./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/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 0d29117e01c2d68b456be2ae55b4c10d8b73c290 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 08:56:02,152 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 08:56:02,153 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 08:56:02,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 08:56:02,159 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 08:56:02,160 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 08:56:02,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 08:56:02,161 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 08:56:02,162 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 08:56:02,162 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 08:56:02,163 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 08:56:02,163 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 08:56:02,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 08:56:02,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 08:56:02,164 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 08:56:02,165 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 08:56:02,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 08:56:02,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 08:56:02,167 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 08:56:02,168 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 08:56:02,168 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 08:56:02,169 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 08:56:02,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 08:56:02,170 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 08:56:02,170 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 08:56:02,171 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 08:56:02,171 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 08:56:02,172 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 08:56:02,172 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 08:56:02,173 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 08:56:02,173 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 08:56:02,174 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 08:56:02,174 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 08:56:02,174 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 08:56:02,175 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 08:56:02,175 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 08:56:02,175 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 08:56:02,183 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 08:56:02,183 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 08:56:02,183 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 08:56:02,183 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 08:56:02,184 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 08:56:02,184 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 08:56:02,184 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 08:56:02,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 08:56:02,184 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 08:56:02,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 08:56:02,185 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 08:56:02,185 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 08:56:02,185 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 08:56:02,185 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 08:56:02,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 08:56:02,185 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 08:56:02,186 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 08:56:02,186 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 08:56:02,186 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 08:56:02,186 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 08:56:02,186 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 08:56:02,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 08:56:02,186 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 08:56:02,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 08:56:02,187 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 08:56:02,187 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 08:56:02,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 08:56:02,187 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 08:56:02,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 08:56:02,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 08:56:02,187 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_2270b93b-548e-4a35-af5e-7b8aebd27e71/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 -> 0d29117e01c2d68b456be2ae55b4c10d8b73c290 [2018-12-08 08:56:02,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 08:56:02,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 08:56:02,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 08:56:02,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 08:56:02,217 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 08:56:02,217 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i [2018-12-08 08:56:02,254 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/data/7060fdb28/7beab506ca6f449c88c3d08d34404dea/FLAGa800cb27b [2018-12-08 08:56:02,664 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 08:56:02,665 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/sv-benchmarks/c/loop-acceleration/underapprox_false-unreach-call1_true-termination.i [2018-12-08 08:56:02,668 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/data/7060fdb28/7beab506ca6f449c88c3d08d34404dea/FLAGa800cb27b [2018-12-08 08:56:02,676 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/data/7060fdb28/7beab506ca6f449c88c3d08d34404dea [2018-12-08 08:56:02,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 08:56:02,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 08:56:02,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 08:56:02,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 08:56:02,682 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 08:56:02,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ff7dc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02, skipping insertion in model container [2018-12-08 08:56:02,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 08:56:02,697 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 08:56:02,783 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:56:02,785 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 08:56:02,793 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 08:56:02,800 INFO L195 MainTranslator]: Completed translation [2018-12-08 08:56:02,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02 WrapperNode [2018-12-08 08:56:02,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 08:56:02,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 08:56:02,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 08:56:02,801 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 08:56:02,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 08:56:02,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 08:56:02,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 08:56:02,812 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 08:56:02,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... [2018-12-08 08:56:02,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 08:56:02,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 08:56:02,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 08:56:02,828 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 08:56:02,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 08:56:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 08:56:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 08:56:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 08:56:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 08:56:02,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 08:56:02,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 08:56:02,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 08:56:02,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 08:56:02,969 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 08:56:02,969 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 08:56:02,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:56:02 BoogieIcfgContainer [2018-12-08 08:56:02,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 08:56:02,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 08:56:02,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 08:56:02,971 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 08:56:02,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 08:56:02" (1/3) ... [2018-12-08 08:56:02,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca7591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:56:02, skipping insertion in model container [2018-12-08 08:56:02,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 08:56:02" (2/3) ... [2018-12-08 