./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/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 9918b49e0d76e4ce36b6a6760021b33460a8ae9b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 04:45:09,437 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:45:09,438 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:45:09,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:45:09,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:45:09,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:45:09,445 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:45:09,445 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:45:09,446 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:45:09,447 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:45:09,447 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:45:09,447 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:45:09,448 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:45:09,449 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:45:09,449 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:45:09,450 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:45:09,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:45:09,452 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:45:09,453 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:45:09,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:45:09,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:45:09,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:45:09,457 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:45:09,457 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:45:09,457 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:45:09,457 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:45:09,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:45:09,458 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:45:09,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:45:09,459 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:45:09,459 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:45:09,460 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:45:09,460 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:45:09,460 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:45:09,460 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:45:09,461 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:45:09,461 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:45:09,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:45:09,471 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:45:09,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:45:09,471 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:45:09,472 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:45:09,472 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:45:09,472 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:45:09,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:45:09,472 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:45:09,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:45:09,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:45:09,474 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:45:09,474 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:45:09,474 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:45:09,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:45:09,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:45:09,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:45:09,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:45:09,475 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:45:09,475 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:45:09,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:45:09,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:45:09,475 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_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/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 -> 9918b49e0d76e4ce36b6a6760021b33460a8ae9b [2018-11-10 04:45:09,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:45:09,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:45:09,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:45:09,511 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:45:09,511 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:45:09,512 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-10 04:45:09,554 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/data/9c0de049b/c5a4fef3d32046f6834fa2fafb832a8a/FLAG3b6937f85 [2018-11-10 04:45:09,936 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:45:09,937 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/sv-benchmarks/c/bitvector/gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-10 04:45:09,941 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/data/9c0de049b/c5a4fef3d32046f6834fa2fafb832a8a/FLAG3b6937f85 [2018-11-10 04:45:09,950 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/data/9c0de049b/c5a4fef3d32046f6834fa2fafb832a8a [2018-11-10 04:45:09,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:45:09,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:45:09,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:45:09,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:45:09,957 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:45:09,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:45:09" (1/1) ... [2018-11-10 04:45:09,959 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 04:45:09, skipping insertion in model container [2018-11-10 04:45:09,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:45:09" (1/1) ... [2018-11-10 04:45:09,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:45:09,977 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:45:10,074 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:45:10,076 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:45:10,087 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:45:10,096 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:45:10,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10 WrapperNode [2018-11-10 04:45:10,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:45:10,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:45:10,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:45:10,097 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:45:10,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... [2018-11-10 04:45:10,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:45:10,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:45:10,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:45:10,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:45:10,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/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 04:45:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:45:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:45:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 04:45:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd_test [2018-11-10 04:45:10,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:45:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:45:10,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:45:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 04:45:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure gcd_test [2018-11-10 04:45:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:45:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:45:10,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:45:10,283 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:45:10,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:45:10 BoogieIcfgContainer [2018-11-10 04:45:10,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:45:10,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:45:10,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:45:10,287 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:45:10,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:45:09" (1/3) ... [2018-11-10 04:45:10,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b8cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:45:10, skipping insertion in model container [2018-11-10 04:45:10,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:45:10" (2/3) ... [2018-11-10 04:45:10,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4b8cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:45:10, skipping insertion in model container [2018-11-10 04:45:10,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:45:10" (3/3) ... [2018-11-10 04:45:10,290 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4_true-unreach-call_true-no-overflow_true-termination.i [2018-11-10 04:45:10,297 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:45:10,302 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:45:10,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:45:10,330 