./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.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_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 16:04:29,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 16:04:29,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 16:04:29,289 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 16:04:29,290 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 16:04:29,290 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 16:04:29,291 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 16:04:29,292 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 16:04:29,293 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 16:04:29,293 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 16:04:29,293 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 16:04:29,294 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 16:04:29,294 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 16:04:29,294 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 16:04:29,295 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 16:04:29,295 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 16:04:29,296 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 16:04:29,297 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 16:04:29,298 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 16:04:29,298 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 16:04:29,299 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 16:04:29,300 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 16:04:29,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 16:04:29,301 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 16:04:29,301 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 16:04:29,301 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 16:04:29,302 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 16:04:29,302 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 16:04:29,303 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 16:04:29,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 16:04:29,304 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 16:04:29,304 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 16:04:29,304 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 16:04:29,304 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 16:04:29,305 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 16:04:29,305 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 16:04:29,305 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-01 16:04:29,312 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 16:04:29,313 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 16:04:29,313 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 16:04:29,313 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 16:04:29,314 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 16:04:29,314 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 16:04:29,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 16:04:29,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 16:04:29,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 16:04:29,315 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 16:04:29,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 16:04:29,316 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 16:04:29,316 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 16:04:29,316 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 16:04:29,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 16:04:29,316 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_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2018-12-01 16:04:29,333 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 16:04:29,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 16:04:29,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 16:04:29,343 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 16:04:29,343 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 16:04:29,344 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-01 16:04:29,376 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/data/c367c8c43/7183e84010514b42809739f0968d34c4/FLAG776548e04 [2018-12-01 16:04:29,799 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 16:04:29,799 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-01 16:04:29,803 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/data/c367c8c43/7183e84010514b42809739f0968d34c4/FLAG776548e04 [2018-12-01 16:04:29,811 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/data/c367c8c43/7183e84010514b42809739f0968d34c4 [2018-12-01 16:04:29,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 16:04:29,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 16:04:29,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 16:04:29,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 16:04:29,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 16:04:29,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e0d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29, skipping insertion in model container [2018-12-01 16:04:29,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 16:04:29,830 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 16:04:29,911 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:04:29,913 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 16:04:29,922 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 16:04:29,929 INFO L195 MainTranslator]: Completed translation [2018-12-01 16:04:29,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29 WrapperNode [2018-12-01 16:04:29,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 16:04:29,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 16:04:29,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 16:04:29,930 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 16:04:29,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 16:04:29,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 16:04:29,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 16:04:29,942 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 16:04:29,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... [2018-12-01 16:04:29,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 16:04:29,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 16:04:29,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 16:04:29,954 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 16:04:29,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 16:04:30,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 16:04:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 16:04:30,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 16:04:30,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 16:04:30,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 16:04:30,102 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 16:04:30,102 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-01 16:04:30,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:04:30 BoogieIcfgContainer [2018-12-01 16:04:30,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 16:04:30,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 16:04:30,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 16:04:30,106 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 16:04:30,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 04:04:29" (1/3) ... [2018-12-01 16:04:30,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ed1ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:04:30, skipping insertion in model container [2018-12-01 16:04:30,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 04:04:29" (2/3) ... [2018-12-01 16:04:30,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ed1ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 04:04:30, skipping insertion in model container [2018-12-01 16:04:30,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:04:30" (3/3) ... [2018-12-01 16:04:30,109 INFO L112 eAbstractionObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-12-01 16:04:30,115 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 16:04:30,120 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-12-01 16:04:30,133 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-12-01 16:04:30,157 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 16:04:30,158 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 16:04:30,158 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 16:04:30,158 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 16:04:30,158 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 16:04:30,158 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 16:04:30,159 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 16:04:30,159 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 16:04:30,159 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 16:04:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-12-01 16:04:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-01 16:04:30,175 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,176 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,177 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash -623924281, now seen corresponding path program 1 times [2018-12-01 16:04:30,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:04:30,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 16:04:30,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 16:04:30,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 16:04:30,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,272 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-12-01 16:04:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,313 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-12-01 16:04:30,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 16:04:30,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-12-01 16:04:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,320 INFO L225 Difference]: With dead ends: 41 [2018-12-01 16:04:30,320 INFO L226 Difference]: Without dead ends: 29 [2018-12-01 16:04:30,322 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-01 16:04:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2018-12-01 16:04:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-01 16:04:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-12-01 16:04:30,342 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 8 [2018-12-01 16:04:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,342 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2018-12-01 16:04:30,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 16:04:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2018-12-01 16:04:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-01 16:04:30,343 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,343 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,343 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2133183819, now seen corresponding path program 1 times [2018-12-01 16:04:30,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:04:30,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 16:04:30,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 16:04:30,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 16:04:30,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,361 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2018-12-01 16:04:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,373 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-12-01 16:04:30,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 16:04:30,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-01 16:04:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,374 INFO L225 Difference]: With dead ends: 32 [2018-12-01 16:04:30,374 INFO L226 Difference]: Without dead ends: 30 [2018-12-01 16:04:30,374 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-01 16:04:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-12-01 16:04:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-01 16:04:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-01 16:04:30,377 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2018-12-01 16:04:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,377 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-01 16:04:30,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 16:04:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-01 16:04:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-01 16:04:30,377 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,378 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,378 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1704189008, now seen corresponding path program 1 times [2018-12-01 16:04:30,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:04:30,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 16:04:30,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 16:04:30,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 16:04:30,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,391 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 3 states. [2018-12-01 16:04:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,403 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-12-01 16:04:30,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 16:04:30,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-01 16:04:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,404 INFO L225 Difference]: With dead ends: 42 [2018-12-01 16:04:30,404 INFO L226 Difference]: Without dead ends: 23 [2018-12-01 16:04:30,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-01 16:04:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-12-01 16:04:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-01 16:04:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-01 16:04:30,408 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2018-12-01 16:04:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,408 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-01 16:04:30,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 16:04:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-01 16:04:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-01 16:04:30,408 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,408 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,409 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1290251757, now seen corresponding path program 1 times [2018-12-01 16:04:30,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:04:30,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 16:04:30,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 16:04:30,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 16:04:30,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,427 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 3 states. [2018-12-01 16:04:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,435 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-01 16:04:30,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 16:04:30,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-12-01 16:04:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,436 INFO L225 Difference]: With dead ends: 22 [2018-12-01 16:04:30,436 INFO L226 Difference]: Without dead ends: 21 [2018-12-01 16:04:30,437 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-01 16:04:30,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-01 16:04:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-01 16:04:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-01 16:04:30,440 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2018-12-01 16:04:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,440 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-01 16:04:30,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 16:04:30,440 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-01 16:04:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-01 16:04:30,440 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,440 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,441 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2067163616, now seen corresponding path program 1 times [2018-12-01 16:04:30,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,461 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:30,461 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:30,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,512 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:30,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-01 16:04:30,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-01 16:04:30,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 16:04:30,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 16:04:30,512 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 4 states. [2018-12-01 16:04:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,537 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-12-01 16:04:30,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 16:04:30,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-12-01 16:04:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,538 INFO L225 Difference]: With dead ends: 41 [2018-12-01 16:04:30,538 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 16:04:30,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 16:04:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 16:04:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2018-12-01 16:04:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-01 16:04:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-12-01 16:04:30,541 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2018-12-01 16:04:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,541 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-12-01 16:04:30,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-01 16:04:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-12-01 16:04:30,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 16:04:30,542 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,542 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,542 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2025624681, now seen corresponding path program 1 times [2018-12-01 16:04:30,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-01 16:04:30,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 16:04:30,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 16:04:30,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-01 16:04:30,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 16:04:30,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,555 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 3 states. [2018-12-01 16:04:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,564 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-12-01 16:04:30,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 16:04:30,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-12-01 16:04:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,564 INFO L225 Difference]: With dead ends: 37 [2018-12-01 16:04:30,564 INFO L226 Difference]: Without dead ends: 36 [2018-12-01 16:04:30,565 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 16:04:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-01 16:04:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-12-01 16:04:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-01 16:04:30,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-12-01 16:04:30,567 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2018-12-01 16:04:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,568 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-12-01 16:04:30,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-01 16:04:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-12-01 16:04:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-01 16:04:30,568 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,568 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,568 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2025809379, now seen corresponding path program 1 times [2018-12-01 16:04:30,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:30,582 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:30,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:30,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:30,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-12-01 16:04:30,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 16:04:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 16:04:30,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:04:30,632 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 6 states. [2018-12-01 16:04:30,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,653 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2018-12-01 16:04:30,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 16:04:30,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-12-01 16:04:30,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,653 INFO L225 Difference]: With dead ends: 64 [2018-12-01 16:04:30,653 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 16:04:30,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:04:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 16:04:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2018-12-01 16:04:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-01 16:04:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-12-01 16:04:30,657 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 16 [2018-12-01 16:04:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,657 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-12-01 16:04:30,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 16:04:30,657 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-12-01 16:04:30,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 16:04:30,657 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,658 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,658 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -432629319, now seen corresponding path program 2 times [2018-12-01 16:04:30,658 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:30,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:30,683 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:30,691 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:30,697 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:30,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:30,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:30,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:30,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-12-01 16:04:30,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-01 16:04:30,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-01 16:04:30,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-01 16:04:30,716 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-12-01 16:04:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,739 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-12-01 16:04:30,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-01 16:04:30,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-12-01 16:04:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,740 INFO L225 Difference]: With dead ends: 40 [2018-12-01 16:04:30,740 INFO L226 Difference]: Without dead ends: 39 [2018-12-01 16:04:30,740 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-12-01 16:04:30,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-01 16:04:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2018-12-01 16:04:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-01 16:04:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-12-01 16:04:30,743 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-12-01 16:04:30,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,743 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-12-01 16:04:30,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-01 16:04:30,743 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-12-01 16:04:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-01 16:04:30,744 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,744 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,744 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,744 INFO L82 PathProgramCache]: Analyzing trace with hash 305055378, now seen corresponding path program 3 times [2018-12-01 16:04:30,744 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:30,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:30,775 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:30,781 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:30,786 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 16:04:30,786 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:30,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:30,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-01 16:04:30,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 16:04:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 16:04:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:04:30,805 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-12-01 16:04:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,834 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2018-12-01 16:04:30,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 