./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/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 f612eebc128d68e9b4bc81ed92184f640c3b9bd4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 07:34:07,044 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 07:34:07,046 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 07:34:07,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 07:34:07,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 07:34:07,053 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 07:34:07,054 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 07:34:07,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 07:34:07,056 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 07:34:07,057 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 07:34:07,058 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 07:34:07,058 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 07:34:07,058 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 07:34:07,059 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 07:34:07,060 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 07:34:07,060 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 07:34:07,061 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 07:34:07,062 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 07:34:07,063 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 07:34:07,064 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 07:34:07,065 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 07:34:07,066 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 07:34:07,067 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 07:34:07,068 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 07:34:07,068 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 07:34:07,068 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 07:34:07,069 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 07:34:07,069 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 07:34:07,070 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 07:34:07,071 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 07:34:07,071 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 07:34:07,071 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 07:34:07,072 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 07:34:07,072 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 07:34:07,072 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 07:34:07,073 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 07:34:07,073 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-23 07:34:07,082 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 07:34:07,083 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 07:34:07,083 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 07:34:07,083 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 07:34:07,084 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 07:34:07,084 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 07:34:07,084 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 07:34:07,084 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 07:34:07,084 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 07:34:07,084 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 07:34:07,085 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 07:34:07,086 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 07:34:07,086 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 07:34:07,086 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 07:34:07,086 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 07:34:07,086 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 07:34:07,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:34:07,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 07:34:07,087 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 07:34:07,087 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 07:34:07,087 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 07:34:07,087 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 07:34:07,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 07:34:07,087 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_102faa5d-e170-4afc-b4e5-1b39f0952838/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 -> f612eebc128d68e9b4bc81ed92184f640c3b9bd4 [2018-11-23 07:34:07,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 07:34:07,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 07:34:07,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 07:34:07,123 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 07:34:07,123 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 07:34:07,123 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_7_true-unreach-call_true-termination.c [2018-11-23 07:34:07,161 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/data/470667d9d/ffc40e504f3e43c897767c027b6718e4/FLAG9d07a0b12 [2018-11-23 07:34:07,490 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 07:34:07,491 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/sv-benchmarks/c/recursive-simple/fibo_7_true-unreach-call_true-termination.c [2018-11-23 07:34:07,496 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/data/470667d9d/ffc40e504f3e43c897767c027b6718e4/FLAG9d07a0b12 [2018-11-23 07:34:07,922 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/data/470667d9d/ffc40e504f3e43c897767c027b6718e4 [2018-11-23 07:34:07,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 07:34:07,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 07:34:07,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 07:34:07,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 07:34:07,928 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 07:34:07,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:34:07" (1/1) ... [2018-11-23 07:34:07,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578ae41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:07, skipping insertion in model container [2018-11-23 07:34:07,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:34:07" (1/1) ... [2018-11-23 07:34:07,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 07:34:07,946 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 07:34:08,049 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:34:08,051 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 07:34:08,060 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 07:34:08,068 INFO L195 MainTranslator]: Completed translation [2018-11-23 07:34:08,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08 WrapperNode [2018-11-23 07:34:08,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 07:34:08,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 07:34:08,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 07:34:08,069 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 07:34:08,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 07:34:08,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 07:34:08,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 07:34:08,080 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 07:34:08,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... [2018-11-23 07:34:08,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 07:34:08,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 07:34:08,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 07:34:08,091 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 07:34:08,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 07:34:08,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 07:34:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 07:34:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 07:34:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 07:34:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 07:34:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 07:34:08,163 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2018-11-23 07:34:08,163 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2018-11-23 07:34:08,249 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 07:34:08,249 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 07:34:08,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:34:08 BoogieIcfgContainer [2018-11-23 07:34:08,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 07:34:08,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 07:34:08,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 07:34:08,252 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 07:34:08,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:34:07" (1/3) ... [2018-11-23 