./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 0.1.23-635dfa2 [2018-12-09 13:13:38,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 13:13:38,236 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 13:13:38,241 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 13:13:38,242 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 13:13:38,242 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 13:13:38,243 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 13:13:38,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 13:13:38,245 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 13:13:38,245 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 13:13:38,245 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 13:13:38,246 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 13:13:38,246 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 13:13:38,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 13:13:38,247 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 13:13:38,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 13:13:38,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 13:13:38,249 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 13:13:38,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 13:13:38,250 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 13:13:38,251 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 13:13:38,252 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 13:13:38,253 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 13:13:38,253 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 13:13:38,253 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 13:13:38,254 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 13:13:38,254 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 13:13:38,255 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 13:13:38,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 13:13:38,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 13:13:38,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 13:13:38,256 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 13:13:38,256 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 13:13:38,256 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 13:13:38,257 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 13:13:38,257 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 13:13:38,258 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 13:13:38,265 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 13:13:38,265 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 13:13:38,266 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 13:13:38,266 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 13:13:38,266 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 13:13:38,266 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 13:13:38,266 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 13:13:38,266 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 13:13:38,266 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 13:13:38,267 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 13:13:38,267 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 13:13:38,268 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 13:13:38,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 13:13:38,269 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_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:38,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 13:13:38,292 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 13:13:38,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 13:13:38,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 13:13:38,295 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 13:13:38,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c [2018-12-09 13:13:38,329 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/data/83b3df5a2/7043a3b5e906495f85493d65bfd545cd/FLAG7ad46e464 [2018-12-09 13:13:38,736 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 13:13:38,736 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/sv-benchmarks/c/recursive-simple/fibo_2calls_5_true-unreach-call_true-termination.c [2018-12-09 13:13:38,740 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/data/83b3df5a2/7043a3b5e906495f85493d65bfd545cd/FLAG7ad46e464 [2018-12-09 13:13:38,748 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/data/83b3df5a2/7043a3b5e906495f85493d65bfd545cd [2018-12-09 13:13:38,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 13:13:38,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 13:13:38,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 13:13:38,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 13:13:38,753 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 13:13:38,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3163dfbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38, skipping insertion in model container [2018-12-09 13:13:38,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 13:13:38,772 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 13:13:38,857 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:13:38,859 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 13:13:38,868 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 13:13:38,876 INFO L195 MainTranslator]: Completed translation [2018-12-09 13:13:38,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38 WrapperNode [2018-12-09 13:13:38,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 13:13:38,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 13:13:38,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 13:13:38,877 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 13:13:38,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 13:13:38,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 13:13:38,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 13:13:38,888 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 13:13:38,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... [2018-12-09 13:13:38,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 13:13:38,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 13:13:38,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 13:13:38,899 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 13:13:38,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 13:13:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 13:13:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 13:13:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 13:13:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 13:13:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 13:13:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2018-12-09 13:13:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2018-12-09 13:13:38,962 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2018-12-09 13:13:38,962 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2018-12-09 13:13:39,062 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 13:13:39,062 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 13:13:39,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:13:39 BoogieIcfgContainer [2018-12-09 13:13:39,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 13:13:39,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 13:13:39,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 13:13:39,065 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 13:13:39,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:13:38" (1/3) ... [2018-12-09 13:13:39,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb89205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:13:39, skipping insertion in model container [2018-12-09 13:13:39,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:13:38" (2/3) ... [2018-12-09 13:13:39,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb89205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:13:39, skipping insertion in model container [2018-12-09 13:13:39,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:13:39" (3/3) ... [2018-12-09 13:13:39,067 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5_true-unreach-call_true-termination.c [2018-12-09 13:13:39,073 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 13:13:39,077 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 13:13:39,086 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 13:13:39,104 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 13:13:39,105 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 13:13:39,105 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 13:13:39,105 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 13:13:39,105 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 13:13:39,105 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 13:13:39,105 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 13:13:39,105 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 13:13:39,105 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 13:13:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 13:13:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 13:13:39,120 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:39,120 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:39,122 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:39,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2018-12-09 