16:04:30,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-12-01 16:04:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,835 INFO L225 Difference]: With dead ends: 88 [2018-12-01 16:04:30,836 INFO L226 Difference]: Without dead ends: 86 [2018-12-01 16:04:30,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:04:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-12-01 16:04:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2018-12-01 16:04:30,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-12-01 16:04:30,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 91 transitions. [2018-12-01 16:04:30,842 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 91 transitions. Word has length 26 [2018-12-01 16:04:30,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,843 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 91 transitions. [2018-12-01 16:04:30,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 16:04:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 91 transitions. [2018-12-01 16:04:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-01 16:04:30,843 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,844 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,844 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash -847369045, now seen corresponding path program 4 times [2018-12-01 16:04:30,844 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:30,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:30,883 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:30,891 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:30,898 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:30,899 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:30,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:30,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:30,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-01 16:04:30,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 16:04:30,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 16:04:30,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-01 16:04:30,930 INFO L87 Difference]: Start difference. First operand 80 states and 91 transitions. Second operand 7 states. [2018-12-01 16:04:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:30,973 INFO L93 Difference]: Finished difference Result 148 states and 178 transitions. [2018-12-01 16:04:30,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 16:04:30,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-12-01 16:04:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:30,975 INFO L225 Difference]: With dead ends: 148 [2018-12-01 16:04:30,975 INFO L226 Difference]: Without dead ends: 146 [2018-12-01 16:04:30,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-12-01 16:04:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-12-01 16:04:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 95. [2018-12-01 16:04:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-12-01 16:04:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2018-12-01 16:04:30,984 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 32 [2018-12-01 16:04:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:30,984 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2018-12-01 16:04:30,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 16:04:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2018-12-01 16:04:30,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-01 16:04:30,985 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:30,985 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:30,985 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:30,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash 155374504, now seen corresponding path program 2 times [2018-12-01 16:04:30,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:30,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:30,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,986 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:30,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 16:04:31,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,014 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,023 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:31,030 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:31,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:31,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 16:04:31,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-01 16:04:31,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 16:04:31,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 16:04:31,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:04:31,053 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 6 states. [2018-12-01 16:04:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,072 INFO L93 Difference]: Finished difference Result 181 states and 210 transitions. [2018-12-01 16:04:31,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 16:04:31,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-12-01 16:04:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,074 INFO L225 Difference]: With dead ends: 181 [2018-12-01 16:04:31,074 INFO L226 Difference]: Without dead ends: 105 [2018-12-01 16:04:31,074 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-12-01 16:04:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-12-01 16:04:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2018-12-01 16:04:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-12-01 16:04:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2018-12-01 16:04:31,080 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 34 [2018-12-01 16:04:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,081 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2018-12-01 16:04:31,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 16:04:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2018-12-01 16:04:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-01 16:04:31,082 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,082 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,082 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2007292932, now seen corresponding path program 5 times [2018-12-01 16:04:31,082 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:31,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,125 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,130 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:31,138 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-01 16:04:31,138 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:31,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,146 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-01 16:04:31,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-01 16:04:31,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-01 16:04:31,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-01 16:04:31,161 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2018-12-01 16:04:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,200 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2018-12-01 16:04:31,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-01 16:04:31,200 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2018-12-01 16:04:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,201 INFO L225 Difference]: With dead ends: 185 [2018-12-01 16:04:31,201 INFO L226 Difference]: Without dead ends: 183 [2018-12-01 16:04:31,201 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-12-01 16:04:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-12-01 16:04:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 116. [2018-12-01 16:04:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-12-01 16:04:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 133 transitions. [2018-12-01 16:04:31,206 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 133 transitions. Word has length 38 [2018-12-01 16:04:31,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,207 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 133 transitions. [2018-12-01 16:04:31,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-01 16:04:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 133 transitions. [2018-12-01 16:04:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-01 16:04:31,207 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,207 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,207 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,208 INFO L82 PathProgramCache]: Analyzing trace with hash -998567743, now seen corresponding path program 3 times [2018-12-01 16:04:31,208 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:31,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-01 16:04:31,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,240 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,246 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:31,252 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-01 16:04:31,252 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:31,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-12-01 16:04:31,289 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 10 [2018-12-01 16:04:31,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 16:04:31,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 16:04:31,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-01 16:04:31,290 INFO L87 Difference]: Start difference. First operand 116 states and 133 transitions. Second operand 10 states. [2018-12-01 16:04:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,314 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2018-12-01 16:04:31,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 16:04:31,315 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2018-12-01 16:04:31,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,315 INFO L225 Difference]: With dead ends: 156 [2018-12-01 16:04:31,315 INFO L226 Difference]: Without dead ends: 65 [2018-12-01 16:04:31,315 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-01 16:04:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-12-01 16:04:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2018-12-01 16:04:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-12-01 16:04:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-12-01 16:04:31,318 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 40 [2018-12-01 16:04:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,318 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-12-01 16:04:31,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 16:04:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-12-01 16:04:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-12-01 16:04:31,319 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,319 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,319 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,319 INFO L82 PathProgramCache]: Analyzing trace with hash 869721245, now seen corresponding path program 6 times [2018-12-01 16:04:31,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:31,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,353 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,362 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:31,370 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-01 16:04:31,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:31,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-01 16:04:31,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 16:04:31,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 16:04:31,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-01 16:04:31,391 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 9 states. [2018-12-01 16:04:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,442 INFO L93 Difference]: Finished difference Result 188 states and 232 transitions. [2018-12-01 16:04:31,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 16:04:31,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-12-01 16:04:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,443 INFO L225 Difference]: With dead ends: 188 [2018-12-01 16:04:31,443 INFO L226 Difference]: Without dead ends: 186 [2018-12-01 16:04:31,443 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-12-01 16:04:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-12-01 16:04:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 176. [2018-12-01 16:04:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-12-01 16:04:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 202 transitions. [2018-12-01 16:04:31,448 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 202 transitions. Word has length 44 [2018-12-01 16:04:31,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,448 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 202 transitions. [2018-12-01 16:04:31,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 16:04:31,449 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 202 transitions. [2018-12-01 16:04:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-01 16:04:31,449 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,449 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,449 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1375491702, now seen corresponding path program 7 times [2018-12-01 16:04:31,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,450 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:31,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,500 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-01 16:04:31,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 16:04:31,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 16:04:31,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-01 16:04:31,540 INFO L87 Difference]: Start difference. First operand 176 states and 202 transitions. Second operand 10 states. [2018-12-01 16:04:31,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,597 INFO L93 Difference]: Finished difference Result 328 states and 400 transitions. [2018-12-01 16:04:31,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 16:04:31,597 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2018-12-01 16:04:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,598 INFO L225 Difference]: With dead ends: 328 [2018-12-01 16:04:31,598 INFO L226 Difference]: Without dead ends: 326 [2018-12-01 16:04:31,598 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-12-01 16:04:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2018-12-01 16:04:31,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 197. [2018-12-01 16:04:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-12-01 16:04:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2018-12-01 16:04:31,606 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 50 [2018-12-01 16:04:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,606 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2018-12-01 16:04:31,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 16:04:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2018-12-01 16:04:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-12-01 16:04:31,613 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,613 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,614 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,614 INFO L82 PathProgramCache]: Analyzing trace with hash -139378289, now seen corresponding path program 8 times [2018-12-01 16:04:31,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:31,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,670 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,676 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:31,682 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:31,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:31,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:31,706 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-01 16:04:31,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 16:04:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 16:04:31,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-01 16:04:31,707 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand 11 states. [2018-12-01 16:04:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,758 INFO L93 Difference]: Finished difference Result 371 states and 454 transitions. [2018-12-01 16:04:31,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 16:04:31,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2018-12-01 16:04:31,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,759 INFO L225 Difference]: With dead ends: 371 [2018-12-01 16:04:31,759 INFO L226 Difference]: Without dead ends: 369 [2018-12-01 16:04:31,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-01 16:04:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-12-01 16:04:31,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 218. [2018-12-01 16:04:31,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-12-01 16:04:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 252 transitions. [2018-12-01 16:04:31,766 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 252 transitions. Word has length 56 [2018-12-01 16:04:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,766 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 252 transitions. [2018-12-01 16:04:31,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 16:04:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 252 transitions. [2018-12-01 16:04:31,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-12-01 16:04:31,767 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,767 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,767 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,767 INFO L82 PathProgramCache]: Analyzing trace with hash 583444998, now seen corresponding path program 4 times [2018-12-01 16:04:31,767 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:31,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 91 proven. 57 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-12-01 16:04:31,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:31,799 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:31,805 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:31,818 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:31,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:31,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 58 proven. 102 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-12-01 16:04:31,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:31,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2018-12-01 16:04:31,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 16:04:31,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 16:04:31,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-01 16:04:31,884 INFO L87 Difference]: Start difference. First operand 218 states and 252 transitions. Second operand 15 states. [2018-12-01 16:04:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:31,936 INFO L93 Difference]: Finished difference Result 519 states and 620 transitions. [2018-12-01 16:04:31,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-01 16:04:31,936 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2018-12-01 16:04:31,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:31,937 INFO L225 Difference]: With dead ends: 519 [2018-12-01 16:04:31,937 INFO L226 Difference]: Without dead ends: 338 [2018-12-01 16:04:31,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-01 16:04:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2018-12-01 16:04:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 329. [2018-12-01 16:04:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-12-01 16:04:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 381 transitions. [2018-12-01 16:04:31,948 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 381 transitions. Word has length 58 [2018-12-01 16:04:31,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:31,948 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 381 transitions. [2018-12-01 16:04:31,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 16:04:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 381 transitions. [2018-12-01 16:04:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-12-01 16:04:31,949 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:31,949 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:31,949 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:31,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:31,949 INFO L82 PathProgramCache]: Analyzing trace with hash 155563496, now seen corresponding path program 9 times [2018-12-01 16:04:31,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:31,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:31,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:31,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:32,012 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:32,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:32,030 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-01 16:04:32,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:32,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:32,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-01 16:04:32,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-01 16:04:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-01 16:04:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-01 16:04:32,062 INFO L87 Difference]: Start difference. First operand 329 states and 381 transitions. Second operand 12 states. [2018-12-01 16:04:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:32,155 INFO L93 Difference]: Finished difference Result 633 states and 781 transitions. [2018-12-01 16:04:32,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-01 16:04:32,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2018-12-01 16:04:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:32,158 INFO L225 Difference]: With dead ends: 633 [2018-12-01 16:04:32,158 INFO L226 Difference]: Without dead ends: 631 [2018-12-01 16:04:32,158 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-12-01 16:04:32,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2018-12-01 16:04:32,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 368. [2018-12-01 16:04:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2018-12-01 16:04:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 427 transitions. [2018-12-01 16:04:32,171 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 427 transitions. Word has length 62 [2018-12-01 16:04:32,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:32,171 INFO L480 AbstractCegarLoop]: Abstraction has 368 states and 427 transitions. [2018-12-01 16:04:32,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-01 16:04:32,171 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 427 transitions. [2018-12-01 16:04:32,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-12-01 16:04:32,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:32,172 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:32,173 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:32,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1388168065, now seen corresponding path program 10 times [2018-12-01 16:04:32,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:32,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:32,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:32,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:32,255 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:32,261 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:32,270 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:32,270 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:32,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:32,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-01 16:04:32,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-01 16:04:32,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-01 16:04:32,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-01 16:04:32,307 INFO L87 Difference]: Start difference. First operand 368 states and 427 transitions. Second operand 13 states. [2018-12-01 16:04:32,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:32,384 INFO L93 Difference]: Finished difference Result 712 states and 880 transitions. [2018-12-01 16:04:32,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-01 16:04:32,385 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 68 [2018-12-01 16:04:32,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:32,387 INFO L225 Difference]: With dead ends: 712 [2018-12-01 16:04:32,387 INFO L226 Difference]: Without dead ends: 710 [2018-12-01 16:04:32,387 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-12-01 16:04:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2018-12-01 16:04:32,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 407. [2018-12-01 16:04:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-12-01 16:04:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 473 transitions. [2018-12-01 16:04:32,402 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 473 transitions. Word has length 68 [2018-12-01 16:04:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:32,402 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 