./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 06:24:49,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 06:24:49,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 06:24:49,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 06:24:49,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 06:24:49,786 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 06:24:49,787 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 06:24:49,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 06:24:49,788 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 06:24:49,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 06:24:49,789 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 06:24:49,789 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 06:24:49,790 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 06:24:49,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 06:24:49,790 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 06:24:49,791 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 06:24:49,791 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 06:24:49,792 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 06:24:49,793 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 06:24:49,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 06:24:49,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 06:24:49,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 06:24:49,796 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 06:24:49,796 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 06:24:49,796 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 06:24:49,796 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 06:24:49,797 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 06:24:49,797 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 06:24:49,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 06:24:49,798 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 06:24:49,798 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 06:24:49,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 06:24:49,798 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 06:24:49,799 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 06:24:49,799 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 06:24:49,799 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 06:24:49,799 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 06:24:49,806 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 06:24:49,807 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 06:24:49,807 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 06:24:49,807 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 06:24:49,807 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 06:24:49,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 06:24:49,808 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 06:24:49,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 06:24:49,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 06:24:49,809 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 06:24:49,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 06:24:49,810 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 06:24:49,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 06:24:49,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 06:24:49,810 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_f2902870-5549-4e5a-9097-fc64b2293baf/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 -> 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 [2018-12-02 06:24:49,828 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 06:24:49,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 06:24:49,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 06:24:49,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 06:24:49,840 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 06:24:49,841 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 06:24:49,878 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/11035a2f3/3fa60f82243244b3b0247fb6d2c4840d/FLAG3561bc313 [2018-12-02 06:24:50,169 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 06:24:50,170 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/sv-benchmarks/c/recursive/Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 06:24:50,174 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/11035a2f3/3fa60f82243244b3b0247fb6d2c4840d/FLAG3561bc313 [2018-12-02 06:24:50,603 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/data/11035a2f3/3fa60f82243244b3b0247fb6d2c4840d [2018-12-02 06:24:50,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 06:24:50,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 06:24:50,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 06:24:50,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 06:24:50,609 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 06:24:50,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355d8d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50, skipping insertion in model container [2018-12-02 06:24:50,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 06:24:50,625 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 06:24:50,720 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:24:50,723 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 06:24:50,733 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 06:24:50,741 INFO L195 MainTranslator]: Completed translation [2018-12-02 06:24:50,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50 WrapperNode [2018-12-02 06:24:50,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 06:24:50,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 06:24:50,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 06:24:50,742 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 06:24:50,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 06:24:50,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 06:24:50,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 06:24:50,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 06:24:50,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... [2018-12-02 06:24:50,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 06:24:50,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 06:24:50,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 06:24:50,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 06:24:50,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2018-12-02 06:24:50,830 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2018-12-02 06:24:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 06:24:50,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 06:24:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 06:24:50,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 06:24:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 06:24:50,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 06:24:50,908 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 06:24:50,908 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-02 06:24:50,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:24:50 BoogieIcfgContainer [2018-12-02 06:24:50,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 06:24:50,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 06:24:50,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 06:24:50,911 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 06:24:50,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:24:50" (1/3) ... [2018-12-02 06:24:50,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb2daa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:24:50, skipping insertion in model container [2018-12-02 06:24:50,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:24:50" (2/3) ... [2018-12-02 06:24:50,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb2daa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:24:50, skipping insertion in model container [2018-12-02 06:24:50,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:24:50" (3/3) ... [2018-12-02 06:24:50,913 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci03_true-unreach-call_true-no-overflow_true-termination.c [2018-12-02 06:24:50,918 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 06:24:50,922 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 06:24:50,931 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 06:24:50,948 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 06:24:50,948 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 06:24:50,948 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 06:24:50,948 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 06:24:50,948 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 