./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d28857c86a3c83fc75b1b8cf8125f1c52a370911 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 10:02:14,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 10:02:14,828 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 10:02:14,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 10:02:14,834 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 10:02:14,835 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 10:02:14,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 10:02:14,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 10:02:14,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 10:02:14,838 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 10:02:14,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 10:02:14,839 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 10:02:14,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 10:02:14,840 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 10:02:14,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 10:02:14,841 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 10:02:14,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 10:02:14,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 10:02:14,843 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 10:02:14,844 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 10:02:14,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 10:02:14,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 10:02:14,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 10:02:14,846 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 10:02:14,847 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 10:02:14,847 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 10:02:14,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 10:02:14,848 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 10:02:14,848 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 10:02:14,849 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 10:02:14,849 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 10:02:14,850 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 10:02:14,850 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 10:02:14,850 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 10:02:14,850 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 10:02:14,851 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 10:02:14,851 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-08 10:02:14,858 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 10:02:14,858 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 10:02:14,859 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 10:02:14,859 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 10:02:14,859 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 10:02:14,859 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 10:02:14,859 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 10:02:14,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 10:02:14,860 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 10:02:14,860 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:02:14,861 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 10:02:14,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 10:02:14,861 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_df39fa6d-a9cd-4634-a4c2-312d3970aeea/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2018-12-08 10:02:14,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 10:02:14,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 10:02:14,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 10:02:14,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 10:02:14,889 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 10:02:14,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c [2018-12-08 10:02:14,924 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/data/22b7e50fa/949430201cc04193be5435b377e5ac13/FLAGfb53b27b1 [2018-12-08 10:02:15,346 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 10:02:15,347 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c [2018-12-08 10:02:15,351 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/data/22b7e50fa/949430201cc04193be5435b377e5ac13/FLAGfb53b27b1 [2018-12-08 10:02:15,360 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/data/22b7e50fa/949430201cc04193be5435b377e5ac13 [2018-12-08 10:02:15,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 10:02:15,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 10:02:15,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:15,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 10:02:15,365 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 10:02:15,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709ce3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15, skipping insertion in model container [2018-12-08 10:02:15,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 10:02:15,380 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 10:02:15,460 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:15,462 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 10:02:15,470 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 10:02:15,477 INFO L195 MainTranslator]: Completed translation [2018-12-08 10:02:15,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15 WrapperNode [2018-12-08 10:02:15,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 10:02:15,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 10:02:15,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 10:02:15,478 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 10:02:15,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 10:02:15,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 10:02:15,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 10:02:15,490 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 10:02:15,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... [2018-12-08 10:02:15,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 10:02:15,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 10:02:15,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 10:02:15,502 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 10:02:15,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 10:02:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 10:02:15,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 10:02:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure mlog [2018-12-08 10:02:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure mlog [2018-12-08 10:02:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 10:02:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 10:02:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 10:02:15,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 10:02:15,647 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 10:02:15,647 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 10:02:15,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:15 BoogieIcfgContainer [2018-12-08 10:02:15,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 10:02:15,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 10:02:15,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 10:02:15,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 10:02:15,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 10:02:15" (1/3) ... [2018-12-08 10:02:15,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1881dbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:02:15, skipping insertion in model container [2018-12-08 10:02:15,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 10:02:15" (2/3) ... [2018-12-08 10:02:15,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1881dbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 10:02:15, skipping insertion in model container [2018-12-08 10:02:15,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:15" (3/3) ... [2018-12-08 10:02:15,652 INFO L112 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn_true-termination_true-no-overflow.c [2018-12-08 10:02:15,658 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 10:02:15,662 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-08 10:02:15,671 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-08 10:02:15,689 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 10:02:15,689 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 10:02:15,690 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 10:02:15,690 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 10:02:15,690 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 10:02:15,690 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 10:02:15,690 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 10:02:15,690 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 10:02:15,690 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 10:02:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-12-08 10:02:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 10:02:15,704 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:15,704 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:15,706 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:15,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:15,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1086939273, now seen corresponding path program 1 times [2018-12-08 10:02:15,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:15,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:15,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:15,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:15,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:15,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:15,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 10:02:15,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 10:02:15,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 10:02:15,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-08 10:02:15,829 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2018-12-08 10:02:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:15,879 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-12-08 10:02:15,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 10:02:15,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2018-12-08 10:02:15,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:15,885 INFO L225 Difference]: With dead ends: 32 [2018-12-08 10:02:15,885 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 10:02:15,887 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-08 10:02:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 10:02:15,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 10:02:15,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 10:02:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-08 10:02:15,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 9 [2018-12-08 10:02:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:15,909 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-08 10:02:15,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 10:02:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-08 10:02:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 10:02:15,910 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:15,910 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:15,910 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:15,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:15,910 INFO L82 PathProgramCache]: Analyzing trace with hash -871587015, now seen corresponding path program 1 times [2018-12-08 10:02:15,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:15,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:15,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:15,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:15,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:15,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:15,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:15,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:15,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:15,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:15,942 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-12-08 10:02:15,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:15,962 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-12-08 10:02:15,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 10:02:15,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-12-08 10:02:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:15,963 INFO L225 Difference]: With dead ends: 21 [2018-12-08 10:02:15,963 INFO L226 Difference]: Without dead ends: 20 [2018-12-08 10:02:15,964 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:02:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-08 10:02:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2018-12-08 10:02:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-08 10:02:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-12-08 10:02:15,967 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2018-12-08 