473 transitions. [2018-12-01 16:04:32,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-01 16:04:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 473 transitions. [2018-12-01 16:04:32,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-01 16:04:32,403 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:32,403 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:32,403 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:32,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash -254707110, now seen corresponding path program 11 times [2018-12-01 16:04:32,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:32,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:32,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,404 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:32,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:32,485 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:32,492 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:32,502 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-01 16:04:32,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:32,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,526 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:32,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-01 16:04:32,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 16:04:32,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 16:04:32,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-01 16:04:32,527 INFO L87 Difference]: Start difference. First operand 407 states and 473 transitions. Second operand 14 states. [2018-12-01 16:04:32,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:32,609 INFO L93 Difference]: Finished difference Result 791 states and 979 transitions. [2018-12-01 16:04:32,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-01 16:04:32,609 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 74 [2018-12-01 16:04:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:32,611 INFO L225 Difference]: With dead ends: 791 [2018-12-01 16:04:32,611 INFO L226 Difference]: Without dead ends: 789 [2018-12-01 16:04:32,612 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-01 16:04:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2018-12-01 16:04:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 446. [2018-12-01 16:04:32,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-12-01 16:04:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 519 transitions. [2018-12-01 16:04:32,621 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 519 transitions. Word has length 74 [2018-12-01 16:04:32,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:32,621 INFO L480 AbstractCegarLoop]: Abstraction has 446 states and 519 transitions. [2018-12-01 16:04:32,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 16:04:32,621 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 519 transitions. [2018-12-01 16:04:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-12-01 16:04:32,622 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:32,622 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:32,622 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:32,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:32,623 INFO L82 PathProgramCache]: Analyzing trace with hash -101913997, now seen corresponding path program 12 times [2018-12-01 16:04:32,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:32,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:32,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:32,697 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:32,703 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:32,718 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-01 16:04:32,718 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:32,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:32,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-01 16:04:32,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 16:04:32,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 16:04:32,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-01 16:04:32,756 INFO L87 Difference]: Start difference. First operand 446 states and 519 transitions. Second operand 15 states. [2018-12-01 16:04:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:32,845 INFO L93 Difference]: Finished difference Result 870 states and 1078 transitions. [2018-12-01 16:04:32,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-01 16:04:32,845 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2018-12-01 16:04:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:32,846 INFO L225 Difference]: With dead ends: 870 [2018-12-01 16:04:32,847 INFO L226 Difference]: Without dead ends: 868 [2018-12-01 16:04:32,847 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-01 16:04:32,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2018-12-01 16:04:32,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 485. [2018-12-01 16:04:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-12-01 16:04:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 565 transitions. [2018-12-01 16:04:32,860 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 565 transitions. Word has length 80 [2018-12-01 16:04:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:32,860 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 565 transitions. [2018-12-01 16:04:32,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 16:04:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 565 transitions. [2018-12-01 16:04:32,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-12-01 16:04:32,860 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:32,860 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:32,861 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:32,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:32,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1731208140, now seen corresponding path program 13 times [2018-12-01 16:04:32,861 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:32,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:32,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:32,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:32,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:32,957 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:32,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:32,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:33,007 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:33,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-01 16:04:33,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-01 16:04:33,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-01 16:04:33,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-01 16:04:33,008 INFO L87 Difference]: Start difference. First operand 485 states and 565 transitions. Second operand 16 states. [2018-12-01 16:04:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:33,119 INFO L93 Difference]: Finished difference Result 949 states and 1177 transitions. [2018-12-01 16:04:33,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-01 16:04:33,120 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 86 [2018-12-01 16:04:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:33,122 INFO L225 Difference]: With dead ends: 949 [2018-12-01 16:04:33,123 INFO L226 Difference]: Without dead ends: 947 [2018-12-01 16:04:33,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-12-01 16:04:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2018-12-01 16:04:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 524. [2018-12-01 16:04:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-12-01 16:04:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 611 transitions. [2018-12-01 16:04:33,134 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 611 transitions. Word has length 86 [2018-12-01 16:04:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:33,135 INFO L480 AbstractCegarLoop]: Abstraction has 524 states and 611 transitions. [2018-12-01 16:04:33,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-01 16:04:33,135 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 611 transitions. [2018-12-01 16:04:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-12-01 16:04:33,135 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:33,135 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 8, 8, 8, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:33,135 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:33,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:33,136 INFO L82 PathProgramCache]: Analyzing trace with hash 694950769, now seen corresponding path program 5 times [2018-12-01 16:04:33,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:33,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:33,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:33,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:33,212 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-12-01 16:04:33,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:33,212 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:33,218 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:33,239 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-12-01 16:04:33,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:33,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 178 proven. 184 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-12-01 16:04:33,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:33,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-01 16:04:33,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 16:04:33,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 16:04:33,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-01 16:04:33,267 INFO L87 Difference]: Start difference. First operand 524 states and 611 transitions. Second operand 11 states. [2018-12-01 16:04:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:33,307 INFO L93 Difference]: Finished difference Result 1009 states and 1184 transitions. [2018-12-01 16:04:33,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-01 16:04:33,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-12-01 16:04:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:33,309 INFO L225 Difference]: With dead ends: 1009 [2018-12-01 16:04:33,309 INFO L226 Difference]: Without dead ends: 534 [2018-12-01 16:04:33,310 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-12-01 16:04:33,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-12-01 16:04:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2018-12-01 16:04:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-12-01 16:04:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 617 transitions. [2018-12-01 16:04:33,320 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 617 transitions. Word has length 88 [2018-12-01 16:04:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:33,320 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 617 transitions. [2018-12-01 16:04:33,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 16:04:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 617 transitions. [2018-12-01 16:04:33,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-12-01 16:04:33,320 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:33,320 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:33,321 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:33,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:33,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1030698597, now seen corresponding path program 14 times [2018-12-01 16:04:33,321 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:33,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:33,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:33,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:33,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:33,450 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:33,458 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:33,470 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:33,470 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:33,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:33,504 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:33,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-12-01 16:04:33,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-01 16:04:33,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-01 16:04:33,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-01 16:04:33,505 INFO L87 Difference]: Start difference. First operand 530 states and 617 transitions. Second operand 17 states. [2018-12-01 16:04:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:33,606 INFO L93 Difference]: Finished difference Result 1034 states and 1282 transitions. [2018-12-01 16:04:33,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-01 16:04:33,607 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2018-12-01 16:04:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:33,609 INFO L225 Difference]: With dead ends: 1034 [2018-12-01 16:04:33,609 INFO L226 Difference]: Without dead ends: 1032 [2018-12-01 16:04:33,610 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-12-01 16:04:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2018-12-01 16:04:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 569. [2018-12-01 16:04:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2018-12-01 16:04:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 663 transitions. [2018-12-01 16:04:33,625 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 663 transitions. Word has length 92 [2018-12-01 16:04:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:33,625 INFO L480 AbstractCegarLoop]: Abstraction has 569 states and 663 transitions. [2018-12-01 16:04:33,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-01 16:04:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 663 transitions. [2018-12-01 16:04:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-12-01 16:04:33,626 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:33,627 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 9, 9, 9, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:33,627 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:33,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1815145418, now seen corresponding path program 6 times [2018-12-01 16:04:33,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:33,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:33,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:33,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 199 proven. 234 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-12-01 16:04:33,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:33,687 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:33,695 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:33,710 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2018-12-01 16:04:33,711 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:33,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 245 proven. 123 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2018-12-01 16:04:33,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:33,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2018-12-01 16:04:33,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-01 16:04:33,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-01 16:04:33,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-01 16:04:33,816 INFO L87 Difference]: Start difference. First operand 569 states and 663 transitions. Second operand 20 states. [2018-12-01 16:04:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:33,871 INFO L93 Difference]: Finished difference Result 1218 states and 1439 transitions. [2018-12-01 16:04:33,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-01 16:04:33,871 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2018-12-01 16:04:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:33,872 INFO L225 Difference]: With dead ends: 1218 [2018-12-01 16:04:33,873 INFO L226 Difference]: Without dead ends: 704 [2018-12-01 16:04:33,873 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-01 16:04:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2018-12-01 16:04:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 689. [2018-12-01 16:04:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2018-12-01 16:04:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 802 transitions. [2018-12-01 16:04:33,883 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 802 transitions. Word has length 94 [2018-12-01 16:04:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:33,884 INFO L480 AbstractCegarLoop]: Abstraction has 689 states and 802 transitions. [2018-12-01 16:04:33,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-01 16:04:33,884 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 802 transitions. [2018-12-01 16:04:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-12-01 16:04:33,884 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:33,884 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:33,884 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:33,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:33,885 INFO L82 PathProgramCache]: Analyzing trace with hash -164482498, now seen corresponding path program 15 times [2018-12-01 16:04:33,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:33,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:33,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:33,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:33,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:33,986 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:33,995 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:34,009 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-01 16:04:34,009 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:34,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,044 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:34,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-12-01 16:04:34,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-01 16:04:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-01 16:04:34,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-01 16:04:34,045 INFO L87 Difference]: Start difference. First operand 689 states and 802 transitions. Second operand 18 states. [2018-12-01 16:04:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:34,158 INFO L93 Difference]: Finished difference Result 1347 states and 1672 transitions. [2018-12-01 16:04:34,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-01 16:04:34,158 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 98 [2018-12-01 16:04:34,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:34,160 INFO L225 Difference]: With dead ends: 1347 [2018-12-01 16:04:34,160 INFO L226 Difference]: Without dead ends: 1345 [2018-12-01 16:04:34,161 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-01 16:04:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2018-12-01 16:04:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 740. [2018-12-01 16:04:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-12-01 16:04:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 862 transitions. [2018-12-01 16:04:34,176 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 862 transitions. Word has length 98 [2018-12-01 16:04:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:34,176 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 862 transitions. [2018-12-01 16:04:34,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-01 16:04:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 862 transitions. [2018-12-01 16:04:34,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-12-01 16:04:34,177 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:34,177 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:34,177 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:34,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:34,177 INFO L82 PathProgramCache]: Analyzing trace with hash 682960727, now seen corresponding path program 16 times [2018-12-01 16:04:34,177 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:34,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:34,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:34,178 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:34,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:34,319 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:34,325 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:34,336 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:34,336 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:34,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:34,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-01 16:04:34,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-01 16:04:34,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-01 16:04:34,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-01 16:04:34,362 INFO L87 Difference]: Start difference. First operand 740 states and 862 transitions. Second operand 19 states. [2018-12-01 16:04:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:34,466 INFO L93 Difference]: Finished difference Result 1450 states and 1801 transitions. [2018-12-01 16:04:34,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-01 16:04:34,467 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 104 [2018-12-01 16:04:34,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:34,469 INFO L225 Difference]: With dead ends: 1450 [2018-12-01 16:04:34,469 INFO L226 Difference]: Without dead ends: 1448 [2018-12-01 16:04:34,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-01 16:04:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2018-12-01 16:04:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 791. [2018-12-01 16:04:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-12-01 16:04:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 922 transitions. [2018-12-01 16:04:34,482 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 922 transitions. Word has length 104 [2018-12-01 16:04:34,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:34,483 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 922 transitions. [2018-12-01 16:04:34,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-01 16:04:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 922 transitions. [2018-12-01 16:04:34,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-12-01 16:04:34,484 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:34,484 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:34,484 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:34,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:34,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1927816624, now seen corresponding path program 17 times [2018-12-01 16:04:34,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:34,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:34,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:34,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:34,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:34,631 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:34,637 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:34,653 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-01 16:04:34,653 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:34,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:34,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-01 16:04:34,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-01 16:04:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-01 16:04:34,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-01 16:04:34,681 INFO L87 Difference]: Start difference. First operand 791 states and 922 transitions. Second operand 20 states. [2018-12-01 16:04:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:34,782 INFO L93 Difference]: Finished difference Result 1553 states and 1930 transitions. [2018-12-01 16:04:34,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-01 16:04:34,782 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 110 [2018-12-01 16:04:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:34,784 INFO L225 Difference]: With dead ends: 1553 [2018-12-01 16:04:34,785 INFO L226 Difference]: Without dead ends: 1551 [2018-12-01 16:04:34,785 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-12-01 16:04:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2018-12-01 16:04:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 842. [2018-12-01 16:04:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2018-12-01 16:04:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 982 transitions. [2018-12-01 16:04:34,797 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 982 transitions. Word has length 110 [2018-12-01 16:04:34,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:34,798 INFO L480 AbstractCegarLoop]: Abstraction has 842 states and 982 transitions. [2018-12-01 16:04:34,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-01 16:04:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 982 transitions. [2018-12-01 16:04:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-12-01 16:04:34,798 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:34,798 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:34,799 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:34,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:34,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1569768119, now seen corresponding path program 18 times [2018-12-01 16:04:34,799 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:34,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:34,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:34,799 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:34,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:34,939 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:34,939 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:34,947 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:34,965 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-01 16:04:34,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:34,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:34,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:34,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-12-01 16:04:34,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-01 16:04:34,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-01 16:04:34,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-01 16:04:34,992 INFO L87 Difference]: Start difference. First operand 842 states and 982 transitions. Second operand 21 states. [2018-12-01 16:04:35,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:35,107 INFO L93 Difference]: Finished difference Result 1656 states and 2059 transitions. [2018-12-01 16:04:35,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-01 16:04:35,107 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 116 [2018-12-01 16:04:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:35,109 INFO L225 Difference]: With dead ends: 1656 [2018-12-01 16:04:35,109 INFO L226 Difference]: Without dead ends: 1654 [2018-12-01 16:04:35,110 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-12-01 16:04:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2018-12-01 16:04:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 893. [2018-12-01 16:04:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2018-12-01 16:04:35,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1042 transitions. [2018-12-01 16:04:35,122 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1042 transitions. Word has length 116 [2018-12-01 16:04:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:35,122 INFO L480 AbstractCegarLoop]: Abstraction has 893 states and 1042 transitions. [2018-12-01 16:04:35,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-01 16:04:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1042 transitions. [2018-12-01 16:04:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-12-01 16:04:35,123 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:35,123 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 11, 11, 11, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:35,123 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:35,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash 605044514, now seen corresponding path program 7 times [2018-12-01 16:04:35,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:35,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:35,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,124 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:35,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 333 proven. 