07:34:08,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40edfd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:34:08, skipping insertion in model container [2018-11-23 07:34:08,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:34:08" (2/3) ... [2018-11-23 07:34:08,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40edfd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:34:08, skipping insertion in model container [2018-11-23 07:34:08,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:34:08" (3/3) ... [2018-11-23 07:34:08,255 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_7_true-unreach-call_true-termination.c [2018-11-23 07:34:08,261 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 07:34:08,265 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 07:34:08,274 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 07:34:08,292 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 07:34:08,292 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 07:34:08,292 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 07:34:08,293 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 07:34:08,293 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 07:34:08,293 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 07:34:08,293 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 07:34:08,293 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 07:34:08,293 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 07:34:08,303 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-23 07:34:08,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-23 07:34:08,307 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:08,308 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:08,309 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:08,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:08,313 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2018-11-23 07:34:08,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:08,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:08,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:08,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:34:08,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:34:08,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 07:34:08,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:34:08,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:34:08,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:34:08,436 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-11-23 07:34:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:08,515 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2018-11-23 07:34:08,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:34:08,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-23 07:34:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:08,522 INFO L225 Difference]: With dead ends: 35 [2018-11-23 07:34:08,522 INFO L226 Difference]: Without dead ends: 21 [2018-11-23 07:34:08,524 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:34:08,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-23 07:34:08,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-23 07:34:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 07:34:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-23 07:34:08,551 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2018-11-23 07:34:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:08,551 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-23 07:34:08,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:34:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-23 07:34:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-23 07:34:08,552 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:08,552 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:08,552 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:08,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2018-11-23 07:34:08,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:08,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:08,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:08,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 07:34:08,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 07:34:08,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 07:34:08,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 07:34:08,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 07:34:08,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-23 07:34:08,577 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2018-11-23 07:34:08,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:08,655 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2018-11-23 07:34:08,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 07:34:08,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-23 07:34:08,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:08,656 INFO L225 Difference]: With dead ends: 27 [2018-11-23 07:34:08,656 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 07:34:08,657 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:34:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 07:34:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-11-23 07:34:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 07:34:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2018-11-23 07:34:08,662 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2018-11-23 07:34:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:08,663 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2018-11-23 07:34:08,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 07:34:08,663 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2018-11-23 07:34:08,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-23 07:34:08,663 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:08,664 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:08,664 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:08,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:08,664 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2018-11-23 07:34:08,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:08,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:08,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:08,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 07:34:08,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:08,736 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:08,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:08,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 07:34:08,827 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:08,827 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-23 07:34:08,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 07:34:08,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 07:34:08,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:34:08,828 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2018-11-23 07:34:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:08,922 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2018-11-23 07:34:08,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 07:34:08,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-11-23 07:34:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:08,924 INFO L225 Difference]: With dead ends: 38 [2018-11-23 07:34:08,924 INFO L226 Difference]: Without dead ends: 23 [2018-11-23 07:34:08,925 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-23 07:34:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-23 07:34:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-23 07:34:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-23 07:34:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-23 07:34:08,930 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2018-11-23 07:34:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:08,930 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-23 07:34:08,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 07:34:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-23 07:34:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 07:34:08,931 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:08,931 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:08,931 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:08,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash -983862936, now seen corresponding path program 1 times [2018-11-23 07:34:08,932 