13:13:39,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:39,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:39,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:39,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:39,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:13:39,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:13:39,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:13:39,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:13:39,242 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-12-09 13:13:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:39,303 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2018-12-09 13:13:39,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:13:39,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-12-09 13:13:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:39,310 INFO L225 Difference]: With dead ends: 44 [2018-12-09 13:13:39,310 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 13:13:39,312 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 [2018-12-09 13:13:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 13:13:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 13:13:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 13:13:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-12-09 13:13:39,338 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2018-12-09 13:13:39,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:39,338 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-12-09 13:13:39,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:13:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-12-09 13:13:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 13:13:39,339 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:39,339 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:39,340 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:39,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2018-12-09 13:13:39,340 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:39,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:39,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 13:13:39,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 13:13:39,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 13:13:39,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 13:13:39,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 13:13:39,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 13:13:39,371 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2018-12-09 13:13:39,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:39,413 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2018-12-09 13:13:39,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 13:13:39,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-09 13:13:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:39,415 INFO L225 Difference]: With dead ends: 36 [2018-12-09 13:13:39,415 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 13:13:39,416 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 [2018-12-09 13:13:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 13:13:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-12-09 13:13:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 13:13:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2018-12-09 13:13:39,422 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2018-12-09 13:13:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:39,422 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2018-12-09 13:13:39,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 13:13:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-12-09 13:13:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 13:13:39,423 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:39,423 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] [2018-12-09 13:13:39,423 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:39,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2018-12-09 13:13:39,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:39,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:39,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 13:13:39,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:39,479 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:39,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 13:13:39,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:39,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-12-09 13:13:39,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 13:13:39,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 13:13:39,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-12-09 13:13:39,568 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2018-12-09 13:13:39,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:39,674 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2018-12-09 13:13:39,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 13:13:39,675 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-12-09 13:13:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:39,675 INFO L225 Difference]: With dead ends: 58 [2018-12-09 13:13:39,675 INFO L226 Difference]: Without dead ends: 34 [2018-12-09 13:13:39,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-12-09 13:13:39,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-12-09 13:13:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-12-09 13:13:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-09 13:13:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2018-12-09 13:13:39,680 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2018-12-09 13:13:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:39,681 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2018-12-09 13:13:39,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 13:13:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2018-12-09 13:13:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 13:13:39,682 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:39,682 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] [2018-12-09 13:13:39,682 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:39,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:39,682 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2018-12-09 13:13:39,682 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:39,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:39,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 13:13:39,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:39,727 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:39,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 13:13:39,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:39,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-09 13:13:39,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 13:13:39,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 13:13:39,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 13:13:39,765 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2018-12-09 13:13:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:39,822 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2018-12-09 13:13:39,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 13:13:39,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-12-09 13:13:39,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:39,823 INFO L225 Difference]: With dead ends: 43 [2018-12-09 13:13:39,823 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 13:13:39,823 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 [2018-12-09 13:13:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 13:13:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-12-09 13:13:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 13:13:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-12-09 13:13:39,828 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2018-12-09 13:13:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:39,828 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-09 13:13:39,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 13:13:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2018-12-09 13:13:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-09 13:13:39,829 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:39,829 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] [2018-12-09 13:13:39,829 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:39,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:39,829 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2018-12-09 13:13:39,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:39,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:39,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 13:13:39,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:39,874 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:39,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:39,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-09 13:13:39,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:39,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 10 [2018-12-09 13:13:39,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 13:13:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 13:13:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-12-09 13:13:39,945 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 