352 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-01 16:04:35,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:35,207 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:35,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:35,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 333 proven. 352 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-01 16:04:35,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:35,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-01 16:04:35,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-01 16:04:35,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-01 16:04:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-01 16:04:35,261 INFO L87 Difference]: Start difference. First operand 893 states and 1042 transitions. Second operand 14 states. [2018-12-01 16:04:35,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:35,303 INFO L93 Difference]: Finished difference Result 1729 states and 2028 transitions. [2018-12-01 16:04:35,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-01 16:04:35,304 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2018-12-01 16:04:35,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:35,305 INFO L225 Difference]: With dead ends: 1729 [2018-12-01 16:04:35,305 INFO L226 Difference]: Without dead ends: 903 [2018-12-01 16:04:35,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-12-01 16:04:35,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2018-12-01 16:04:35,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 899. [2018-12-01 16:04:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2018-12-01 16:04:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1048 transitions. [2018-12-01 16:04:35,319 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1048 transitions. Word has length 118 [2018-12-01 16:04:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:35,319 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1048 transitions. [2018-12-01 16:04:35,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-01 16:04:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1048 transitions. [2018-12-01 16:04:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-12-01 16:04:35,320 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:35,320 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:35,320 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:35,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:35,320 INFO L82 PathProgramCache]: Analyzing trace with hash 497188386, now seen corresponding path program 19 times [2018-12-01 16:04:35,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:35,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:35,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:35,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:35,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:35,476 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:35,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:35,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:35,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:35,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-01 16:04:35,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-01 16:04:35,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-01 16:04:35,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-01 16:04:35,528 INFO L87 Difference]: Start difference. First operand 899 states and 1048 transitions. Second operand 22 states. [2018-12-01 16:04:35,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:35,642 INFO L93 Difference]: Finished difference Result 1765 states and 2194 transitions. [2018-12-01 16:04:35,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-01 16:04:35,643 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 122 [2018-12-01 16:04:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:35,645 INFO L225 Difference]: With dead ends: 1765 [2018-12-01 16:04:35,645 INFO L226 Difference]: Without dead ends: 1763 [2018-12-01 16:04:35,646 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-01 16:04:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2018-12-01 16:04:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 950. [2018-12-01 16:04:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 950 states. [2018-12-01 16:04:35,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1108 transitions. [2018-12-01 16:04:35,662 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1108 transitions. Word has length 122 [2018-12-01 16:04:35,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:35,662 INFO L480 AbstractCegarLoop]: Abstraction has 950 states and 1108 transitions. [2018-12-01 16:04:35,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-01 16:04:35,662 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1108 transitions. [2018-12-01 16:04:35,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-12-01 16:04:35,663 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:35,663 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 12, 12, 12, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:35,663 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:35,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:35,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1619612229, now seen corresponding path program 8 times [2018-12-01 16:04:35,663 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:35,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:35,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:35,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 362 proven. 420 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-01 16:04:35,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:35,749 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:35,758 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:35,774 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:35,774 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:35,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 362 proven. 420 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-01 16:04:35,814 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:35,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-12-01 16:04:35,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-01 16:04:35,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-01 16:04:35,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-01 16:04:35,815 INFO L87 Difference]: Start difference. First operand 950 states and 1108 transitions. Second operand 15 states. [2018-12-01 16:04:35,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:35,868 INFO L93 Difference]: Finished difference Result 1837 states and 2154 transitions. [2018-12-01 16:04:35,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-01 16:04:35,868 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2018-12-01 16:04:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:35,870 INFO L225 Difference]: With dead ends: 1837 [2018-12-01 16:04:35,870 INFO L226 Difference]: Without dead ends: 960 [2018-12-01 16:04:35,872 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-12-01 16:04:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2018-12-01 16:04:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 956. [2018-12-01 16:04:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2018-12-01 16:04:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1114 transitions. [2018-12-01 16:04:35,886 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1114 transitions. Word has length 124 [2018-12-01 16:04:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:35,887 INFO L480 AbstractCegarLoop]: Abstraction has 956 states and 1114 transitions. [2018-12-01 16:04:35,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-01 16:04:35,887 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1114 transitions. [2018-12-01 16:04:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-12-01 16:04:35,888 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:35,888 INFO L402 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:35,888 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:35,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:35,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1936852933, now seen corresponding path program 20 times [2018-12-01 16:04:35,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:35,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:35,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:35,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:36,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:36,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:36,040 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:36,046 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:36,058 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:36,058 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:36,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 0 proven. 1200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:36,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:36,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-12-01 16:04:36,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-01 16:04:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-01 16:04:36,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-12-01 16:04:36,091 INFO L87 Difference]: Start difference. First operand 956 states and 1114 transitions. Second operand 23 states. [2018-12-01 16:04:36,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:36,223 INFO L93 Difference]: Finished difference Result 1874 states and 2329 transitions. [2018-12-01 16:04:36,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-01 16:04:36,223 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 128 [2018-12-01 16:04:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:36,227 INFO L225 Difference]: With dead ends: 1874 [2018-12-01 16:04:36,227 INFO L226 Difference]: Without dead ends: 1872 [2018-12-01 16:04:36,228 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-12-01 16:04:36,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2018-12-01 16:04:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1007. [2018-12-01 16:04:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2018-12-01 16:04:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1174 transitions. [2018-12-01 16:04:36,250 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1174 transitions. Word has length 128 [2018-12-01 16:04:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:36,250 INFO L480 AbstractCegarLoop]: Abstraction has 1007 states and 1174 transitions. [2018-12-01 16:04:36,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-01 16:04:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1174 transitions. [2018-12-01 16:04:36,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-12-01 16:04:36,251 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:36,252 INFO L402 BasicCegarLoop]: trace histogram [21, 20, 20, 13, 13, 13, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:36,252 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:36,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash 23856532, now seen corresponding path program 9 times [2018-12-01 16:04:36,252 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:36,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:36,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:36,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:36,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 391 proven. 494 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-12-01 16:04:36,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:36,355 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/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 [2018-12-01 16:04:36,361 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:36,375 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-01 16:04:36,375 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:36,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 436 proven. 176 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-12-01 16:04:36,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:36,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 25 [2018-12-01 16:04:36,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-01 16:04:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-01 16:04:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-12-01 16:04:36,515 INFO L87 Difference]: Start difference. First operand 1007 states and 1174 transitions. Second operand 25 states. [2018-12-01 16:04:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:36,573 INFO L93 Difference]: Finished difference Result 2049 states and 2405 transitions. [2018-12-01 16:04:36,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-01 16:04:36,573 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 130 [2018-12-01 16:04:36,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:36,575 INFO L225 Difference]: With dead ends: 2049 [2018-12-01 16:04:36,575 INFO L226 Difference]: Without dead ends: 1121 [2018-12-01 16:04:36,576 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-12-01 16:04:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2018-12-01 16:04:36,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1100. [2018-12-01 16:04:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1100 states. [2018-12-01 16:04:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1281 transitions. [2018-12-01 16:04:36,587 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1281 transitions. Word has length 130 [2018-12-01 16:04:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:36,587 INFO L480 AbstractCegarLoop]: Abstraction has 1100 states and 1281 transitions. [2018-12-01 16:04:36,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-01 16:04:36,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1281 transitions. [2018-12-01 16:04:36,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-12-01 16:04:36,587 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:36,587 INFO L402 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:36,588 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:36,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:36,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1041122412, now seen corresponding path program 21 times [2018-12-01 16:04:36,588 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:36,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:36,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:36,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:36,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:36,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:36,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:36,781 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:36,787 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:36,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-12-01 16:04:36,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:36,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1323 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:36,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:36,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-01 16:04:36,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-01 16:04:36,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-01 16:04:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-01 16:04:36,838 INFO L87 Difference]: Start difference. First operand 1100 states and 1281 transitions. Second operand 24 states. [2018-12-01 16:04:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:36,952 INFO L93 Difference]: Finished difference Result 2154 states and 2677 transitions. [2018-12-01 16:04:36,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-01 16:04:36,953 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 134 [2018-12-01 16:04:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:36,956 INFO L225 Difference]: With dead ends: 2154 [2018-12-01 16:04:36,956 INFO L226 Difference]: Without dead ends: 2152 [2018-12-01 16:04:36,956 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-12-01 16:04:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2018-12-01 16:04:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 1157. [2018-12-01 16:04:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2018-12-01 16:04:36,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1348 transitions. [2018-12-01 16:04:36,970 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1348 transitions. Word has length 134 [2018-12-01 16:04:36,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:36,970 INFO L480 AbstractCegarLoop]: Abstraction has 1157 states and 1348 transitions. [2018-12-01 16:04:36,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-01 16:04:36,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1348 transitions. [2018-12-01 16:04:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-12-01 16:04:36,971 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:36,971 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:36,971 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:36,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:36,972 INFO L82 PathProgramCache]: Analyzing trace with hash -465446867, now seen corresponding path program 22 times [2018-12-01 16:04:36,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:36,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:36,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:36,972 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:36,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:37,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:37,156 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:37,162 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:37,177 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:37,177 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:37,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:37,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:37,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-12-01 16:04:37,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-01 16:04:37,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-01 16:04:37,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-12-01 16:04:37,208 INFO L87 Difference]: Start difference. First operand 1157 states and 1348 transitions. Second operand 25 states. [2018-12-01 16:04:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:37,365 INFO L93 Difference]: Finished difference Result 2269 states and 2821 transitions. [2018-12-01 16:04:37,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-01 16:04:37,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 140 [2018-12-01 16:04:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:37,368 INFO L225 Difference]: With dead ends: 2269 [2018-12-01 16:04:37,368 INFO L226 Difference]: Without dead ends: 2267 [2018-12-01 16:04:37,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-12-01 16:04:37,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2018-12-01 16:04:37,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1214. [2018-12-01 16:04:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2018-12-01 16:04:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1415 transitions. [2018-12-01 16:04:37,384 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1415 transitions. Word has length 140 [2018-12-01 16:04:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:37,385 INFO L480 AbstractCegarLoop]: Abstraction has 1214 states and 1415 transitions. [2018-12-01 16:04:37,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-01 16:04:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1415 transitions. [2018-12-01 16:04:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-12-01 16:04:37,385 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:37,385 INFO L402 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:37,385 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:37,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash -693740026, now seen corresponding path program 23 times [2018-12-01 16:04:37,386 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:37,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:37,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:37,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:37,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:37,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:37,583 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:37,589 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:37,621 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-12-01 16:04:37,621 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:37,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1587 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:37,656 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:37,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-12-01 16:04:37,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-01 16:04:37,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-01 16:04:37,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-01 16:04:37,657 INFO L87 Difference]: Start difference. First operand 1214 states and 1415 transitions. Second operand 26 states. [2018-12-01 16:04:37,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:37,806 INFO L93 Difference]: Finished difference Result 2384 states and 2965 transitions. [2018-12-01 16:04:37,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-01 16:04:37,806 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 146 [2018-12-01 16:04:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:37,810 INFO L225 Difference]: With dead ends: 2384 [2018-12-01 16:04:37,810 INFO L226 Difference]: Without dead ends: 2382 [2018-12-01 16:04:37,811 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-01 16:04:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2018-12-01 16:04:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 1271. [2018-12-01 16:04:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2018-12-01 16:04:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1482 transitions. [2018-12-01 16:04:37,829 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1482 transitions. Word has length 146 [2018-12-01 16:04:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:37,830 INFO L480 AbstractCegarLoop]: Abstraction has 1271 states and 1482 transitions. [2018-12-01 16:04:37,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-01 16:04:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1482 transitions. [2018-12-01 16:04:37,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-12-01 16:04:37,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:37,831 INFO L402 BasicCegarLoop]: trace histogram [24, 23, 23, 15, 15, 15, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:37,831 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:37,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:37,832 INFO L82 PathProgramCache]: Analyzing trace with hash 2035440153, now seen corresponding path program 10 times [2018-12-01 16:04:37,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:37,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:37,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:37,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:37,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:37,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 511 proven. 