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:45:10,330 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:45:10,330 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:45:10,331 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:45:10,331 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:45:10,331 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:45:10,331 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:45:10,331 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:45:10,331 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:45:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-10 04:45:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:45:10,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:10,351 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:10,352 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:10,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:10,355 INFO L82 PathProgramCache]: Analyzing trace with hash -17810400, now seen corresponding path program 1 times [2018-11-10 04:45:10,357 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:10,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:10,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,410 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:10,410 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:10,410 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:10,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:10,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:10,488 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 04:45:10,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:45:10,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:45:10,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:45:10,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:45:10,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:45:10,520 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-11-10 04:45:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:10,602 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2018-11-10 04:45:10,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:45:10,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-10 04:45:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:10,610 INFO L225 Difference]: With dead ends: 63 [2018-11-10 04:45:10,610 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 04:45:10,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 04:45:10,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 04:45:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-11-10 04:45:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 04:45:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-11-10 04:45:10,638 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2018-11-10 04:45:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:10,638 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-11-10 04:45:10,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:45:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-11-10 04:45:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 04:45:10,640 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:10,640 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:10,640 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:10,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:10,640 INFO L82 PathProgramCache]: Analyzing trace with hash -410837410, now seen corresponding path program 1 times [2018-11-10 04:45:10,641 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:10,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:10,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,648 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:10,648 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:10,648 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:10,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:10,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:10,697 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 04:45:10,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:45:10,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:45:10,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:45:10,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:45:10,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:45:10,714 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2018-11-10 04:45:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:10,750 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2018-11-10 04:45:10,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:45:10,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-10 04:45:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:10,751 INFO L225 Difference]: With dead ends: 44 [2018-11-10 04:45:10,751 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 04:45:10,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 04:45:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 04:45:10,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-11-10 04:45:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 04:45:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 04:45:10,755 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2018-11-10 04:45:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:10,755 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 04:45:10,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:45:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 04:45:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 04:45:10,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:10,756 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:10,756 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:10,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 426459746, now seen corresponding path program 1 times [2018-11-10 04:45:10,756 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:10,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:10,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,763 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:10,763 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:10,763 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:10,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:10,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:10,832 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 04:45:10,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:45:10,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:45:10,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:45:10,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:45:10,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:45:10,858 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-10 04:45:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:10,888 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-11-10 04:45:10,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:45:10,889 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-10 04:45:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:10,889 INFO L225 Difference]: With dead ends: 49 [2018-11-10 04:45:10,889 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 04:45:10,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 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 04:45:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 04:45:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2018-11-10 04:45:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 04:45:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2018-11-10 04:45:10,893 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 20 [2018-11-10 04:45:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:10,893 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2018-11-10 04:45:10,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:45:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-11-10 04:45:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-10 04:45:10,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:10,894 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:10,894 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:10,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash 684625184, now seen corresponding path program 1 times [2018-11-10 04:45:10,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:10,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:10,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,899 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:10,899 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:10,899 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:10,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:10,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:10,933 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 