10:02:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:15,967 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-12-08 10:02:15,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:15,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-12-08 10:02:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 10:02:15,968 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:15,968 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:15,968 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:15,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:15,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1249393641, now seen corresponding path program 1 times [2018-12-08 10:02:15,969 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:15,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:15,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:15,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:15,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:15,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:15,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:15,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 10:02:15,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 10:02:15,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 10:02:15,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 10:02:15,993 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-12-08 10:02:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:16,006 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-08 10:02:16,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 10:02:16,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-12-08 10:02:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:16,007 INFO L225 Difference]: With dead ends: 18 [2018-12-08 10:02:16,007 INFO L226 Difference]: Without dead ends: 17 [2018-12-08 10:02:16,007 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 10:02:16,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-08 10:02:16,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-08 10:02:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-08 10:02:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-12-08 10:02:16,011 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2018-12-08 10:02:16,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:16,011 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-12-08 10:02:16,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 10:02:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-12-08 10:02:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 10:02:16,012 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:16,012 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:16,012 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:16,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:16,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1700573851, now seen corresponding path program 1 times [2018-12-08 10:02:16,012 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:16,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:16,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:16,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,061 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:16,061 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:16,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:16,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-08 10:02:16,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 10:02:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 10:02:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 10:02:16,112 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2018-12-08 10:02:16,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:16,135 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-12-08 10:02:16,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 10:02:16,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-12-08 10:02:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:16,136 INFO L225 Difference]: With dead ends: 24 [2018-12-08 10:02:16,136 INFO L226 Difference]: Without dead ends: 23 [2018-12-08 10:02:16,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-08 10:02:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-08 10:02:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-12-08 10:02:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-08 10:02:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-12-08 10:02:16,139 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2018-12-08 10:02:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:16,139 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-12-08 10:02:16,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 10:02:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-12-08 10:02:16,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 10:02:16,139 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:16,139 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:16,139 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:16,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:16,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1576595577, now seen corresponding path program 2 times [2018-12-08 10:02:16,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:16,140 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:16,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:16,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:16,176 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:16,181 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 10:02:16,189 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 10:02:16,189 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:16,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:16,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-08 10:02:16,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 10:02:16,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 10:02:16,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-08 10:02:16,209 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-12-08 10:02:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:16,252 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-12-08 10:02:16,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 10:02:16,252 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-12-08 10:02:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:16,253 INFO L225 Difference]: With dead ends: 29 [2018-12-08 10:02:16,253 INFO L226 Difference]: Without dead ends: 28 [2018-12-08 10:02:16,253 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-08 10:02:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-08 10:02:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-12-08 10:02:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-08 10:02:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-12-08 10:02:16,255 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2018-12-08 10:02:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:16,255 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-12-08 10:02:16,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 10:02:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-12-08 10:02:16,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 10:02:16,256 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:16,256 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:16,256 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:16,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:16,256 INFO L82 PathProgramCache]: Analyzing trace with hash -112284325, now seen corresponding path program 3 times [2018-12-08 10:02:16,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:16,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:16,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,257 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:16,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:16,303 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:16,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 10:02:16,322 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-08 10:02:16,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:16,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:16,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-08 10:02:16,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 10:02:16,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 10:02:16,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-08 10:02:16,349 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2018-12-08 10:02:16,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:16,393 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-12-08 10:02:16,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-08 10:02:16,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-12-08 10:02:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:16,394 INFO L225 Difference]: With dead ends: 34 [2018-12-08 10:02:16,394 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 10:02:16,395 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-12-08 10:02:16,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 10:02:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2018-12-08 10:02:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-08 10:02:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-12-08 10:02:16,399 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2018-12-08 10:02:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:16,399 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-12-08 10:02:16,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 10:02:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-12-08 10:02:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-08 10:02:16,400 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:16,400 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:16,400 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:16,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:16,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2077601209, now seen corresponding path program 4 times [2018-12-08 10:02:16,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:16,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:16,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:16,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:16,479 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:16,484 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 10:02:16,495 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 10:02:16,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:16,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:16,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-08 10:02:16,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-08 10:02:16,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-08 10:02:16,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-12-08 10:02:16,520 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 12 states. [2018-12-08 10:02:16,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:16,586 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-12-08 10:02:16,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-08 10:02:16,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2018-12-08 10:02:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:16,587 INFO L225 Difference]: With dead ends: 39 [2018-12-08 10:02:16,587 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 10:02:16,588 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-12-08 10:02:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 10:02:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-12-08 10:02:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 10:02:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-12-08 10:02:16,592 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2018-12-08 10:02:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:16,592 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-12-08 10:02:16,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-08 10:02:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-12-08 10:02:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-08 10:02:16,593 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:16,593 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:16,593 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:16,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:16,593 INFO L82 PathProgramCache]: Analyzing trace with hash 370554907, now seen corresponding path program 5 times [2018-12-08 10:02:16,593 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:16,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:16,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,594 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:16,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:16,694 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:16,702 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 10:02:16,717 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-08 10:02:16,717 