06:24:50,948 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 06:24:50,948 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 06:24:50,948 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 06:24:50,949 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 06:24:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-12-02 06:24:50,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 06:24:50,962 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:50,962 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:50,963 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:50,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:50,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2018-12-02 06:24:50,968 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:50,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:50,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:50,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:50,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:24:51,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:24:51,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 06:24:51,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 06:24:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 06:24:51,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 06:24:51,074 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-12-02 06:24:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:51,126 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-12-02 06:24:51,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 06:24:51,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-12-02 06:24:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:51,133 INFO L225 Difference]: With dead ends: 36 [2018-12-02 06:24:51,133 INFO L226 Difference]: Without dead ends: 22 [2018-12-02 06:24:51,135 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 06:24:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-02 06:24:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-02 06:24:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 06:24:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-12-02 06:24:51,158 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2018-12-02 06:24:51,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:51,159 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-12-02 06:24:51,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 06:24:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-12-02 06:24:51,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 06:24:51,160 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:51,160 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:51,160 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:51,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:51,160 INFO L82 PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times [2018-12-02 06:24:51,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:51,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:51,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:51,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 06:24:51,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 06:24:51,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 06:24:51,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 06:24:51,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 06:24:51,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 06:24:51,191 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2018-12-02 06:24:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:51,223 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-12-02 06:24:51,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 06:24:51,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-02 06:24:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:51,224 INFO L225 Difference]: With dead ends: 28 [2018-12-02 06:24:51,224 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 06:24:51,224 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 06:24:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 06:24:51,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-12-02 06:24:51,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-02 06:24:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2018-12-02 06:24:51,228 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2018-12-02 06:24:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:51,228 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2018-12-02 06:24:51,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 06:24:51,228 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2018-12-02 06:24:51,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-02 06:24:51,229 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:51,229 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:51,229 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:51,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:51,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2018-12-02 06:24:51,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:51,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:51,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:51,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 06:24:51,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:51,271 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:51,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 06:24:51,351 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:51,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-12-02 06:24:51,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 06:24:51,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 06:24:51,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-12-02 06:24:51,352 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2018-12-02 06:24:51,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:51,422 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2018-12-02 06:24:51,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-02 06:24:51,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-02 06:24:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:51,423 INFO L225 Difference]: With dead ends: 39 [2018-12-02 06:24:51,423 INFO L226 Difference]: Without dead ends: 24 [2018-12-02 06:24:51,424 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-12-02 06:24:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-12-02 06:24:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-12-02 06:24:51,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-02 06:24:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-02 06:24:51,427 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 27 [2018-12-02 06:24:51,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:51,427 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-02 06:24:51,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 06:24:51,427 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-02 06:24:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-02 06:24:51,428 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:51,428 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:51,428 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:51,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:51,429 INFO L82 PathProgramCache]: Analyzing trace with hash -603082491, now seen corresponding path program 1 times [2018-12-02 06:24:51,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:51,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:51,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:51,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 06:24:51,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:51,464 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:51,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 06:24:51,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:51,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-02 06:24:51,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 06:24:51,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 06:24:51,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-02 06:24:51,499 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2018-12-02 06:24:51,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:51,535 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2018-12-02 06:24:51,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 06:24:51,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-12-02 06:24:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:51,536 INFO L225 Difference]: With dead ends: 33 [2018-12-02 06:24:51,536 INFO L226 Difference]: Without dead ends: 29 [2018-12-02 