04:45:10,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:45:10,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:45:10,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:45:10,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:45:10,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:45:10,949 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2018-11-10 04:45:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:10,970 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2018-11-10 04:45:10,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:45:10,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-10 04:45:10,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:10,971 INFO L225 Difference]: With dead ends: 42 [2018-11-10 04:45:10,971 INFO L226 Difference]: Without dead ends: 29 [2018-11-10 04:45:10,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 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 04:45:10,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-10 04:45:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-11-10 04:45:10,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-10 04:45:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2018-11-10 04:45:10,976 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2018-11-10 04:45:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:10,977 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2018-11-10 04:45:10,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:45:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2018-11-10 04:45:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 04:45:10,977 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:10,978 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:10,978 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:10,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:10,978 INFO L82 PathProgramCache]: Analyzing trace with hash 346054296, now seen corresponding path program 1 times [2018-11-10 04:45:10,978 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:10,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:10,984 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:10,984 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:10,984 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:10,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:11,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:11,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:11,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-11-10 04:45:11,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 04:45:11,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 04:45:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:45:11,059 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2018-11-10 04:45:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:11,091 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-11-10 04:45:11,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 04:45:11,092 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-10 04:45:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:11,092 INFO L225 Difference]: With dead ends: 51 [2018-11-10 04:45:11,092 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 04:45:11,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-10 04:45:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 04:45:11,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-10 04:45:11,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 04:45:11,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-11-10 04:45:11,097 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2018-11-10 04:45:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:11,097 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-10 04:45:11,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 04:45:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-11-10 04:45:11,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 04:45:11,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:11,098 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:11,098 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:11,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:11,098 INFO L82 PathProgramCache]: Analyzing trace with hash -424941854, now seen corresponding path program 1 times [2018-11-10 04:45:11,099 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:11,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:11,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:11,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,105 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:11,105 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:11,106 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:11,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:11,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:11,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:11,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-11-10 04:45:11,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 04:45:11,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 04:45:11,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 04:45:11,229 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2018-11-10 04:45:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:11,301 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2018-11-10 04:45:11,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 04:45:11,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-11-10 04:45:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:11,303 INFO L225 Difference]: With dead ends: 54 [2018-11-10 04:45:11,303 INFO L226 Difference]: Without dead ends: 35 [2018-11-10 04:45:11,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 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 04:45:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-10 04:45:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-10 04:45:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 04:45:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-11-10 04:45:11,307 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2018-11-10 04:45:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:11,307 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-11-10 04:45:11,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 04:45:11,308 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-11-10 04:45:11,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 04:45:11,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:11,311 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:11,311 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:11,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:11,312 INFO L82 PathProgramCache]: Analyzing trace with hash 313852504, now seen corresponding path program 2 times [2018-11-10 04:45:11,312 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:11,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:11,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:11,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,319 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:11,319 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:11,320 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:11,329 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:45:11,339 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:45:11,339 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:11,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:11,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:11,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-11-10 04:45:11,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 04:45:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 04:45:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:45:11,451 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 8 states. [2018-11-10 04:45:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:11,531 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2018-11-10 04:45:11,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:45:11,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-10 04:45:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:11,532 INFO L225 Difference]: With dead ends: 57 [2018-11-10 04:45:11,532 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 04:45:11,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:45:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 04:45:11,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-10 04:45:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 04:45:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-10 04:45:11,536 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2018-11-10 04:45:11,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:11,537 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-10 04:45:11,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 