./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e6092b6e2bef07c2401a6d2b7c5ee309bc5dbc34 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 04:12:12,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 04:12:12,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 04:12:12,502 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 04:12:12,502 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 04:12:12,503 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 04:12:12,503 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 04:12:12,505 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 04:12:12,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 04:12:12,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 04:12:12,508 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 04:12:12,508 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 04:12:12,509 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 04:12:12,509 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 04:12:12,510 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 04:12:12,511 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 04:12:12,512 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 04:12:12,513 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 04:12:12,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 04:12:12,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 04:12:12,517 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 04:12:12,518 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 04:12:12,520 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 04:12:12,520 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 04:12:12,520 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 04:12:12,521 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 04:12:12,522 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 04:12:12,522 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 04:12:12,523 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 04:12:12,524 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 04:12:12,524 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 04:12:12,524 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 04:12:12,525 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 04:12:12,525 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 04:12:12,525 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 04:12:12,525 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 04:12:12,526 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 04:12:12,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 04:12:12,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 04:12:12,534 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 04:12:12,534 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 04:12:12,534 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 04:12:12,535 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 04:12:12,535 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 04:12:12,535 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 04:12:12,535 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 04:12:12,535 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 04:12:12,535 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 04:12:12,535 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 04:12:12,536 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 04:12:12,536 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 04:12:12,537 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 04:12:12,537 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 04:12:12,537 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_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6092b6e2bef07c2401a6d2b7c5ee309bc5dbc34 [2018-11-23 04:12:12,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 04:12:12,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 04:12:12,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 04:12:12,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 04:12:12,581 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 04:12:12,582 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c [2018-11-23 04:12:12,636 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/data/5db200335/363de72124e041f4ac30c8fe368e295d/FLAG9ca8174a8 [2018-11-23 04:12:12,955 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 04:12:12,955 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c [2018-11-23 04:12:12,961 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/data/5db200335/363de72124e041f4ac30c8fe368e295d/FLAG9ca8174a8 [2018-11-23 04:12:12,974 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/data/5db200335/363de72124e041f4ac30c8fe368e295d [2018-11-23 04:12:12,977 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 04:12:12,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 04:12:12,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 04:12:12,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 04:12:12,983 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 04:12:12,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:12" (1/1) ... [2018-11-23 04:12:12,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787be1fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:12, skipping insertion in model container [2018-11-23 04:12:12,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:12:12" (1/1) ... [2018-11-23 04:12:12,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 04:12:13,012 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 04:12:13,172 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:12:13,175 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 04:12:13,191 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 04:12:13,202 INFO L195 MainTranslator]: Completed translation [2018-11-23 04:12:13,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13 WrapperNode [2018-11-23 04:12:13,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 04:12:13,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 04:12:13,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 04:12:13,204 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 04:12:13,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 04:12:13,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 04:12:13,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 04:12:13,220 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 04:12:13,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... [2018-11-23 04:12:13,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 04:12:13,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 04:12:13,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 04:12:13,234 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 04:12:13,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/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 [2018-11-23 04:12:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 04:12:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 04:12:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 04:12:13,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 04:12:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 04:12:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 04:12:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-11-23 04:12:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-11-23 04:12:13,313 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-11-23 04:12:13,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-11-23 04:12:13,426 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 04:12:13,426 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 04:12:13,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:13 BoogieIcfgContainer [2018-11-23 04:12:13,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 04:12:13,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 04:12:13,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 04:12:13,430 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 04:12:13,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:12:12" (1/3) ... [2018-11-23 04:12:13,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b151780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:13, skipping insertion in model container [2018-11-23 04:12:13,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:12:13" (2/3) ... [2018-11-23 04:12:13,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b151780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:12:13, skipping insertion in model container [2018-11-23 04:12:13,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:13" (3/3) ... [2018-11-23 04:12:13,432 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5_true-unreach-call_true-termination.c [2018-11-23 04:12:13,440 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 04:12:13,445 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 04:12:13,458 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 04:12:13,482 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 04:12:13,482 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 04:12:13,482 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 04:12:13,482 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 04:12:13,483 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 04:12:13,483 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 04:12:13,483 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 04:12:13,483 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 