06:24:51,537 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-02 06:24:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-02 06:24:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-02 06:24:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-02 06:24:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2018-12-02 06:24:51,541 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 28 [2018-12-02 06:24:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:51,541 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-12-02 06:24:51,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 06:24:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2018-12-02 06:24:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-02 06:24:51,542 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:51,542 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:51,542 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:51,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:51,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2046185202, now seen corresponding path program 2 times [2018-12-02 06:24:51,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:51,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:51,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:51,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-12-02 06:24:51,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:51,571 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:51,579 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 06:24:51,589 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 06:24:51,590 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:51,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-12-02 06:24:51,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:51,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2018-12-02 06:24:51,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 06:24:51,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 06:24:51,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-12-02 06:24:51,638 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand 9 states. [2018-12-02 06:24:51,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:51,713 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2018-12-02 06:24:51,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 06:24:51,713 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-12-02 06:24:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:51,714 INFO L225 Difference]: With dead ends: 43 [2018-12-02 06:24:51,714 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 06:24:51,714 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-12-02 06:24:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 06:24:51,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-12-02 06:24:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-02 06:24:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 50 transitions. [2018-12-02 06:24:51,719 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 50 transitions. Word has length 41 [2018-12-02 06:24:51,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:51,720 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 50 transitions. [2018-12-02 06:24:51,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 06:24:51,720 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2018-12-02 06:24:51,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-12-02 06:24:51,721 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:51,721 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:51,721 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:51,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:51,722 INFO L82 PathProgramCache]: Analyzing trace with hash -168777920, now seen corresponding path program 3 times [2018-12-02 06:24:51,722 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:51,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:51,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:51,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:51,828 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 176 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-12-02 06:24:51,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:51,828 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:51,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 06:24:51,854 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-12-02 06:24:51,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:51,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2018-12-02 06:24:51,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:51,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 12 [2018-12-02 06:24:51,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 06:24:51,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 06:24:51,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-12-02 06:24:51,897 INFO L87 Difference]: Start difference. First operand 34 states and 50 transitions. Second operand 12 states. [2018-12-02 06:24:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:52,047 INFO L93 Difference]: Finished difference Result 77 states and 144 transitions. [2018-12-02 06:24:52,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 06:24:52,048 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2018-12-02 06:24:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:52,049 INFO L225 Difference]: With dead ends: 77 [2018-12-02 06:24:52,049 INFO L226 Difference]: Without dead ends: 50 [2018-12-02 06:24:52,050 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2018-12-02 06:24:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-02 06:24:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-12-02 06:24:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 06:24:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 64 transitions. [2018-12-02 06:24:52,056 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 64 transitions. Word has length 97 [2018-12-02 06:24:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:52,056 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 64 transitions. [2018-12-02 06:24:52,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 06:24:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 64 transitions. [2018-12-02 06:24:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-12-02 06:24:52,058 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:52,058 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:52,058 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:52,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:52,058 INFO L82 PathProgramCache]: Analyzing trace with hash 587556238, now seen corresponding path program 4 times [2018-12-02 06:24:52,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:52,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:52,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:52,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:52,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 113 proven. 82 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-12-02 06:24:52,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:52,124 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:52,131 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 06:24:52,147 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 06:24:52,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:52,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 84 proven. 