10 states. [2018-12-09 13:13:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:40,068 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2018-12-09 13:13:40,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 13:13:40,068 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2018-12-09 13:13:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:40,069 INFO L225 Difference]: With dead ends: 70 [2018-12-09 13:13:40,069 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 13:13:40,070 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-12-09 13:13:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 13:13:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-12-09 13:13:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 13:13:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-12-09 13:13:40,074 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2018-12-09 13:13:40,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:40,074 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-09 13:13:40,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 13:13:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2018-12-09 13:13:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 13:13:40,075 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:40,075 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] [2018-12-09 13:13:40,075 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:40,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2018-12-09 13:13:40,076 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:40,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:40,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:40,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-09 13:13:40,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:40,117 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:40,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:40,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 13:13:40,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:40,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2018-12-09 13:13:40,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 13:13:40,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 13:13:40,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-09 13:13:40,179 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 10 states. [2018-12-09 13:13:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:40,279 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2018-12-09 13:13:40,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 13:13:40,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-12-09 13:13:40,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:40,280 INFO L225 Difference]: With dead ends: 61 [2018-12-09 13:13:40,280 INFO L226 Difference]: Without dead ends: 57 [2018-12-09 13:13:40,281 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 [2018-12-09 13:13:40,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-12-09 13:13:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2018-12-09 13:13:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 13:13:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2018-12-09 13:13:40,290 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 40 [2018-12-09 13:13:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:40,290 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2018-12-09 13:13:40,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 13:13:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2018-12-09 13:13:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-09 13:13:40,292 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:40,292 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] [2018-12-09 13:13:40,292 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:40,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:40,293 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2018-12-09 13:13:40,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:40,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:40,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:40,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-12-09 13:13:40,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:40,354 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:40,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:40,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-12-09 13:13:40,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:40,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 10 [2018-12-09 13:13:40,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 13:13:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 13:13:40,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-12-09 13:13:40,426 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 10 states. [2018-12-09 13:13:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:40,517 INFO L93 Difference]: Finished difference Result 71 states and 118 transitions. [2018-12-09 13:13:40,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 13:13:40,517 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2018-12-09 13:13:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:40,518 INFO L225 Difference]: With dead ends: 71 [2018-12-09 13:13:40,519 INFO L226 Difference]: Without dead ends: 67 [2018-12-09 13:13:40,519 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 [2018-12-09 13:13:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-12-09 13:13:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 49. [2018-12-09 13:13:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 13:13:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2018-12-09 13:13:40,529 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 54 [2018-12-09 13:13:40,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:40,529 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2018-12-09 13:13:40,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 13:13:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2018-12-09 13:13:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-12-09 13:13:40,531 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:40,531 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] [2018-12-09 13:13:40,531 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:40,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash 671849284, now seen corresponding path program 2 times [2018-12-09 13:13:40,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:40,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:40,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:40,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-12-09 13:13:40,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:40,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:40,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 13:13:40,635 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 13:13:40,636 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:40,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 22 proven. 41 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-12-09 13:13:40,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:40,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-12-09 13:13:40,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 13:13:40,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 13:13:40,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-09 13:13:40,709 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 14 states. [2018-12-09 13:13:40,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:40,949 INFO L93 Difference]: Finished difference Result 127 states and 238 transitions. [2018-12-09 13:13:40,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 13:13:40,949 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 80 [2018-12-09 13:13:40,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:40,951 INFO L225 Difference]: With dead ends: 127 [2018-12-09 13:13:40,951 INFO L226 Difference]: Without dead ends: 84 [2018-12-09 13:13:40,952 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 [2018-12-09 13:13:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-12-09 13:13:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2018-12-09 13:13:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-09 13:13:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 101 transitions. [2018-12-09 13:13:40,962 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 101 transitions. Word has length 80 [2018-12-09 13:13:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:40,962 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 101 transitions. [2018-12-09 13:13:40,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 13:13:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 101 transitions. [2018-12-09 13:13:40,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-12-09 13:13:40,964 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:40,964 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] [2018-12-09 13:13:40,964 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:40,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:40,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1162571493, now seen corresponding path program 1 times [2018-12-09 13:13:40,965 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:40,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:40,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 13:13:40,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 74 proven. 