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:08,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:08,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:08,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 07:34:08,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:08,983 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:08,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:09,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-23 07:34:09,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:09,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-23 07:34:09,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 07:34:09,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 07:34:09,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-23 07:34:09,031 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 6 states. [2018-11-23 07:34:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:09,077 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2018-11-23 07:34:09,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 07:34:09,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-11-23 07:34:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:09,079 INFO L225 Difference]: With dead ends: 32 [2018-11-23 07:34:09,079 INFO L226 Difference]: Without dead ends: 28 [2018-11-23 07:34:09,079 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:34:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-23 07:34:09,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-23 07:34:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-23 07:34:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2018-11-23 07:34:09,083 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 27 [2018-11-23 07:34:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:09,084 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2018-11-23 07:34:09,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 07:34:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2018-11-23 07:34:09,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 07:34:09,085 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:09,085 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:09,085 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:09,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:09,085 INFO L82 PathProgramCache]: Analyzing trace with hash 146085807, now seen corresponding path program 2 times [2018-11-23 07:34:09,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:09,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:09,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:09,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:09,134 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-23 07:34:09,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:09,134 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:09,153 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 07:34:09,166 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 07:34:09,166 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:09,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-23 07:34:09,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:09,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2018-11-23 07:34:09,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 07:34:09,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 07:34:09,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:34:09,231 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 8 states. [2018-11-23 07:34:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:09,295 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2018-11-23 07:34:09,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 07:34:09,296 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-11-23 07:34:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:09,297 INFO L225 Difference]: With dead ends: 40 [2018-11-23 07:34:09,297 INFO L226 Difference]: Without dead ends: 36 [2018-11-23 07:34:09,297 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-23 07:34:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-23 07:34:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-11-23 07:34:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 07:34:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 49 transitions. [2018-11-23 07:34:09,302 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 49 transitions. Word has length 40 [2018-11-23 07:34:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:09,303 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 49 transitions. [2018-11-23 07:34:09,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 07:34:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 49 transitions. [2018-11-23 07:34:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-23 07:34:09,305 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:09,305 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:09,305 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:09,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:09,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1474757101, now seen corresponding path program 3 times [2018-11-23 07:34:09,306 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:09,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:09,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:09,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 176 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-23 07:34:09,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:09,454 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:09,464 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 07:34:09,488 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-11-23 07:34:09,488 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:09,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2018-11-23 07:34:09,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:09,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2018-11-23 07:34:09,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 07:34:09,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 07:34:09,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-23 07:34:09,535 INFO L87 Difference]: Start difference. First operand 33 states and 49 transitions. Second operand 12 states. [2018-11-23 07:34:09,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:09,721 INFO L93 Difference]: Finished difference Result 76 states and 143 transitions. [2018-11-23 07:34:09,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 07:34:09,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2018-11-23 07:34:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:09,724 INFO L225 Difference]: With dead ends: 76 [2018-11-23 07:34:09,724 INFO L226 Difference]: Without dead ends: 49 [2018-11-23 07:34:09,725 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-11-23 07:34:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-23 07:34:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2018-11-23 07:34:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-23 07:34:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2018-11-23 07:34:09,734 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 63 transitions. Word has length 96 [2018-11-23 07:34:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:09,735 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 63 transitions. [2018-11-23 07:34:09,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 07:34:09,735 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 63 transitions. [2018-11-23 07:34:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-23 07:34:09,737 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:09,737 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:09,737 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:09,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2001184551, now seen corresponding path program 4 times [2018-11-23 07:34:09,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:09,738 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:09,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:09,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-23 07:34:09,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:09,810 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:09,823 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 07:34:09,839 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 07:34:09,839 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:09,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-23 07:34:09,882 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:09,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2018-11-23 