04:45:11,537 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-10 04:45:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-10 04:45:11,538 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:11,538 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:11,538 INFO L424 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:11,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:11,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1970820318, now seen corresponding path program 3 times [2018-11-10 04:45:11,538 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:11,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:11,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:11,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,545 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:11,546 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:11,546 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:11,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:45:11,562 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-10 04:45:11,563 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:11,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:11,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:11,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-10 04:45:11,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:45:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:45:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:45:11,663 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 9 states. [2018-11-10 04:45:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:11,768 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2018-11-10 04:45:11,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:45:11,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-11-10 04:45:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:11,769 INFO L225 Difference]: With dead ends: 60 [2018-11-10 04:45:11,769 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 04:45:11,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:45:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 04:45:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-10 04:45:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 04:45:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-11-10 04:45:11,775 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2018-11-10 04:45:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:11,775 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-11-10 04:45:11,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:45:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-11-10 04:45:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-10 04:45:11,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:11,776 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:11,776 INFO L424 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:11,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash 971729238, now seen corresponding path program 4 times [2018-11-10 04:45:11,776 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:11,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:11,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:11,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:11,783 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:11,784 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:11,784 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:11,793 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:45:11,802 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:45:11,802 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:11,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:11,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:11,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-11-10 04:45:11,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 04:45:11,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 04:45:11,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:45:11,961 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 15 states. [2018-11-10 04:45:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:12,175 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-11-10 04:45:12,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 04:45:12,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 35 [2018-11-10 04:45:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:12,177 INFO L225 Difference]: With dead ends: 60 [2018-11-10 04:45:12,177 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 04:45:12,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:45:12,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 04:45:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-10 04:45:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 04:45:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2018-11-10 04:45:12,184 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 35 [2018-11-10 04:45:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:12,184 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2018-11-10 04:45:12,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 04:45:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2018-11-10 04:45:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 04:45:12,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:12,185 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:12,186 INFO L424 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:12,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:12,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1100809372, now seen corresponding path program 5 times [2018-11-10 04:45:12,186 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:12,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:12,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:12,187 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:12,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:12,192 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:12,193 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:12,193 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:12,206 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:45:12,214 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-10 04:45:12,215 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:12,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:12,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:12,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-10 04:45:12,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:45:12,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:45:12,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:45:12,361 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 11 states. [2018-11-10 04:45:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:12,517 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2018-11-10 04:45:12,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:45:12,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-11-10 04:45:12,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:12,517 INFO L225 Difference]: With dead ends: 78 [2018-11-10 04:45:12,517 INFO L226 Difference]: Without dead ends: 59 [2018-11-10 04:45:12,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-10 04:45:12,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-10 04:45:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-10 04:45:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-10 04:45:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2018-11-10 04:45:12,524 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 38 [2018-11-10 04:45:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:12,524 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2018-11-10 04:45:12,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:45:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2018-11-10 04:45:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 04:45:12,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:12,525 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:12,525 INFO L424 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:12,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1481976096, now seen corresponding path program 6 times [2018-11-10 04:45:12,526 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:12,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:12,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:12,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:12,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:12,532 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:12,532 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:12,532 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:12,540 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:45:12,547 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2018-11-10 