-18 12:15:02,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:02,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-18 12:15:02,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-18 12:15:02,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-18 12:15:02,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-18 12:15:02,109 INFO L87 Difference]: Start difference. First operand 277 states and 295 transitions. Second operand 32 states. [2018-11-18 12:15:02,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:02,177 INFO L93 Difference]: Finished difference Result 331 states and 361 transitions. [2018-11-18 12:15:02,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-18 12:15:02,178 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 221 [2018-11-18 12:15:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:02,179 INFO L225 Difference]: With dead ends: 331 [2018-11-18 12:15:02,179 INFO L226 Difference]: Without dead ends: 290 [2018-11-18 12:15:02,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 207 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-18 12:15:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-18 12:15:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 284. [2018-11-18 12:15:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-11-18 12:15:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 302 transitions. [2018-11-18 12:15:02,184 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 302 transitions. Word has length 221 [2018-11-18 12:15:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:02,185 INFO L480 AbstractCegarLoop]: Abstraction has 284 states and 302 transitions. [2018-11-18 12:15:02,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-18 12:15:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 302 transitions. [2018-11-18 12:15:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-18 12:15:02,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:02,186 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:02,186 INFO L423 AbstractCegarLoop]: === Iteration 25 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:02,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:02,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2030663963, now seen corresponding path program 15 times [2018-11-18 12:15:02,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:02,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:02,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:02,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:02,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-18 12:15:02,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:02,573 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:02,580 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:15:02,609 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-18 12:15:02,609 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:02,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-18 12:15:02,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:02,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-18 12:15:02,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 12:15:02,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 12:15:02,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 12:15:02,893 INFO L87 Difference]: Start difference. First operand 284 states and 302 transitions. Second operand 34 states. [2018-11-18 12:15:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:02,994 INFO L93 Difference]: Finished difference Result 338 states and 368 transitions. [2018-11-18 12:15:02,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 12:15:02,994 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 233 [2018-11-18 12:15:02,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:02,995 INFO L225 Difference]: With dead ends: 338 [2018-11-18 12:15:02,995 INFO L226 Difference]: Without dead ends: 297 [2018-11-18 12:15:02,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 218 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 12:15:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-11-18 12:15:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 291. [2018-11-18 12:15:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-11-18 12:15:03,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 309 transitions. [2018-11-18 12:15:03,003 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 309 transitions. Word has length 233 [2018-11-18 12:15:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:03,003 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 309 transitions. [2018-11-18 12:15:03,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 12:15:03,003 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 309 transitions. [2018-11-18 12:15:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-18 12:15:03,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:03,005 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:03,005 INFO L423 AbstractCegarLoop]: === Iteration 26 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:03,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:03,005 INFO L82 PathProgramCache]: Analyzing trace with hash -687614967, now seen corresponding path program 16 times [2018-11-18 12:15:03,005 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:03,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:03,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:03,006 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:03,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:03,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-18 12:15:03,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:03,334 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:03,340 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:15:03,367 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:15:03,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:03,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1618 backedges. 0 proven. 904 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-11-18 12:15:03,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:03,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-18 12:15:03,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-18 12:15:03,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-18 12:15:03,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 12:15:03,668 INFO L87 Difference]: Start difference. First operand 291 states and 309 transitions. Second operand 36 states. [2018-11-18 12:15:03,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:03,772 INFO L93 Difference]: Finished difference Result 345 states and 375 transitions. [2018-11-18 12:15:03,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-18 12:15:03,772 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 210 [2018-11-18 12:15:03,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:03,774 INFO L225 Difference]: With dead ends: 345 [2018-11-18 12:15:03,774 INFO L226 Difference]: Without dead ends: 304 [2018-11-18 12:15:03,774 INFO L604 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 [2018-11-18 12:15:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-11-18 12:15:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2018-11-18 12:15:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2018-11-18 12:15:03,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 316 transitions. [2018-11-18 12:15:03,781 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 316 transitions. Word has length 210 [2018-11-18 12:15:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:03,782 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 316 transitions. [2018-11-18 12:15:03,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-18 12:15:03,782 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 316 transitions. [2018-11-18 12:15:03,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-18 12:15:03,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:03,783 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:03,783 INFO L423 AbstractCegarLoop]: === Iteration 27 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:03,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash 362634203, now seen corresponding path program 17 times [2018-11-18 12:15:03,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:03,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:03,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:03,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:03,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-18 12:15:04,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:04,128 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:04,135 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:15:04,181 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-11-18 12:15:04,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:04,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2570 backedges. 