660 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-01 16:04:37,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:37,931 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:37,937 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:37,952 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:37,952 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:37,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1363 backedges. 511 proven. 660 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-01 16:04:37,988 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:37,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-12-01 16:04:37,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-01 16:04:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-01 16:04:37,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-01 16:04:37,989 INFO L87 Difference]: Start difference. First operand 1271 states and 1482 transitions. Second operand 18 states. [2018-12-01 16:04:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:38,064 INFO L93 Difference]: Finished difference Result 2461 states and 2884 transitions. [2018-12-01 16:04:38,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-01 16:04:38,064 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 148 [2018-12-01 16:04:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:38,067 INFO L225 Difference]: With dead ends: 2461 [2018-12-01 16:04:38,067 INFO L226 Difference]: Without dead ends: 1281 [2018-12-01 16:04:38,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-12-01 16:04:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2018-12-01 16:04:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1277. [2018-12-01 16:04:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2018-12-01 16:04:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1488 transitions. [2018-12-01 16:04:38,084 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1488 transitions. Word has length 148 [2018-12-01 16:04:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:38,084 INFO L480 AbstractCegarLoop]: Abstraction has 1277 states and 1488 transitions. [2018-12-01 16:04:38,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-01 16:04:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1488 transitions. [2018-12-01 16:04:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-12-01 16:04:38,085 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:38,085 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:38,085 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:38,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash -503620321, now seen corresponding path program 24 times [2018-12-01 16:04:38,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:38,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:38,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:38,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:38,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:38,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:38,294 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:38,299 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:38,322 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-12-01 16:04:38,322 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:38,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1728 backedges. 0 proven. 1728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:38,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:38,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-12-01 16:04:38,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-12-01 16:04:38,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-12-01 16:04:38,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-12-01 16:04:38,357 INFO L87 Difference]: Start difference. First operand 1277 states and 1488 transitions. Second operand 27 states. [2018-12-01 16:04:38,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:38,488 INFO L93 Difference]: Finished difference Result 2505 states and 3115 transitions. [2018-12-01 16:04:38,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-01 16:04:38,488 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 152 [2018-12-01 16:04:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:38,491 INFO L225 Difference]: With dead ends: 2505 [2018-12-01 16:04:38,491 INFO L226 Difference]: Without dead ends: 2503 [2018-12-01 16:04:38,492 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-12-01 16:04:38,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2018-12-01 16:04:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 1334. [2018-12-01 16:04:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1334 states. [2018-12-01 16:04:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1555 transitions. [2018-12-01 16:04:38,516 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1555 transitions. Word has length 152 [2018-12-01 16:04:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:38,516 INFO L480 AbstractCegarLoop]: Abstraction has 1334 states and 1555 transitions. [2018-12-01 16:04:38,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-12-01 16:04:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1555 transitions. [2018-12-01 16:04:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-12-01 16:04:38,517 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:38,517 INFO L402 BasicCegarLoop]: trace histogram [25, 24, 24, 16, 16, 16, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:38,517 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:38,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash 56882930, now seen corresponding path program 11 times [2018-12-01 16:04:38,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:38,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:38,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:38,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:38,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-01 16:04:38,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:38,625 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:38,631 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:38,652 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-01 16:04:38,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:38,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 544 proven. 752 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-01 16:04:38,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:38,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-12-01 16:04:38,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-01 16:04:38,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-01 16:04:38,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-01 16:04:38,688 INFO L87 Difference]: Start difference. First operand 1334 states and 1555 transitions. Second operand 19 states. [2018-12-01 16:04:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:38,739 INFO L93 Difference]: Finished difference Result 2581 states and 3024 transitions. [2018-12-01 16:04:38,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-01 16:04:38,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2018-12-01 16:04:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:38,742 INFO L225 Difference]: With dead ends: 2581 [2018-12-01 16:04:38,742 INFO L226 Difference]: Without dead ends: 1344 [2018-12-01 16:04:38,744 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-12-01 16:04:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2018-12-01 16:04:38,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2018-12-01 16:04:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2018-12-01 16:04:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1561 transitions. [2018-12-01 16:04:38,769 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1561 transitions. Word has length 154 [2018-12-01 16:04:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:38,769 INFO L480 AbstractCegarLoop]: Abstraction has 1340 states and 1561 transitions. [2018-12-01 16:04:38,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-01 16:04:38,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1561 transitions. [2018-12-01 16:04:38,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-12-01 16:04:38,770 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:38,770 INFO L402 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:38,771 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:38,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:38,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1647254152, now seen corresponding path program 25 times [2018-12-01 16:04:38,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:38,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:38,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:38,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:38,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:38,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:38,992 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:38,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:39,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:39,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:39,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:39,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-12-01 16:04:39,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-12-01 16:04:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-12-01 16:04:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-12-01 16:04:39,048 INFO L87 Difference]: Start difference. First operand 1340 states and 1561 transitions. Second operand 28 states. [2018-12-01 16:04:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:39,213 INFO L93 Difference]: Finished difference Result 2626 states and 3265 transitions. [2018-12-01 16:04:39,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-01 16:04:39,213 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 158 [2018-12-01 16:04:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:39,216 INFO L225 Difference]: With dead ends: 2626 [2018-12-01 16:04:39,217 INFO L226 Difference]: Without dead ends: 2624 [2018-12-01 16:04:39,217 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-12-01 16:04:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2018-12-01 16:04:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 1397. [2018-12-01 16:04:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1397 states. [2018-12-01 16:04:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1628 transitions. [2018-12-01 16:04:39,248 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1628 transitions. Word has length 158 [2018-12-01 16:04:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:39,248 INFO L480 AbstractCegarLoop]: Abstraction has 1397 states and 1628 transitions. [2018-12-01 16:04:39,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-12-01 16:04:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1628 transitions. [2018-12-01 16:04:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-12-01 16:04:39,249 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:39,250 INFO L402 BasicCegarLoop]: trace histogram [26, 25, 25, 17, 17, 17, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:39,250 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:39,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:39,250 INFO L82 PathProgramCache]: Analyzing trace with hash 536399115, now seen corresponding path program 12 times [2018-12-01 16:04:39,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:39,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:39,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:39,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:39,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 577 proven. 850 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-12-01 16:04:39,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:39,389 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:39,397 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:39,423 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-12-01 16:04:39,423 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:39,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1619 backedges. 695 proven. 264 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-12-01 16:04:39,614 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:39,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 31 [2018-12-01 16:04:39,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-01 16:04:39,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-01 16:04:39,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-01 16:04:39,615 INFO L87 Difference]: Start difference. First operand 1397 states and 1628 transitions. Second operand 31 states. [2018-12-01 16:04:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:39,699 INFO L93 Difference]: Finished difference Result 2933 states and 3457 transitions. [2018-12-01 16:04:39,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-01 16:04:39,699 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 160 [2018-12-01 16:04:39,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:39,701 INFO L225 Difference]: With dead ends: 2933 [2018-12-01 16:04:39,701 INFO L226 Difference]: Without dead ends: 1639 [2018-12-01 16:04:39,703 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-01 16:04:39,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2018-12-01 16:04:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1613. [2018-12-01 16:04:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1613 states. [2018-12-01 16:04:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 1879 transitions. [2018-12-01 16:04:39,728 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 1879 transitions. Word has length 160 [2018-12-01 16:04:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:39,728 INFO L480 AbstractCegarLoop]: Abstraction has 1613 states and 1879 transitions. [2018-12-01 16:04:39,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-01 16:04:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 1879 transitions. [2018-12-01 16:04:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-12-01 16:04:39,729 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:39,729 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:39,730 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:39,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:39,730 INFO L82 PathProgramCache]: Analyzing trace with hash 426444561, now seen corresponding path program 26 times [2018-12-01 16:04:39,730 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:39,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:39,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:39,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:39,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:39,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:39,982 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:39,990 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:40,004 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:40,005 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:40,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 0 proven. 2028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:40,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:40,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-12-01 16:04:40,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-12-01 16:04:40,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-12-01 16:04:40,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-01 16:04:40,038 INFO L87 Difference]: Start difference. First operand 1613 states and 1879 transitions. Second operand 29 states. [2018-12-01 16:04:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:40,190 INFO L93 Difference]: Finished difference Result 3167 states and 3940 transitions. [2018-12-01 16:04:40,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-12-01 16:04:40,191 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 164 [2018-12-01 16:04:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:40,194 INFO L225 Difference]: With dead ends: 3167 [2018-12-01 16:04:40,194 INFO L226 Difference]: Without dead ends: 3165 [2018-12-01 16:04:40,195 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-01 16:04:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2018-12-01 16:04:40,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 1682. [2018-12-01 16:04:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-12-01 16:04:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1960 transitions. [2018-12-01 16:04:40,218 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1960 transitions. Word has length 164 [2018-12-01 16:04:40,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:40,219 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 1960 transitions. [2018-12-01 16:04:40,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-12-01 16:04:40,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1960 transitions. [2018-12-01 16:04:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-12-01 16:04:40,219 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:40,219 INFO L402 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:40,220 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:40,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:40,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1153552874, now seen corresponding path program 27 times [2018-12-01 16:04:40,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:40,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:40,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:40,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:40,443 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:40,450 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:40,477 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-12-01 16:04:40,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:40,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2187 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:40,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:40,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-01 16:04:40,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-01 16:04:40,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-01 16:04:40,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-01 16:04:40,511 INFO L87 Difference]: Start difference. First operand 1682 states and 1960 transitions. Second operand 30 states. [2018-12-01 16:04:40,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:40,665 INFO L93 Difference]: Finished difference Result 3306 states and 4114 transitions. [2018-12-01 16:04:40,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-01 16:04:40,666 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 170 [2018-12-01 16:04:40,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:40,669 INFO L225 Difference]: With dead ends: 3306 [2018-12-01 16:04:40,669 INFO L226 Difference]: Without dead ends: 3304 [2018-12-01 16:04:40,670 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-01 16:04:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2018-12-01 16:04:40,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 1751. [2018-12-01 16:04:40,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2018-12-01 16:04:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2041 transitions. [2018-12-01 16:04:40,695 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2041 transitions. Word has length 170 [2018-12-01 16:04:40,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:40,695 INFO L480 AbstractCegarLoop]: Abstraction has 1751 states and 2041 transitions. [2018-12-01 16:04:40,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-01 16:04:40,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2041 transitions. [2018-12-01 16:04:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-12-01 16:04:40,696 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:40,696 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:40,696 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:40,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:40,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1719577085, now seen corresponding path program 28 times [2018-12-01 16:04:40,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:40,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:40,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:40,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:40,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:40,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:40,943 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:40,949 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:40,966 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:40,966 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:40,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:41,004 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:41,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-12-01 16:04:41,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-01 16:04:41,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-01 16:04:41,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-01 16:04:41,004 INFO L87 Difference]: Start difference. First operand 1751 states and 2041 transitions. Second operand 31 states. [2018-12-01 16:04:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:41,181 INFO L93 Difference]: Finished difference Result 3445 states and 4288 transitions. [2018-12-01 16:04:41,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-01 16:04:41,182 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-12-01 16:04:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:41,184 INFO L225 Difference]: With dead ends: 3445 [2018-12-01 16:04:41,184 INFO L226 Difference]: Without dead ends: 3443 [2018-12-01 16:04:41,185 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-01 16:04:41,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3443 states. [2018-12-01 16:04:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3443 to 1820. [2018-12-01 16:04:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-12-01 16:04:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2122 transitions. [2018-12-01 16:04:41,211 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2122 transitions. Word has length 176 [2018-12-01 16:04:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:41,211 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2122 transitions. [2018-12-01 16:04:41,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-01 16:04:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2122 transitions. [2018-12-01 16:04:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-12-01 16:04:41,212 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:41,213 INFO L402 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:41,213 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:41,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:41,213 INFO L82 PathProgramCache]: Analyzing trace with hash 67740508, now seen corresponding path program 29 times [2018-12-01 16:04:41,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:41,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:41,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:41,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:41,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:41,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:41,514 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:41,520 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:41,549 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-12-01 16:04:41,549 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:41,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2523 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:41,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:41,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-01 16:04:41,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-12-01 16:04:41,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-12-01 16:04:41,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-12-01 16:04:41,584 INFO L87 Difference]: Start difference. First operand 1820 states and 2122 transitions. Second operand 32 states. [2018-12-01 16:04:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:41,750 INFO L93 Difference]: Finished difference Result 3584 states and 4462 transitions. [2018-12-01 16:04:41,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-12-01 16:04:41,751 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 182 [2018-12-01 16:04:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:41,753 INFO L225 Difference]: With dead ends: 3584 [2018-12-01 16:04:41,753 INFO L226 Difference]: Without dead ends: 3582 [2018-12-01 16:04:41,754 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-12-01 16:04:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2018-12-01 16:04:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 1889. [2018-12-01 16:04:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-12-01 16:04:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2203 transitions. [2018-12-01 16:04:41,781 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2203 transitions. Word has length 182 [2018-12-01 16:04:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:41,781 INFO L480 AbstractCegarLoop]: Abstraction has 1889 states and 2203 transitions. [2018-12-01 16:04:41,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-12-01 16:04:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2203 transitions. [2018-12-01 16:04:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-12-01 16:04:41,782 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:41,782 INFO L402 BasicCegarLoop]: trace histogram [30, 29, 29, 19, 19, 19, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:41,782 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:41,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash 912269923, now seen corresponding path program 13 times [2018-12-01 16:04:41,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:41,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:41,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:41,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:41,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 799 proven. 