04:45:12,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:12,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-11-10 04:45:12,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:45:12,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 04:45:12,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 04:45:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 04:45:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:45:12,571 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 3 states. [2018-11-10 04:45:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:12,577 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2018-11-10 04:45:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 04:45:12,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-10 04:45:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:12,580 INFO L225 Difference]: With dead ends: 76 [2018-11-10 04:45:12,580 INFO L226 Difference]: Without dead ends: 63 [2018-11-10 04:45:12,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 04:45:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-10 04:45:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2018-11-10 04:45:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-10 04:45:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-11-10 04:45:12,586 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 38 [2018-11-10 04:45:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:12,587 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-11-10 04:45:12,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 04:45:12,587 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-11-10 04:45:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 04:45:12,588 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:12,588 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:12,588 INFO L424 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:12,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:12,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2111926622, now seen corresponding path program 7 times [2018-11-10 04:45:12,588 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:12,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:12,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:12,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:12,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:12,594 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:12,594 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:12,594 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:12,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:12,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:12,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:12,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-11-10 04:45:12,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:45:12,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:45:12,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:45:12,789 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 11 states. [2018-11-10 04:45:14,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:14,369 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2018-11-10 04:45:14,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:45:14,370 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-11-10 04:45:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:14,370 INFO L225 Difference]: With dead ends: 82 [2018-11-10 04:45:14,371 INFO L226 Difference]: Without dead ends: 59 [2018-11-10 04:45:14,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:45:14,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-10 04:45:14,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-11-10 04:45:14,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-10 04:45:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2018-11-10 04:45:14,377 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 38 [2018-11-10 04:45:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:14,377 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2018-11-10 04:45:14,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:45:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2018-11-10 04:45:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-10 04:45:14,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:14,378 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 3, 2, 2, 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 04:45:14,378 INFO L424 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:14,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash 359934615, now seen corresponding path program 1 times [2018-11-10 04:45:14,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:14,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:14,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:14,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:14,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:14,384 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:14,384 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:14,384 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:14,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:45:14,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 04:45:14,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:14,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-11-10 04:45:14,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 04:45:14,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 04:45:14,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-10 04:45:14,543 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 15 states. [2018-11-10 04:45:14,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:14,702 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2018-11-10 04:45:14,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:45:14,702 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-11-10 04:45:14,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:14,703 INFO L225 Difference]: With dead ends: 65 [2018-11-10 04:45:14,703 INFO L226 Difference]: Without dead ends: 49 [2018-11-10 04:45:14,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:45:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-10 04:45:14,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-10 04:45:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 04:45:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-10 04:45:14,707 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 40 [2018-11-10 04:45:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:14,707 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-10 04:45:14,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-10 04:45:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-10 04:45:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:45:14,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:14,708 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:14,708 INFO L424 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:14,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:14,708 INFO L82 PathProgramCache]: Analyzing trace with hash -659809836, now seen corresponding path program 8 times [2018-11-10 04:45:14,708 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:14,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:14,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:14,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:45:14,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:14,713 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:14,713 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:14,713 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:14,719 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 04:45:14,727 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:45:14,727 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:14,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-10 04:45:14,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:14,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-10 04:45:14,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:45:14,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:45:14,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:45:14,862 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2018-11-10 04:45:14,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:14,948 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-10 04:45:14,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:45:14,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-11-10 04:45:14,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:14,950 INFO L225 Difference]: With dead ends: 67 [2018-11-10 04:45:14,950 INFO L226 Difference]: Without dead ends: 46 [2018-11-10 04:45:14,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:45:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-10 