04:12:13,483 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 04:12:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-11-23 04:12:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 04:12:13,504 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:13,505 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:13,507 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:13,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:13,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-11-23 04:12:13,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:13,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:13,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:13,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:13,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:12:13,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:12:13,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 04:12:13,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:12:13,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:12:13,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:12:13,674 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-11-23 04:12:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:13,762 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-11-23 04:12:13,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 04:12:13,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 04:12:13,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:13,770 INFO L225 Difference]: With dead ends: 44 [2018-11-23 04:12:13,771 INFO L226 Difference]: Without dead ends: 30 [2018-11-23 04:12:13,773 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:12:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-23 04:12:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-23 04:12:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 04:12:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-23 04:12:13,806 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-11-23 04:12:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:13,806 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-23 04:12:13,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:12:13,807 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 04:12:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 04:12:13,808 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:13,808 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:13,808 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:13,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:13,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-11-23 04:12:13,809 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:13,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:13,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:13,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:13,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 04:12:13,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 04:12:13,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 04:12:13,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 04:12:13,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 04:12:13,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 04:12:13,848 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-11-23 04:12:13,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:13,910 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-11-23 04:12:13,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 04:12:13,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-23 04:12:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:13,912 INFO L225 Difference]: With dead ends: 36 [2018-11-23 04:12:13,912 INFO L226 Difference]: Without dead ends: 32 [2018-11-23 04:12:13,913 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 04:12:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-23 04:12:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-23 04:12:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 04:12:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-11-23 04:12:13,918 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-11-23 04:12:13,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:13,918 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-11-23 04:12:13,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 04:12:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-11-23 04:12:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 04:12:13,919 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:13,920 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:13,920 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:13,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:13,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-11-23 04:12:13,920 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:13,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:13,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:13,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:13,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 04:12:14,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:14,003 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:14,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 04:12:14,116 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:14,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-11-23 04:12:14,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 04:12:14,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 04:12:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-23 04:12:14,117 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2018-11-23 04:12:14,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:14,282 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2018-11-23 04:12:14,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 04:12:14,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-11-23 04:12:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:14,284 INFO L225 Difference]: With dead ends: 58 [2018-11-23 04:12:14,284 INFO L226 Difference]: Without dead ends: 34 [2018-11-23 04:12:14,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-23 04:12:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-23 04:12:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-11-23 04:12:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-23 04:12:14,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-11-23 04:12:14,294 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2018-11-23 04:12:14,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:14,295 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-11-23 04:12:14,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 04:12:14,295 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-11-23 04:12:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 04:12:14,296 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:14,298 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:14,298 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:14,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2018-11-23 04:12:14,299 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:14,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:14,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:14,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 04:12:14,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:14,376 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:14,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 04:12:14,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:14,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 04:12:14,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 04:12:14,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 04:12:14,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 04:12:14,425 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2018-11-23 04:12:14,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:14,488 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2018-11-23 04:12:14,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 04:12:14,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-23 04:12:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:14,489 INFO L225 Difference]: With dead ends: 43 [2018-11-23 04:12:14,489 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 04:12:14,489 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-23 04:12:14,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 04:12:14,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-11-23 04:12:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-23 04:12:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-23 04:12:14,494 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2018-11-23 04:12:14,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:14,495 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-23 04:12:14,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 04:12:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2018-11-23 04:12:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 04:12:14,496 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:14,496 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:14,496 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:14,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:14,496 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-11-23 04:12:14,496 