0 proven. 1020 refuted. 0 times theorem prover too weak. 1550 trivial. 0 not checked. [2018-11-18 12:15:04,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:04,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-18 12:15:04,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-18 12:15:04,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-18 12:15:04,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 12:15:04,459 INFO L87 Difference]: Start difference. First operand 298 states and 316 transitions. Second operand 38 states. [2018-11-18 12:15:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:04,538 INFO L93 Difference]: Finished difference Result 352 states and 382 transitions. [2018-11-18 12:15:04,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-18 12:15:04,539 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 257 [2018-11-18 12:15:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:04,541 INFO L225 Difference]: With dead ends: 352 [2018-11-18 12:15:04,541 INFO L226 Difference]: Without dead ends: 311 [2018-11-18 12:15:04,541 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 240 SyntacticMatches, 17 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 12:15:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-11-18 12:15:04,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2018-11-18 12:15:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-11-18 12:15:04,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 323 transitions. [2018-11-18 12:15:04,549 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 323 transitions. Word has length 257 [2018-11-18 12:15:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:04,549 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 323 transitions. [2018-11-18 12:15:04,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-18 12:15:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 323 transitions. [2018-11-18 12:15:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-18 12:15:04,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:04,551 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:04,551 INFO L423 AbstractCegarLoop]: === Iteration 28 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:04,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:04,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2128176261, now seen corresponding path program 18 times [2018-11-18 12:15:04,551 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:04,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:04,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:04,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:04,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-18 12:15:04,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:04,924 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:04,932 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:15:04,978 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-11-18 12:15:04,978 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:04,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:05,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2820 backedges. 0 proven. 1143 refuted. 0 times theorem prover too weak. 1677 trivial. 0 not checked. [2018-11-18 12:15:05,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:05,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-18 12:15:05,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-18 12:15:05,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-18 12:15:05,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 12:15:05,370 INFO L87 Difference]: Start difference. First operand 305 states and 323 transitions. Second operand 40 states. [2018-11-18 12:15:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:05,481 INFO L93 Difference]: Finished difference Result 359 states and 389 transitions. [2018-11-18 12:15:05,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-18 12:15:05,482 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 269 [2018-11-18 12:15:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:05,483 INFO L225 Difference]: With dead ends: 359 [2018-11-18 12:15:05,483 INFO L226 Difference]: Without dead ends: 318 [2018-11-18 12:15:05,484 INFO L604 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 [2018-11-18 12:15:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-11-18 12:15:05,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 312. [2018-11-18 12:15:05,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-11-18 12:15:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 330 transitions. [2018-11-18 12:15:05,489 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 330 transitions. Word has length 269 [2018-11-18 12:15:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:05,490 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 330 transitions. [2018-11-18 12:15:05,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-18 12:15:05,490 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 330 transitions. [2018-11-18 12:15:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-18 12:15:05,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:05,491 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:05,491 INFO L423 AbstractCegarLoop]: === Iteration 29 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:05,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:05,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1319497371, now seen corresponding path program 19 times [2018-11-18 12:15:05,491 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:05,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:05,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:05,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:05,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-18 12:15:05,935 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:05,935 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:05,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:05,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3082 backedges. 0 proven. 