07:34:09,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 07:34:09,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 07:34:09,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-23 07:34:09,883 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand 8 states. [2018-11-23 07:34:09,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:09,960 INFO L93 Difference]: Finished difference Result 52 states and 81 transitions. [2018-11-23 07:34:09,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 07:34:09,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2018-11-23 07:34:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:09,962 INFO L225 Difference]: With dead ends: 52 [2018-11-23 07:34:09,962 INFO L226 Difference]: Without dead ends: 48 [2018-11-23 07:34:09,962 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-23 07:34:09,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-23 07:34:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-23 07:34:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-23 07:34:09,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 77 transitions. [2018-11-23 07:34:09,970 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 77 transitions. Word has length 68 [2018-11-23 07:34:09,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:09,971 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 77 transitions. [2018-11-23 07:34:09,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 07:34:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 77 transitions. [2018-11-23 07:34:09,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-23 07:34:09,973 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:09,973 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:09,973 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:09,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:09,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1040445716, now seen corresponding path program 5 times [2018-11-23 07:34:09,974 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:09,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:09,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,975 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:09,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 76 proven. 241 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2018-11-23 07:34:10,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:10,081 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:10,087 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 07:34:10,115 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-11-23 07:34:10,115 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:10,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 187 proven. 336 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2018-11-23 07:34:10,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:10,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 14 [2018-11-23 07:34:10,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 07:34:10,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 07:34:10,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:34:10,231 INFO L87 Difference]: Start difference. First operand 48 states and 77 transitions. Second operand 14 states. [2018-11-23 07:34:10,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:10,473 INFO L93 Difference]: Finished difference Result 118 states and 229 transitions. [2018-11-23 07:34:10,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-23 07:34:10,473 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 136 [2018-11-23 07:34:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:10,474 INFO L225 Difference]: With dead ends: 118 [2018-11-23 07:34:10,474 INFO L226 Difference]: Without dead ends: 72 [2018-11-23 07:34:10,475 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2018-11-23 07:34:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-23 07:34:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2018-11-23 07:34:10,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-23 07:34:10,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2018-11-23 07:34:10,483 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 136 [2018-11-23 07:34:10,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:10,484 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2018-11-23 07:34:10,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 07:34:10,484 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2018-11-23 07:34:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-23 07:34:10,486 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:10,487 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:10,487 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:10,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:10,487 INFO L82 PathProgramCache]: Analyzing trace with hash -509498553, now seen corresponding path program 6 times [2018-11-23 07:34:10,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:10,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:10,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:10,488 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:10,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 669 proven. 122 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2018-11-23 07:34:10,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:10,652 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:10,659 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-23 07:34:10,702 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2018-11-23 07:34:10,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:10,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 236 proven. 396 refuted. 0 times theorem prover too weak. 1609 trivial. 0 not checked. [2018-11-23 07:34:10,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:10,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2018-11-23 07:34:10,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-23 07:34:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-23 07:34:10,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-11-23 07:34:10,795 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand 18 states. [2018-11-23 07:34:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:11,273 INFO L93 Difference]: Finished difference Result 163 states and 256 transitions. [2018-11-23 07:34:11,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-23 07:34:11,273 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 204 [2018-11-23 07:34:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:11,276 INFO L225 Difference]: With dead ends: 163 [2018-11-23 07:34:11,276 INFO L226 Difference]: Without dead ends: 97 [2018-11-23 07:34:11,277 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2018-11-23 07:34:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-23 07:34:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2018-11-23 07:34:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-23 07:34:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2018-11-23 07:34:11,285 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 204 [2018-11-23 07:34:11,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:11,286 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2018-11-23 07:34:11,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-23 07:34:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2018-11-23 07:34:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-23 07:34:11,290 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:11,290 INFO L402 BasicCegarLoop]: trace histogram [51, 51, 41, 25, 25, 25, 25, 25, 25, 25, 16, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:11,290 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:11,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:11,291 INFO L82 PathProgramCache]: Analyzing trace with hash 223191898, now seen corresponding path program 7 times [2018-11-23 07:34:11,291 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:11,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:11,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:11,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:11,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1015 proven. 551 refuted. 0 times theorem prover too weak. 5554 trivial. 0 not checked. [2018-11-23 07:34:11,471 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:11,471 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:11,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:11,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7120 backedges. 