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:14,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:14,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:14,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 04:12:14,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:14,555 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:14,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:14,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 04:12:14,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:14,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2018-11-23 04:12:14,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 04:12:14,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 04:12:14,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-23 04:12:14,662 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 10 states. [2018-11-23 04:12:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:14,826 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2018-11-23 04:12:14,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 04:12:14,827 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2018-11-23 04:12:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:14,828 INFO L225 Difference]: With dead ends: 70 [2018-11-23 04:12:14,828 INFO L226 Difference]: Without dead ends: 39 [2018-11-23 04:12:14,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-23 04:12:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-23 04:12:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-23 04:12:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-23 04:12:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-23 04:12:14,836 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2018-11-23 04:12:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:14,836 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-23 04:12:14,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 04:12:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-11-23 04:12:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 04:12:14,837 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:14,837 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:14,837 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:14,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:14,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2018-11-23 04:12:14,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:14,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:14,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:14,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-23 04:12:14,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:14,889 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:14,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:14,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-23 04:12:14,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:14,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-11-23 04:12:14,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 04:12:14,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 04:12:14,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-23 04:12:14,963 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 10 states. [2018-11-23 04:12:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:15,059 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2018-11-23 04:12:15,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 04:12:15,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-11-23 04:12:15,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:15,061 INFO L225 Difference]: With dead ends: 61 [2018-11-23 04:12:15,061 INFO L226 Difference]: Without dead ends: 57 [2018-11-23 04:12:15,062 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:12:15,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-23 04:12:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2018-11-23 04:12:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-23 04:12:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-11-23 04:12:15,071 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 40 [2018-11-23 04:12:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:15,071 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-11-23 04:12:15,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 04:12:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-11-23 04:12:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-23 04:12:15,073 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:15,073 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:15,074 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:15,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:15,074 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2018-11-23 04:12:15,074 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:15,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:15,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:15,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:15,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-23 04:12:15,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:15,146 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:15,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:15,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-23 04:12:15,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:15,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-11-23 04:12:15,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 04:12:15,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 04:12:15,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-23 04:12:15,262 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 10 states. [2018-11-23 04:12:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:15,372 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2018-11-23 04:12:15,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 04:12:15,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-11-23 04:12:15,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:15,374 INFO L225 Difference]: With dead ends: 71 [2018-11-23 04:12:15,374 INFO L226 Difference]: Without dead ends: 67 [2018-11-23 04:12:15,375 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:12:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-23 04:12:15,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2018-11-23 04:12:15,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-23 04:12:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2018-11-23 04:12:15,388 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 54 [2018-11-23 04:12:15,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:15,388 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2018-11-23 04:12:15,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 04:12:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2018-11-23 04:12:15,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-23 04:12:15,390 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:15,391 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:15,391 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:15,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:15,391 INFO L82 PathProgramCache]: Analyzing trace with hash 671849284, now seen corresponding path program 2 times [2018-11-23 04:12:15,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:15,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:15,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:15,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:15,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-23 04:12:15,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:15,490 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:15,498 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 04:12:15,515 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 04:12:15,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:12:15,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-11-23 04:12:15,594 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:15,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-11-23 04:12:15,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 04:12:15,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 04:12:15,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-11-23 04:12:15,596 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 14 states. [2018-11-23 04:12:15,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:15,856 INFO L93 Difference]: Finished difference Result 127 states and 238 transitions. [2018-11-23 04:12:15,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-23 04:12:15,856 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2018-11-23 04:12:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:15,857 INFO L225 Difference]: With dead ends: 127 [2018-11-23 04:12:15,857 INFO L226 Difference]: Without dead ends: 84 [2018-11-23 04:12:15,858 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2018-11-23 04:12:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-23 04:12:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2018-11-23 04:12:15,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-23 04:12:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 101 transitions. [2018-11-23 04:12:15,869 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 101 transitions. Word has length 80 [2018-11-23 04:12:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:15,870 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 101 transitions. [2018-11-23 04:12:15,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 04:12:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 101 transitions. [2018-11-23 04:12:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-23 04:12:15,872 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:15,873 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:15,873 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:15,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:15,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1162571493, now seen corresponding path program 1 times [2018-11-23 04:12:15,873 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:15,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:15,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:15,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:12:15,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 74 proven. 