./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_true-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_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 6a0edfd90480f917557019c272eaa2ec2221428a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:10:51,813 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:10:51,815 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:10:51,823 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:10:51,823 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:10:51,824 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:10:51,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:10:51,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:10:51,827 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:10:51,827 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:10:51,828 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:10:51,828 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:10:51,829 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:10:51,829 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:10:51,830 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:10:51,830 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:10:51,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:10:51,832 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:10:51,833 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:10:51,834 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:10:51,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:10:51,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:10:51,837 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:10:51,837 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:10:51,837 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:10:51,838 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:10:51,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:10:51,839 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:10:51,839 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:10:51,840 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:10:51,840 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:10:51,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:10:51,841 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:10:51,841 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:10:51,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:10:51,842 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:10:51,842 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 17:10:51,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:10:51,852 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:10:51,853 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:10:51,853 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:10:51,854 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 17:10:51,854 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 17:10:51,854 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 17:10:51,854 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:10:51,854 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:10:51,854 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 17:10:51,854 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:10:51,855 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 17:10:51,856 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:10:51,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:10:51,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:10:51,856 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:10:51,856 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:10:51,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:10:51,857 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:10:51,857 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:10:51,857 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:10:51,857 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 17:10:51,857 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:10:51,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 17:10:51,858 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_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 -> 6a0edfd90480f917557019c272eaa2ec2221428a [2018-12-08 17:10:51,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:10:51,887 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:10:51,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:10:51,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:10:51,890 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:10:51,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-12-08 17:10:51,923 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/data/1a5ee425e/fdd6fe2872a041158802f509f0ac4683/FLAGc4d56d798 [2018-12-08 17:10:52,237 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:10:52,237 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-12-08 17:10:52,240 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/data/1a5ee425e/fdd6fe2872a041158802f509f0ac4683/FLAGc4d56d798 [2018-12-08 17:10:52,652 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/data/1a5ee425e/fdd6fe2872a041158802f509f0ac4683 [2018-12-08 17:10:52,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:10:52,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:10:52,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:10:52,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:10:52,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:10:52,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2486db8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52, skipping insertion in model container [2018-12-08 17:10:52,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:10:52,673 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:10:52,761 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:10:52,763 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:10:52,772 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:10:52,781 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:10:52,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52 WrapperNode [2018-12-08 17:10:52,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:10:52,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:10:52,783 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:10:52,783 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:10:52,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:10:52,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:10:52,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:10:52,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:10:52,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... [2018-12-08 17:10:52,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:10:52,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:10:52,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:10:52,807 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:10:52,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 17:10:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:10:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:10:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:10:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:10:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:10:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:10:52,875 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 17:10:52,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 17:10:52,953 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:10:52,953 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 17:10:52,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:10:52 BoogieIcfgContainer [2018-12-08 17:10:52,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:10:52,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:10:52,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:10:52,955 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:10:52,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:10:52" (1/3) ... [2018-12-08 17:10:52,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d2b52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:10:52, skipping insertion in model container [2018-12-08 17:10:52,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:10:52" (2/3) ... [2018-12-08 17:10:52,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d2b52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:10:52, skipping insertion in model container [2018-12-08 17:10:52,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:10:52" (3/3) ... [2018-12-08 17:10:52,957 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-12-08 17:10:52,962 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:10:52,966 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:10:52,974 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:10:52,991 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 17:10:52,991 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:10:52,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:10:52,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:10:52,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:10:52,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:10:52,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:10:52,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:10:52,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:10:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-08 17:10:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 