1273 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-18 12:15:06,435 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:06,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-18 12:15:06,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-18 12:15:06,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-18 12:15:06,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 12:15:06,436 INFO L87 Difference]: Start difference. First operand 312 states and 330 transitions. Second operand 42 states. [2018-11-18 12:15:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:06,563 INFO L93 Difference]: Finished difference Result 366 states and 396 transitions. [2018-11-18 12:15:06,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-18 12:15:06,564 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 281 [2018-11-18 12:15:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:06,565 INFO L225 Difference]: With dead ends: 366 [2018-11-18 12:15:06,565 INFO L226 Difference]: Without dead ends: 325 [2018-11-18 12:15:06,566 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 262 SyntacticMatches, 19 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 12:15:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-11-18 12:15:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2018-11-18 12:15:06,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-18 12:15:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 337 transitions. [2018-11-18 12:15:06,572 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 337 transitions. Word has length 281 [2018-11-18 12:15:06,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:06,575 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 337 transitions. [2018-11-18 12:15:06,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-18 12:15:06,575 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 337 transitions. [2018-11-18 12:15:06,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-18 12:15:06,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:06,576 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:06,577 INFO L423 AbstractCegarLoop]: === Iteration 30 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:06,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:06,577 INFO L82 PathProgramCache]: Analyzing trace with hash 973391301, now seen corresponding path program 20 times [2018-11-18 12:15:06,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:06,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:06,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:06,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:06,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-18 12:15:07,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:07,079 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:07,085 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:15:07,120 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:15:07,120 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:07,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 1410 refuted. 0 times theorem prover too weak. 1946 trivial. 0 not checked. [2018-11-18 12:15:07,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:07,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-18 12:15:07,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-18 12:15:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-18 12:15:07,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 12:15:07,513 INFO L87 Difference]: Start difference. First operand 319 states and 337 transitions. Second operand 44 states. [2018-11-18 12:15:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:07,626 INFO L93 Difference]: Finished difference Result 373 states and 403 transitions. [2018-11-18 12:15:07,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-18 12:15:07,626 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 293 [2018-11-18 12:15:07,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:07,627 INFO L225 Difference]: With dead ends: 373 [2018-11-18 12:15:07,627 INFO L226 Difference]: Without dead ends: 332 [2018-11-18 12:15:07,628 INFO L604 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 [2018-11-18 12:15:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-11-18 12:15:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 326. [2018-11-18 12:15:07,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2018-11-18 12:15:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 344 transitions. [2018-11-18 12:15:07,634 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 344 transitions. Word has length 293 [2018-11-18 12:15:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:07,634 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 344 transitions. [2018-11-18 12:15:07,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-18 12:15:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 344 transitions. [2018-11-18 12:15:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-18 12:15:07,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:07,636 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:07,636 INFO L423 AbstractCegarLoop]: === Iteration 31 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:07,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1062260389, now seen corresponding path program 21 times [2018-11-18 12:15:07,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:07,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:07,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:07,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:07,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-18 12:15:08,131 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:08,131 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:08,139 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:15:08,200 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-18 12:15:08,201 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:08,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3642 backedges. 0 proven. 1554 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-18 12:15:08,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:08,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-18 12:15:08,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 12:15:08,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 12:15:08,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-11-18 12:15:08,705 INFO L87 Difference]: Start difference. First operand 326 states and 344 transitions. Second operand 46 states. [2018-11-18 12:15:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:08,842 INFO L93 Difference]: Finished difference Result 380 states and 410 transitions. [2018-11-18 12:15:08,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-18 12:15:08,843 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 305 [2018-11-18 12:15:08,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:08,844 INFO L225 Difference]: With dead ends: 380 [2018-11-18 12:15:08,844 INFO L226 Difference]: Without dead ends: 339 [2018-11-18 12:15:08,845 INFO L604 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 [2018-11-18 12:15:08,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-11-18 12:15:08,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 333. [2018-11-18 12:15:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-11-18 12:15:08,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 351 transitions. [2018-11-18 12:15:08,850 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 351 transitions. Word has length 305 [2018-11-18 12:15:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:08,850 INFO L480 AbstractCegarLoop]: Abstraction has 333 states and 351 transitions. [2018-11-18 12:15:08,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 12:15:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 351 transitions. [2018-11-18 12:15:08,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-18 12:15:08,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:08,852 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:08,852 INFO L423 AbstractCegarLoop]: === Iteration 32 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:08,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:08,853 INFO L82 PathProgramCache]: Analyzing trace with hash -953846011, now seen corresponding path program 22 times [2018-11-18 12:15:08,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:08,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:08,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:08,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:08,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:09,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:09,405 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:09,412 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:15:09,451 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:15:09,451 