1021 proven. 540 refuted. 0 times theorem prover too weak. 5559 trivial. 0 not checked. [2018-11-23 07:34:11,683 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:11,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 14 [2018-11-23 07:34:11,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-23 07:34:11,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-23 07:34:11,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:34:11,684 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand 14 states. [2018-11-23 07:34:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:11,852 INFO L93 Difference]: Finished difference Result 107 states and 161 transitions. [2018-11-23 07:34:11,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 07:34:11,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 354 [2018-11-23 07:34:11,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:11,854 INFO L225 Difference]: With dead ends: 107 [2018-11-23 07:34:11,854 INFO L226 Difference]: Without dead ends: 90 [2018-11-23 07:34:11,855 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2018-11-23 07:34:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-23 07:34:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-11-23 07:34:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-23 07:34:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2018-11-23 07:34:11,864 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 354 [2018-11-23 07:34:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:11,865 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2018-11-23 07:34:11,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-23 07:34:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2018-11-23 07:34:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-11-23 07:34:11,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:11,868 INFO L402 BasicCegarLoop]: trace histogram [35, 35, 28, 17, 17, 17, 17, 17, 17, 17, 11, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:11,868 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:11,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:11,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1660049266, now seen corresponding path program 8 times [2018-11-23 07:34:11,868 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:11,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:11,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:11,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 07:34:11,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 517 proven. 138 refuted. 0 times theorem prover too weak. 2647 trivial. 0 not checked. [2018-11-23 07:34:11,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:11,979 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:11,984 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 07:34:12,024 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 07:34:12,025 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:12,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3302 backedges. 638 proven. 173 refuted. 0 times theorem prover too weak. 2491 trivial. 0 not checked. [2018-11-23 07:34:12,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:12,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2018-11-23 07:34:12,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-23 07:34:12,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 07:34:12,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-23 07:34:12,091 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand 9 states. [2018-11-23 07:34:12,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:12,163 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2018-11-23 07:34:12,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-23 07:34:12,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2018-11-23 07:34:12,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:12,164 INFO L225 Difference]: With dead ends: 97 [2018-11-23 07:34:12,164 INFO L226 Difference]: Without dead ends: 93 [2018-11-23 07:34:12,165 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-23 07:34:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-23 07:34:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2018-11-23 07:34:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-23 07:34:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2018-11-23 07:34:12,173 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 245 [2018-11-23 07:34:12,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:12,174 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2018-11-23 07:34:12,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-23 07:34:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2018-11-23 07:34:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-23 07:34:12,175 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:12,175 INFO L402 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:12,175 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:12,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:12,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1425621089, now seen corresponding path program 9 times [2018-11-23 07:34:12,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:12,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:12,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:12,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:12,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2018-11-23 07:34:12,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:12,515 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:12,525 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 07:34:12,598 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2018-11-23 07:34:12,598 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:12,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 0 proven. 1500 refuted. 0 times theorem prover too weak. 3068 trivial. 0 not checked. [2018-11-23 07:34:12,855 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:12,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 28 [2018-11-23 07:34:12,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-23 07:34:12,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-23 07:34:12,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-11-23 07:34:12,856 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand 28 states. [2018-11-23 07:34:13,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:13,067 INFO L93 Difference]: Finished difference Result 107 states and 141 transitions. [2018-11-23 07:34:13,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-23 07:34:13,068 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 286 [2018-11-23 07:34:13,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:13,069 INFO L225 Difference]: With dead ends: 107 [2018-11-23 07:34:13,069 INFO L226 Difference]: Without dead ends: 103 [2018-11-23 07:34:13,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 323 SyntacticMatches, 21 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2018-11-23 07:34:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-23 07:34:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2018-11-23 07:34:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-23 07:34:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2018-11-23 07:34:13,075 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 286 [2018-11-23 07:34:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:13,075 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2018-11-23 07:34:13,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-23 07:34:13,075 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2018-11-23 07:34:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-11-23 07:34:13,076 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 07:34:13,076 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 07:34:13,076 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 07:34:13,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 07:34:13,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1348604544, now seen corresponding path program 10 times [2018-11-23 07:34:13,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 07:34:13,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 07:34:13,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:13,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 07:34:13,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 07:34:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 07:34:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 375 proven. 