1064 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-01 16:04:41,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:41,929 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:41,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:41,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 799 proven. 1064 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-01 16:04:41,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:41,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-12-01 16:04:41,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-12-01 16:04:41,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-12-01 16:04:41,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-01 16:04:41,981 INFO L87 Difference]: Start difference. First operand 1889 states and 2203 transitions. Second operand 22 states. [2018-12-01 16:04:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:42,027 INFO L93 Difference]: Finished difference Result 3673 states and 4302 transitions. [2018-12-01 16:04:42,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-12-01 16:04:42,027 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 184 [2018-12-01 16:04:42,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:42,028 INFO L225 Difference]: With dead ends: 3673 [2018-12-01 16:04:42,028 INFO L226 Difference]: Without dead ends: 1899 [2018-12-01 16:04:42,029 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-12-01 16:04:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2018-12-01 16:04:42,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1895. [2018-12-01 16:04:42,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2018-12-01 16:04:42,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2209 transitions. [2018-12-01 16:04:42,046 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2209 transitions. Word has length 184 [2018-12-01 16:04:42,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:42,047 INFO L480 AbstractCegarLoop]: Abstraction has 1895 states and 2209 transitions. [2018-12-01 16:04:42,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-12-01 16:04:42,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2209 transitions. [2018-12-01 16:04:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-12-01 16:04:42,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:42,047 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:42,048 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:42,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:42,048 INFO L82 PathProgramCache]: Analyzing trace with hash 208587253, now seen corresponding path program 30 times [2018-12-01 16:04:42,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:42,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:42,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:42,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:42,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:42,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:42,308 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:42,315 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:42,343 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-12-01 16:04:42,344 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:42,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:42,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2700 backedges. 0 proven. 2700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:42,378 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:42,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-12-01 16:04:42,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-12-01 16:04:42,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-12-01 16:04:42,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-12-01 16:04:42,379 INFO L87 Difference]: Start difference. First operand 1895 states and 2209 transitions. Second operand 33 states. [2018-12-01 16:04:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:42,547 INFO L93 Difference]: Finished difference Result 3729 states and 4642 transitions. [2018-12-01 16:04:42,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-01 16:04:42,548 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 188 [2018-12-01 16:04:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:42,550 INFO L225 Difference]: With dead ends: 3729 [2018-12-01 16:04:42,550 INFO L226 Difference]: Without dead ends: 3727 [2018-12-01 16:04:42,551 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-12-01 16:04:42,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2018-12-01 16:04:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 1964. [2018-12-01 16:04:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1964 states. [2018-12-01 16:04:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2290 transitions. [2018-12-01 16:04:42,578 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2290 transitions. Word has length 188 [2018-12-01 16:04:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:42,579 INFO L480 AbstractCegarLoop]: Abstraction has 1964 states and 2290 transitions. [2018-12-01 16:04:42,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-12-01 16:04:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2290 transitions. [2018-12-01 16:04:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-12-01 16:04:42,579 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:42,579 INFO L402 BasicCegarLoop]: trace histogram [31, 30, 30, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:42,580 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:42,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1172961604, now seen corresponding path program 14 times [2018-12-01 16:04:42,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:42,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:42,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:42,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 840 proven. 1180 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-01 16:04:42,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:42,741 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:42,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:42,763 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:42,763 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:42,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 840 proven. 1180 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-01 16:04:42,795 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:42,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-01 16:04:42,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-01 16:04:42,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-01 16:04:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-12-01 16:04:42,795 INFO L87 Difference]: Start difference. First operand 1964 states and 2290 transitions. Second operand 23 states. [2018-12-01 16:04:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:42,853 INFO L93 Difference]: Finished difference Result 3817 states and 4470 transitions. [2018-12-01 16:04:42,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-01 16:04:42,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 190 [2018-12-01 16:04:42,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:42,854 INFO L225 Difference]: With dead ends: 3817 [2018-12-01 16:04:42,854 INFO L226 Difference]: Without dead ends: 1974 [2018-12-01 16:04:42,856 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-12-01 16:04:42,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2018-12-01 16:04:42,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1970. [2018-12-01 16:04:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1970 states. [2018-12-01 16:04:42,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 2296 transitions. [2018-12-01 16:04:42,873 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 2296 transitions. Word has length 190 [2018-12-01 16:04:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:42,874 INFO L480 AbstractCegarLoop]: Abstraction has 1970 states and 2296 transitions. [2018-12-01 16:04:42,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-01 16:04:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 2296 transitions. [2018-12-01 16:04:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-12-01 16:04:42,874 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:42,874 INFO L402 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:42,875 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:42,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:42,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1064884686, now seen corresponding path program 31 times [2018-12-01 16:04:42,875 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:42,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:42,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:42,875 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:42,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:43,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:43,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:43,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:43,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2883 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:43,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:43,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-12-01 16:04:43,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-01 16:04:43,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-01 16:04:43,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-12-01 16:04:43,244 INFO L87 Difference]: Start difference. First operand 1970 states and 2296 transitions. Second operand 34 states. [2018-12-01 16:04:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:43,435 INFO L93 Difference]: Finished difference Result 3874 states and 4822 transitions. [2018-12-01 16:04:43,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-01 16:04:43,435 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 194 [2018-12-01 16:04:43,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:43,438 INFO L225 Difference]: With dead ends: 3874 [2018-12-01 16:04:43,438 INFO L226 Difference]: Without dead ends: 3872 [2018-12-01 16:04:43,439 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-12-01 16:04:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2018-12-01 16:04:43,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 2039. [2018-12-01 16:04:43,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2018-12-01 16:04:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 2377 transitions. [2018-12-01 16:04:43,468 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 2377 transitions. Word has length 194 [2018-12-01 16:04:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:43,468 INFO L480 AbstractCegarLoop]: Abstraction has 2039 states and 2377 transitions. [2018-12-01 16:04:43,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-01 16:04:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 2377 transitions. [2018-12-01 16:04:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-12-01 16:04:43,469 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:43,469 INFO L402 BasicCegarLoop]: trace histogram [32, 31, 31, 21, 21, 21, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:43,469 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:43,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1390117973, now seen corresponding path program 15 times [2018-12-01 16:04:43,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:43,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:43,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:43,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:43,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 881 proven. 1302 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-12-01 16:04:43,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:43,681 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:43,687 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:43,702 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-12-01 16:04:43,703 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:43,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2483 backedges. 962 proven. 341 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2018-12-01 16:04:43,896 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:43,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 36 [2018-12-01 16:04:43,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-01 16:04:43,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-01 16:04:43,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 16:04:43,897 INFO L87 Difference]: Start difference. First operand 2039 states and 2377 transitions. Second operand 36 states. [2018-12-01 16:04:43,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:43,997 INFO L93 Difference]: Finished difference Result 4124 states and 4835 transitions. [2018-12-01 16:04:43,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-01 16:04:43,998 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 196 [2018-12-01 16:04:43,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:43,999 INFO L225 Difference]: With dead ends: 4124 [2018-12-01 16:04:44,000 INFO L226 Difference]: Without dead ends: 2212 [2018-12-01 16:04:44,001 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 16:04:44,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2018-12-01 16:04:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2180. [2018-12-01 16:04:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2018-12-01 16:04:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 2540 transitions. [2018-12-01 16:04:44,025 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 2540 transitions. Word has length 196 [2018-12-01 16:04:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:44,025 INFO L480 AbstractCegarLoop]: Abstraction has 2180 states and 2540 transitions. [2018-12-01 16:04:44,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-01 16:04:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 2540 transitions. [2018-12-01 16:04:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-12-01 16:04:44,026 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:44,026 INFO L402 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:44,026 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:44,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:44,026 INFO L82 PathProgramCache]: Analyzing trace with hash -677125401, now seen corresponding path program 32 times [2018-12-01 16:04:44,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:44,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:44,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:44,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:44,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:44,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:44,332 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:44,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:44,357 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:44,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:44,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:44,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 0 proven. 3072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:44,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:44,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-12-01 16:04:44,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-01 16:04:44,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-01 16:04:44,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-12-01 16:04:44,396 INFO L87 Difference]: Start difference. First operand 2180 states and 2540 transitions. Second operand 35 states. [2018-12-01 16:04:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:44,605 INFO L93 Difference]: Finished difference Result 4286 states and 5335 transitions. [2018-12-01 16:04:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-01 16:04:44,605 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 200 [2018-12-01 16:04:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:44,607 INFO L225 Difference]: With dead ends: 4286 [2018-12-01 16:04:44,607 INFO L226 Difference]: Without dead ends: 4284 [2018-12-01 16:04:44,608 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-12-01 16:04:44,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2018-12-01 16:04:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 2255. [2018-12-01 16:04:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2255 states. [2018-12-01 16:04:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2628 transitions. [2018-12-01 16:04:44,639 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2628 transitions. Word has length 200 [2018-12-01 16:04:44,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:44,640 INFO L480 AbstractCegarLoop]: Abstraction has 2255 states and 2628 transitions. [2018-12-01 16:04:44,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-01 16:04:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2628 transitions. [2018-12-01 16:04:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-12-01 16:04:44,640 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:44,640 INFO L402 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:44,641 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:44,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:44,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1507855040, now seen corresponding path program 33 times [2018-12-01 16:04:44,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:44,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:44,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:44,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:44,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:44,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:44,952 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:44,964 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:45,011 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-12-01 16:04:45,011 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:45,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3267 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:45,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:45,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-01 16:04:45,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-01 16:04:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-01 16:04:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 16:04:45,061 INFO L87 Difference]: Start difference. First operand 2255 states and 2628 transitions. Second operand 36 states. [2018-12-01 16:04:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:45,281 INFO L93 Difference]: Finished difference Result 4437 states and 5524 transitions. [2018-12-01 16:04:45,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-01 16:04:45,281 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 206 [2018-12-01 16:04:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:45,284 INFO L225 Difference]: With dead ends: 4437 [2018-12-01 16:04:45,284 INFO L226 Difference]: Without dead ends: 4435 [2018-12-01 16:04:45,285 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 16:04:45,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4435 states. [2018-12-01 16:04:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4435 to 2330. [2018-12-01 16:04:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2018-12-01 16:04:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 2716 transitions. [2018-12-01 16:04:45,316 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 2716 transitions. Word has length 206 [2018-12-01 16:04:45,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:45,316 INFO L480 AbstractCegarLoop]: Abstraction has 2330 states and 2716 transitions. [2018-12-01 16:04:45,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-01 16:04:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 2716 transitions. [2018-12-01 16:04:45,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-12-01 16:04:45,317 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:45,317 INFO L402 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:45,317 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:45,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:45,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1003561177, now seen corresponding path program 34 times [2018-12-01 16:04:45,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:45,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:45,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:45,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:45,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:45,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:45,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:45,650 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:45,657 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:45,675 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:45,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:45,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:45,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3468 backedges. 0 proven. 