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:09,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3940 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:09,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:09,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-18 12:15:09,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-18 12:15:09,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-18 12:15:09,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 12:15:09,879 INFO L87 Difference]: Start difference. First operand 333 states and 351 transitions. Second operand 48 states. [2018-11-18 12:15:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:09,993 INFO L93 Difference]: Finished difference Result 387 states and 417 transitions. [2018-11-18 12:15:09,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-18 12:15:09,994 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 317 [2018-11-18 12:15:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:09,995 INFO L225 Difference]: With dead ends: 387 [2018-11-18 12:15:09,995 INFO L226 Difference]: Without dead ends: 346 [2018-11-18 12:15:09,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 295 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 12:15:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2018-11-18 12:15:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 340. [2018-11-18 12:15:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-18 12:15:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 358 transitions. [2018-11-18 12:15:10,003 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 358 transitions. Word has length 317 [2018-11-18 12:15:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:10,003 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 358 transitions. [2018-11-18 12:15:10,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-18 12:15:10,003 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 358 transitions. [2018-11-18 12:15:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-11-18 12:15:10,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:10,005 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:10,005 INFO L423 AbstractCegarLoop]: === Iteration 33 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:10,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:10,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1555749861, now seen corresponding path program 23 times [2018-11-18 12:15:10,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:10,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:10,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:10,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:10,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-18 12:15:10,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:10,675 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:10,682 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:15:10,760 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2018-11-18 12:15:10,760 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:10,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 2003 proven. 936 refuted. 0 times theorem prover too weak. 1311 trivial. 0 not checked. [2018-11-18 12:15:10,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:10,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-18 12:15:10,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-18 12:15:10,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-18 12:15:10,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1475, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 12:15:10,901 INFO L87 Difference]: Start difference. First operand 340 states and 358 transitions. Second operand 44 states. [2018-11-18 12:15:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:12,035 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2018-11-18 12:15:12,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-11-18 12:15:12,035 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 329 [2018-11-18 12:15:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:12,036 INFO L225 Difference]: With dead ends: 568 [2018-11-18 12:15:12,036 INFO L226 Difference]: Without dead ends: 399 [2018-11-18 12:15:12,038 INFO L604 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 [2018-11-18 12:15:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-11-18 12:15:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 387. [2018-11-18 12:15:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-11-18 12:15:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 405 transitions. [2018-11-18 12:15:12,047 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 405 transitions. Word has length 329 [2018-11-18 12:15:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:12,047 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 405 transitions. [2018-11-18 12:15:12,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-18 12:15:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 405 transitions. [2018-11-18 12:15:12,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-11-18 12:15:12,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:12,049 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:12,049 INFO L423 AbstractCegarLoop]: === Iteration 34 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:12,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:12,050 INFO L82 PathProgramCache]: Analyzing trace with hash 878541535, now seen corresponding path program 24 times [2018-11-18 12:15:12,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:12,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:12,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:12,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-11-18 12:15:12,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:12,638 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:12,645 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:15:12,694 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-18 12:15:12,694 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:12,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3291 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 1428 trivial. 0 not checked. [2018-11-18 12:15:13,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:13,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-18 12:15:13,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-18 12:15:13,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-18 12:15:13,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 12:15:13,225 INFO L87 Difference]: Start difference. First operand 387 states and 405 transitions. Second operand 50 states. [2018-11-18 12:15:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:13,350 INFO L93 Difference]: Finished difference Result 436 states and 463 transitions. [2018-11-18 12:15:13,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-18 12:15:13,351 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 294 [2018-11-18 12:15:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:13,352 INFO L225 Difference]: With dead ends: 436 [2018-11-18 12:15:13,352 INFO L226 Difference]: Without dead ends: 388 [2018-11-18 12:15:13,353 INFO L604 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 [2018-11-18 12:15:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-11-18 12:15:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-11-18 12:15:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-18 12:15:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 398 transitions. [2018-11-18 12:15:13,359 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 398 transitions. Word has length 294 [2018-11-18 12:15:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:13,359 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 398 transitions. [2018-11-18 12:15:13,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-18 12:15:13,359 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 398 transitions. [2018-11-18 