08:56:02,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca7591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 08:56:02, skipping insertion in model container [2018-12-08 08:56:02,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:56:02" (3/3) ... [2018-12-08 08:56:02,973 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_false-unreach-call1_true-termination.i [2018-12-08 08:56:02,978 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 08:56:02,982 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 08:56:02,991 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 08:56:03,007 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 08:56:03,007 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 08:56:03,008 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 08:56:03,008 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 08:56:03,008 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 08:56:03,008 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 08:56:03,008 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 08:56:03,008 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 08:56:03,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 08:56:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-08 08:56:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 08:56:03,021 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,021 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,022 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-08 08:56:03,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:56:03,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 08:56:03,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 08:56:03,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 08:56:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 08:56:03,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 08:56:03,134 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-08 08:56:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:56:03,150 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-12-08 08:56:03,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 08:56:03,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 08:56:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:56:03,156 INFO L225 Difference]: With dead ends: 29 [2018-12-08 08:56:03,156 INFO L226 Difference]: Without dead ends: 12 [2018-12-08 08:56:03,158 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 08:56:03,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-08 08:56:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 08:56:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 08:56:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-08 08:56:03,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-08 08:56:03,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:56:03,177 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-08 08:56:03,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 08:56:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-08 08:56:03,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 08:56:03,178 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,178 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,178 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-08 08:56:03,178 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:56:03,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:56:03,237 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:56:03,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:56:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:56:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:56:03,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-08 08:56:03,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 08:56:03,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 08:56:03,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:56:03,295 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-12-08 08:56:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:56:03,305 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-08 08:56:03,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 08:56:03,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-08 08:56:03,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:56:03,306 INFO L225 Difference]: With dead ends: 18 [2018-12-08 08:56:03,306 INFO L226 Difference]: Without dead ends: 13 [2018-12-08 08:56:03,307 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 08:56:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-08 08:56:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-08 08:56:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-08 08:56:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-08 08:56:03,309 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-08 08:56:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:56:03,309 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-08 08:56:03,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 08:56:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-08 08:56:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 08:56:03,309 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,309 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,309 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2018-12-08 08:56:03,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 08:56:03,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:56:03,356 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:56:03,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 08:56:03,368 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 08:56:03,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:56:03,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:56:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:56:03,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-08 08:56:03,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 08:56:03,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 08:56:03,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:56:03,401 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-12-08 08:56:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:56:03,414 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-08 08:56:03,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 08:56:03,414 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-08 08:56:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:56:03,415 INFO L225 Difference]: With dead ends: 19 [2018-12-08 08:56:03,415 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 08:56:03,415 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-08 08:56:03,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 08:56:03,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 08:56:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 08:56:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-08 08:56:03,417 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-08 08:56:03,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:56:03,417 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-08 08:56:03,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 08:56:03,417 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-08 08:56:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 08:56:03,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,418 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,418 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2018-12-08 08:56:03,418 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:56:03,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:56:03,473 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:56:03,480 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 08:56:03,487 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-08 08:56:03,487 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:56:03,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:56:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:56:03,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-08 08:56:03,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 08:56:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 08:56:03,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 08:56:03,515 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2018-12-08 08:56:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:56:03,540 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-08 08:56:03,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 08:56:03,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-08 08:56:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:56:03,541 INFO L225 Difference]: With dead ends: 20 [2018-12-08 08:56:03,541 INFO L226 Difference]: Without dead ends: 15 [2018-12-08 08:56:03,542 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 08:56:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-08 08:56:03,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-08 08:56:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-08 08:56:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-08 08:56:03,545 