./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6092b6e2bef07c2401a6d2b7c5ee309bc5dbc34 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:02:57,464 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:02:57,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:02:57,473 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:02:57,474 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:02:57,475 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:02:57,476 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:02:57,477 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:02:57,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:02:57,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:02:57,479 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:02:57,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:02:57,480 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:02:57,481 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:02:57,482 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:02:57,482 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:02:57,483 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:02:57,485 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:02:57,486 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:02:57,488 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:02:57,489 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:02:57,490 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:02:57,491 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:02:57,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:02:57,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:02:57,492 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:02:57,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:02:57,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:02:57,494 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:02:57,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:02:57,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:02:57,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:02:57,496 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:02:57,496 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:02:57,496 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:02:57,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:02:57,497 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 03:02:57,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:02:57,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:02:57,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:02:57,509 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 03:02:57,509 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 03:02:57,509 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 03:02:57,509 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 03:02:57,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:02:57,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:02:57,511 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:02:57,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:02:57,511 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:02:57,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:02:57,512 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:02:57,513 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:02:57,513 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:02:57,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:02:57,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:02:57,513 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:02:57,513 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:02:57,513 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 03:02:57,514 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:02:57,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:02:57,514 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_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6092b6e2bef07c2401a6d2b7c5ee309bc5dbc34 [2018-11-10 03:02:57,538 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:02:57,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:02:57,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:02:57,550 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:02:57,551 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:02:57,551 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c [2018-11-10 03:02:57,595 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/data/1c37f6646/adf3cdf23a1243c18466a071215d1ca7/FLAG0631dd847 [2018-11-10 03:02:57,940 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:02:57,940 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c [2018-11-10 03:02:57,945 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/data/1c37f6646/adf3cdf23a1243c18466a071215d1ca7/FLAG0631dd847 [2018-11-10 03:02:57,955 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/data/1c37f6646/adf3cdf23a1243c18466a071215d1ca7 [2018-11-10 03:02:57,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:02:57,958 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 03:02:57,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:02:57,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:02:57,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:02:57,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:02:57" (1/1) ... [2018-11-10 03:02:57,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ca410a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:57, skipping insertion in model container [2018-11-10 03:02:57,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:02:57" (1/1) ... [2018-11-10 03:02:57,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:02:57,977 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:02:58,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:02:58,068 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:02:58,078 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:02:58,086 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:02:58,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58 WrapperNode [2018-11-10 03:02:58,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:02:58,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:02:58,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:02:58,087 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:02:58,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... [2018-11-10 03:02:58,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:02:58,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:02:58,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:02:58,103 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:02:58,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:02:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:02:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:02:58,174 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-10 03:02:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-10 03:02:58,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:02:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 03:02:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 03:02:58,175 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-10 03:02:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-10 03:02:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:02:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:02:58,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:02:58,310 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:02:58,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:02:58 BoogieIcfgContainer [2018-11-10 03:02:58,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:02:58,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:02:58,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:02:58,314 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:02:58,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:02:57" (1/3) ... [2018-11-10 03:02:58,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d03d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:02:58, skipping insertion in model container [2018-11-10 03:02:58,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:02:58" (2/3) ... [2018-11-10 03:02:58,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d03d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:02:58, skipping insertion in model container [2018-11-10 03:02:58,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:02:58" (3/3) ... [2018-11-10 03:02:58,317 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5_true-unreach-call_true-termination.c [2018-11-10 03:02:58,325 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:02:58,331 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:02:58,344 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:02:58,365 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:02:58,366 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:02:58,366 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:02:58,366 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:02:58,366 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:02:58,366 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:02:58,366 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:02:58,366 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:02:58,366 