176 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-12-02 06:24:52,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:52,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 14 [2018-12-02 06:24:52,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-02 06:24:52,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-02 06:24:52,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-12-02 06:24:52,215 INFO L87 Difference]: Start difference. First operand 44 states and 64 transitions. Second operand 14 states. [2018-12-02 06:24:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:52,541 INFO L93 Difference]: Finished difference Result 108 states and 183 transitions. [2018-12-02 06:24:52,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-02 06:24:52,542 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 98 [2018-12-02 06:24:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:52,543 INFO L225 Difference]: With dead ends: 108 [2018-12-02 06:24:52,543 INFO L226 Difference]: Without dead ends: 69 [2018-12-02 06:24:52,544 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=714, Unknown=0, NotChecked=0, Total=992 [2018-12-02 06:24:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-12-02 06:24:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-12-02 06:24:52,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-12-02 06:24:52,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2018-12-02 06:24:52,550 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 98 [2018-12-02 06:24:52,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:52,550 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2018-12-02 06:24:52,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-02 06:24:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2018-12-02 06:24:52,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-12-02 06:24:52,552 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:52,552 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 25, 15, 15, 15, 15, 15, 15, 15, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:52,552 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:52,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:52,552 INFO L82 PathProgramCache]: Analyzing trace with hash -516480259, now seen corresponding path program 5 times [2018-12-02 06:24:52,553 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:52,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:52,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:52,553 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:52,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 137 proven. 567 refuted. 0 times theorem prover too weak. 1876 trivial. 0 not checked. [2018-12-02 06:24:52,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:52,631 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:52,638 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-02 06:24:52,681 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-12-02 06:24:52,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:52,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:52,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 630 proven. 586 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2018-12-02 06:24:52,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:52,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 17 [2018-12-02 06:24:52,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-02 06:24:52,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-02 06:24:52,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-12-02 06:24:52,807 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand 17 states. [2018-12-02 06:24:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:53,145 INFO L93 Difference]: Finished difference Result 153 states and 239 transitions. [2018-12-02 06:24:53,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-02 06:24:53,145 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 219 [2018-12-02 06:24:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:53,146 INFO L225 Difference]: With dead ends: 153 [2018-12-02 06:24:53,146 INFO L226 Difference]: Without dead ends: 93 [2018-12-02 06:24:53,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=321, Invalid=1085, Unknown=0, NotChecked=0, Total=1406 [2018-12-02 06:24:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-12-02 06:24:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2018-12-02 06:24:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-12-02 06:24:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 108 transitions. [2018-12-02 06:24:53,153 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 108 transitions. Word has length 219 [2018-12-02 06:24:53,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:53,154 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 108 transitions. [2018-12-02 06:24:53,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-02 06:24:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 108 transitions. [2018-12-02 06:24:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-12-02 06:24:53,157 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:53,157 INFO L402 BasicCegarLoop]: trace histogram [57, 57, 46, 28, 28, 28, 28, 28, 28, 28, 18, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:53,157 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:53,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:53,157 INFO L82 PathProgramCache]: Analyzing trace with hash 165459912, now seen corresponding path program 6 times [2018-12-02 06:24:53,158 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:53,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:53,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:53,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:53,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 263 proven. 1415 refuted. 0 times theorem prover too weak. 7253 trivial. 0 not checked. [2018-12-02 06:24:53,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:53,298 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/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 [2018-12-02 06:24:53,304 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-02 06:24:53,342 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-12-02 06:24:53,343 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:53,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 371 proven. 1307 refuted. 0 times theorem prover too weak. 7253 trivial. 0 not checked. [2018-12-02 06:24:53,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:53,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-12-02 06:24:53,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-02 06:24:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-02 06:24:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-02 06:24:53,420 INFO L87 Difference]: Start difference. First operand 82 states and 108 transitions. Second operand 11 states. [2018-12-02 06:24:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:53,522 INFO L93 Difference]: Finished difference Result 91 states and 125 transitions. [2018-12-02 06:24:53,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 06:24:53,522 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 396 [2018-12-02 06:24:53,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:53,523 INFO L225 Difference]: With dead ends: 91 [2018-12-02 06:24:53,523 INFO L226 Difference]: Without dead ends: 87 [2018-12-02 06:24:53,523 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2018-12-02 06:24:53,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-12-02 06:24:53,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-12-02 06:24:53,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-12-02 06:24:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 121 transitions. [2018-12-02 06:24:53,531 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 121 transitions. Word has length 396 [2018-12-02 06:24:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:53,531 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 121 transitions. [2018-12-02 06:24:53,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-02 06:24:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 121 transitions. [2018-12-02 06:24:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-12-02 06:24:53,540 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:53,541 INFO L402 BasicCegarLoop]: trace histogram [77, 77, 62, 38, 38, 38, 38, 38, 38, 38, 24, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:53,541 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:53,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:53,541 INFO L82 PathProgramCache]: Analyzing trace with hash 826091136, now seen corresponding path program 7 times [2018-12-02 06:24:53,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:53,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:53,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:53,542 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:53,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:53,720 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 425 proven. 2285 refuted. 0 times theorem prover too weak. 13697 trivial. 0 not checked. [2018-12-02 06:24:53,721 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:53,721 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:24:53,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:53,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16407 backedges. 386 proven. 2689 refuted. 0 times theorem prover too weak. 13332 trivial. 