14 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-12-09 13:13:41,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:41,034 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:41,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:41,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 30 proven. 41 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-12-09 13:13:41,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:41,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2018-12-09 13:13:41,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 13:13:41,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 13:13:41,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2018-12-09 13:13:41,136 INFO L87 Difference]: Start difference. First operand 65 states and 101 transitions. Second operand 15 states. [2018-12-09 13:13:41,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:41,430 INFO L93 Difference]: Finished difference Result 180 states and 349 transitions. [2018-12-09 13:13:41,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 13:13:41,430 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 95 [2018-12-09 13:13:41,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:41,432 INFO L225 Difference]: With dead ends: 180 [2018-12-09 13:13:41,432 INFO L226 Difference]: Without dead ends: 115 [2018-12-09 13:13:41,433 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 [2018-12-09 13:13:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-12-09 13:13:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2018-12-09 13:13:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-12-09 13:13:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2018-12-09 13:13:41,445 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 95 [2018-12-09 13:13:41,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:41,445 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2018-12-09 13:13:41,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 13:13:41,445 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2018-12-09 13:13:41,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-12-09 13:13:41,446 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:41,446 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] [2018-12-09 13:13:41,446 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:41,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:41,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1504181040, now seen corresponding path program 2 times [2018-12-09 13:13:41,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:41,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:41,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:41,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:41,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 40 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2018-12-09 13:13:41,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:41,546 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:41,555 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 13:13:41,569 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 13:13:41,569 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:41,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 31 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-12-09 13:13:41,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:41,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2018-12-09 13:13:41,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 13:13:41,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 13:13:41,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-12-09 13:13:41,644 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand 15 states. [2018-12-09 13:13:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:41,985 INFO L93 Difference]: Finished difference Result 253 states and 504 transitions. [2018-12-09 13:13:41,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 13:13:41,985 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2018-12-09 13:13:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:41,987 INFO L225 Difference]: With dead ends: 253 [2018-12-09 13:13:41,987 INFO L226 Difference]: Without dead ends: 166 [2018-12-09 13:13:41,988 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 [2018-12-09 13:13:41,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2018-12-09 13:13:42,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2018-12-09 13:13:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-12-09 13:13:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 275 transitions. [2018-12-09 13:13:42,006 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 275 transitions. Word has length 82 [2018-12-09 13:13:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:42,006 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 275 transitions. [2018-12-09 13:13:42,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 13:13:42,007 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 275 transitions. [2018-12-09 13:13:42,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-09 13:13:42,009 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:42,009 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:42,009 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:42,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:42,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1841286218, now seen corresponding path program 3 times [2018-12-09 13:13:42,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:42,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:42,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 13:13:42,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2018-12-09 13:13:42,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:42,087 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:42,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 13:13:42,103 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-09 13:13:42,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:42,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-12-09 13:13:42,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:42,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-12-09 13:13:42,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 13:13:42,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 13:13:42,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-12-09 13:13:42,177 INFO L87 Difference]: Start difference. First operand 154 states and 275 transitions. Second operand 14 states. [2018-12-09 13:13:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:42,400 INFO L93 Difference]: Finished difference Result 326 states and 620 transitions. [2018-12-09 13:13:42,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-09 13:13:42,400 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 110 [2018-12-09 13:13:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:42,402 INFO L225 Difference]: With dead ends: 326 [2018-12-09 13:13:42,402 INFO L226 Difference]: Without dead ends: 176 [2018-12-09 13:13:42,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2018-12-09 13:13:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-12-09 13:13:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2018-12-09 13:13:42,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2018-12-09 13:13:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 286 transitions. [2018-12-09 13:13:42,419 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 286 transitions. Word has length 110 [2018-12-09 13:13:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:42,420 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 286 transitions. [2018-12-09 13:13:42,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 13:13:42,420 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 286 transitions. [2018-12-09 13:13:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-12-09 13:13:42,422 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:42,422 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 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] [2018-12-09 13:13:42,423 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:42,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:42,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1643058009, now seen corresponding path program 1 times [2018-12-09 13:13:42,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:42,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:42,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 13:13:42,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 69 proven. 74 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2018-12-09 13:13:42,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:42,525 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:42,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:42,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 67 proven. 