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:02:58,378 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-10 03:02:58,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 03:02:58,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:58,382 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:58,384 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:58,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:58,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-10 03:02:58,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:58,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:58,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:58,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:58,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:02:58,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:02:58,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:02:58,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:02:58,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:02:58,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:02:58,539 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-10 03:02:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:02:58,616 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-10 03:02:58,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:02:58,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 03:02:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:02:58,622 INFO L225 Difference]: With dead ends: 44 [2018-11-10 03:02:58,623 INFO L226 Difference]: Without dead ends: 30 [2018-11-10 03:02:58,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:02:58,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-10 03:02:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-10 03:02:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 03:02:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 03:02:58,651 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-10 03:02:58,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:02:58,651 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 03:02:58,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:02:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 03:02:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-10 03:02:58,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:58,652 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:58,652 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:58,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-10 03:02:58,653 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:58,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:58,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:58,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:58,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:02:58,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:02:58,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:02:58,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:02:58,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:02:58,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:02:58,696 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-10 03:02:58,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:02:58,777 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-10 03:02:58,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:02:58,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-10 03:02:58,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:02:58,778 INFO L225 Difference]: With dead ends: 36 [2018-11-10 03:02:58,778 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 03:02:58,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:02:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 03:02:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-10 03:02:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-10 03:02:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-10 03:02:58,785 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-10 03:02:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:02:58,786 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-10 03:02:58,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:02:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-10 03:02:58,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 03:02:58,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:58,787 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:58,787 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:58,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:58,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-10 03:02:58,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:58,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:58,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:58,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:58,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 03:02:58,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:02:58,859 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:02:58,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:58,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:02:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 03:02:58,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:02:58,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-11-10 03:02:58,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 03:02:58,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 03:02:58,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-10 03:02:58,951 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2018-11-10 03:02:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:02:59,080 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2018-11-10 03:02:59,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 03:02:59,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-11-10 03:02:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:02:59,081 INFO L225 Difference]: With dead ends: 58 [2018-11-10 03:02:59,081 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 03:02:59,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-10 03:02:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 03:02:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-10 03:02:59,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 03:02:59,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-10 03:02:59,089 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2018-11-10 03:02:59,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:02:59,089 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-10 03:02:59,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 03:02:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-11-10 03:02:59,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 03:02:59,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:59,090 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:59,091 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:59,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:59,091 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2018-11-10 03:02:59,091 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:59,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:59,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 03:02:59,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:02:59,146 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:02:59,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:02:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 03:02:59,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:02:59,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-10 03:02:59,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 03:02:59,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 03:02:59,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 03:02:59,197 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2018-11-10 03:02:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:02:59,264 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2018-11-10 03:02:59,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 03:02:59,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-10 03:02:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:02:59,266 INFO L225 Difference]: With dead ends: 43 [2018-11-10 03:02:59,266 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 03:02:59,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-10 03:02:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 03:02:59,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-11-10 03:02:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 03:02:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-10 03:02:59,273 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2018-11-10 03:02:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:02:59,274 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-10 03:02:59,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 03:02:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2018-11-10 03:02:59,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 03:02:59,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:59,275 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:59,276 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:59,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:59,276 