14 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-23 04:12:15,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:15,961 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:15,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:15,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:16,063 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-23 04:12:16,079 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:16,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2018-11-23 04:12:16,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 04:12:16,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 04:12:16,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:12:16,080 INFO L87 Difference]: Start difference. First operand 65 states and 101 transitions. Second operand 15 states. [2018-11-23 04:12:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:16,400 INFO L93 Difference]: Finished difference Result 180 states and 349 transitions. [2018-11-23 04:12:16,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 04:12:16,401 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 95 [2018-11-23 04:12:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:16,403 INFO L225 Difference]: With dead ends: 180 [2018-11-23 04:12:16,403 INFO L226 Difference]: Without dead ends: 115 [2018-11-23 04:12:16,408 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2018-11-23 04:12:16,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-11-23 04:12:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2018-11-23 04:12:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-23 04:12:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2018-11-23 04:12:16,425 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 95 [2018-11-23 04:12:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:16,425 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2018-11-23 04:12:16,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 04:12:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2018-11-23 04:12:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-23 04:12:16,427 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:16,427 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:16,427 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:16,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1504181040, now seen corresponding path program 2 times [2018-11-23 04:12:16,428 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:16,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:16,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:16,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:16,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 40 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-11-23 04:12:16,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:16,514 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:16,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 04:12:16,539 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 04:12:16,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:12:16,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-23 04:12:16,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:16,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2018-11-23 04:12:16,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 04:12:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 04:12:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:12:16,600 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand 15 states. [2018-11-23 04:12:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:16,978 INFO L93 Difference]: Finished difference Result 253 states and 504 transitions. [2018-11-23 04:12:16,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-23 04:12:16,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-11-23 04:12:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:16,980 INFO L225 Difference]: With dead ends: 253 [2018-11-23 04:12:16,981 INFO L226 Difference]: Without dead ends: 166 [2018-11-23 04:12:16,981 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2018-11-23 04:12:16,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-11-23 04:12:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2018-11-23 04:12:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-23 04:12:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 275 transitions. [2018-11-23 04:12:16,998 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 275 transitions. Word has length 82 [2018-11-23 04:12:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:16,998 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 275 transitions. [2018-11-23 04:12:16,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 04:12:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 275 transitions. [2018-11-23 04:12:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-23 04:12:17,001 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:17,001 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:17,001 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:17,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:17,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2123215105, now seen corresponding path program 1 times [2018-11-23 04:12:17,001 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:17,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:17,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:17,002 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:12:17,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-23 04:12:17,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:17,094 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:17,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:17,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 67 proven. 73 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-11-23 04:12:17,228 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:17,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2018-11-23 04:12:17,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-23 04:12:17,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-23 04:12:17,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-11-23 04:12:17,229 INFO L87 Difference]: Start difference. First operand 154 states and 275 transitions. Second operand 17 states. [2018-11-23 04:12:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:17,511 INFO L93 Difference]: Finished difference Result 339 states and 721 transitions. [2018-11-23 04:12:17,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 04:12:17,512 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 122 [2018-11-23 04:12:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:17,514 INFO L225 Difference]: With dead ends: 339 [2018-11-23 04:12:17,514 INFO L226 Difference]: Without dead ends: 138 [2018-11-23 04:12:17,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2018-11-23 04:12:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-23 04:12:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2018-11-23 04:12:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-23 04:12:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 202 transitions. [2018-11-23 04:12:17,526 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 202 transitions. Word has length 122 [2018-11-23 04:12:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:17,526 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 202 transitions. [2018-11-23 04:12:17,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-23 04:12:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 202 transitions. [2018-11-23 04:12:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-23 04:12:17,528 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:17,528 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:17,528 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:17,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:17,529 INFO L82 PathProgramCache]: Analyzing trace with hash -878903457, now seen corresponding path program 2 times [2018-11-23 04:12:17,529 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:17,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:17,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:17,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:17,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:17,616 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 89 proven. 