75 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2018-12-09 13:13:42,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:42,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2018-12-09 13:13:42,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 13:13:42,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 13:13:42,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-12-09 13:13:42,606 INFO L87 Difference]: Start difference. First operand 164 states and 286 transitions. Second operand 13 states. [2018-12-09 13:13:42,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:42,727 INFO L93 Difference]: Finished difference Result 198 states and 394 transitions. [2018-12-09 13:13:42,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 13:13:42,727 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 123 [2018-12-09 13:13:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:42,728 INFO L225 Difference]: With dead ends: 198 [2018-12-09 13:13:42,728 INFO L226 Difference]: Without dead ends: 145 [2018-12-09 13:13:42,729 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-12-09 13:13:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-12-09 13:13:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2018-12-09 13:13:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-12-09 13:13:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 207 transitions. [2018-12-09 13:13:42,735 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 207 transitions. Word has length 123 [2018-12-09 13:13:42,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:42,735 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 207 transitions. [2018-12-09 13:13:42,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 13:13:42,736 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 207 transitions. [2018-12-09 13:13:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-12-09 13:13:42,737 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:42,737 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:42,737 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:42,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:42,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1677699577, now seen corresponding path program 2 times [2018-12-09 13:13:42,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:42,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:42,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 13:13:42,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 64 proven. 4 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-12-09 13:13:42,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:42,762 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:42,768 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 13:13:42,782 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 13:13:42,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:42,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-12-09 13:13:42,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:42,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-12-09 13:13:42,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 13:13:42,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 13:13:42,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-12-09 13:13:42,833 INFO L87 Difference]: Start difference. First operand 139 states and 207 transitions. Second operand 11 states. [2018-12-09 13:13:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:42,959 INFO L93 Difference]: Finished difference Result 294 states and 471 transitions. [2018-12-09 13:13:42,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 13:13:42,959 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 96 [2018-12-09 13:13:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:42,960 INFO L225 Difference]: With dead ends: 294 [2018-12-09 13:13:42,960 INFO L226 Difference]: Without dead ends: 167 [2018-12-09 13:13:42,961 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-12-09 13:13:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-12-09 13:13:42,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 155. [2018-12-09 13:13:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-12-09 13:13:42,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 237 transitions. [2018-12-09 13:13:42,968 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 237 transitions. Word has length 96 [2018-12-09 13:13:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:42,968 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 237 transitions. [2018-12-09 13:13:42,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 13:13:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 237 transitions. [2018-12-09 13:13:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-12-09 13:13:42,969 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:42,969 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] [2018-12-09 13:13:42,969 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:42,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1540036056, now seen corresponding path program 3 times [2018-12-09 13:13:42,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:42,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:42,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 13:13:42,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-12-09 13:13:43,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:43,217 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:43,223 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 13:13:43,239 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-09 13:13:43,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:43,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-12-09 13:13:43,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:43,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2018-12-09 13:13:43,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-09 13:13:43,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-09 13:13:43,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-12-09 13:13:43,444 INFO L87 Difference]: Start difference. First operand 155 states and 237 transitions. Second operand 28 states. [2018-12-09 13:13:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:43,607 INFO L93 Difference]: Finished difference Result 171 states and 265 transitions. [2018-12-09 13:13:43,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-09 13:13:43,607 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 109 [2018-12-09 13:13:43,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:43,608 INFO L225 Difference]: With dead ends: 171 [2018-12-09 13:13:43,608 INFO L226 Difference]: Without dead ends: 167 [2018-12-09 13:13:43,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-12-09 13:13:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-12-09 13:13:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 150. [2018-12-09 13:13:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-12-09 13:13:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 231 transitions. [2018-12-09 13:13:43,615 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 231 transitions. Word has length 109 [2018-12-09 13:13:43,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:43,615 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 231 transitions. [2018-12-09 13:13:43,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-09 13:13:43,615 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 231 transitions. [2018-12-09 13:13:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-12-09 13:13:43,617 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 13:13:43,617 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 13:13:43,617 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 13:13:43,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 13:13:43,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1828072305, now seen corresponding path program 4 times [2018-12-09 13:13:43,617 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 13:13:43,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 13:13:43,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:43,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 13:13:43,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 13:13:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 13:13:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 58 proven. 163 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-12-09 13:13:43,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 13:13:43,701 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/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 [2018-12-09 13:13:43,707 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 13:13:43,722 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 13:13:43,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 13:13:43,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 13:13:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 62 proven. 