17:10:53,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,004 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,006 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-08 17:10:53,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:10:53,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,112 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 17:10:53,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:10:53,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 17:10:53,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 17:10:53,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 17:10:53,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 17:10:53,125 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-08 17:10:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:53,142 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-12-08 17:10:53,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 17:10:53,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 17:10:53,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:53,147 INFO L225 Difference]: With dead ends: 29 [2018-12-08 17:10:53,147 INFO L226 Difference]: Without dead ends: 12 [2018-12-08 17:10:53,149 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 17:10:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-08 17:10:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 17:10:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 17:10:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-08 17:10:53,169 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-08 17:10:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:53,169 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-08 17:10:53,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 17:10:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-08 17:10:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 17:10:53,170 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,170 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,170 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-08 17:10:53,170 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:10:53,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,220 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 17:10:53,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:53,220 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 17:10:53,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:10:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:53,263 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 17:10:53,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:53,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-08 17:10:53,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 17:10:53,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 17:10:53,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 17:10:53,279 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-12-08 17:10:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:53,291 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-08 17:10:53,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 17:10:53,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-08 17:10:53,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:53,292 INFO L225 Difference]: With dead ends: 18 [2018-12-08 17:10:53,292 INFO L226 Difference]: Without dead ends: 13 [2018-12-08 17:10:53,293 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 17:10:53,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-08 17:10:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-08 17:10:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-08 17:10:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-08 17:10:53,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-08 17:10:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:53,296 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-08 17:10:53,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 17:10:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-08 17:10:53,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 17:10:53,296 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,296 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,297 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2018-12-08 17:10:53,297 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:10:53,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,350 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 17:10:53,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:53,350 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 17:10:53,358 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 17:10:53,365 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 17:10:53,365 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:10:53,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:53,382 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 17:10:53,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:53,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-08 17:10:53,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 17:10:53,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 17:10:53,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-08 17:10:53,397 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-12-08 17:10:53,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:53,413 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-08 17:10:53,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 17:10:53,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-08 17:10:53,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:53,414 INFO L225 Difference]: With dead ends: 19 [2018-12-08 17:10:53,414 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 17:10:53,414 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 17:10:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 17:10:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 17:10:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 17:10:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-08 17:10:53,417 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-08 17:10:53,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:53,417 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-08 17:10:53,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 17:10:53,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-08 17:10:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 17:10:53,418 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,418 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,418 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2018-12-08 17:10:53,418 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 17:10:53,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,489 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 17:10:53,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:53,489 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 17:10:53,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 17:10:53,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-08 17:10:53,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:10:53,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:53,514 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 17:10:53,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:53,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-12-08 17:10:53,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 17:10:53,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 17:10:53,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 17:10:53,530 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2018-12-08 17:10:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:53,549 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-12-08 17:10:53,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 17:10:53,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-12-08 17:10:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:53,550 INFO L225 Difference]: With dead ends: 20 [2018-12-08 17:10:53,550 INFO L226 Difference]: Without dead ends: 15 [2018-12-08 17:10:53,550 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 17:10:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-08 17:10:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-08 17:10:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-08 17:10:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-12-08 17:10:53,553 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-12-08 17:10:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:53,554 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-12-08 17:10:53,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 17:10:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-12-08 17:10:53,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-08 17:10:53,554 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,554 INFO L402 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,554 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 4 times [2018-12-08 17:10:53,555 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 17:10:53,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,615 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 17:10:53,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:53,616 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 17:10:53,624 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 17:10:53,632 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 