3468 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:45,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:45,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-12-01 16:04:45,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-12-01 16:04:45,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-12-01 16:04:45,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-01 16:04:45,726 INFO L87 Difference]: Start difference. First operand 2330 states and 2716 transitions. Second operand 37 states. [2018-12-01 16:04:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:45,949 INFO L93 Difference]: Finished difference Result 4588 states and 5713 transitions. [2018-12-01 16:04:45,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-12-01 16:04:45,949 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 212 [2018-12-01 16:04:45,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:45,951 INFO L225 Difference]: With dead ends: 4588 [2018-12-01 16:04:45,952 INFO L226 Difference]: Without dead ends: 4586 [2018-12-01 16:04:45,952 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-01 16:04:45,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2018-12-01 16:04:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 2405. [2018-12-01 16:04:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2405 states. [2018-12-01 16:04:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 2804 transitions. [2018-12-01 16:04:45,985 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 2804 transitions. Word has length 212 [2018-12-01 16:04:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:45,985 INFO L480 AbstractCegarLoop]: Abstraction has 2405 states and 2804 transitions. [2018-12-01 16:04:45,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-12-01 16:04:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 2804 transitions. [2018-12-01 16:04:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-12-01 16:04:45,986 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:45,986 INFO L402 BasicCegarLoop]: trace histogram [35, 34, 34, 23, 23, 23, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:45,986 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:45,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:45,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1107148698, now seen corresponding path program 16 times [2018-12-01 16:04:45,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:45,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:45,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:45,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:45,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 1057 proven. 1564 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-12-01 16:04:46,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:46,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:46,173 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:46,196 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:46,197 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:46,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2984 backedges. 1057 proven. 1564 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-12-01 16:04:46,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:46,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-12-01 16:04:46,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-01 16:04:46,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-01 16:04:46,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-01 16:04:46,259 INFO L87 Difference]: Start difference. First operand 2405 states and 2804 transitions. Second operand 26 states. [2018-12-01 16:04:46,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:46,318 INFO L93 Difference]: Finished difference Result 4681 states and 5480 transitions. [2018-12-01 16:04:46,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-12-01 16:04:46,319 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 214 [2018-12-01 16:04:46,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:46,320 INFO L225 Difference]: With dead ends: 4681 [2018-12-01 16:04:46,320 INFO L226 Difference]: Without dead ends: 2415 [2018-12-01 16:04:46,322 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-12-01 16:04:46,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2018-12-01 16:04:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2411. [2018-12-01 16:04:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2018-12-01 16:04:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 2810 transitions. [2018-12-01 16:04:46,345 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 2810 transitions. Word has length 214 [2018-12-01 16:04:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:46,345 INFO L480 AbstractCegarLoop]: Abstraction has 2411 states and 2810 transitions. [2018-12-01 16:04:46,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-01 16:04:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 2810 transitions. [2018-12-01 16:04:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-12-01 16:04:46,346 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:46,346 INFO L402 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:46,346 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:46,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:46,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1380939186, now seen corresponding path program 35 times [2018-12-01 16:04:46,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:46,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:46,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:46,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:46,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:46,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:46,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:46,708 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:46,714 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:46,750 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-12-01 16:04:46,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:46,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:46,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:46,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-01 16:04:46,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-01 16:04:46,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-01 16:04:46,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-01 16:04:46,791 INFO L87 Difference]: Start difference. First operand 2411 states and 2810 transitions. Second operand 38 states. [2018-12-01 16:04:47,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:47,015 INFO L93 Difference]: Finished difference Result 4745 states and 5908 transitions. [2018-12-01 16:04:47,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-01 16:04:47,015 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 218 [2018-12-01 16:04:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:47,018 INFO L225 Difference]: With dead ends: 4745 [2018-12-01 16:04:47,019 INFO L226 Difference]: Without dead ends: 4743 [2018-12-01 16:04:47,020 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-01 16:04:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4743 states. [2018-12-01 16:04:47,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 2486. [2018-12-01 16:04:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2018-12-01 16:04:47,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 2898 transitions. [2018-12-01 16:04:47,055 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 2898 transitions. Word has length 218 [2018-12-01 16:04:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:47,055 INFO L480 AbstractCegarLoop]: Abstraction has 2486 states and 2898 transitions. [2018-12-01 16:04:47,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-01 16:04:47,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 2898 transitions. [2018-12-01 16:04:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-12-01 16:04:47,057 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:47,057 INFO L402 BasicCegarLoop]: trace histogram [36, 35, 35, 24, 24, 24, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:47,057 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:47,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1304804813, now seen corresponding path program 17 times [2018-12-01 16:04:47,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:47,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:47,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:47,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:47,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1450 proven. 1299 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2018-12-01 16:04:47,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:47,254 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:47,260 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:47,290 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-12-01 16:04:47,290 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:47,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3169 backedges. 1102 proven. 1704 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-12-01 16:04:47,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:47,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 51 [2018-12-01 16:04:47,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-12-01 16:04:47,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-12-01 16:04:47,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-01 16:04:47,494 INFO L87 Difference]: Start difference. First operand 2486 states and 2898 transitions. Second operand 51 states. [2018-12-01 16:04:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:47,657 INFO L93 Difference]: Finished difference Result 6243 states and 7514 transitions. [2018-12-01 16:04:47,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-12-01 16:04:47,657 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 220 [2018-12-01 16:04:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:47,659 INFO L225 Difference]: With dead ends: 6243 [2018-12-01 16:04:47,659 INFO L226 Difference]: Without dead ends: 3902 [2018-12-01 16:04:47,661 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-01 16:04:47,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2018-12-01 16:04:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3866. [2018-12-01 16:04:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3866 states. [2018-12-01 16:04:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 4512 transitions. [2018-12-01 16:04:47,697 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 4512 transitions. Word has length 220 [2018-12-01 16:04:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:47,697 INFO L480 AbstractCegarLoop]: Abstraction has 3866 states and 4512 transitions. [2018-12-01 16:04:47,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-12-01 16:04:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 4512 transitions. [2018-12-01 16:04:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-12-01 16:04:47,698 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:47,698 INFO L402 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:47,698 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:47,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:47,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1961296843, now seen corresponding path program 36 times [2018-12-01 16:04:47,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:47,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:47,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:47,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:47,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:48,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:48,072 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:48,079 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:48,115 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-12-01 16:04:48,115 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:48,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3888 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:48,157 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:48,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-12-01 16:04:48,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-12-01 16:04:48,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-12-01 16:04:48,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-12-01 16:04:48,157 INFO L87 Difference]: Start difference. First operand 3866 states and 4512 transitions. Second operand 39 states. [2018-12-01 16:04:48,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:48,363 INFO L93 Difference]: Finished difference Result 7680 states and 9583 transitions. [2018-12-01 16:04:48,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-01 16:04:48,363 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 224 [2018-12-01 16:04:48,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:48,367 INFO L225 Difference]: With dead ends: 7680 [2018-12-01 16:04:48,367 INFO L226 Difference]: Without dead ends: 7678 [2018-12-01 16:04:48,369 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-12-01 16:04:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2018-12-01 16:04:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 4013. [2018-12-01 16:04:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4013 states. [2018-12-01 16:04:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 4684 transitions. [2018-12-01 16:04:48,433 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 4684 transitions. Word has length 224 [2018-12-01 16:04:48,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:48,433 INFO L480 AbstractCegarLoop]: Abstraction has 4013 states and 4684 transitions. [2018-12-01 16:04:48,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-12-01 16:04:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 4684 transitions. [2018-12-01 16:04:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-12-01 16:04:48,434 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:48,434 INFO L402 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:48,434 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:48,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -375923932, now seen corresponding path program 37 times [2018-12-01 16:04:48,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:48,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:48,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:48,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:48,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:48,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:48,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:48,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:48,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4107 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:48,942 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:48,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-12-01 16:04:48,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-12-01 16:04:48,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-12-01 16:04:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-12-01 16:04:48,942 INFO L87 Difference]: Start difference. First operand 4013 states and 4684 transitions. Second operand 40 states. [2018-12-01 16:04:49,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:49,152 INFO L93 Difference]: Finished difference Result 7975 states and 9952 transitions. [2018-12-01 16:04:49,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-12-01 16:04:49,152 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 230 [2018-12-01 16:04:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:49,156 INFO L225 Difference]: With dead ends: 7975 [2018-12-01 16:04:49,156 INFO L226 Difference]: Without dead ends: 7973 [2018-12-01 16:04:49,158 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-12-01 16:04:49,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7973 states. [2018-12-01 16:04:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7973 to 4160. [2018-12-01 16:04:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4160 states. [2018-12-01 16:04:49,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4160 states to 4160 states and 4856 transitions. [2018-12-01 16:04:49,236 INFO L78 Accepts]: Start accepts. Automaton has 4160 states and 4856 transitions. Word has length 230 [2018-12-01 16:04:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:49,236 INFO L480 AbstractCegarLoop]: Abstraction has 4160 states and 4856 transitions. [2018-12-01 16:04:49,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-12-01 16:04:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4160 states and 4856 transitions. [2018-12-01 16:04:49,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-12-01 16:04:49,237 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:49,237 INFO L402 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:49,237 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:49,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:49,237 INFO L82 PathProgramCache]: Analyzing trace with hash -636089411, now seen corresponding path program 38 times [2018-12-01 16:04:49,237 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:49,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:49,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:49,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:49,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:49,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:49,649 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:49,655 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:49,677 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:49,677 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:49,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 4332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:49,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:49,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-12-01 16:04:49,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-12-01 16:04:49,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-12-01 16:04:49,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-01 16:04:49,722 INFO L87 Difference]: Start difference. First operand 4160 states and 4856 transitions. Second operand 41 states. [2018-12-01 16:04:49,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:49,942 INFO L93 Difference]: Finished difference Result 8270 states and 10321 transitions. [2018-12-01 16:04:49,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-12-01 16:04:49,943 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 236 [2018-12-01 16:04:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:49,947 INFO L225 Difference]: With dead ends: 8270 [2018-12-01 16:04:49,947 INFO L226 Difference]: Without dead ends: 8268 [2018-12-01 16:04:49,949 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-01 16:04:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2018-12-01 16:04:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 4307. [2018-12-01 16:04:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-12-01 16:04:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5028 transitions. [2018-12-01 16:04:50,022 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5028 transitions. Word has length 236 [2018-12-01 16:04:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:50,022 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5028 transitions. [2018-12-01 16:04:50,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-12-01 16:04:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5028 transitions. [2018-12-01 16:04:50,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-12-01 16:04:50,023 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:50,024 INFO L402 BasicCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:50,024 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:50,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:50,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1127635562, now seen corresponding path program 39 times [2018-12-01 16:04:50,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:50,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:50,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:50,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:50,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:50,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:50,459 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:50,465 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:50,508 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-12-01 16:04:50,508 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:50,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4563 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:50,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:50,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-01 16:04:50,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-01 16:04:50,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-01 16:04:50,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-12-01 16:04:50,554 INFO L87 Difference]: Start difference. First operand 4307 states and 5028 transitions. Second operand 42 states. [2018-12-01 16:04:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:50,800 INFO L93 Difference]: Finished difference Result 8565 states and 10690 transitions. [2018-12-01 16:04:50,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-01 16:04:50,800 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 242 [2018-12-01 16:04:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:50,805 INFO L225 Difference]: With dead ends: 8565 [2018-12-01 16:04:50,805 INFO L226 Difference]: Without dead ends: 8563 [2018-12-01 16:04:50,806 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-12-01 16:04:50,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8563 states. [2018-12-01 16:04:50,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8563 to 4454. [2018-12-01 16:04:50,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4454 states. [2018-12-01 16:04:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5200 transitions. [2018-12-01 16:04:50,877 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5200 transitions. Word has length 242 [2018-12-01 16:04:50,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:50,877 INFO L480 AbstractCegarLoop]: Abstraction has 4454 states and 5200 transitions. [2018-12-01 16:04:50,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-01 16:04:50,877 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5200 transitions. [2018-12-01 16:04:50,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-12-01 16:04:50,878 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:50,878 INFO L402 BasicCegarLoop]: trace histogram [41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:50,878 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:50,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash -36783953, now seen corresponding path program 40 times [2018-12-01 16:04:50,878 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:50,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:50,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:50,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:50,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:51,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:51,328 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:51,335 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:51,357 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:51,357 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:51,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 0 proven. 