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:16,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:16,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-08 10:02:16,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 10:02:16,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 10:02:16,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-12-08 10:02:16,739 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 14 states. [2018-12-08 10:02:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:16,842 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-12-08 10:02:16,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 10:02:16,842 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2018-12-08 10:02:16,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:16,843 INFO L225 Difference]: With dead ends: 44 [2018-12-08 10:02:16,843 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 10:02:16,843 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2018-12-08 10:02:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 10:02:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-12-08 10:02:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-08 10:02:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-12-08 10:02:16,846 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2018-12-08 10:02:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:16,846 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-12-08 10:02:16,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 10:02:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-12-08 10:02:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-08 10:02:16,847 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:16,847 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:16,847 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:16,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:16,847 INFO L82 PathProgramCache]: Analyzing trace with hash 131521273, now seen corresponding path program 6 times [2018-12-08 10:02:16,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:16,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:16,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,848 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:16,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:16,947 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:16,952 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-08 10:02:16,967 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-08 10:02:16,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:16,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:16,987 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:16,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-08 10:02:16,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-08 10:02:16,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-08 10:02:16,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-12-08 10:02:16,988 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 16 states. [2018-12-08 10:02:17,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:17,071 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-12-08 10:02:17,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-08 10:02:17,071 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-12-08 10:02:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:17,072 INFO L225 Difference]: With dead ends: 49 [2018-12-08 10:02:17,072 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 10:02:17,072 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2018-12-08 10:02:17,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 10:02:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2018-12-08 10:02:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-12-08 10:02:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-12-08 10:02:17,075 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2018-12-08 10:02:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:17,075 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-12-08 10:02:17,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-08 10:02:17,076 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-12-08 10:02:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-08 10:02:17,076 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:17,076 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:17,076 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:17,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash 436163291, now seen corresponding path program 7 times [2018-12-08 10:02:17,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:17,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:17,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:17,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:17,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:17,200 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:17,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:17,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:17,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:17,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-08 10:02:17,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-08 10:02:17,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-08 10:02:17,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-12-08 10:02:17,243 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 18 states. [2018-12-08 10:02:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:17,327 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-12-08 10:02:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-08 10:02:17,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2018-12-08 10:02:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:17,328 INFO L225 Difference]: With dead ends: 54 [2018-12-08 10:02:17,328 INFO L226 Difference]: Without dead ends: 53 [2018-12-08 10:02:17,328 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2018-12-08 10:02:17,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-08 10:02:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-12-08 10:02:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-08 10:02:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-12-08 10:02:17,331 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2018-12-08 10:02:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:17,331 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-12-08 10:02:17,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-08 10:02:17,331 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-12-08 10:02:17,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-08 10:02:17,331 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:17,332 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:17,332 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:17,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1288669127, now seen corresponding path program 8 times [2018-12-08 10:02:17,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:17,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:17,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:17,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:17,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:17,446 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/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 [2018-12-08 10:02:17,452 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 10:02:17,464 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 10:02:17,464 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:17,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:17,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:17,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-08 10:02:17,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-08 10:02:17,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-08 10:02:17,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-12-08 10:02:17,491 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 20 states. [2018-12-08 10:02:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:17,589 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-12-08 10:02:17,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-08 10:02:17,589 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2018-12-08 10:02:17,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:17,590 INFO L225 Difference]: With dead ends: 59 [2018-12-08 10:02:17,590 INFO L226 Difference]: Without dead ends: 58 [2018-12-08 10:02:17,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2018-12-08 10:02:17,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-12-08 10:02:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-12-08 10:02:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-08 10:02:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-12-08 10:02:17,595 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2018-12-08 10:02:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:17,595 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-12-08 10:02:17,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-08 10:02:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-12-08 10:02:17,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-08 10:02:17,596 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:17,596 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:17,596 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:17,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash -195691109, now seen corresponding path program 9 times [2018-12-08 10:02:17,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:17,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:17,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:17,754 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/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 [2018-12-08 10:02:17,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 10:02:17,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-08 10:02:17,777 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:17,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:17,800 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:17,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-08 10:02:17,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-08 10:02:17,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-08 10:02:17,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-12-08 10:02:17,801 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 22 states. [2018-12-08 10:02:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:17,902 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-12-08 10:02:17,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-08 10:02:17,903 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2018-12-08 10:02:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:17,903 INFO L225 Difference]: With dead ends: 64 [2018-12-08 10:02:17,904 INFO L226 Difference]: Without dead ends: 63 [2018-12-08 10:02:17,904 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2018-12-08 10:02:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-08 10:02:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2018-12-08 10:02:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-08 10:02:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-12-08 10:02:17,907 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2018-12-08 10:02:17,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:17,907 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-12-08 10:02:17,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-08 10:02:17,908 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-12-08 10:02:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-08 10:02:17,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:17,908 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:17,909 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:17,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:17,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1041663353, now seen corresponding path program 10 times [2018-12-08 10:02:17,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:17,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:17,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:17,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:18,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:18,049 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/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 [2018-12-08 10:02:18,055 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 10:02:18,067 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 10:02:18,067 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:18,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:18,096 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:18,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-08 10:02:18,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-08 10:02:18,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-08 10:02:18,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-12-08 10:02:18,098 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 