22 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-23 04:12:17,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:17,617 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:17,623 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 04:12:17,650 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 04:12:17,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:12:17,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 87 proven. 23 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-11-23 04:12:17,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:17,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2018-11-23 04:12:17,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 04:12:17,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 04:12:17,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-23 04:12:17,700 INFO L87 Difference]: Start difference. First operand 132 states and 202 transitions. Second operand 12 states. [2018-11-23 04:12:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:17,776 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2018-11-23 04:12:17,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 04:12:17,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2018-11-23 04:12:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:17,778 INFO L225 Difference]: With dead ends: 150 [2018-11-23 04:12:17,778 INFO L226 Difference]: Without dead ends: 146 [2018-11-23 04:12:17,779 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-11-23 04:12:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-23 04:12:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 138. [2018-11-23 04:12:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-11-23 04:12:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 214 transitions. [2018-11-23 04:12:17,788 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 214 transitions. Word has length 122 [2018-11-23 04:12:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:17,788 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 214 transitions. [2018-11-23 04:12:17,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 04:12:17,788 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 214 transitions. [2018-11-23 04:12:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-23 04:12:17,790 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:17,790 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:17,790 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:17,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1540036056, now seen corresponding path program 3 times [2018-11-23 04:12:17,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:17,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:17,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:17,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:12:17,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-23 04:12:18,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:18,052 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:18,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 04:12:18,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 04:12:18,091 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:12:18,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-23 04:12:18,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:18,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2018-11-23 04:12:18,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-23 04:12:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-23 04:12:18,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-11-23 04:12:18,328 INFO L87 Difference]: Start difference. First operand 138 states and 214 transitions. Second operand 28 states. [2018-11-23 04:12:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:18,500 INFO L93 Difference]: Finished difference Result 160 states and 250 transitions. [2018-11-23 04:12:18,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-23 04:12:18,500 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2018-11-23 04:12:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:18,502 INFO L225 Difference]: With dead ends: 160 [2018-11-23 04:12:18,502 INFO L226 Difference]: Without dead ends: 156 [2018-11-23 04:12:18,503 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-11-23 04:12:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-11-23 04:12:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 148. [2018-11-23 04:12:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-11-23 04:12:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 238 transitions. [2018-11-23 04:12:18,512 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 238 transitions. Word has length 109 [2018-11-23 04:12:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:18,512 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 238 transitions. [2018-11-23 04:12:18,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-23 04:12:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 238 transitions. [2018-11-23 04:12:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-23 04:12:18,514 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:18,514 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:18,515 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:18,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:18,515 INFO L82 PathProgramCache]: Analyzing trace with hash -46122593, now seen corresponding path program 4 times [2018-11-23 04:12:18,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:18,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:18,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:18,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:12:18,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-23 04:12:18,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:18,581 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:18,588 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 04:12:18,605 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 04:12:18,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 04:12:18,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-11-23 04:12:18,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:18,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-23 04:12:18,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 04:12:18,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 04:12:18,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-23 04:12:18,635 INFO L87 Difference]: Start difference. First operand 148 states and 238 transitions. Second operand 8 states. [2018-11-23 04:12:18,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:18,732 INFO L93 Difference]: Finished difference Result 166 states and 271 transitions. [2018-11-23 04:12:18,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 04:12:18,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2018-11-23 04:12:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:18,734 INFO L225 Difference]: With dead ends: 166 [2018-11-23 04:12:18,734 INFO L226 Difference]: Without dead ends: 162 [2018-11-23 04:12:18,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-23 04:12:18,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-11-23 04:12:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 138. [2018-11-23 04:12:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-11-23 04:12:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 214 transitions. [2018-11-23 04:12:18,747 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 214 transitions. Word has length 95 [2018-11-23 04:12:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:18,748 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 214 transitions. [2018-11-23 04:12:18,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 04:12:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 214 transitions. [2018-11-23 04:12:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-23 04:12:18,749 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 04:12:18,750 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 04:12:18,750 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 04:12:18,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 04:12:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash 250703466, now seen corresponding path program 1 times [2018-11-23 04:12:18,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 04:12:18,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 04:12:18,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:18,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 04:12:18,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 04:12:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-23 04:12:18,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 04:12:18,826 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 04:12:18,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 04:12:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 04:12:18,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 04:12:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-23 04:12:18,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 04:12:18,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-23 04:12:18,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-23 04:12:18,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-23 04:12:18,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-23 04:12:18,913 INFO L87 Difference]: Start difference. First operand 138 states and 214 transitions. Second operand 10 states. [2018-11-23 04:12:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 04:12:19,054 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2018-11-23 