04:45:14,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-11-10 04:45:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-10 04:45:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2018-11-10 04:45:14,956 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 41 [2018-11-10 04:45:14,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:14,956 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2018-11-10 04:45:14,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:45:14,956 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2018-11-10 04:45:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-10 04:45:14,956 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:14,957 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:14,957 INFO L424 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:14,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:14,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1237040488, now seen corresponding path program 9 times [2018-11-10 04:45:14,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:14,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:14,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:14,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:14,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:14,971 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:14,971 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:14,971 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:14,979 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 04:45:14,992 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-10 04:45:14,993 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:14,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-10 04:45:15,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:15,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-11-10 04:45:15,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:45:15,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:45:15,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:45:15,061 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 9 states. [2018-11-10 04:45:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:15,409 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-10 04:45:15,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:45:15,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-11-10 04:45:15,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:15,411 INFO L225 Difference]: With dead ends: 67 [2018-11-10 04:45:15,411 INFO L226 Difference]: Without dead ends: 54 [2018-11-10 04:45:15,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:45:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-10 04:45:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2018-11-10 04:45:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 04:45:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-10 04:45:15,416 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 41 [2018-11-10 04:45:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:15,416 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-10 04:45:15,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:45:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-10 04:45:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-10 04:45:15,419 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:15,419 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:15,420 INFO L424 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:15,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:15,420 INFO L82 PathProgramCache]: Analyzing trace with hash 634225378, now seen corresponding path program 10 times [2018-11-10 04:45:15,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:15,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:15,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:15,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:15,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:15,428 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:15,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:15,429 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:15,446 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-10 04:45:15,477 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-10 04:45:15,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:15,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:15,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:15,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-10 04:45:15,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 04:45:15,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 04:45:15,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:45:15,935 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 13 states. [2018-11-10 04:45:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:28,238 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2018-11-10 04:45:28,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:45:28,239 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-11-10 04:45:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:28,239 INFO L225 Difference]: With dead ends: 70 [2018-11-10 04:45:28,239 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 04:45:28,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=55, Invalid=284, Unknown=3, NotChecked=0, Total=342 [2018-11-10 04:45:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 04:45:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2018-11-10 04:45:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 04:45:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-11-10 04:45:28,245 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 44 [2018-11-10 04:45:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:28,245 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-11-10 04:45:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 04:45:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-11-10 04:45:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-10 04:45:28,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:28,246 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:28,246 INFO L424 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:28,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash -376891872, now seen corresponding path program 11 times [2018-11-10 04:45:28,247 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:28,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:28,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:28,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:28,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:28,252 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:28,252 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:28,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:28,269 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-10 04:45:28,280 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-11-10 04:45:28,280 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:28,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:45:28,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:28,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-11-10 04:45:28,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 04:45:28,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 04:45:28,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-10 04:45:28,471 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 13 states. [2018-11-10 04:45:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:30,113 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2018-11-10 04:45:30,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 04:45:30,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-11-10 04:45:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:30,114 INFO L225 Difference]: With dead ends: 78 [2018-11-10 04:45:30,114 INFO L226 Difference]: Without dead ends: 55 [2018-11-10 04:45:30,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-11-10 04:45:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-10 04:45:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-10 04:45:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-10 04:45:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2018-11-10 04:45:30,119 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 44 [2018-11-10 04:45:30,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:30,119 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2018-11-10 04:45:30,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 04:45:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2018-11-10 04:45:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-10 04:45:30,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:45:30,120 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:45:30,120 INFO L424 