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-10 03:02:59,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:59,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:59,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:02:59,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:02:59,336 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:02:59,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:02:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-10 03:02:59,428 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:02:59,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2018-11-10 03:02:59,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 03:02:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 03:02:59,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:02:59,429 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 10 states. [2018-11-10 03:02:59,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:02:59,584 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2018-11-10 03:02:59,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 03:02:59,585 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2018-11-10 03:02:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:02:59,588 INFO L225 Difference]: With dead ends: 70 [2018-11-10 03:02:59,588 INFO L226 Difference]: Without dead ends: 39 [2018-11-10 03:02:59,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-10 03:02:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-10 03:02:59,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-10 03:02:59,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 03:02:59,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-10 03:02:59,594 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2018-11-10 03:02:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:02:59,595 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-10 03:02:59,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 03:02:59,595 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-11-10 03:02:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-10 03:02:59,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:59,596 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:59,596 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:59,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2018-11-10 03:02:59,597 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:59,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:59,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 03:02:59,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:02:59,646 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:02:59,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:02:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:02:59,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:02:59,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-11-10 03:02:59,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 03:02:59,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 03:02:59,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:02:59,711 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 10 states. [2018-11-10 03:02:59,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:02:59,802 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2018-11-10 03:02:59,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 03:02:59,803 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-11-10 03:02:59,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:02:59,804 INFO L225 Difference]: With dead ends: 61 [2018-11-10 03:02:59,804 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 03:02:59,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-10 03:02:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 03:02:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2018-11-10 03:02:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 03:02:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-11-10 03:02:59,814 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 40 [2018-11-10 03:02:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:02:59,814 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-11-10 03:02:59,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 03:02:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-11-10 03:02:59,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-10 03:02:59,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:02:59,816 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:02:59,816 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:02:59,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:02:59,816 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2018-11-10 03:02:59,816 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:02:59,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:02:59,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:02:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-10 03:02:59,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:02:59,877 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:02:59,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:02:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:02:59,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:02:59,936 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-10 03:02:59,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:02:59,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-11-10 03:02:59,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 03:02:59,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 03:02:59,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 03:02:59,952 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 10 states. [2018-11-10 03:03:00,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:00,039 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2018-11-10 03:03:00,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 03:03:00,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-10 03:03:00,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:00,041 INFO L225 Difference]: With dead ends: 71 [2018-11-10 03:03:00,041 INFO L226 Difference]: Without dead ends: 67 [2018-11-10 03:03:00,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-10 03:03:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-10 03:03:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2018-11-10 03:03:00,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 03:03:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2018-11-10 03:03:00,051 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 54 [2018-11-10 03:03:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:00,052 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2018-11-10 03:03:00,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 03:03:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2018-11-10 03:03:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-10 03:03:00,054 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:00,054 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:00,054 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:00,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:00,055 INFO L82 PathProgramCache]: Analyzing trace with hash 671849284, now seen corresponding path program 2 times [2018-11-10 03:03:00,055 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:00,055 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:00,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:00,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:03:00,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-10 03:03:00,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:00,159 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:00,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:03:00,192 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:03:00,193 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:03:00,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-10 03:03:00,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:00,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-11-10 03:03:00,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 03:03:00,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 03:03:00,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-10 03:03:00,266 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 14 states. [2018-11-10 03:03:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:00,537 INFO L93 Difference]: Finished difference Result 127 states and 238 transitions. [2018-11-10 03:03:00,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 03:03:00,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2018-11-10 03:03:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:00,539 INFO L225 Difference]: With dead ends: 127 [2018-11-10 03:03:00,539 INFO L226 Difference]: Without dead ends: 84 [2018-11-10 03:03:00,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2018-11-10 03:03:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-10 03:03:00,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2018-11-10 03:03:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-10 03:03:00,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 101 transitions. [2018-11-10 03:03:00,550 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 101 transitions. Word has length 80 [2018-11-10 03:03:00,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:00,551 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 101 transitions. [2018-11-10 03:03:00,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 03:03:00,551 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 101 transitions. [2018-11-10 03:03:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-10 03:03:00,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:00,553 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:00,553 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:00,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:00,554 INFO L82 PathProgramCache]: Analyzing trace with hash 733803902, now seen corresponding path program 1 times [2018-11-10 03:03:00,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:00,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:00,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:00,555 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:03:00,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 88 proven. 