12:15:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-18 12:15:13,361 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:13,361 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:13,361 INFO L423 AbstractCegarLoop]: === Iteration 35 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:13,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:13,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1456651717, now seen corresponding path program 25 times [2018-11-18 12:15:13,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:13,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:13,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:13,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:13,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:14,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:14,103 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:14,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:14,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4263 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:14,660 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:14,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-18 12:15:14,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-18 12:15:14,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-18 12:15:14,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 12:15:14,661 INFO L87 Difference]: Start difference. First operand 383 states and 398 transitions. Second operand 52 states. [2018-11-18 12:15:14,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:14,771 INFO L93 Difference]: Finished difference Result 424 states and 446 transitions. [2018-11-18 12:15:14,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-18 12:15:14,772 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 331 [2018-11-18 12:15:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:14,773 INFO L225 Difference]: With dead ends: 424 [2018-11-18 12:15:14,773 INFO L226 Difference]: Without dead ends: 376 [2018-11-18 12:15:14,773 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 307 SyntacticMatches, 24 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 12:15:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-11-18 12:15:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2018-11-18 12:15:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2018-11-18 12:15:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 384 transitions. [2018-11-18 12:15:14,780 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 384 transitions. Word has length 331 [2018-11-18 12:15:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:14,780 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 384 transitions. [2018-11-18 12:15:14,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-18 12:15:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 384 transitions. [2018-11-18 12:15:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-18 12:15:14,782 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:14,782 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:14,782 INFO L423 AbstractCegarLoop]: === Iteration 36 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:14,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:14,783 INFO L82 PathProgramCache]: Analyzing trace with hash -2033410913, now seen corresponding path program 26 times [2018-11-18 12:15:14,783 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:14,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:14,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:14,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:15:14,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4435 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:15,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:15,407 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:15,418 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:15:15,457 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:15:15,457 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:15,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4435 backedges. 0 proven. 2200 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:15,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:15,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-18 12:15:15,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-18 12:15:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-18 12:15:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 12:15:15,969 INFO L87 Difference]: Start difference. First operand 372 states and 384 transitions. Second operand 54 states. [2018-11-18 12:15:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:16,126 INFO L93 Difference]: Finished difference Result 405 states and 422 transitions. [2018-11-18 12:15:16,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-18 12:15:16,127 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 338 [2018-11-18 12:15:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:16,128 INFO L225 Difference]: With dead ends: 405 [2018-11-18 12:15:16,128 INFO L226 Difference]: Without dead ends: 357 [2018-11-18 12:15:16,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 313 SyntacticMatches, 25 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1550 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 12:15:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-11-18 12:15:16,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 354. [2018-11-18 12:15:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2018-11-18 12:15:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 363 transitions. [2018-11-18 12:15:16,133 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 363 transitions. Word has length 338 [2018-11-18 12:15:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:16,134 INFO L480 AbstractCegarLoop]: Abstraction has 354 states and 363 transitions. [2018-11-18 12:15:16,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-18 12:15:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 363 transitions. [2018-11-18 12:15:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-11-18 12:15:16,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:16,136 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:16,136 INFO L423 AbstractCegarLoop]: === Iteration 37 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:16,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:16,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1790578249, now seen corresponding path program 27 times [2018-11-18 12:15:16,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:16,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:16,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:16,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:16,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-18 12:15:16,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:16,897 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:16,909 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:15:16,965 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-11-18 12:15:16,965 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:16,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4188 backedges. 0 proven. 2379 refuted. 0 times theorem prover too weak. 1809 trivial. 