24 states. [2018-12-08 10:02:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:18,215 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-12-08 10:02:18,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-08 10:02:18,215 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2018-12-08 10:02:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:18,215 INFO L225 Difference]: With dead ends: 69 [2018-12-08 10:02:18,215 INFO L226 Difference]: Without dead ends: 68 [2018-12-08 10:02:18,216 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2018-12-08 10:02:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-12-08 10:02:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-12-08 10:02:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-08 10:02:18,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-12-08 10:02:18,218 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 61 [2018-12-08 10:02:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:18,218 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-12-08 10:02:18,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-08 10:02:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-12-08 10:02:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-12-08 10:02:18,219 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:18,219 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:18,219 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:18,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:18,219 INFO L82 PathProgramCache]: Analyzing trace with hash -446285733, now seen corresponding path program 11 times [2018-12-08 10:02:18,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:18,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:18,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:18,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:18,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:18,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:18,404 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/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 [2018-12-08 10:02:18,412 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 10:02:18,447 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-08 10:02:18,447 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:18,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:18,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:18,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-12-08 10:02:18,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-08 10:02:18,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-08 10:02:18,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-12-08 10:02:18,491 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 26 states. [2018-12-08 10:02:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:18,639 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-12-08 10:02:18,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-08 10:02:18,639 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 66 [2018-12-08 10:02:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:18,640 INFO L225 Difference]: With dead ends: 74 [2018-12-08 10:02:18,640 INFO L226 Difference]: Without dead ends: 73 [2018-12-08 10:02:18,640 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2018-12-08 10:02:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-12-08 10:02:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2018-12-08 10:02:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-12-08 10:02:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-12-08 10:02:18,644 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 66 [2018-12-08 10:02:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:18,644 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-12-08 10:02:18,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-08 10:02:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-12-08 10:02:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-12-08 10:02:18,645 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:18,645 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:18,645 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:18,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1212349767, now seen corresponding path program 12 times [2018-12-08 10:02:18,646 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:18,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:18,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:18,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:18,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:18,858 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:18,859 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:18,864 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-08 10:02:18,893 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-08 10:02:18,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:18,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:18,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:18,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-12-08 10:02:18,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-08 10:02:18,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-08 10:02:18,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-12-08 10:02:18,923 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 28 states. [2018-12-08 10:02:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:19,089 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-12-08 10:02:19,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-08 10:02:19,089 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 71 [2018-12-08 10:02:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:19,089 INFO L225 Difference]: With dead ends: 79 [2018-12-08 10:02:19,089 INFO L226 Difference]: Without dead ends: 78 [2018-12-08 10:02:19,090 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2018-12-08 10:02:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-12-08 10:02:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2018-12-08 10:02:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-12-08 10:02:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-12-08 10:02:19,094 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 71 [2018-12-08 10:02:19,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:19,094 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-12-08 10:02:19,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-08 10:02:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-12-08 10:02:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-12-08 10:02:19,095 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:19,095 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:19,096 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:19,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1048314651, now seen corresponding path program 13 times [2018-12-08 10:02:19,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:19,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:19,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:19,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:19,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:19,290 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:19,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:19,290 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:19,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:19,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:19,324 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:19,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:19,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-08 10:02:19,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-08 10:02:19,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-08 10:02:19,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-12-08 10:02:19,340 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 30 states. [2018-12-08 10:02:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:19,492 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-12-08 10:02:19,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-08 10:02:19,492 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 76 [2018-12-08 10:02:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:19,492 INFO L225 Difference]: With dead ends: 84 [2018-12-08 10:02:19,492 INFO L226 Difference]: Without dead ends: 83 [2018-12-08 10:02:19,493 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2018-12-08 10:02:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-12-08 10:02:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2018-12-08 10:02:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-12-08 10:02:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-12-08 10:02:19,497 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 76 [2018-12-08 10:02:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:19,497 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-12-08 10:02:19,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-08 10:02:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-12-08 10:02:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-12-08 10:02:19,498 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:19,498 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:19,498 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:19,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1101533191, now seen corresponding path program 14 times [2018-12-08 10:02:19,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:19,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:19,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:19,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:19,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:19,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:19,712 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:19,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 10:02:19,732 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 10:02:19,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:19,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:19,757 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:19,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-08 10:02:19,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-12-08 10:02:19,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-12-08 10:02:19,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-12-08 10:02:19,757 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 32 states. [2018-12-08 10:02:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:19,927 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-12-08 10:02:19,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-08 10:02:19,928 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 81 [2018-12-08 10:02:19,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:19,928 INFO L225 Difference]: With dead ends: 89 [2018-12-08 10:02:19,928 INFO L226 Difference]: Without dead ends: 88 [2018-12-08 10:02:19,929 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2018-12-08 10:02:19,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-12-08 10:02:19,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2018-12-08 10:02:19,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-12-08 10:02:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-12-08 10:02:19,932 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 81 [2018-12-08 10:02:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:19,933 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-12-08 10:02:19,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-12-08 10:02:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-12-08 10:02:19,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-12-08 10:02:19,934 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:19,934 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:19,934 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:19,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash 568548827, now seen corresponding path program 15 times [2018-12-08 10:02:19,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:19,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:19,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:19,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:19,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:20,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:20,237 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:20,242 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 10:02:20,276 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-08 10:02:20,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:20,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:20,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:20,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-12-08 10:02:20,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-08 10:02:20,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-08 10:02:20,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-12-08 