29 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-11-10 03:03:00,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:00,674 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:00,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:03:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:00,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 34 proven. 54 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-11-10 03:03:00,776 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:00,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2018-11-10 03:03:00,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-10 03:03:00,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-10 03:03:00,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2018-11-10 03:03:00,777 INFO L87 Difference]: Start difference. First operand 65 states and 101 transitions. Second operand 18 states. [2018-11-10 03:03:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:01,142 INFO L93 Difference]: Finished difference Result 171 states and 317 transitions. [2018-11-10 03:03:01,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 03:03:01,142 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 108 [2018-11-10 03:03:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:01,144 INFO L225 Difference]: With dead ends: 171 [2018-11-10 03:03:01,144 INFO L226 Difference]: Without dead ends: 103 [2018-11-10 03:03:01,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2018-11-10 03:03:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-10 03:03:01,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2018-11-10 03:03:01,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-10 03:03:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 127 transitions. [2018-11-10 03:03:01,158 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 127 transitions. Word has length 108 [2018-11-10 03:03:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:01,158 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 127 transitions. [2018-11-10 03:03:01,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-10 03:03:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 127 transitions. [2018-11-10 03:03:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-10 03:03:01,159 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:01,160 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:01,160 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:01,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1504181040, now seen corresponding path program 2 times [2018-11-10 03:03:01,160 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:01,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:01,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:01,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:03:01,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 40 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-10 03:03:01,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:01,257 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:01,266 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:03:01,283 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:03:01,283 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:03:01,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-10 03:03:01,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:01,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2018-11-10 03:03:01,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 03:03:01,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 03:03:01,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-10 03:03:01,376 INFO L87 Difference]: Start difference. First operand 85 states and 127 transitions. Second operand 15 states. [2018-11-10 03:03:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:01,674 INFO L93 Difference]: Finished difference Result 212 states and 384 transitions. [2018-11-10 03:03:01,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-10 03:03:01,674 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-11-10 03:03:01,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:01,675 INFO L225 Difference]: With dead ends: 212 [2018-11-10 03:03:01,675 INFO L226 Difference]: Without dead ends: 140 [2018-11-10 03:03:01,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2018-11-10 03:03:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-11-10 03:03:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2018-11-10 03:03:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-11-10 03:03:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 209 transitions. [2018-11-10 03:03:01,688 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 209 transitions. Word has length 82 [2018-11-10 03:03:01,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:01,689 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 209 transitions. [2018-11-10 03:03:01,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 03:03:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 209 transitions. [2018-11-10 03:03:01,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-10 03:03:01,691 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:01,691 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:01,692 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:01,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1282397779, now seen corresponding path program 3 times [2018-11-10 03:03:01,692 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:01,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:01,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:01,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:03:01,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 114 proven. 36 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2018-11-10 03:03:01,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:01,774 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:01,790 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:03:01,802 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-10 03:03:01,802 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:03:01,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 86 proven. 20 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2018-11-10 03:03:01,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:01,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-11-10 03:03:01,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 03:03:01,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 03:03:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-11-10 03:03:01,863 INFO L87 Difference]: Start difference. First operand 128 states and 209 transitions. Second operand 14 states. [2018-11-10 03:03:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:02,099 INFO L93 Difference]: Finished difference Result 279 states and 505 transitions. [2018-11-10 03:03:02,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-10 03:03:02,099 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-11-10 03:03:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:02,101 INFO L225 Difference]: With dead ends: 279 [2018-11-10 03:03:02,101 INFO L226 Difference]: Without dead ends: 163 [2018-11-10 03:03:02,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2018-11-10 03:03:02,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-11-10 03:03:02,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 144. [2018-11-10 03:03:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-11-10 03:03:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 235 transitions. [2018-11-10 03:03:02,113 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 235 transitions. Word has length 124 [2018-11-10 03:03:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:02,113 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 235 transitions. [2018-11-10 03:03:02,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 03:03:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 235 transitions. [2018-11-10 03:03:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-10 03:03:02,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:02,115 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:02,116 INFO L424 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:02,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:02,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2145076032, now seen corresponding path program 1 times [2018-11-10 03:03:02,116 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:02,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:02,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:02,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:03:02,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:02,198 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 105 proven. 