0 not checked. [2018-12-02 06:24:53,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:53,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2018-12-02 06:24:53,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-02 06:24:53,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-02 06:24:53,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-12-02 06:24:53,980 INFO L87 Difference]: Start difference. First operand 87 states and 121 transitions. Second operand 12 states. [2018-12-02 06:24:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:54,120 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2018-12-02 06:24:54,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-02 06:24:54,120 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 532 [2018-12-02 06:24:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:54,121 INFO L225 Difference]: With dead ends: 96 [2018-12-02 06:24:54,121 INFO L226 Difference]: Without dead ends: 92 [2018-12-02 06:24:54,122 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2018-12-02 06:24:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-12-02 06:24:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-12-02 06:24:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-12-02 06:24:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 136 transitions. [2018-12-02 06:24:54,128 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 136 transitions. Word has length 532 [2018-12-02 06:24:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:54,128 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 136 transitions. [2018-12-02 06:24:54,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-02 06:24:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 136 transitions. [2018-12-02 06:24:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2018-12-02 06:24:54,134 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:54,134 INFO L402 BasicCegarLoop]: trace histogram [175, 175, 142, 87, 87, 87, 87, 87, 87, 87, 55, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:54,134 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:54,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:54,134 INFO L82 PathProgramCache]: Analyzing trace with hash -497666383, now seen corresponding path program 8 times [2018-12-02 06:24:54,134 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:54,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:54,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:54,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 06:24:54,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:54,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 85875 backedges. 2520 proven. 6657 refuted. 0 times theorem prover too weak. 76698 trivial. 0 not checked. [2018-12-02 06:24:54,679 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:54,679 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:24:54,685 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-02 06:24:54,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-02 06:24:54,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:54,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 85875 backedges. 39097 proven. 2092 refuted. 0 times theorem prover too weak. 44686 trivial. 0 not checked. [2018-12-02 06:24:55,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:55,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 21 [2018-12-02 06:24:55,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-02 06:24:55,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-02 06:24:55,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-12-02 06:24:55,405 INFO L87 Difference]: Start difference. First operand 92 states and 136 transitions. Second operand 21 states. [2018-12-02 06:24:55,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:55,793 INFO L93 Difference]: Finished difference Result 198 states and 359 transitions. [2018-12-02 06:24:55,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-02 06:24:55,793 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1200 [2018-12-02 06:24:55,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:55,794 INFO L225 Difference]: With dead ends: 198 [2018-12-02 06:24:55,794 INFO L226 Difference]: Without dead ends: 115 [2018-12-02 06:24:55,795 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1243 GetRequests, 1198 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=451, Invalid=1619, Unknown=0, NotChecked=0, Total=2070 [2018-12-02 06:24:55,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-12-02 06:24:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 104. [2018-12-02 06:24:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-12-02 06:24:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 150 transitions. [2018-12-02 06:24:55,802 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 150 transitions. Word has length 1200 [2018-12-02 06:24:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:55,803 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 150 transitions. [2018-12-02 06:24:55,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-02 06:24:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 150 transitions. [2018-12-02 06:24:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2018-12-02 06:24:55,808 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:55,808 INFO L402 BasicCegarLoop]: trace histogram [171, 171, 138, 85, 85, 85, 85, 85, 85, 85, 53, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:55,808 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:55,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1984589965, now seen corresponding path program 9 times [2018-12-02 06:24:55,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:55,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:55,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:55,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:55,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 81873 backedges. 4013 proven. 5837 refuted. 0 times theorem prover too weak. 72023 trivial. 0 not checked. [2018-12-02 06:24:56,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:56,331 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:24:56,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 06:24:56,519 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-12-02 06:24:56,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:56,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:56,936 INFO L134 CoverageAnalysis]: Checked inductivity of 81873 backedges. 29640 proven. 296 refuted. 0 times theorem prover too weak. 51937 trivial. 0 not checked. [2018-12-02 06:24:56,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:56,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 18 [2018-12-02 06:24:56,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-02 06:24:56,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-02 06:24:56,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-12-02 06:24:56,953 INFO L87 Difference]: Start difference. First operand 104 states and 150 transitions. Second operand 18 states. [2018-12-02 06:24:57,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:57,240 INFO L93 Difference]: Finished difference Result 210 states and 336 transitions. [2018-12-02 06:24:57,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-02 06:24:57,241 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1172 [2018-12-02 06:24:57,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:57,242 INFO L225 Difference]: With dead ends: 210 [2018-12-02 06:24:57,242 INFO L226 Difference]: Without dead ends: 115 [2018-12-02 06:24:57,243 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2018-12-02 06:24:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-12-02 06:24:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2018-12-02 06:24:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-12-02 06:24:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 140 transitions. [2018-12-02 06:24:57,249 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 140 transitions. Word has length 1172 [2018-12-02 06:24:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:57,249 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 140 transitions. [2018-12-02 06:24:57,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-02 06:24:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 140 transitions. [2018-12-02 06:24:57,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-12-02 06:24:57,252 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 06:24:57,252 INFO L402 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 06:24:57,253 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 06:24:57,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 06:24:57,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 10 times [2018-12-02 06:24:57,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 06:24:57,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 06:24:57,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:57,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 