10:02:20,302 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 34 states. [2018-12-08 10:02:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:20,508 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-12-08 10:02:20,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-08 10:02:20,508 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 86 [2018-12-08 10:02:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:20,509 INFO L225 Difference]: With dead ends: 94 [2018-12-08 10:02:20,509 INFO L226 Difference]: Without dead ends: 93 [2018-12-08 10:02:20,509 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2018-12-08 10:02:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-12-08 10:02:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2018-12-08 10:02:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-12-08 10:02:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-12-08 10:02:20,512 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 86 [2018-12-08 10:02:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:20,512 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-12-08 10:02:20,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-08 10:02:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-12-08 10:02:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-12-08 10:02:20,513 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:20,513 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:20,513 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:20,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:20,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1088729799, now seen corresponding path program 16 times [2018-12-08 10:02:20,514 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:20,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:20,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:20,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:20,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:20,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:20,785 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:20,791 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 10:02:20,807 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 10:02:20,807 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:20,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:20,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:20,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-08 10:02:20,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-08 10:02:20,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-08 10:02:20,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-12-08 10:02:20,833 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 36 states. [2018-12-08 10:02:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:21,026 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-12-08 10:02:21,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-08 10:02:21,026 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 91 [2018-12-08 10:02:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:21,026 INFO L225 Difference]: With dead ends: 99 [2018-12-08 10:02:21,026 INFO L226 Difference]: Without dead ends: 98 [2018-12-08 10:02:21,027 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2018-12-08 10:02:21,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-12-08 10:02:21,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2018-12-08 10:02:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-12-08 10:02:21,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-12-08 10:02:21,029 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 91 [2018-12-08 10:02:21,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:21,030 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-12-08 10:02:21,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-08 10:02:21,030 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-12-08 10:02:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-12-08 10:02:21,030 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:21,030 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:21,030 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:21,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:21,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1122519195, now seen corresponding path program 17 times [2018-12-08 10:02:21,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:21,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:21,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:21,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:21,346 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:21,352 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 10:02:21,400 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-08 10:02:21,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:21,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:21,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:21,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-08 10:02:21,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-08 10:02:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-08 10:02:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-12-08 10:02:21,428 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 38 states. [2018-12-08 10:02:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:21,640 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-12-08 10:02:21,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-08 10:02:21,640 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 96 [2018-12-08 10:02:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:21,640 INFO L225 Difference]: With dead ends: 104 [2018-12-08 10:02:21,640 INFO L226 Difference]: Without dead ends: 103 [2018-12-08 10:02:21,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2018-12-08 10:02:21,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-12-08 10:02:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2018-12-08 10:02:21,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-12-08 10:02:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-12-08 10:02:21,644 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 96 [2018-12-08 10:02:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:21,644 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-12-08 10:02:21,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-08 10:02:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-12-08 10:02:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-12-08 10:02:21,644 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:21,644 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:21,644 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:21,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:21,644 INFO L82 PathProgramCache]: Analyzing trace with hash 909843065, now seen corresponding path program 18 times [2018-12-08 10:02:21,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:21,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:21,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:21,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:21,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:21,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:21,958 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:21,964 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-08 10:02:22,005 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-08 10:02:22,005 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:22,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:22,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:22,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-12-08 10:02:22,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-12-08 10:02:22,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-12-08 10:02:22,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-12-08 10:02:22,033 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 40 states. [2018-12-08 10:02:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:22,257 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-12-08 10:02:22,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-08 10:02:22,257 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 101 [2018-12-08 10:02:22,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:22,258 INFO L225 Difference]: With dead ends: 109 [2018-12-08 10:02:22,258 INFO L226 Difference]: Without dead ends: 108 [2018-12-08 10:02:22,258 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2018-12-08 10:02:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-12-08 10:02:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2018-12-08 10:02:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-12-08 10:02:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-12-08 10:02:22,260 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 101 [2018-12-08 10:02:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:22,261 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-12-08 10:02:22,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-12-08 10:02:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-12-08 10:02:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-12-08 10:02:22,261 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:22,261 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:22,261 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:22,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:22,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1512651941, now seen corresponding path program 19 times [2018-12-08 10:02:22,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:22,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:22,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:22,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:22,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:22,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:22,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:22,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:22,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:22,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:22,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-08 10:02:22,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-08 10:02:22,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-08 10:02:22,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-12-08 10:02:22,671 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 42 states. [2018-12-08 10:02:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:22,918 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-12-08 10:02:22,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-08 10:02:22,919 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 106 [2018-12-08 10:02:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:22,919 INFO L225 Difference]: With dead ends: 114 [2018-12-08 10:02:22,919 INFO L226 Difference]: Without dead ends: 113 [2018-12-08 10:02:22,920 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2018-12-08 10:02:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-12-08 10:02:22,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2018-12-08 10:02:22,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-12-08 10:02:22,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-12-08 10:02:22,922 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 106 [2018-12-08 10:02:22,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:22,922 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-12-08 10:02:22,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-08 10:02:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-12-08 10:02:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-12-08 10:02:22,922 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:22,922 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:22,923 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:22,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:22,923 INFO L82 PathProgramCache]: Analyzing trace with hash -286566471, now seen corresponding path program 20 times [2018-12-08 10:02:22,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:22,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:22,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:22,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:22,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:23,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:23,287 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:23,292 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 10:02:23,310 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 10:02:23,310 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:23,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:23,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:23,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-08 10:02:23,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-08 10:02:23,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-08 10:02:23,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-12-08 