25 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-11-10 03:03:02,198 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:02,199 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:02,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:03:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:02,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 68 proven. 96 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-10 03:03:02,323 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:02,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2018-11-10 03:03:02,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 03:03:02,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 03:03:02,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-10 03:03:02,324 INFO L87 Difference]: Start difference. First operand 144 states and 235 transitions. Second operand 15 states. [2018-11-10 03:03:02,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:02,481 INFO L93 Difference]: Finished difference Result 177 states and 319 transitions. [2018-11-10 03:03:02,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 03:03:02,482 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2018-11-10 03:03:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:02,483 INFO L225 Difference]: With dead ends: 177 [2018-11-10 03:03:02,483 INFO L226 Difference]: Without dead ends: 115 [2018-11-10 03:03:02,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-11-10 03:03:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-11-10 03:03:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2018-11-10 03:03:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-11-10 03:03:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 150 transitions. [2018-11-10 03:03:02,491 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 150 transitions. Word has length 136 [2018-11-10 03:03:02,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:02,492 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 150 transitions. [2018-11-10 03:03:02,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 03:03:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 150 transitions. [2018-11-10 03:03:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-10 03:03:02,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:02,493 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:02,494 INFO L424 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:02,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:02,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1540036056, now seen corresponding path program 2 times [2018-11-10 03:03:02,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:02,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:02,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:02,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:03:02,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-10 03:03:02,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:02,736 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:02,742 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 03:03:02,768 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 03:03:02,768 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:03:02,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-10 03:03:03,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:03,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2018-11-10 03:03:03,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-10 03:03:03,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-10 03:03:03,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-11-10 03:03:03,002 INFO L87 Difference]: Start difference. First operand 112 states and 150 transitions. Second operand 28 states. [2018-11-10 03:03:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:03,143 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2018-11-10 03:03:03,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-10 03:03:03,144 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2018-11-10 03:03:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:03,146 INFO L225 Difference]: With dead ends: 136 [2018-11-10 03:03:03,146 INFO L226 Difference]: Without dead ends: 132 [2018-11-10 03:03:03,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-11-10 03:03:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-11-10 03:03:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 117. [2018-11-10 03:03:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-11-10 03:03:03,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 159 transitions. [2018-11-10 03:03:03,154 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 159 transitions. Word has length 109 [2018-11-10 03:03:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:03,155 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 159 transitions. [2018-11-10 03:03:03,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-10 03:03:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 159 transitions. [2018-11-10 03:03:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-10 03:03:03,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:03,156 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:03,156 INFO L424 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:03,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 235412830, now seen corresponding path program 3 times [2018-11-10 03:03:03,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:03,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:03,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:03,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:03:03,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-11-10 03:03:03,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:03,234 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:03,251 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 03:03:03,262 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 03:03:03,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:03:03,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 76 proven. 3 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-11-10 03:03:03,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:03,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2018-11-10 03:03:03,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 03:03:03,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 03:03:03,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-10 03:03:03,306 INFO L87 Difference]: Start difference. First operand 117 states and 159 transitions. Second operand 11 states. [2018-11-10 03:03:03,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:03,376 INFO L93 Difference]: Finished difference Result 218 states and 308 transitions. [2018-11-10 03:03:03,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 03:03:03,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2018-11-10 03:03:03,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:03,378 INFO L225 Difference]: With dead ends: 218 [2018-11-10 03:03:03,378 INFO L226 Difference]: Without dead ends: 114 [2018-11-10 03:03:03,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-11-10 03:03:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-10 03:03:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2018-11-10 03:03:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-10 03:03:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2018-11-10 03:03:03,384 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 142 transitions. Word has length 108 [2018-11-10 03:03:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:03,384 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 142 transitions. [2018-11-10 03:03:03,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 03:03:03,384 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 142 transitions. [2018-11-10 03:03:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-10 03:03:03,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:03:03,386 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:03:03,386 INFO L424 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:03:03,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:03:03,386 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 4 times [2018-11-10 03:03:03,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 03:03:03,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 03:03:03,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:03,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 03:03:03,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:03:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:03:03,478 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 57 proven. 