0 not checked. [2018-11-18 12:15:17,531 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:17,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-11-18 12:15:17,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-18 12:15:17,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-18 12:15:17,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 12:15:17,532 INFO L87 Difference]: Start difference. First operand 354 states and 363 transitions. Second operand 56 states. [2018-11-18 12:15:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:17,708 INFO L93 Difference]: Finished difference Result 379 states and 391 transitions. [2018-11-18 12:15:17,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-18 12:15:17,709 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 330 [2018-11-18 12:15:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:17,710 INFO L225 Difference]: With dead ends: 379 [2018-11-18 12:15:17,711 INFO L226 Difference]: Without dead ends: 331 [2018-11-18 12:15:17,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 304 SyntacticMatches, 26 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 12:15:17,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-11-18 12:15:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2018-11-18 12:15:17,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-18 12:15:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 335 transitions. [2018-11-18 12:15:17,716 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 335 transitions. Word has length 330 [2018-11-18 12:15:17,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:17,717 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 335 transitions. [2018-11-18 12:15:17,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-18 12:15:17,717 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 335 transitions. [2018-11-18 12:15:17,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-18 12:15:17,719 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:17,719 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:17,719 INFO L423 AbstractCegarLoop]: === Iteration 38 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:17,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:17,719 INFO L82 PathProgramCache]: Analyzing trace with hash -359461409, now seen corresponding path program 28 times [2018-11-18 12:15:17,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:17,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:17,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:17,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:17,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:18,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:18,501 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:18,507 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 12:15:18,547 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 12:15:18,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:18,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 2565 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:19,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:19,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-11-18 12:15:19,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-18 12:15:19,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-18 12:15:19,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-18 12:15:19,113 INFO L87 Difference]: Start difference. First operand 329 states and 335 transitions. Second operand 58 states. [2018-11-18 12:15:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:19,251 INFO L93 Difference]: Finished difference Result 346 states and 353 transitions. [2018-11-18 12:15:19,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-18 12:15:19,252 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 352 [2018-11-18 12:15:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:19,252 INFO L225 Difference]: With dead ends: 346 [2018-11-18 12:15:19,253 INFO L226 Difference]: Without dead ends: 298 [2018-11-18 12:15:19,253 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 325 SyntacticMatches, 27 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-18 12:15:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2018-11-18 12:15:19,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2018-11-18 12:15:19,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-11-18 12:15:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2018-11-18 12:15:19,258 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 352 [2018-11-18 12:15:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:19,258 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2018-11-18 12:15:19,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-18 12:15:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2018-11-18 12:15:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-18 12:15:19,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:19,260 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:19,260 INFO L423 AbstractCegarLoop]: === Iteration 39 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:19,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:19,261 INFO L82 PathProgramCache]: Analyzing trace with hash 199336841, now seen corresponding path program 29 times [2018-11-18 12:15:19,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:19,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:19,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:19,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:19,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-18 12:15:19,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:19,961 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:19,967 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 12:15:20,027 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-18 12:15:20,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:20,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 0 proven. 2758 refuted. 0 times theorem prover too weak. 2088 trivial. 0 not checked. [2018-11-18 12:15:20,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:20,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-11-18 12:15:20,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-11-18 12:15:20,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-11-18 12:15:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-18 12:15:20,611 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand 60 states. [2018-11-18 12:15:20,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:20,752 INFO L93 Difference]: Finished difference Result 306 states and 308 transitions. [2018-11-18 12:15:20,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-18 12:15:20,752 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 354 [2018-11-18 12:15:20,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:20,753 INFO L225 Difference]: With dead ends: 306 [2018-11-18 12:15:20,754 INFO L226 Difference]: Without dead ends: 258 [2018-11-18 12:15:20,754 INFO L604 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 [2018-11-18 12:15:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-11-18 12:15:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2018-11-18 12:15:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2018-11-18 12:15:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2018-11-18 12:15:20,758 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 354 [2018-11-18 12:15:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:20,759 INFO L480 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2018-11-18 12:15:20,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-11-18 12:15:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2018-11-18 12:15:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-11-18 12:15:20,760 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:15:20,761 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:15:20,761 INFO L423 AbstractCegarLoop]: === Iteration 40 === [hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 12:15:20,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:15:20,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1936044257, now seen corresponding path program 30 times [2018-11-18 12:15:20,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:15:20,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:15:20,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:20,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:15:20,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:15:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:15:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:21,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:15:21,545 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/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 [2018-11-18 12:15:21,551 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 12:15:21,630 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-18 12:15:21,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:15:21,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:15:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5193 backedges. 