10:02:23,348 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 44 states. [2018-12-08 10:02:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:23,617 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-12-08 10:02:23,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-08 10:02:23,618 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 111 [2018-12-08 10:02:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:23,618 INFO L225 Difference]: With dead ends: 119 [2018-12-08 10:02:23,618 INFO L226 Difference]: Without dead ends: 118 [2018-12-08 10:02:23,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2018-12-08 10:02:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-12-08 10:02:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2018-12-08 10:02:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-12-08 10:02:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-12-08 10:02:23,623 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 111 [2018-12-08 10:02:23,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:23,623 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-12-08 10:02:23,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-08 10:02:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-12-08 10:02:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-12-08 10:02:23,624 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:23,624 INFO L402 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:23,624 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:23,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1610272283, now seen corresponding path program 21 times [2018-12-08 10:02:23,624 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:23,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:23,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:23,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:23,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:24,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:24,026 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:24,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 10:02:24,090 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-12-08 10:02:24,090 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:24,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:24,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:24,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:24,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-08 10:02:24,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-12-08 10:02:24,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-12-08 10:02:24,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-12-08 10:02:24,119 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 46 states. [2018-12-08 10:02:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:24,416 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-12-08 10:02:24,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-12-08 10:02:24,416 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 116 [2018-12-08 10:02:24,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:24,417 INFO L225 Difference]: With dead ends: 124 [2018-12-08 10:02:24,417 INFO L226 Difference]: Without dead ends: 123 [2018-12-08 10:02:24,418 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2018-12-08 10:02:24,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-12-08 10:02:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2018-12-08 10:02:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-12-08 10:02:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-12-08 10:02:24,420 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 116 [2018-12-08 10:02:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:24,420 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-12-08 10:02:24,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-12-08 10:02:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-12-08 10:02:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-12-08 10:02:24,421 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:24,421 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:24,421 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:24,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1130366201, now seen corresponding path program 22 times [2018-12-08 10:02:24,421 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:24,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:24,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:24,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:24,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:24,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:24,856 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:24,861 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 10:02:24,883 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 10:02:24,883 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:24,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:24,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:24,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-12-08 10:02:24,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-08 10:02:24,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-08 10:02:24,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-12-08 10:02:24,913 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 48 states. [2018-12-08 10:02:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:25,221 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-12-08 10:02:25,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-08 10:02:25,221 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 121 [2018-12-08 10:02:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:25,221 INFO L225 Difference]: With dead ends: 129 [2018-12-08 10:02:25,221 INFO L226 Difference]: Without dead ends: 128 [2018-12-08 10:02:25,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2018-12-08 10:02:25,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-12-08 10:02:25,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-12-08 10:02:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-12-08 10:02:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-12-08 10:02:25,224 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 121 [2018-12-08 10:02:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:25,224 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-12-08 10:02:25,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-08 10:02:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-12-08 10:02:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-12-08 10:02:25,225 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:25,225 INFO L402 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:25,225 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:25,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:25,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1470130395, now seen corresponding path program 23 times [2018-12-08 10:02:25,225 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:25,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:25,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:25,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:25,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:25,707 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:25,712 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 10:02:25,808 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-12-08 10:02:25,808 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:25,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:25,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:25,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-08 10:02:25,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-08 10:02:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-08 10:02:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-12-08 10:02:25,838 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 50 states. [2018-12-08 10:02:26,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:26,172 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-12-08 10:02:26,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-08 10:02:26,172 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 126 [2018-12-08 10:02:26,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:26,173 INFO L225 Difference]: With dead ends: 134 [2018-12-08 10:02:26,173 INFO L226 Difference]: Without dead ends: 133 [2018-12-08 10:02:26,173 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2018-12-08 10:02:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-12-08 10:02:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2018-12-08 10:02:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-12-08 10:02:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-12-08 10:02:26,175 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 126 [2018-12-08 10:02:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:26,176 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-12-08 10:02:26,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-08 10:02:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-12-08 10:02:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-12-08 10:02:26,176 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:26,176 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:26,176 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:26,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:26,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1556947513, now seen corresponding path program 24 times [2018-12-08 10:02:26,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:26,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:26,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:26,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:26,665 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:26,671 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-08 10:02:26,739 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-12-08 10:02:26,739 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:26,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:26,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:26,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-08 10:02:26,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-08 10:02:26,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-08 10:02:26,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-12-08 10:02:26,775 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 52 states. [2018-12-08 10:02:27,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:27,166 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-12-08 10:02:27,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-08 10:02:27,166 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 131 [2018-12-08 10:02:27,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:27,167 INFO L225 Difference]: With dead ends: 139 [2018-12-08 10:02:27,167 INFO L226 Difference]: Without dead ends: 138 [2018-12-08 10:02:27,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2018-12-08 10:02:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-12-08 10:02:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2018-12-08 10:02:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-12-08 10:02:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-12-08 10:02:27,169 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 131 [2018-12-08 10:02:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:27,170 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-12-08 10:02:27,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-08 10:02:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-12-08 10:02:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-12-08 10:02:27,170 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:27,170 INFO L402 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:27,170 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:27,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash 68391835, now seen corresponding path program 25 times [2018-12-08 10:02:27,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:27,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:27,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:27,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:27,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:27,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:27,682 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:27,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:27,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:27,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:27,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-12-08 10:02:27,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-08 10:02:27,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-08 10:02:27,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-12-08 10:02:27,741 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 54 states. [2018-12-08 10:02:28,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:28,099 