136 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-11-10 03:03:03,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:03:03,478 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:03:03,485 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 03:03:03,504 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 03:03:03,504 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 03:03:03,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:03:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 61 proven. 130 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-10 03:03:03,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 03:03:03,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 14 [2018-11-10 03:03:03,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 03:03:03,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 03:03:03,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-11-10 03:03:03,575 INFO L87 Difference]: Start difference. First operand 109 states and 142 transitions. Second operand 14 states. [2018-11-10 03:03:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:03:03,674 INFO L93 Difference]: Finished difference Result 112 states and 145 transitions. [2018-11-10 03:03:03,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 03:03:03,674 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2018-11-10 03:03:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:03:03,675 INFO L225 Difference]: With dead ends: 112 [2018-11-10 03:03:03,675 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 03:03:03,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-11-10 03:03:03,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 03:03:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 03:03:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 03:03:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 03:03:03,676 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 136 [2018-11-10 03:03:03,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:03:03,676 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 03:03:03,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 03:03:03,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 03:03:03,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 03:03:03,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 03:03:03,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,779 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,844 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,864 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,868 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,869 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,872 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,886 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,897 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,901 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,902 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:03,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-10 03:03:04,073 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2018-11-10 03:03:04,214 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 24 [2018-11-10 03:03:04,216 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 03:03:04,216 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:03:04,216 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:03:04,216 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 03:03:04,216 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 03:03:04,216 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 03:03:04,216 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-11-10 03:03:04,216 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-10 03:03:04,216 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-10 03:03:04,216 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L421 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 5 main_~x~0) (<= main_~x~0 5)) [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L428 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-11-10 03:03:04,217 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| fibo2_~n) (<= 2 |fibo2_#in~n|)) [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L421 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1) (<= |fibo2_#in~n| 3)))) (and (<= fibo2_~n |fibo2_#in~n|) (or (<= 4 fibo2_~n) .cse0) (or (and (<= |fibo2_#t~ret2| 2) (<= 2 |fibo2_#t~ret2|)) (<= 5 |fibo2_#in~n|) .cse0) (<= |fibo2_#in~n| fibo2_~n) (<= 2 |fibo2_#in~n|))) [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-11-10 03:03:04,217 INFO L425 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L428 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-11-10 03:03:04,218 INFO L421 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (< 1 |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L421 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (let ((.cse0 (<= 4 fibo1_~n)) (.cse1 (<= |fibo1_#in~n| 4))) (or (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3) .cse0) (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1) .cse1) (<= 6 |fibo1_#in~n|) (and .cse0 .cse1))) (< 1 |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-10 03:03:04,218 INFO L425 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-11-10 03:03:04,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:03:04 BoogieIcfgContainer [2018-11-10 03:03:04,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:03:04,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:03:04,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:03:04,221 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:03:04,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:02:58" (3/4) ... [2018-11-10 03:03:04,224 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 03:03:04,229 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 03:03:04,229 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 03:03:04,230 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-11-10 03:03:04,230 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-11-10 03:03:04,233 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-10 03:03:04,233 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 03:03:04,233 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 03:03:04,264 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0ef5745f-5a02-435b-b26d-637cd98a228d/bin-2019/uautomizer/witness.graphml [2018-11-10 03:03:04,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:03:04,264 INFO L168 Benchmark]: Toolchain (without parser) took 6306.98 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 313.5 MB). Free memory was 959.1 MB in the beginning and 939.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 333.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:03:04,265 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:03:04,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.23 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:03:04,266 INFO L168 Benchmark]: Boogie Preprocessor took 15.57 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:03:04,266 INFO L168 Benchmark]: RCFGBuilder took 208.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:03:04,266 INFO L168 Benchmark]: TraceAbstraction took 5908.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 176.7 MB). Free memory was 1.1 GB in the beginning and 947.2 MB in the end (delta: 175.0 MB). Peak memory consumption was 351.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:03:04,267 INFO L168 Benchmark]: Witness Printer took 43.10 ms. Allocated memory is still 1.3 GB. Free memory was 947.2 MB in the beginning and 939.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2018-11-10 03:03:04,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.23 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.57 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 208.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 948.4 MB in the beginning and 1.1 GB in the end (delta: -173.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5908.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 176.7 MB). Free memory was 1.1 GB in the beginning and 947.2 MB in the end (delta: 175.0 MB). Peak memory consumption was 351.7 MB. Max. memory is 11.5 GB. * Witness Printer took 43.10 ms. Allocated memory is still 1.3 GB. Free memory was 947.2 MB in the beginning and 939.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 15 OverallIterations, 10 TraceHistogramMax, 2.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 462 SDtfs, 451 SDslu, 3130 SDs, 0 SdLazy, 3024 SolverSat, 392 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1316 GetRequests, 1061 SyntacticMatches, 13 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144occurred in iteration=11, 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: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 128 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 350 PreInvPairs, 668 NumberOfFragments, 124 HoareAnnotationTreeSize, 350 FomulaSimplifications, 17137 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 11 FomulaSimplificationsInter, 1519 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2165 NumberOfCodeBlocks, 2010 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2137 ConstructedInterpolants, 0 QuantifiedInterpolants, 395643 SizeOfPredicates, 51 NumberOfNonLiveVariables, 2026 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 3824/4738 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...