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:45:30,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:45:30,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1159862696, now seen corresponding path program 12 times [2018-11-10 04:45:30,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:45:30,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:45:30,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:30,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:45:30,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:45:30,125 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-10 04:45:30,125 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-10 04:45:30,125 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-10 04:45:30,138 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-10 04:45:30,150 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-10 04:45:30,150 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:45:30,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:45:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 102 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-10 04:45:30,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:45:30,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-11-10 04:45:30,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 04:45:30,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 04:45:30,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:45:30,274 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 12 states. [2018-11-10 04:45:30,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:45:30,477 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2018-11-10 04:45:30,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:45:30,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2018-11-10 04:45:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:45:30,478 INFO L225 Difference]: With dead ends: 58 [2018-11-10 04:45:30,478 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 04:45:30,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2018-11-10 04:45:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 04:45:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 04:45:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 04:45:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 04:45:30,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-11-10 04:45:30,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:45:30,479 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 04:45:30,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 04:45:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 04:45:30,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 04:45:30,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 04:45:55,411 WARN L179 SmtUtils]: Spent 24.81 s on a formula simplification. DAG size of input: 212 DAG size of output: 99 [2018-11-10 04:45:55,413 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-10 04:45:55,413 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:45:55,413 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 04:45:55,413 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 04:45:55,413 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 04:45:55,413 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 04:45:55,413 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 30 46) the Hoare annotation is: true [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 30 46) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L421 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (and (= (* 2 main_~g~0) 18) (= main_~y~0 18) (= (* 7 main_~g~0) main_~x~0)) [2018-11-10 04:45:55,414 INFO L421 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (and (= main_~y~0 18) (= main_~x~0 63) (= (* 7 main_~g~0) main_~x~0)) [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 30 46) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L421 ceAbstractionStarter]: At program point L41-1(line 41) the Hoare annotation is: (and (= main_~y~0 18) (= main_~x~0 63) (= (* 7 main_~g~0) main_~x~0)) [2018-11-10 04:45:55,414 INFO L421 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: (and (= main_~y~0 18) (= main_~x~0 63)) [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point gcd_testEXIT(lines 10 27) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 25) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2018-11-10 04:45:55,414 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 11 27) no Hoare annotation was computed. [2018-11-10 04:45:55,415 INFO L428 ceAbstractionStarter]: At program point gcd_testENTRY(lines 10 27) the Hoare annotation is: true [2018-11-10 04:45:55,415 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-10 04:45:55,415 INFO L421 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (let ((.cse0 (= gcd_test_~b |gcd_test_#in~b|)) (.cse2 (<= 1 gcd_test_~a))) (or (and (= (+ gcd_test_~b (* 2 gcd_test_~a)) |gcd_test_#in~b|) (exists ((v_gcd_test_~b_30 Int) (v_gcd_test_~a_44 Int)) (and (<= (+ gcd_test_~b (* 2 v_gcd_test_~a_44)) v_gcd_test_~b_30) (<= v_gcd_test_~a_44 (+ gcd_test_~b gcd_test_~a)) (<= v_gcd_test_~b_30 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ (* 3 v_gcd_test_~b_30) v_gcd_test_~a_44))))) (let ((.cse1 (+ (* 2 gcd_test_~b) gcd_test_~a))) (and .cse0 (<= |gcd_test_#in~a| .cse1) (<= .cse1 |gcd_test_#in~a|))) (and .cse2 (exists ((v_prenex_1 Int) (v_gcd_test_~b_34 Int)) (and (<= (+ (* 2 v_prenex_1) gcd_test_~b 1) v_gcd_test_~b_34) (<= v_gcd_test_~b_34 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ v_prenex_1 (* 3 v_gcd_test_~b_34)))))) (let ((.cse3 (+ gcd_test_~b gcd_test_~a))) (and .cse0 (<= |gcd_test_#in~a| .cse3) (<= .cse3 |gcd_test_#in~a|))) (and (= (+ gcd_test_~a (* 3 |gcd_test_#in~b|)) |gcd_test_#in~a|) (<= (+ (* 3 gcd_test_~b) gcd_test_~a) |gcd_test_#in~a|) (<= |gcd_test_#in~b| gcd_test_~b)) (exists ((v_gcd_test_~b_30 Int) (v_gcd_test_~a_44 Int)) (let ((.cse4 (* 3 v_gcd_test_~b_30))) (and (<= (* 8 v_gcd_test_~a_44) .cse4) (<= v_gcd_test_~b_30 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ .cse4 v_gcd_test_~a_44))))) (and .cse0 (= gcd_test_~a |gcd_test_#in~a|)) (and (exists ((v_prenex_1 Int) (v_gcd_test_~b_34 Int)) (and (<= v_gcd_test_~b_34 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ v_prenex_1 (* 3 v_gcd_test_~b_34))) (<= (+ (* 2 v_prenex_1) gcd_test_~b) v_gcd_test_~b_34))) .cse2 (or (not (= gcd_test_~b 0)) (exists ((gcd_test_~a Int)) (= |gcd_test_#in~b| (+ (* 3 gcd_test_~b) (* 5 gcd_test_~a)))))) (exists ((v_gcd_test_~b_23 Int)) (and (<= |gcd_test_#in~b| v_gcd_test_~b_23) (<= (+ (* 7 v_gcd_test_~b_23) 1) (* 2 |gcd_test_#in~a|)))) (<= |gcd_test_#in~a| (* 2 |gcd_test_#in~b|)) (and (exists ((v_gcd_test_~b_23 Int)) (and (<= (+ gcd_test_~a (* 3 v_gcd_test_~b_23)) |gcd_test_#in~a|) (<= |gcd_test_#in~b| v_gcd_test_~b_23) (<= v_gcd_test_~b_23 (+ gcd_test_~b gcd_test_~a)))) (exists ((v_gcd_test_~b_34 Int)) (and (<= (+ gcd_test_~b gcd_test_~a) v_gcd_test_~b_34) (<= v_gcd_test_~b_34 |gcd_test_#in~b|) (<= |gcd_test_#in~a| (+ gcd_test_~a (* 3 v_gcd_test_~b_34)))))))) [2018-11-10 04:45:55,415 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-11-10 04:45:55,415 INFO L425 ceAbstractionStarter]: For program point L12-2(lines 11 27) no Hoare annotation was computed. [2018-11-10 04:45:55,415 INFO L425 ceAbstractionStarter]: For program point gcd_testFINAL(lines 10 27) no Hoare annotation was computed. [2018-11-10 04:45:55,420 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,421 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,421 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,421 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,422 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,423 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,424 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,429 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,429 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,429 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,430 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,430 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,430 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,430 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,430 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,430 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,431 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,431 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,431 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,431 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,431 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,432 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,432 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,432 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,432 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,432 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,432 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,433 