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-12-08 10:02:28,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-12-08 10:02:28,099 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 136 [2018-12-08 10:02:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:28,100 INFO L225 Difference]: With dead ends: 144 [2018-12-08 10:02:28,100 INFO L226 Difference]: Without dead ends: 143 [2018-12-08 10:02:28,100 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2018-12-08 10:02:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-12-08 10:02:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2018-12-08 10:02:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-12-08 10:02:28,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-12-08 10:02:28,102 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 136 [2018-12-08 10:02:28,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:28,103 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-12-08 10:02:28,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-08 10:02:28,103 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-12-08 10:02:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-12-08 10:02:28,103 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:28,103 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:28,103 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:28,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:28,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1936109433, now seen corresponding path program 26 times [2018-12-08 10:02:28,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:28,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:28,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:28,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 10:02:28,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:28,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:28,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:28,681 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:28,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 10:02:28,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 10:02:28,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:28,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:28,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:28,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-12-08 10:02:28,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-12-08 10:02:28,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-12-08 10:02:28,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-12-08 10:02:28,741 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 56 states. [2018-12-08 10:02:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:29,116 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-12-08 10:02:29,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-12-08 10:02:29,116 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 141 [2018-12-08 10:02:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:29,116 INFO L225 Difference]: With dead ends: 149 [2018-12-08 10:02:29,116 INFO L226 Difference]: Without dead ends: 148 [2018-12-08 10:02:29,117 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2018-12-08 10:02:29,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-12-08 10:02:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2018-12-08 10:02:29,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-12-08 10:02:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-12-08 10:02:29,119 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 141 [2018-12-08 10:02:29,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:29,119 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-12-08 10:02:29,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-12-08 10:02:29,120 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-12-08 10:02:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-12-08 10:02:29,120 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:29,120 INFO L402 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:29,120 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:29,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash 765480539, now seen corresponding path program 27 times [2018-12-08 10:02:29,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:29,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:29,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:29,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:29,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:29,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:29,742 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:29,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 10:02:29,828 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-12-08 10:02:29,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:29,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:29,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:29,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-12-08 10:02:29,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-12-08 10:02:29,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-12-08 10:02:29,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-12-08 10:02:29,871 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 58 states. [2018-12-08 10:02:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:30,282 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-12-08 10:02:30,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-12-08 10:02:30,282 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 146 [2018-12-08 10:02:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:30,283 INFO L225 Difference]: With dead ends: 154 [2018-12-08 10:02:30,283 INFO L226 Difference]: Without dead ends: 153 [2018-12-08 10:02:30,284 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2018-12-08 10:02:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-12-08 10:02:30,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2018-12-08 10:02:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-12-08 10:02:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2018-12-08 10:02:30,286 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 146 [2018-12-08 10:02:30,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:30,286 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2018-12-08 10:02:30,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-12-08 10:02:30,286 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2018-12-08 10:02:30,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-12-08 10:02:30,287 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:30,287 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:30,287 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:30,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 241216697, now seen corresponding path program 28 times [2018-12-08 10:02:30,287 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:30,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:30,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:30,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:30,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:30,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:30,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:30,928 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:30,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-08 10:02:30,959 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-08 10:02:30,959 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:30,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:31,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:31,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-12-08 10:02:31,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-12-08 10:02:31,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-12-08 10:02:31,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-12-08 10:02:31,005 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 60 states. [2018-12-08 10:02:31,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:31,467 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-12-08 10:02:31,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-12-08 10:02:31,467 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 151 [2018-12-08 10:02:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:31,468 INFO L225 Difference]: With dead ends: 159 [2018-12-08 10:02:31,468 INFO L226 Difference]: Without dead ends: 158 [2018-12-08 10:02:31,468 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2018-12-08 10:02:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-12-08 10:02:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2018-12-08 10:02:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-12-08 10:02:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-12-08 10:02:31,470 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 151 [2018-12-08 10:02:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:31,471 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-12-08 10:02:31,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-12-08 10:02:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-12-08 10:02:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-12-08 10:02:31,471 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:31,471 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:31,471 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:31,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:31,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1382901477, now seen corresponding path program 29 times [2018-12-08 10:02:31,472 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:31,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:31,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:31,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:31,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 10:02:32,150 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 10:02:32,155 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-08 10:02:32,345 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-12-08 10:02:32,345 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 10:02:32,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 10:02:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:32,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 10:02:32,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-12-08 10:02:32,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-12-08 10:02:32,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-12-08 10:02:32,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-12-08 10:02:32,380 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 62 states. [2018-12-08 10:02:32,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:32,841 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-12-08 10:02:32,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-12-08 10:02:32,842 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 156 [2018-12-08 10:02:32,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:32,842 INFO L225 Difference]: With dead ends: 164 [2018-12-08 10:02:32,842 INFO L226 Difference]: Without dead ends: 163 [2018-12-08 10:02:32,843 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2018-12-08 10:02:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-12-08 10:02:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2018-12-08 10:02:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-12-08 10:02:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-12-08 10:02:32,845 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 156 [2018-12-08 10:02:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:32,845 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-12-08 10:02:32,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-12-08 10:02:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-12-08 10:02:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-12-08 10:02:32,846 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 10:02:32,846 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 10:02:32,846 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-08 10:02:32,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 10:02:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1139743225, now seen corresponding path program 30 times [2018-12-08 10:02:32,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 10:02:32,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 10:02:32,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 10:02:32,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 10:02:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 10:02:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 2295 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 10:02:34,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 10:02:34,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2018-12-08 10:02:34,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-12-08 10:02:34,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-12-08 