17:10:53,633 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:10:53,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:53,653 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 17:10:53,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:53,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-08 17:10:53,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 17:10:53,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 17:10:53,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-08 17:10:53,668 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-12-08 17:10:53,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:53,684 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-08 17:10:53,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 17:10:53,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-08 17:10:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:53,685 INFO L225 Difference]: With dead ends: 21 [2018-12-08 17:10:53,685 INFO L226 Difference]: Without dead ends: 16 [2018-12-08 17:10:53,686 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 17:10:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-12-08 17:10:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-12-08 17:10:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 17:10:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-12-08 17:10:53,688 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-12-08 17:10:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:53,689 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-12-08 17:10:53,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 17:10:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-12-08 17:10:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-08 17:10:53,689 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,689 INFO L402 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,690 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1860436335, now seen corresponding path program 5 times [2018-12-08 17:10:53,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 17:10:53,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:53,768 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 17:10:53,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:53,768 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/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 17:10:53,776 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 17:10:53,788 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-12-08 17:10:53,788 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:10:53,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:53,824 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 17:10:53,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:53,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-12-08 17:10:53,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 17:10:53,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 17:10:53,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-08 17:10:53,840 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2018-12-08 17:10:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:53,867 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-12-08 17:10:53,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 17:10:53,867 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2018-12-08 17:10:53,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:53,868 INFO L225 Difference]: With dead ends: 22 [2018-12-08 17:10:53,868 INFO L226 Difference]: Without dead ends: 17 [2018-12-08 17:10:53,868 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 17:10:53,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-08 17:10:53,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-08 17:10:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-08 17:10:53,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-08 17:10:53,872 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-12-08 17:10:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:53,872 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-08 17:10:53,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 17:10:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-08 17:10:53,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 17:10:53,873 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:53,873 INFO L402 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:53,873 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:53,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:53,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 6 times [2018-12-08 17:10:53,873 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:53,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:53,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 17:10:53,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:10:57,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:57,591 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:10:57,601 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-08 17:10:57,611 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-12-08 17:10:57,611 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:10:57,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:10:57,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:57,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-12-08 17:10:57,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-08 17:10:57,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-08 17:10:57,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=294, Unknown=1, NotChecked=0, Total=342 [2018-12-08 17:10:57,967 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 19 states. [2018-12-08 17:10:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:58,108 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-12-08 17:10:58,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 17:10:58,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 16 [2018-12-08 17:10:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:58,109 INFO L225 Difference]: With dead ends: 27 [2018-12-08 17:10:58,109 INFO L226 Difference]: Without dead ends: 19 [2018-12-08 17:10:58,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=58, Invalid=361, Unknown=1, NotChecked=0, Total=420 [2018-12-08 17:10:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-12-08 17:10:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-12-08 17:10:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-12-08 17:10:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-12-08 17:10:58,112 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-12-08 17:10:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:58,113 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-12-08 17:10:58,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-08 17:10:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-12-08 17:10:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 17:10:58,113 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:10:58,113 INFO L402 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:10:58,113 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:10:58,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:10:58,114 INFO L82 PathProgramCache]: Analyzing trace with hash -154572610, now seen corresponding path program 7 times [2018-12-08 17:10:58,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:10:58,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:10:58,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:58,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 17:10:58,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:10:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 17:10:58,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:10:58,179 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:10:58,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:10:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:10:58,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:10:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 17:10:58,220 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:10:58,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-12-08 17:10:58,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 17:10:58,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 17:10:58,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-08 17:10:58,220 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-12-08 17:10:58,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:10:58,241 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-08 17:10:58,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 17:10:58,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-12-08 17:10:58,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:10:58,241 INFO L225 Difference]: With dead ends: 19 [2018-12-08 17:10:58,241 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 17:10:58,242 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-08 17:10:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 17:10:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 17:10:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 17:10:58,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 17:10:58,242 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-12-08 17:10:58,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:10:58,242 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:10:58,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 