06:24:57,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 06:24:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 06:24:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2018-12-02 06:24:57,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 06:24:57,711 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 06:24:57,717 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-02 06:24:57,821 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-02 06:24:57,821 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 06:24:57,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 06:24:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2018-12-02 06:24:58,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 06:24:58,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2018-12-02 06:24:58,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-02 06:24:58,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-02 06:24:58,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2018-12-02 06:24:58,295 INFO L87 Difference]: Start difference. First operand 97 states and 140 transitions. Second operand 36 states. [2018-12-02 06:24:58,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 06:24:58,432 INFO L93 Difference]: Finished difference Result 108 states and 168 transitions. [2018-12-02 06:24:58,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-02 06:24:58,432 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 750 [2018-12-02 06:24:58,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 06:24:58,433 INFO L225 Difference]: With dead ends: 108 [2018-12-02 06:24:58,433 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 06:24:58,434 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=344, Invalid=1216, Unknown=0, NotChecked=0, Total=1560 [2018-12-02 06:24:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 06:24:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 06:24:58,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 06:24:58,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 06:24:58,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750 [2018-12-02 06:24:58,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 06:24:58,435 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 06:24:58,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-02 06:24:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 06:24:58,435 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 06:24:58,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 06:24:58,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-02 06:24:58,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-02 06:24:58,755 WARN L180 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2018-12-02 06:24:58,757 INFO L448 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2018-12-02 06:24:58,757 INFO L451 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2018-12-02 06:24:58,757 INFO L444 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= |fibonacci_#in~n| fibonacci_~n) (< 1 |fibonacci_#in~n|) (<= fibonacci_~n |fibonacci_#in~n|)) [2018-12-02 06:24:58,757 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-02 06:24:58,757 INFO L444 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse1 (<= 1 |fibonacci_#t~ret0|)) (.cse0 (<= |fibonacci_#in~n| fibonacci_~n)) (.cse3 (<= 7 fibonacci_~n)) (.cse4 (<= 6 fibonacci_~n)) (.cse2 (<= fibonacci_~n |fibonacci_#in~n|))) (or (and (<= |fibonacci_#in~n| 3) .cse0 .cse1 (<= 3 |fibonacci_#in~n|) .cse2) (and (<= 21 |fibonacci_#t~ret0|) .cse0 .cse3 .cse2) (and (<= 13 |fibonacci_#t~ret0|) .cse0 (<= |fibonacci_#in~n| 8) .cse4 .cse2) (and .cse1 (<= |fibonacci_#in~n| 2) (<= 2 fibonacci_~n) .cse2) (and (<= 5 |fibonacci_#in~n|) .cse0 (<= 3 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 5) .cse2) (and (<= 4 |fibonacci_#in~n|) .cse0 (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|)) (and (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7) .cse3 .cse2) (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6) .cse4 .cse2))) [2018-12-02 06:24:58,757 INFO L448 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2018-12-02 06:24:58,757 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 06:24:58,758 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L451 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: true [2018-12-02 06:24:58,758 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2018-12-02 06:24:58,758 INFO L448 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-12-02 06:24:58,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:24:58 BoogieIcfgContainer [2018-12-02 06:24:58,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 06:24:58,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 06:24:58,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 06:24:58,761 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 06:24:58,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:24:50" (3/4) ... [2018-12-02 06:24:58,764 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 06:24:58,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2018-12-02 06:24:58,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 06:24:58,768 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 06:24:58,771 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-02 06:24:58,771 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 06:24:58,771 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 06:24:58,800 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f2902870-5549-4e5a-9097-fc64b2293baf/bin-2019/uautomizer/witness.graphml [2018-12-02 06:24:58,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 06:24:58,801 INFO L168 Benchmark]: Toolchain (without parser) took 8195.29 ms. Allocated memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: 1.3 GB). Free memory was 952.2 MB in the beginning and 1.5 GB in the end (delta: -515.1 MB). Peak memory consumption was 802.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:24:58,801 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-12-02 06:24:58,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.88 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:24:58,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.05 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:24:58,802 INFO L168 Benchmark]: Boogie Preprocessor took 10.86 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:24:58,802 INFO L168 Benchmark]: RCFGBuilder took 143.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -136.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-02 06:24:58,803 INFO L168 Benchmark]: TraceAbstraction took 7851.59 ms. Allocated memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: 1.2 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -389.7 MB). Peak memory consumption was 835.5 MB. Max. memory is 11.5 GB. [2018-12-02 06:24:58,803 INFO L168 Benchmark]: Witness Printer took 39.74 ms. Allocated memory is still 2.3 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 06:24:58,805 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 134.88 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.05 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.86 ms. Allocated memory is still 1.0 GB. Free memory is still 941.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 143.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 941.5 MB in the beginning and 1.1 GB in the end (delta: -136.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7851.59 ms. Allocated memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: 1.2 GB). Free memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: -389.7 MB). Peak memory consumption was 835.5 MB. Max. memory is 11.5 GB. * Witness Printer took 39.74 ms. Allocated memory is still 2.3 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 13 OverallIterations, 175 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 329 SDtfs, 572 SDslu, 1497 SDs, 0 SdLazy, 2136 SolverSat, 673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5029 GetRequests, 4762 SyntacticMatches, 2 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 51 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 212 PreInvPairs, 298 NumberOfFragments, 131 HoareAnnotationTreeSize, 212 FomulaSimplifications, 1498 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2427 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 9149 NumberOfCodeBlocks, 8193 NumberOfCodeBlocksAsserted, 143 NumberOfCheckSat, 9125 ConstructedInterpolants, 0 QuantifiedInterpolants, 10071505 SizeOfPredicates, 66 NumberOfNonLiveVariables, 8016 ConjunctsInSsa, 354 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 425430/459398 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...