04:12:19,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-23 04:12:19,055 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2018-11-23 04:12:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 04:12:19,055 INFO L225 Difference]: With dead ends: 141 [2018-11-23 04:12:19,056 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 04:12:19,057 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-23 04:12:19,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 04:12:19,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 04:12:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 04:12:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 04:12:19,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2018-11-23 04:12:19,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 04:12:19,058 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 04:12:19,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-23 04:12:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 04:12:19,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 04:12:19,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 04:12:19,340 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,341 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,355 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,356 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,363 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,377 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,378 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,379 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,381 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,391 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,393 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,394 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,422 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,423 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,426 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-23 04:12:19,648 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 23 [2018-11-23 04:12:19,805 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 23 [2018-11-23 04:12:19,807 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 04:12:19,807 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:12:19,807 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 04:12:19,808 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 04:12:19,808 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 04:12:19,808 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 04:12:19,808 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-11-23 04:12:19,808 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-23 04:12:19,808 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-11-23 04:12:19,808 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-23 04:12:19,808 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-11-23 04:12:19,808 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-11-23 04:12:19,809 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 5 main_~x~0) (<= main_~x~0 5)) [2018-11-23 04:12:19,809 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-11-23 04:12:19,809 INFO L448 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-11-23 04:12:19,809 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-11-23 04:12:19,809 INFO L444 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (<= 2 fibo2_~n) (<= |fibo2_#in~n| fibo2_~n)) [2018-11-23 04:12:19,809 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-23 04:12:19,809 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (and (<= fibo2_~n |fibo2_#in~n|) (or (<= 5 |fibo2_#in~n|) (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1) (<= |fibo2_#in~n| 3)) (and (<= |fibo2_#t~ret2| 2) (<= 4 fibo2_~n) (<= 2 |fibo2_#t~ret2|))) (<= |fibo2_#in~n| fibo2_~n) (<= 2 |fibo2_#in~n|)) [2018-11-23 04:12:19,809 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-11-23 04:12:19,810 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-11-23 04:12:19,810 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-11-23 04:12:19,810 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-11-23 04:12:19,810 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-11-23 04:12:19,810 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-11-23 04:12:19,810 INFO L444 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (< 1 fibo1_~n) (<= |fibo1_#in~n| fibo1_~n)) [2018-11-23 04:12:19,810 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-11-23 04:12:19,810 INFO L444 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (<= fibo1_~n |fibo1_#in~n|) (< 1 fibo1_~n) (<= |fibo1_#in~n| fibo1_~n) (or (<= 6 |fibo1_#in~n|) (<= |fibo1_#in~n| 4) (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3))) (or (<= 4 |fibo1_#in~n|) (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1)))) [2018-11-23 04:12:19,811 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-11-23 04:12:19,811 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-11-23 04:12:19,811 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-11-23 04:12:19,811 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-23 04:12:19,811 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-11-23 04:12:19,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:12:19 BoogieIcfgContainer [2018-11-23 04:12:19,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 04:12:19,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 04:12:19,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 04:12:19,815 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 04:12:19,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:12:13" (3/4) ... [2018-11-23 04:12:19,819 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 04:12:19,825 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 04:12:19,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 04:12:19,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-11-23 04:12:19,826 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-11-23 04:12:19,831 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 04:12:19,831 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 04:12:19,831 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 04:12:19,873 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0bab7838-1f64-468f-9e19-0515a16d8ac2/bin-2019/uautomizer/witness.graphml [2018-11-23 04:12:19,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 04:12:19,874 INFO L168 Benchmark]: Toolchain (without parser) took 6896.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 958.2 MB in the beginning and 857.8 MB in the end (delta: 100.4 MB). Peak memory consumption was 309.0 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:19,874 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-11-23 04:12:19,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.63 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:19,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.04 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:19,876 INFO L168 Benchmark]: Boogie Preprocessor took 14.25 ms. Allocated memory is still 1.0 GB. Free memory is still 944.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:12:19,876 INFO L168 Benchmark]: RCFGBuilder took 192.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:19,876 INFO L168 Benchmark]: TraceAbstraction took 6386.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 857.8 MB in the end (delta: 262.7 MB). Peak memory consumption was 336.6 MB. Max. memory is 11.5 GB. [2018-11-23 04:12:19,880 INFO L168 Benchmark]: Witness Printer took 58.68 ms. Allocated memory is still 1.2 GB. Free memory is still 857.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 04:12:19,882 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 223.63 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.04 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.25 ms. Allocated memory is still 1.0 GB. Free memory is still 944.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 192.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -175.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6386.78 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 857.8 MB in the end (delta: 262.7 MB). Peak memory consumption was 336.6 MB. Max. memory is 11.5 GB. * Witness Printer took 58.68 ms. Allocated memory is still 1.2 GB. Free memory is still 857.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. SAFE Result, 6.3s OverallTime, 15 OverallIterations, 10 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 444 SDtfs, 436 SDslu, 2992 SDs, 0 SdLazy, 2904 SolverSat, 367 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1236 GetRequests, 999 SyntacticMatches, 12 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred 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: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 132 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 356 PreInvPairs, 620 NumberOfFragments, 105 HoareAnnotationTreeSize, 356 FomulaSimplifications, 13812 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 11 FomulaSimplificationsInter, 2071 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 2029 NumberOfCodeBlocks, 2016 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 2001 ConstructedInterpolants, 0 QuantifiedInterpolants, 349199 SizeOfPredicates, 52 NumberOfNonLiveVariables, 2197 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 3134/3914 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...