17:10:58,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 17:10:58,243 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 17:10:58,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 17:10:58,301 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 17:10:58,301 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:10:58,301 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:10:58,301 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 17:10:58,302 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:10:58,302 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:10:58,302 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-12-08 17:10:58,302 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-12-08 17:10:58,302 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-12-08 17:10:58,302 INFO L444 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: (or (and (<= 4 main_~x~0) (<= main_~x~0 4) (exists ((v_main_~y~0_6 Int)) (and (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1) (= (* 16 v_main_~y~0_6) main_~y~0)))) (and (<= 2 main_~x~0) (exists ((v_main_~y~0_6 Int)) (and (<= 1 v_main_~y~0_6) (= main_~y~0 (* 4 v_main_~y~0_6)) (<= v_main_~y~0_6 1))) (<= main_~x~0 2)) (and (exists ((v_main_~y~0_6 Int)) (and (= main_~y~0 (* 8 v_main_~y~0_6)) (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1))) (<= main_~x~0 3) (<= 3 main_~x~0)) (and (exists ((v_main_~y~0_6 Int)) (and (= (* 32 v_main_~y~0_6) main_~y~0) (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1))) (<= 5 main_~x~0) (<= main_~x~0 5)) (and (<= 1 main_~y~0) (<= main_~x~0 0) (<= main_~y~0 1) (<= 0 main_~x~0)) (and (<= main_~x~0 6) (exists ((v_main_~y~0_6 Int)) (and (= main_~y~0 (* 64 v_main_~y~0_6)) (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1))) (<= 6 main_~x~0)) (and (exists ((v_main_~y~0_6 Int)) (and (<= 1 v_main_~y~0_6) (= (* 2 v_main_~y~0_6) main_~y~0) (<= v_main_~y~0_6 1))) (<= main_~x~0 1) (<= 1 main_~x~0))) [2018-12-08 17:10:58,302 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (<= (let ((.cse0 (div main_~y~0 4294967296))) (+ (* 12297829383904690176 .cse0) (* 8589934592 (div (+ main_~y~0 (* (- 4294967296) .cse0)) 3)) 2863311552)) (* 2863311531 main_~y~0)) [2018-12-08 17:10:58,302 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-12-08 17:10:58,302 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-12-08 17:10:58,302 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-12-08 17:10:58,303 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-12-08 17:10:58,303 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-12-08 17:10:58,303 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-12-08 17:10:58,307 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,307 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,308 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,309 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,309 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,309 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,309 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,309 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,309 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,310 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,310 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,310 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,314 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,315 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,315 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,315 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,315 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,315 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,315 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,316 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,317 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,317 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,317 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,317 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:10:58 BoogieIcfgContainer [2018-12-08 17:10:58,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:10:58,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:10:58,319 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:10:58,319 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:10:58,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:10:52" (3/4) ... [2018-12-08 17:10:58,322 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 17:10:58,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 17:10:58,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 17:10:58,326 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-08 17:10:58,328 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-08 17:10:58,328 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-08 17:10:58,328 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 17:10:58,344 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((4 <= x && x <= 4) && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && v_main_~y~0_6 <= 1) && 16 * v_main_~y~0_6 == y)) || ((2 <= x && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && y == 4 * v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && x <= 2)) || (((\exists v_main_~y~0_6 : int :: (y == 8 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && x <= 3) && 3 <= x)) || (((\exists v_main_~y~0_6 : int :: (32 * v_main_~y~0_6 == y && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && 5 <= x) && x <= 5)) || (((1 <= y && x <= 0) && y <= 1) && 0 <= x)) || ((x <= 6 && (\exists v_main_~y~0_6 : int :: (y == 64 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && 6 <= x)) || (((\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && 2 * v_main_~y~0_6 == y) && v_main_~y~0_6 <= 1) && x <= 1) && 1 <= x) [2018-12-08 17:10:58,350 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cbe7d40b-5f09-4abb-9fdc-b1e1a91ed4bc/bin-2019/uautomizer/witness.graphml [2018-12-08 17:10:58,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:10:58,350 INFO L168 Benchmark]: Toolchain (without parser) took 5696.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -132.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:10:58,351 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 17:10:58,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.11 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-08 17:10:58,352 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.52 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:10:58,352 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:10:58,352 INFO L168 Benchmark]: RCFGBuilder took 146.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-12-08 17:10:58,353 INFO L168 Benchmark]: TraceAbstraction took 5365.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.1 MB). Peak memory consumption was 253.8 MB. Max. memory is 11.5 GB. [2018-12-08 17:10:58,353 INFO L168 Benchmark]: Witness Printer took 30.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-12-08 17:10:58,355 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 127.11 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.52 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -153.1 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5365.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.1 MB). Peak memory consumption was 253.8 MB. Max. memory is 11.5 GB. * Witness Printer took 30.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,358 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,359 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,360 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,360 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,360 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,360 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,360 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,361 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-12-08 17:10:58,362 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] Derived loop invariant: (((((((4 <= x && x <= 4) && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && v_main_~y~0_6 <= 1) && 16 * v_main_~y~0_6 == y)) || ((2 <= x && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && y == 4 * v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && x <= 2)) || (((\exists v_main_~y~0_6 : int :: (y == 8 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && x <= 3) && 3 <= x)) || (((\exists v_main_~y~0_6 : int :: (32 * v_main_~y~0_6 == y && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && 5 <= x) && x <= 5)) || (((1 <= y && x <= 0) && y <= 1) && 0 <= x)) || ((x <= 6 && (\exists v_main_~y~0_6 : int :: (y == 64 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && 6 <= x)) || (((\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && 2 * v_main_~y~0_6 == y) && v_main_~y~0_6 <= 1) && x <= 1) && 1 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 5.3s OverallTime, 8 OverallIterations, 8 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 2 SDslu, 290 SDs, 0 SdLazy, 295 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=7, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 161 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 208 NumberOfCodeBlocks, 208 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 193 ConstructedInterpolants, 9 QuantifiedInterpolants, 11615 SizeOfPredicates, 7 NumberOfNonLiveVariables, 313 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 30/184 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...