0 proven. 2958 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2018-11-18 12:15:22,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:15:22,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-11-18 12:15:22,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-18 12:15:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-18 12:15:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 12:15:22,383 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand 62 states. [2018-11-18 12:15:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:15:22,541 INFO L93 Difference]: Finished difference Result 258 states and 258 transitions. [2018-11-18 12:15:22,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-18 12:15:22,542 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 366 [2018-11-18 12:15:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:15:22,542 INFO L225 Difference]: With dead ends: 258 [2018-11-18 12:15:22,542 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:15:22,543 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 337 SyntacticMatches, 29 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 12:15:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:15:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:15:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:15:22,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:15:22,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2018-11-18 12:15:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:15:22,543 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:15:22,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-18 12:15:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:15:22,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:15:22,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:15:22,726 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 20 [2018-11-18 12:15:22,730 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 12:15:22,730 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:15:22,730 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,730 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,730 INFO L425 ceAbstractionStarter]: For program point hanoiErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,730 INFO L421 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)))))) [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point L19(lines 19 21) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point L22-3(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point L22-4(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point L22-5(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point L22-6(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point L22-7(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L428 ceAbstractionStarter]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,731 INFO L425 ceAbstractionStarter]: For program point hanoiErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:15:22,732 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point L32(lines 32 36) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L421 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~n~0 31) (<= 1 main_~n~0)) [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point L28(lines 28 30) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2018-11-18 12:15:22,732 INFO L425 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2018-11-18 12:15:22,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:15:22 BoogieIcfgContainer [2018-11-18 12:15:22,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:15:22,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:15:22,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:15:22,736 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:15:22,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:14:54" (3/4) ... [2018-11-18 12:15:22,739 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:15:22,745 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:15:22,745 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2018-11-18 12:15:22,746 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:15:22,749 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 12:15:22,749 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 12:15:22,749 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:15:22,781 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ce14f90a-b1d1-4c6a-abc6-dbc888e22ede/bin-2019/uautomizer/witness.graphml [2018-11-18 12:15:22,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:15:22,782 INFO L168 Benchmark]: Toolchain (without parser) took 28390.46 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 576.7 MB). Free memory was 960.2 MB in the beginning and 900.4 MB in the end (delta: 59.8 MB). Peak memory consumption was 636.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:22,782 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:15:22,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.63 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:22,783 INFO L168 Benchmark]: Boogie Preprocessor took 17.07 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:22,783 INFO L168 Benchmark]: RCFGBuilder took 175.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -201.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:22,783 INFO L168 Benchmark]: TraceAbstraction took 28001.68 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 414.7 MB). Free memory was 1.1 GB in the beginning and 900.4 MB in the end (delta: 247.6 MB). Peak memory consumption was 662.3 MB. Max. memory is 11.5 GB. [2018-11-18 12:15:22,784 INFO L168 Benchmark]: Witness Printer took 45.60 ms. Allocated memory is still 1.6 GB. Free memory is still 900.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:15:22,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.63 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.07 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -201.2 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 28001.68 ms. Allocated memory was 1.2 GB in the beginning and 1.6 GB in the end (delta: 414.7 MB). Free memory was 1.1 GB in the beginning and 900.4 MB in the end (delta: 247.6 MB). Peak memory consumption was 662.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.60 ms. Allocated memory is still 1.6 GB. Free memory is still 900.4 MB. There was no memory consumed. 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, 27.9s OverallTime, 40 OverallIterations, 32 TraceHistogramMax, 4.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 1107 SDtfs, 2516 SDslu, 13169 SDs, 0 SdLazy, 6352 SolverSat, 286 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7856 GetRequests, 6271 SyntacticMatches, 438 SemanticMatches, 1147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23754 ImplicationChecksByTransitivity, 18.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 40 MinimizatonAttempts, 215 StatesRemovedByMinimization, 35 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 45 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 323 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 13422 NumberOfCodeBlocks, 13327 NumberOfCodeBlocksAsserted, 386 NumberOfCheckSat, 13346 ConstructedInterpolants, 0 QuantifiedInterpolants, 7286954 SizeOfPredicates, 60 NumberOfNonLiveVariables, 11413 ConjunctsInSsa, 1092 ConjunctsInUnsatCore, 76 InterpolantComputations, 4 PerfectInterpolantSequences, 72161/134850 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...