1253 refuted. 0 times theorem prover too weak. 4411 trivial. 0 not checked. [2018-11-23 07:34:13,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 07:34:13,252 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 07:34:13,259 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 07:34:13,302 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 07:34:13,302 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 07:34:13,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 07:34:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 387 proven. 1235 refuted. 0 times theorem prover too weak. 4417 trivial. 0 not checked. [2018-11-23 07:34:13,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 07:34:13,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2018-11-23 07:34:13,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-23 07:34:13,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-23 07:34:13,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-23 07:34:13,410 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand 15 states. [2018-11-23 07:34:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 07:34:13,501 INFO L93 Difference]: Finished difference Result 108 states and 144 transitions. [2018-11-23 07:34:13,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-23 07:34:13,502 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 327 [2018-11-23 07:34:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 07:34:13,503 INFO L225 Difference]: With dead ends: 108 [2018-11-23 07:34:13,503 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 07:34:13,503 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2018-11-23 07:34:13,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 07:34:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 07:34:13,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 07:34:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 07:34:13,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 327 [2018-11-23 07:34:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 07:34:13,504 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 07:34:13,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-23 07:34:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 07:34:13,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 07:34:13,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 07:34:13,987 WARN L180 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 43 [2018-11-23 07:34:14,037 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 07:34:14,037 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:34:14,037 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 07:34:14,037 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 07:34:14,037 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 07:34:14,037 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 07:34:14,037 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 23 30) the Hoare annotation is: true [2018-11-23 07:34:14,037 INFO L448 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L26(lines 26 28) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L444 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (<= main_~x~0 7) (<= 7 main_~x~0)) [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 23 30) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 23 30) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point fiboEXIT(lines 5 13) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point fiboFINAL(lines 5 13) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L444 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (and (<= fibo_~n |fibo_#in~n|) (< 1 |fibo_#in~n|) (<= |fibo_#in~n| fibo_~n)) [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L444 ceAbstractionStarter]: At program point L11-2(line 11) the Hoare annotation is: (and (<= fibo_~n |fibo_#in~n|) (let ((.cse0 (<= |fibo_#in~n| fibo_~n))) (or (and (<= 4 |fibo_#in~n|) (<= |fibo_#in~n| 4) .cse0 (<= 2 |fibo_#t~ret0|) (<= |fibo_#t~ret0| 2)) (and .cse0 (<= |fibo_#t~ret0| 1) (<= |fibo_#in~n| 3) (<= 1 |fibo_#t~ret0|)) (and (<= 3 |fibo_#t~ret0|) .cse0 (<= |fibo_#t~ret0| 3) (<= 5 fibo_~n)) (and .cse0 (<= 6 |fibo_#in~n|)))) (or (<= fibo_~n 5) (<= 8 |fibo_#in~n|) (and (<= |fibo_#t~ret0| 5) (<= |fibo_#in~n| 6) (<= 5 |fibo_#t~ret0|)) (and (<= 7 |fibo_#in~n|) (<= |fibo_#t~ret0| 8) (<= 8 |fibo_#t~ret0|))) (< 1 fibo_~n)) [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L8(lines 8 12) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L11-3(line 11) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L448 ceAbstractionStarter]: For program point L6(lines 6 12) no Hoare annotation was computed. [2018-11-23 07:34:14,038 INFO L451 ceAbstractionStarter]: At program point fiboENTRY(lines 5 13) the Hoare annotation is: true [2018-11-23 07:34:14,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 07:34:14 BoogieIcfgContainer [2018-11-23 07:34:14,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 07:34:14,040 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 07:34:14,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 07:34:14,040 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 07:34:14,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:34:08" (3/4) ... [2018-11-23 07:34:14,043 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 07:34:14,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 07:34:14,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 07:34:14,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo [2018-11-23 07:34:14,051 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-23 07:34:14,051 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 07:34:14,051 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 07:34:14,080 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_102faa5d-e170-4afc-b4e5-1b39f0952838/bin-2019/uautomizer/witness.graphml [2018-11-23 07:34:14,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 07:34:14,080 INFO L168 Benchmark]: Toolchain (without parser) took 6156.01 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 369.1 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -153.9 MB). Peak memory consumption was 215.2 MB. Max. memory is 11.5 GB. [2018-11-23 07:34:14,081 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:34:14,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:34:14,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:34:14,082 INFO L168 Benchmark]: Boogie Preprocessor took 10.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 07:34:14,082 INFO L168 Benchmark]: RCFGBuilder took 158.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-23 07:34:14,082 INFO L168 Benchmark]: TraceAbstraction took 5790.16 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 214.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 240.5 MB. Max. memory is 11.5 GB. [2018-11-23 07:34:14,083 INFO L168 Benchmark]: Witness Printer took 39.70 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 07:34:14,085 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.09 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.24 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.09 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 158.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5790.16 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 214.4 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.0 MB). Peak memory consumption was 240.5 MB. Max. memory is 11.5 GB. * Witness Printer took 39.70 ms. Allocated memory is still 1.4 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 4 procedures, 24 locations, 1 error locations. SAFE Result, 5.7s OverallTime, 13 OverallIterations, 51 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 314 SDtfs, 405 SDslu, 1642 SDs, 0 SdLazy, 1870 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2091 GetRequests, 1863 SyntacticMatches, 24 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 32 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 137 PreInvPairs, 246 NumberOfFragments, 109 HoareAnnotationTreeSize, 137 FomulaSimplifications, 894 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2207 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 3645 NumberOfCodeBlocks, 3473 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 3621 ConstructedInterpolants, 0 QuantifiedInterpolants, 1717189 SizeOfPredicates, 55 NumberOfNonLiveVariables, 3606 ConjunctsInSsa, 277 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 41589/49782 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...