10:02:34,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=6013, Unknown=0, NotChecked=0, Total=8930 [2018-12-08 10:02:34,615 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 95 states. [2018-12-08 10:02:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 10:02:35,386 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2018-12-08 10:02:35,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-12-08 10:02:35,386 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 161 [2018-12-08 10:02:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 10:02:35,386 INFO L225 Difference]: With dead ends: 164 [2018-12-08 10:02:35,386 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 10:02:35,387 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6614 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6850, Invalid=17330, Unknown=0, NotChecked=0, Total=24180 [2018-12-08 10:02:35,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 10:02:35,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 10:02:35,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 10:02:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 10:02:35,388 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 161 [2018-12-08 10:02:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 10:02:35,388 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 10:02:35,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-12-08 10:02:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 10:02:35,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 10:02:35,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 10:02:35,784 WARN L180 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 158 [2018-12-08 10:02:35,787 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point mlogFINAL(lines 3 16) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-12-08 10:02:35,787 INFO L448 ceAbstractionStarter]: For program point mlogEXIT(lines 3 16) no Hoare annotation was computed. [2018-12-08 10:02:35,788 INFO L444 ceAbstractionStarter]: At program point L7-2(lines 7 12) the Hoare annotation is: (let ((.cse1 (div mlog_~x 2)) (.cse0 (< 0 (+ mlog_~x 1))) (.cse2 (<= 0 mlog_~res~0))) (or (and (<= mlog_~res~0 22) .cse0 (<= .cse1 255) .cse2) (and (<= mlog_~res~0 19) .cse0 (<= .cse1 2047) .cse2) (and (<= .cse1 16777215) .cse0 (<= mlog_~res~0 6) .cse2) (< 2147483647 |mlog_#in~x|) (and (<= mlog_~x 2147483647) (<= mlog_~res~0 0) .cse2) (and (<= .cse1 7) .cse0 (<= mlog_~res~0 27) .cse2) (and .cse0 (<= mlog_~res~0 8) (<= .cse1 4194303) .cse2) (and (<= mlog_~res~0 18) .cse0 .cse2 (<= .cse1 4095)) (and .cse0 (<= mlog_~res~0 13) (<= .cse1 131071) .cse2) (and (<= mlog_~res~0 20) .cse0 .cse2 (<= .cse1 1023)) (and (<= mlog_~res~0 28) .cse0 (<= .cse1 3) .cse2) (and (<= mlog_~res~0 1) .cse0 (<= .cse1 536870911) .cse2) (and .cse0 (<= mlog_~res~0 26) (<= .cse1 15) .cse2) (and .cse0 (<= mlog_~res~0 15) (<= .cse1 32767) .cse2) (and .cse0 (<= mlog_~res~0 24) .cse2 (<= .cse1 63)) (and (<= .cse1 33554431) .cse0 (<= mlog_~res~0 5) .cse2) (and (<= mlog_~res~0 3) .cse0 (<= .cse1 134217727) .cse2) (and (<= .cse1 1048575) (<= mlog_~res~0 10) .cse0 .cse2) (and .cse0 (<= mlog_~res~0 11) (<= .cse1 524287) .cse2) (and .cse0 (<= .cse1 8388607) .cse2 (<= mlog_~res~0 7)) (and .cse0 (<= .cse1 2097151) .cse2 (<= mlog_~res~0 9)) (and (<= mlog_~res~0 23) .cse0 (<= .cse1 127) .cse2) (and .cse0 (<= .cse1 67108863) (<= mlog_~res~0 4) .cse2) (and (<= mlog_~res~0 16) .cse0 .cse2 (<= .cse1 16383)) (and (<= mlog_~res~0 21) (<= .cse1 511) .cse0 .cse2) (and (<= mlog_~res~0 2) .cse0 .cse2 (<= .cse1 268435455)) (and (<= .cse1 1) (<= mlog_~res~0 29) .cse0 .cse2) (and .cse0 (<= .cse1 8191) (<= mlog_~res~0 17) .cse2) (and .cse0 .cse2 (<= mlog_~x 1)) (and (<= mlog_~res~0 25) .cse0 .cse2 (<= .cse1 31)) (and (<= .cse1 65535) .cse0 .cse2 (<= mlog_~res~0 14)) (and (<= .cse1 262143) .cse0 (<= mlog_~res~0 12) .cse2))) [2018-12-08 10:02:35,788 INFO L448 ceAbstractionStarter]: For program point L7-3(lines 7 12) no Hoare annotation was computed. [2018-12-08 10:02:35,788 INFO L451 ceAbstractionStarter]: At program point mlogENTRY(lines 3 16) the Hoare annotation is: true [2018-12-08 10:02:35,788 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 10:02:35,788 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 10:02:35,788 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 10:02:35,788 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 10:02:35,788 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 18 20) the Hoare annotation is: true [2018-12-08 10:02:35,788 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 18 20) no Hoare annotation was computed. [2018-12-08 10:02:35,788 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 18 20) no Hoare annotation was computed. [2018-12-08 10:02:35,789 INFO L444 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (<= |main_#t~nondet1| 2147483647) [2018-12-08 10:02:35,789 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-12-08 10:02:35,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 10:02:35 BoogieIcfgContainer [2018-12-08 10:02:35,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 10:02:35,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 10:02:35,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 10:02:35,802 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 10:02:35,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 10:02:15" (3/4) ... [2018-12-08 10:02:35,805 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 10:02:35,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 10:02:35,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mlog [2018-12-08 10:02:35,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 10:02:35,813 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-08 10:02:35,813 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 10:02:35,813 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 10:02:35,830 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((res <= 22 && 0 < x + 1) && x / 2 <= 255) && 0 <= res) || (((res <= 19 && 0 < x + 1) && x / 2 <= 2047) && 0 <= res)) || (((x / 2 <= 16777215 && 0 < x + 1) && res <= 6) && 0 <= res)) || 2147483647 < \old(x)) || ((x <= 2147483647 && res <= 0) && 0 <= res)) || (((x / 2 <= 7 && 0 < x + 1) && res <= 27) && 0 <= res)) || (((0 < x + 1 && res <= 8) && x / 2 <= 4194303) && 0 <= res)) || (((res <= 18 && 0 < x + 1) && 0 <= res) && x / 2 <= 4095)) || (((0 < x + 1 && res <= 13) && x / 2 <= 131071) && 0 <= res)) || (((res <= 20 && 0 < x + 1) && 0 <= res) && x / 2 <= 1023)) || (((res <= 28 && 0 < x + 1) && x / 2 <= 3) && 0 <= res)) || (((res <= 1 && 0 < x + 1) && x / 2 <= 536870911) && 0 <= res)) || (((0 < x + 1 && res <= 26) && x / 2 <= 15) && 0 <= res)) || (((0 < x + 1 && res <= 15) && x / 2 <= 32767) && 0 <= res)) || (((0 < x + 1 && res <= 24) && 0 <= res) && x / 2 <= 63)) || (((x / 2 <= 33554431 && 0 < x + 1) && res <= 5) && 0 <= res)) || (((res <= 3 && 0 < x + 1) && x / 2 <= 134217727) && 0 <= res)) || (((x / 2 <= 1048575 && res <= 10) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && res <= 11) && x / 2 <= 524287) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8388607) && 0 <= res) && res <= 7)) || (((0 < x + 1 && x / 2 <= 2097151) && 0 <= res) && res <= 9)) || (((res <= 23 && 0 < x + 1) && x / 2 <= 127) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 67108863) && res <= 4) && 0 <= res)) || (((res <= 16 && 0 < x + 1) && 0 <= res) && x / 2 <= 16383)) || (((res <= 21 && x / 2 <= 511) && 0 < x + 1) && 0 <= res)) || (((res <= 2 && 0 < x + 1) && 0 <= res) && x / 2 <= 268435455)) || (((x / 2 <= 1 && res <= 29) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8191) && res <= 17) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x <= 1)) || (((res <= 25 && 0 < x + 1) && 0 <= res) && x / 2 <= 31)) || (((x / 2 <= 65535 && 0 < x + 1) && 0 <= res) && res <= 14)) || (((x / 2 <= 262143 && 0 < x + 1) && res <= 12) && 0 <= res) [2018-12-08 10:02:35,836 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_df39fa6d-a9cd-4634-a4c2-312d3970aeea/bin-2019/uautomizer/witness.graphml [2018-12-08 10:02:35,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 10:02:35,837 INFO L168 Benchmark]: Toolchain (without parser) took 20474.45 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 507.5 MB). Free memory was 962.4 MB in the beginning and 753.0 MB in the end (delta: 209.4 MB). Peak memory consumption was 716.9 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,837 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:35,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 114.66 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.62 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:35,837 INFO L168 Benchmark]: Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:35,838 INFO L168 Benchmark]: RCFGBuilder took 146.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -120.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,838 INFO L168 Benchmark]: TraceAbstraction took 20153.44 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 416.3 MB). Free memory was 1.1 GB in the beginning and 753.0 MB in the end (delta: 317.8 MB). Peak memory consumption was 734.1 MB. Max. memory is 11.5 GB. [2018-12-08 10:02:35,838 INFO L168 Benchmark]: Witness Printer took 34.36 ms. Allocated memory is still 1.5 GB. Free memory is still 753.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 10:02:35,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 114.66 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.62 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.36 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -120.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20153.44 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 416.3 MB). Free memory was 1.1 GB in the beginning and 753.0 MB in the end (delta: 317.8 MB). Peak memory consumption was 734.1 MB. Max. memory is 11.5 GB. * Witness Printer took 34.36 ms. Allocated memory is still 1.5 GB. Free memory is still 753.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((res <= 22 && 0 < x + 1) && x / 2 <= 255) && 0 <= res) || (((res <= 19 && 0 < x + 1) && x / 2 <= 2047) && 0 <= res)) || (((x / 2 <= 16777215 && 0 < x + 1) && res <= 6) && 0 <= res)) || 2147483647 < \old(x)) || ((x <= 2147483647 && res <= 0) && 0 <= res)) || (((x / 2 <= 7 && 0 < x + 1) && res <= 27) && 0 <= res)) || (((0 < x + 1 && res <= 8) && x / 2 <= 4194303) && 0 <= res)) || (((res <= 18 && 0 < x + 1) && 0 <= res) && x / 2 <= 4095)) || (((0 < x + 1 && res <= 13) && x / 2 <= 131071) && 0 <= res)) || (((res <= 20 && 0 < x + 1) && 0 <= res) && x / 2 <= 1023)) || (((res <= 28 && 0 < x + 1) && x / 2 <= 3) && 0 <= res)) || (((res <= 1 && 0 < x + 1) && x / 2 <= 536870911) && 0 <= res)) || (((0 < x + 1 && res <= 26) && x / 2 <= 15) && 0 <= res)) || (((0 < x + 1 && res <= 15) && x / 2 <= 32767) && 0 <= res)) || (((0 < x + 1 && res <= 24) && 0 <= res) && x / 2 <= 63)) || (((x / 2 <= 33554431 && 0 < x + 1) && res <= 5) && 0 <= res)) || (((res <= 3 && 0 < x + 1) && x / 2 <= 134217727) && 0 <= res)) || (((x / 2 <= 1048575 && res <= 10) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && res <= 11) && x / 2 <= 524287) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8388607) && 0 <= res) && res <= 7)) || (((0 < x + 1 && x / 2 <= 2097151) && 0 <= res) && res <= 9)) || (((res <= 23 && 0 < x + 1) && x / 2 <= 127) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 67108863) && res <= 4) && 0 <= res)) || (((res <= 16 && 0 < x + 1) && 0 <= res) && x / 2 <= 16383)) || (((res <= 21 && x / 2 <= 511) && 0 < x + 1) && 0 <= res)) || (((res <= 2 && 0 < x + 1) && 0 <= res) && x / 2 <= 268435455)) || (((x / 2 <= 1 && res <= 29) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8191) && res <= 17) && 0 <= res)) || ((0 < x + 1 && 0 <= res) && x <= 1)) || (((res <= 25 && 0 < x + 1) && 0 <= res) && x / 2 <= 31)) || (((x / 2 <= 65535 && 0 < x + 1) && 0 <= res) && res <= 14)) || (((x / 2 <= 262143 && 0 < x + 1) && res <= 12) && 0 <= res) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 4 error locations. SAFE Result, 20.1s OverallTime, 33 OverallIterations, 31 TraceHistogramMax, 7.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 391 SDtfs, 1892 SDslu, 6443 SDs, 0 SdLazy, 3373 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4057 GetRequests, 2499 SyntacticMatches, 0 SemanticMatches, 1558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19664 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=32, 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, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 38 NumberOfFragments, 528 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 183 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 5181 NumberOfCodeBlocks, 5181 NumberOfCodeBlocksAsserted, 292 NumberOfCheckSat, 5119 ConstructedInterpolants, 0 QuantifiedInterpolants, 1635221 SizeOfPredicates, 464 NumberOfNonLiveVariables, 5597 ConjunctsInSsa, 957 ConjunctsInUnsatCore, 62 InterpolantComputations, 4 PerfectInterpolantSequences, 2295/46375 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...