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,434 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,434 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,434 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:45:55 BoogieIcfgContainer [2018-11-10 04:45:55,436 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:45:55,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:45:55,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:45:55,436 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:45:55,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:45:10" (3/4) ... [2018-11-10 04:45:55,439 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 04:45:55,443 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 04:45:55,443 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 04:45:55,443 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-10 04:45:55,443 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure gcd_test [2018-11-10 04:45:55,446 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-10 04:45:55,446 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-10 04:45:55,446 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 04:45:55,462 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((b + 2 * a == \old(b) && (\exists v_gcd_test_~b_30 : int, v_gcd_test_~a_44 : int :: ((b + 2 * v_gcd_test_~a_44 <= v_gcd_test_~b_30 && v_gcd_test_~a_44 <= b + a) && v_gcd_test_~b_30 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_30 + v_gcd_test_~a_44)) || ((b == \old(b) && \old(a) <= 2 * b + a) && 2 * b + a <= \old(a))) || (1 <= a && (\exists v_prenex_1 : int, v_gcd_test_~b_34 : int :: (2 * v_prenex_1 + b + 1 <= v_gcd_test_~b_34 && v_gcd_test_~b_34 <= \old(b)) && \old(a) <= v_prenex_1 + 3 * v_gcd_test_~b_34))) || ((b == \old(b) && \old(a) <= b + a) && b + a <= \old(a))) || ((a + 3 * \old(b) == \old(a) && 3 * b + a <= \old(a)) && \old(b) <= b)) || (\exists v_gcd_test_~b_30 : int, v_gcd_test_~a_44 : int :: (8 * v_gcd_test_~a_44 <= 3 * v_gcd_test_~b_30 && v_gcd_test_~b_30 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_30 + v_gcd_test_~a_44)) || (b == \old(b) && a == \old(a))) || (((\exists v_prenex_1 : int, v_gcd_test_~b_34 : int :: (v_gcd_test_~b_34 <= \old(b) && \old(a) <= v_prenex_1 + 3 * v_gcd_test_~b_34) && 2 * v_prenex_1 + b <= v_gcd_test_~b_34) && 1 <= a) && (!(b == 0) || (\exists gcd_test_~a : int :: \old(b) == 3 * b + 5 * gcd_test_~a)))) || (\exists v_gcd_test_~b_23 : int :: \old(b) <= v_gcd_test_~b_23 && 7 * v_gcd_test_~b_23 + 1 <= 2 * \old(a))) || \old(a) <= 2 * \old(b)) || ((\exists v_gcd_test_~b_23 : int :: (a + 3 * v_gcd_test_~b_23 <= \old(a) && \old(b) <= v_gcd_test_~b_23) && v_gcd_test_~b_23 <= b + a) && (\exists v_gcd_test_~b_34 : int :: (b + a <= v_gcd_test_~b_34 && v_gcd_test_~b_34 <= \old(b)) && \old(a) <= a + 3 * v_gcd_test_~b_34)) [2018-11-10 04:45:55,473 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b154a2cc-2243-4026-bdb2-cdba7d20ee0b/bin-2019/uautomizer/witness.graphml [2018-11-10 04:45:55,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:45:55,473 INFO L168 Benchmark]: Toolchain (without parser) took 45520.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 180.9 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-11-10 04:45:55,474 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:45:55,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:45:55,475 INFO L168 Benchmark]: Boogie Preprocessor took 16.08 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:45:55,475 INFO L168 Benchmark]: RCFGBuilder took 171.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:45:55,475 INFO L168 Benchmark]: TraceAbstraction took 45151.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.9 MB). Peak memory consumption was 295.2 MB. Max. memory is 11.5 GB. [2018-11-10 04:45:55,475 INFO L168 Benchmark]: Witness Printer took 36.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:45:55,479 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.08 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 171.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -175.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 45151.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 44.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.9 MB). Peak memory consumption was 295.2 MB. Max. memory is 11.5 GB. * Witness Printer took 36.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2018-11-10 04:45:55,483 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,483 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,483 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,484 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-10 04:45:55,485 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,486 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,487 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,487 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,487 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,487 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,488 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,488 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,488 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,488 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,488 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,488 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_30,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~a_44,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,489 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_1,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[gcd_test_~a,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,490 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,491 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,491 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_23,QUANTIFIED] [2018-11-10 04:45:55,491 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,491 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] [2018-11-10 04:45:55,491 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_gcd_test_~b_34,QUANTIFIED] Derived loop invariant: ((((((((((b + 2 * a == \old(b) && (\exists v_gcd_test_~b_30 : int, v_gcd_test_~a_44 : int :: ((b + 2 * v_gcd_test_~a_44 <= v_gcd_test_~b_30 && v_gcd_test_~a_44 <= b + a) && v_gcd_test_~b_30 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_30 + v_gcd_test_~a_44)) || ((b == \old(b) && \old(a) <= 2 * b + a) && 2 * b + a <= \old(a))) || (1 <= a && (\exists v_prenex_1 : int, v_gcd_test_~b_34 : int :: (2 * v_prenex_1 + b + 1 <= v_gcd_test_~b_34 && v_gcd_test_~b_34 <= \old(b)) && \old(a) <= v_prenex_1 + 3 * v_gcd_test_~b_34))) || ((b == \old(b) && \old(a) <= b + a) && b + a <= \old(a))) || ((a + 3 * \old(b) == \old(a) && 3 * b + a <= \old(a)) && \old(b) <= b)) || (\exists v_gcd_test_~b_30 : int, v_gcd_test_~a_44 : int :: (8 * v_gcd_test_~a_44 <= 3 * v_gcd_test_~b_30 && v_gcd_test_~b_30 <= \old(b)) && \old(a) <= 3 * v_gcd_test_~b_30 + v_gcd_test_~a_44)) || (b == \old(b) && a == \old(a))) || (((\exists v_prenex_1 : int, v_gcd_test_~b_34 : int :: (v_gcd_test_~b_34 <= \old(b) && \old(a) <= v_prenex_1 + 3 * v_gcd_test_~b_34) && 2 * v_prenex_1 + b <= v_gcd_test_~b_34) && 1 <= a) && (!(b == 0) || (\exists gcd_test_~a : int :: \old(b) == 3 * b + 5 * gcd_test_~a)))) || (\exists v_gcd_test_~b_23 : int :: \old(b) <= v_gcd_test_~b_23 && 7 * v_gcd_test_~b_23 + 1 <= 2 * \old(a))) || \old(a) <= 2 * \old(b)) || ((\exists v_gcd_test_~b_23 : int :: (a + 3 * v_gcd_test_~b_23 <= \old(a) && \old(b) <= v_gcd_test_~b_23) && v_gcd_test_~b_23 <= b + a) && (\exists v_gcd_test_~b_34 : int :: (b + a <= v_gcd_test_~b_34 && v_gcd_test_~b_34 <= \old(b)) && \old(a) <= a + 3 * v_gcd_test_~b_34)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. SAFE Result, 45.0s OverallTime, 18 OverallIterations, 10 TraceHistogramMax, 17.2s AutomataDifference, 0.0s DeadEndRemovalTime, 24.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 445 SDtfs, 226 SDslu, 2547 SDs, 0 SdLazy, 2239 SolverSat, 63 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 616 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=10, 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: 0.0s AutomataMinimizationTime, 18 MinimizatonAttempts, 34 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 61 PreInvPairs, 98 NumberOfFragments, 276 HoareAnnotationTreeSize, 61 FomulaSimplifications, 2081 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 606 FormulaSimplificationTreeSizeReductionInter, 24.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 590 NumberOfCodeBlocks, 566 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 572 ConstructedInterpolants, 105 QuantifiedInterpolants, 156752 SizeOfPredicates, 60 NumberOfNonLiveVariables, 1222 ConjunctsInSsa, 225 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 114/783 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...