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-12-08 08:56:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:56:03,545 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-08 08:56:03,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 08:56:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-08 08:56:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 08:56:03,546 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,546 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,546 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 4 times [2018-12-08 08:56:03,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:56:03,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:56:03,610 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:56:03,622 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 08:56:03,630 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 08:56:03,630 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:56:03,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:56:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,655 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:56:03,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-08 08:56:03,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 08:56:03,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 08:56:03,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-08 08:56:03,656 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-12-08 08:56:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:56:03,673 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-08 08:56:03,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 08:56:03,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-08 08:56:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:56:03,674 INFO L225 Difference]: With dead ends: 21 [2018-12-08 08:56:03,675 INFO L226 Difference]: Without dead ends: 16 [2018-12-08 08:56:03,675 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-08 08:56:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-08 08:56:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-08 08:56:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 08:56:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-08 08:56:03,678 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-12-08 08:56:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:56:03,678 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-08 08:56:03,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 08:56:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-08 08:56:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-08 08:56:03,679 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,679 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,679 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1860436335, now seen corresponding path program 5 times [2018-12-08 08:56:03,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:56:03,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 08:56:03,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 08:56:03,744 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 08:56:03,750 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 08:56:03,758 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-12-08 08:56:03,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 08:56:03,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 08:56:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 08:56:03,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 08:56:03,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-12-08 08:56:03,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 08:56:03,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 08:56:03,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-08 08:56:03,799 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-12-08 08:56:03,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 08:56:03,825 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-12-08 08:56:03,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 08:56:03,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-12-08 08:56:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 08:56:03,825 INFO L225 Difference]: With dead ends: 22 [2018-12-08 08:56:03,825 INFO L226 Difference]: Without dead ends: 17 [2018-12-08 08:56:03,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-08 08:56:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-08 08:56:03,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-08 08:56:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-08 08:56:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-08 08:56:03,828 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-12-08 08:56:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 08:56:03,828 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-08 08:56:03,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 08:56:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-08 08:56:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 08:56:03,828 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 08:56:03,828 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 08:56:03,829 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 08:56:03,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 08:56:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 6 times [2018-12-08 08:56:03,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 08:56:03,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 08:56:03,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 08:56:03,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 08:56:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:56:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 08:56:03,850 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 08:56:03,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 08:56:03 BoogieIcfgContainer [2018-12-08 08:56:03,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 08:56:03,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 08:56:03,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 08:56:03,865 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 08:56:03,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 08:56:02" (3/4) ... [2018-12-08 08:56:03,866 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 08:56:03,893 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2270b93b-548e-4a35-af5e-7b8aebd27e71/bin-2019/uautomizer/witness.graphml [2018-12-08 08:56:03,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 08:56:03,894 INFO L168 Benchmark]: Toolchain (without parser) took 1215.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 953.3 MB in the beginning and 970.8 MB in the end (delta: -17.5 MB). Peak memory consumption was 110.4 MB. Max. memory is 11.5 GB. [2018-12-08 08:56:03,895 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:56:03,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 08:56:03,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.94 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:56:03,895 INFO L168 Benchmark]: Boogie Preprocessor took 16.05 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 08:56:03,895 INFO L168 Benchmark]: RCFGBuilder took 140.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-08 08:56:03,896 INFO L168 Benchmark]: TraceAbstraction took 894.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.5 MB in the end (delta: 140.9 MB). Peak memory consumption was 140.9 MB. Max. memory is 11.5 GB. [2018-12-08 08:56:03,896 INFO L168 Benchmark]: Witness Printer took 28.88 ms. Allocated memory is still 1.2 GB. Free memory was 973.5 MB in the beginning and 970.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 08:56:03,897 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.63 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 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 10.94 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.05 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 894.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.5 MB in the end (delta: 140.9 MB). Peak memory consumption was 140.9 MB. Max. memory is 11.5 GB. * Witness Printer took 28.88 ms. Allocated memory is still 1.2 GB. Free memory was 973.5 MB in the beginning and 970.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] unsigned int x = 0; [L10] unsigned int y = 1; VAL [x=0, y=1] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=1, y=2] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=2, y=4] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=3, y=8] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=4, y=16] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=5, y=32] [L11] COND TRUE x < 6 [L12] x++ [L13] y *= 2 VAL [x=6, y=64] [L11] COND FALSE !(x < 6) VAL [x=6, y=64] [L15] CALL __VERIFIER_assert(y != 64) VAL [\old(cond)=0] [L3] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 0 SDslu, 150 SDs, 0 SdLazy, 127 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 4835 SizeOfPredicates, 5 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...