157 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-12-09 13:13:43,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 13:13:43,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 14 [2018-12-09 13:13:43,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 13:13:43,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 13:13:43,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-12-09 13:13:43,785 INFO L87 Difference]: Start difference. First operand 150 states and 231 transitions. Second operand 14 states. [2018-12-09 13:13:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 13:13:43,892 INFO L93 Difference]: Finished difference Result 163 states and 256 transitions. [2018-12-09 13:13:43,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 13:13:43,893 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 150 [2018-12-09 13:13:43,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 13:13:43,893 INFO L225 Difference]: With dead ends: 163 [2018-12-09 13:13:43,893 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 13:13:43,894 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-12-09 13:13:43,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 13:13:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 13:13:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 13:13:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 13:13:43,894 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 150 [2018-12-09 13:13:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 13:13:43,895 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 13:13:43,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 13:13:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 13:13:43,895 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 13:13:43,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 13:13:44,077 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,078 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,086 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,088 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,089 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,090 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,091 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,092 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,094 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,095 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,096 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,101 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,103 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,104 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,105 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,111 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,122 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,126 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,128 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,138 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,139 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,144 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,146 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,148 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,155 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,160 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,161 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,163 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,165 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,169 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,170 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,171 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,174 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,175 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,176 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 13:13:44,385 WARN L180 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 26 [2018-12-09 13:13:44,579 WARN L180 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 28 [2018-12-09 13:13:44,580 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 13:13:44,581 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 35 42) the Hoare annotation is: true [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 35 42) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 35 42) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L444 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= 5 main_~x~0) (<= main_~x~0 5)) [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L451 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2018-12-09 13:13:44,581 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)) [2018-12-09 13:13:44,581 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-12-09 13:13:44,581 INFO L444 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse2 (<= 1 |fibo2_#t~ret2|)) (.cse3 (<= |fibo2_#t~ret2| 1))) (let ((.cse0 (and .cse2 (<= fibo2_~n 2) .cse3 (<= 2 fibo2_~n))) (.cse1 (and .cse2 .cse3 (<= |fibo2_#in~n| 3) (<= 3 |fibo2_#in~n|)))) (and (<= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#in~n| fibo2_~n) (or .cse0 .cse1 (< 3 |fibo2_#in~n|)) (or .cse0 .cse1 (and (<= |fibo2_#t~ret2| 2) (<= 2 |fibo2_#t~ret2|)) (<= 5 |fibo2_#in~n|))))) [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L451 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2018-12-09 13:13:44,582 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)) [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L444 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (let ((.cse1 (<= |fibo1_#in~n| 4)) (.cse0 (<= 4 fibo1_~n))) (or (and .cse0 .cse1) (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1) .cse1) (<= 6 |fibo1_#in~n|) (and (<= 3 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 3) .cse0))) (let ((.cse2 (<= fibo1_~n |fibo1_#in~n|))) (or (and .cse2 (<= 3 |fibo1_#in~n|) (<= |fibo1_#in~n| fibo1_~n)) (and .cse2 (< 1 fibo1_~n) (<= |fibo1_#in~n| 2))))) [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-12-09 13:13:44,582 INFO L448 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2018-12-09 13:13:44,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:13:44 BoogieIcfgContainer [2018-12-09 13:13:44,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 13:13:44,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 13:13:44,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 13:13:44,584 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 13:13:44,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:13:39" (3/4) ... [2018-12-09 13:13:44,587 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 13:13:44,592 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 13:13:44,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 13:13:44,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2018-12-09 13:13:44,593 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2018-12-09 13:13:44,596 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 13:13:44,597 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 13:13:44,597 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 13:13:44,627 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_71fd5e5f-ad3c-4e92-8ffc-e6bd950f8b2f/bin-2019/uautomizer/witness.graphml [2018-12-09 13:13:44,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 13:13:44,628 INFO L168 Benchmark]: Toolchain (without parser) took 5877.90 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 312.5 MB). Free memory was 956.0 MB in the beginning and 891.2 MB in the end (delta: 64.8 MB). Peak memory consumption was 377.3 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:44,628 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:44,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.42 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:44,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.57 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:44,628 INFO L168 Benchmark]: Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:44,629 INFO L168 Benchmark]: RCFGBuilder took 163.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:44,629 INFO L168 Benchmark]: TraceAbstraction took 5520.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 179.3 MB). Free memory was 1.1 GB in the beginning and 891.2 MB in the end (delta: 221.8 MB). Peak memory consumption was 401.1 MB. Max. memory is 11.5 GB. [2018-12-09 13:13:44,629 INFO L168 Benchmark]: Witness Printer took 43.14 ms. Allocated memory is still 1.3 GB. Free memory is still 891.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 13:13:44,630 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.42 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 11.57 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 163.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5520.89 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 179.3 MB). Free memory was 1.1 GB in the beginning and 891.2 MB in the end (delta: 221.8 MB). Peak memory consumption was 401.1 MB. Max. memory is 11.5 GB. * Witness Printer took 43.14 ms. Allocated memory is still 1.3 GB. Free memory is still 891.2 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, 5.4s OverallTime, 15 OverallIterations, 12 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 446 SDtfs, 473 SDslu, 3138 SDs, 0 SdLazy, 3179 SolverSat, 413 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1274 GetRequests, 1026 SyntacticMatches, 13 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 133 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 449 PreInvPairs, 821 NumberOfFragments, 163 HoareAnnotationTreeSize, 449 FomulaSimplifications, 21145 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 11 FomulaSimplificationsInter, 2598 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2089 NumberOfCodeBlocks, 1998 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2061 ConstructedInterpolants, 0 QuantifiedInterpolants, 373449 SizeOfPredicates, 52 NumberOfNonLiveVariables, 2085 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 3386/4360 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...