4800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:51,403 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:51,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-12-01 16:04:51,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-12-01 16:04:51,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-12-01 16:04:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-12-01 16:04:51,404 INFO L87 Difference]: Start difference. First operand 4454 states and 5200 transitions. Second operand 43 states. [2018-12-01 16:04:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:51,687 INFO L93 Difference]: Finished difference Result 8860 states and 11059 transitions. [2018-12-01 16:04:51,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-12-01 16:04:51,687 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 248 [2018-12-01 16:04:51,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:51,692 INFO L225 Difference]: With dead ends: 8860 [2018-12-01 16:04:51,692 INFO L226 Difference]: Without dead ends: 8858 [2018-12-01 16:04:51,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-12-01 16:04:51,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2018-12-01 16:04:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 4601. [2018-12-01 16:04:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2018-12-01 16:04:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 5372 transitions. [2018-12-01 16:04:51,784 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 5372 transitions. Word has length 248 [2018-12-01 16:04:51,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:51,784 INFO L480 AbstractCegarLoop]: Abstraction has 4601 states and 5372 transitions. [2018-12-01 16:04:51,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-12-01 16:04:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 5372 transitions. [2018-12-01 16:04:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-12-01 16:04:51,785 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:51,785 INFO L402 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:51,786 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:51,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash -403352312, now seen corresponding path program 41 times [2018-12-01 16:04:51,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:51,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:51,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:51,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:51,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:52,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:52,247 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:52,253 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:52,297 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-12-01 16:04:52,297 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:52,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5043 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:52,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:52,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-01 16:04:52,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-01 16:04:52,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-01 16:04:52,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 16:04:52,346 INFO L87 Difference]: Start difference. First operand 4601 states and 5372 transitions. Second operand 44 states. [2018-12-01 16:04:52,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:52,657 INFO L93 Difference]: Finished difference Result 9155 states and 11428 transitions. [2018-12-01 16:04:52,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-01 16:04:52,657 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 254 [2018-12-01 16:04:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:52,662 INFO L225 Difference]: With dead ends: 9155 [2018-12-01 16:04:52,662 INFO L226 Difference]: Without dead ends: 9153 [2018-12-01 16:04:52,663 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 16:04:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2018-12-01 16:04:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 4748. [2018-12-01 16:04:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4748 states. [2018-12-01 16:04:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4748 states to 4748 states and 5544 transitions. [2018-12-01 16:04:52,742 INFO L78 Accepts]: Start accepts. Automaton has 4748 states and 5544 transitions. Word has length 254 [2018-12-01 16:04:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:52,742 INFO L480 AbstractCegarLoop]: Abstraction has 4748 states and 5544 transitions. [2018-12-01 16:04:52,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-01 16:04:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4748 states and 5544 transitions. [2018-12-01 16:04:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-12-01 16:04:52,744 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:52,744 INFO L402 BasicCegarLoop]: trace histogram [43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:52,744 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:52,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:52,744 INFO L82 PathProgramCache]: Analyzing trace with hash -842954079, now seen corresponding path program 42 times [2018-12-01 16:04:52,744 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:52,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:52,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:52,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:52,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:53,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:53,240 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:53,246 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:53,292 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-12-01 16:04:53,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:53,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:53,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5292 backedges. 0 proven. 5292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:53,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:53,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-12-01 16:04:53,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-12-01 16:04:53,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-12-01 16:04:53,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-12-01 16:04:53,345 INFO L87 Difference]: Start difference. First operand 4748 states and 5544 transitions. Second operand 45 states. [2018-12-01 16:04:53,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:53,615 INFO L93 Difference]: Finished difference Result 9450 states and 11797 transitions. [2018-12-01 16:04:53,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-12-01 16:04:53,615 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 260 [2018-12-01 16:04:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:53,620 INFO L225 Difference]: With dead ends: 9450 [2018-12-01 16:04:53,620 INFO L226 Difference]: Without dead ends: 9448 [2018-12-01 16:04:53,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-12-01 16:04:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9448 states. [2018-12-01 16:04:53,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9448 to 4895. [2018-12-01 16:04:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4895 states. [2018-12-01 16:04:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4895 states to 4895 states and 5716 transitions. [2018-12-01 16:04:53,706 INFO L78 Accepts]: Start accepts. Automaton has 4895 states and 5716 transitions. Word has length 260 [2018-12-01 16:04:53,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:53,706 INFO L480 AbstractCegarLoop]: Abstraction has 4895 states and 5716 transitions. [2018-12-01 16:04:53,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-12-01 16:04:53,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4895 states and 5716 transitions. [2018-12-01 16:04:53,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-12-01 16:04:53,708 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:53,708 INFO L402 BasicCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:53,708 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:53,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1919641978, now seen corresponding path program 43 times [2018-12-01 16:04:53,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:53,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:53,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:53,709 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:53,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:54,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:54,253 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:54,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:54,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5547 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:54,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:54,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-01 16:04:54,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-12-01 16:04:54,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-12-01 16:04:54,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-12-01 16:04:54,336 INFO L87 Difference]: Start difference. First operand 4895 states and 5716 transitions. Second operand 46 states. [2018-12-01 16:04:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:54,628 INFO L93 Difference]: Finished difference Result 9745 states and 12166 transitions. [2018-12-01 16:04:54,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-12-01 16:04:54,628 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 266 [2018-12-01 16:04:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:54,634 INFO L225 Difference]: With dead ends: 9745 [2018-12-01 16:04:54,634 INFO L226 Difference]: Without dead ends: 9743 [2018-12-01 16:04:54,636 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-12-01 16:04:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9743 states. [2018-12-01 16:04:54,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9743 to 5042. [2018-12-01 16:04:54,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5042 states. [2018-12-01 16:04:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 5888 transitions. [2018-12-01 16:04:54,739 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 5888 transitions. Word has length 266 [2018-12-01 16:04:54,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:54,739 INFO L480 AbstractCegarLoop]: Abstraction has 5042 states and 5888 transitions. [2018-12-01 16:04:54,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-12-01 16:04:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 5888 transitions. [2018-12-01 16:04:54,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-12-01 16:04:54,742 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:54,742 INFO L402 BasicCegarLoop]: trace histogram [45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:54,742 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:54,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:54,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1294007917, now seen corresponding path program 44 times [2018-12-01 16:04:54,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:54,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:54,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:54,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:04:54,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:55,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:55,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:55,264 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:55,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:04:55,292 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:04:55,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:55,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5808 backedges. 0 proven. 5808 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:55,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:55,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-12-01 16:04:55,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-12-01 16:04:55,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-12-01 16:04:55,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-12-01 16:04:55,344 INFO L87 Difference]: Start difference. First operand 5042 states and 5888 transitions. Second operand 47 states. [2018-12-01 16:04:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:55,598 INFO L93 Difference]: Finished difference Result 10040 states and 12535 transitions. [2018-12-01 16:04:55,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-12-01 16:04:55,598 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 272 [2018-12-01 16:04:55,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:55,603 INFO L225 Difference]: With dead ends: 10040 [2018-12-01 16:04:55,603 INFO L226 Difference]: Without dead ends: 10038 [2018-12-01 16:04:55,605 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-12-01 16:04:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10038 states. [2018-12-01 16:04:55,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10038 to 5189. [2018-12-01 16:04:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2018-12-01 16:04:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 6060 transitions. [2018-12-01 16:04:55,695 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 6060 transitions. Word has length 272 [2018-12-01 16:04:55,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:55,695 INFO L480 AbstractCegarLoop]: Abstraction has 5189 states and 6060 transitions. [2018-12-01 16:04:55,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-12-01 16:04:55,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 6060 transitions. [2018-12-01 16:04:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-12-01 16:04:55,697 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:55,697 INFO L402 BasicCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:55,697 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:55,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1857839852, now seen corresponding path program 45 times [2018-12-01 16:04:55,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:55,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:55,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:55,698 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:55,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:56,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:56,247 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:56,254 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:04:56,301 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-12-01 16:04:56,302 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:56,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6075 backedges. 0 proven. 6075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:56,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:56,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-12-01 16:04:56,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-01 16:04:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-01 16:04:56,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-12-01 16:04:56,356 INFO L87 Difference]: Start difference. First operand 5189 states and 6060 transitions. Second operand 48 states. [2018-12-01 16:04:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:56,592 INFO L93 Difference]: Finished difference Result 10335 states and 12904 transitions. [2018-12-01 16:04:56,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-01 16:04:56,593 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 278 [2018-12-01 16:04:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:56,598 INFO L225 Difference]: With dead ends: 10335 [2018-12-01 16:04:56,598 INFO L226 Difference]: Without dead ends: 10333 [2018-12-01 16:04:56,600 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-12-01 16:04:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2018-12-01 16:04:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 5336. [2018-12-01 16:04:56,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5336 states. [2018-12-01 16:04:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5336 states to 5336 states and 6232 transitions. [2018-12-01 16:04:56,693 INFO L78 Accepts]: Start accepts. Automaton has 5336 states and 6232 transitions. Word has length 278 [2018-12-01 16:04:56,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:56,693 INFO L480 AbstractCegarLoop]: Abstraction has 5336 states and 6232 transitions. [2018-12-01 16:04:56,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-01 16:04:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5336 states and 6232 transitions. [2018-12-01 16:04:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-12-01 16:04:56,695 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:56,695 INFO L402 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:56,695 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:56,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1319658107, now seen corresponding path program 46 times [2018-12-01 16:04:56,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:56,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:56,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:56,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:56,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:57,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:57,247 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:57,253 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:04:57,279 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:04:57,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:57,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:57,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:57,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:57,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-12-01 16:04:57,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-12-01 16:04:57,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-12-01 16:04:57,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-12-01 16:04:57,335 INFO L87 Difference]: Start difference. First operand 5336 states and 6232 transitions. Second operand 49 states. [2018-12-01 16:04:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:57,622 INFO L93 Difference]: Finished difference Result 10630 states and 13273 transitions. [2018-12-01 16:04:57,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-12-01 16:04:57,623 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 284 [2018-12-01 16:04:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:57,629 INFO L225 Difference]: With dead ends: 10630 [2018-12-01 16:04:57,629 INFO L226 Difference]: Without dead ends: 10628 [2018-12-01 16:04:57,631 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-12-01 16:04:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10628 states. [2018-12-01 16:04:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10628 to 5483. [2018-12-01 16:04:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5483 states. [2018-12-01 16:04:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6404 transitions. [2018-12-01 16:04:57,736 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6404 transitions. Word has length 284 [2018-12-01 16:04:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:57,736 INFO L480 AbstractCegarLoop]: Abstraction has 5483 states and 6404 transitions. [2018-12-01 16:04:57,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-12-01 16:04:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6404 transitions. [2018-12-01 16:04:57,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-12-01 16:04:57,738 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:57,738 INFO L402 BasicCegarLoop]: trace histogram [48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:57,738 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:57,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash 448315742, now seen corresponding path program 47 times [2018-12-01 16:04:57,738 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:57,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:57,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:57,739 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:57,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:58,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:58,345 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:58,351 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:04:58,432 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-12-01 16:04:58,433 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:58,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:58,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6627 backedges. 0 proven. 6627 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:58,489 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:58,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-01 16:04:58,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-01 16:04:58,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-01 16:04:58,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-12-01 16:04:58,490 INFO L87 Difference]: Start difference. First operand 5483 states and 6404 transitions. Second operand 50 states. [2018-12-01 16:04:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:58,788 INFO L93 Difference]: Finished difference Result 10925 states and 13642 transitions. [2018-12-01 16:04:58,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-01 16:04:58,788 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 290 [2018-12-01 16:04:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:58,794 INFO L225 Difference]: With dead ends: 10925 [2018-12-01 16:04:58,794 INFO L226 Difference]: Without dead ends: 10923 [2018-12-01 16:04:58,796 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-12-01 16:04:58,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2018-12-01 16:04:58,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 5630. [2018-12-01 16:04:58,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5630 states. [2018-12-01 16:04:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 6576 transitions. [2018-12-01 16:04:58,895 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 6576 transitions. Word has length 290 [2018-12-01 16:04:58,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:04:58,895 INFO L480 AbstractCegarLoop]: Abstraction has 5630 states and 6576 transitions. [2018-12-01 16:04:58,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-01 16:04:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 6576 transitions. [2018-12-01 16:04:58,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-12-01 16:04:58,897 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:04:58,897 INFO L402 BasicCegarLoop]: trace histogram [49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-12-01 16:04:58,897 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:04:58,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:04:58,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2003050889, now seen corresponding path program 48 times [2018-12-01 16:04:58,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:04:58,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:04:58,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:58,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:04:58,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:04:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:04:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:59,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:04:59,527 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:04:59,534 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:04:59,586 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-12-01 16:04:59,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:04:59,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:04:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6912 backedges. 0 proven. 6912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:04:59,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:04:59,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-12-01 16:04:59,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-12-01 16:04:59,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-12-01 16:04:59,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-01 16:04:59,645 INFO L87 Difference]: Start difference. First operand 5630 states and 6576 transitions. Second operand 51 states. [2018-12-01 16:04:59,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:04:59,903 INFO L93 Difference]: Finished difference Result 11220 states and 14011 transitions. [2018-12-01 16:04:59,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-12-01 16:04:59,903 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 296 [2018-12-01 16:04:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:04:59,909 INFO L225 Difference]: With dead ends: 11220 [2018-12-01 16:04:59,909 INFO L226 Difference]: Without dead ends: 11218 [2018-12-01 16:04:59,911 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-01 16:04:59,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11218 states. [2018-12-01 16:05:00,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11218 to 5777. [2018-12-01 16:05:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5777 states. [2018-12-01 16:05:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5777 states to 5777 states and 6748 transitions. [2018-12-01 16:05:00,012 INFO L78 Accepts]: Start accepts. Automaton has 5777 states and 6748 transitions. Word has length 296 [2018-12-01 16:05:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:00,012 INFO L480 AbstractCegarLoop]: Abstraction has 5777 states and 6748 transitions. [2018-12-01 16:05:00,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-12-01 16:05:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5777 states and 6748 transitions. [2018-12-01 16:05:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-12-01 16:05:00,014 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:00,014 INFO L402 BasicCegarLoop]: trace histogram [50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:00,014 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:00,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -9370416, now seen corresponding path program 49 times [2018-12-01 16:05:00,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:00,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:00,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:00,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:00,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:00,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:00,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:00,656 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:00,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:00,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7203 backedges. 0 proven. 7203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:00,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:00,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-01 16:05:00,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-01 16:05:00,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-01 16:05:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-12-01 16:05:00,766 INFO L87 Difference]: Start difference. First operand 5777 states and 6748 transitions. Second operand 52 states. [2018-12-01 16:05:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:01,078 INFO L93 Difference]: Finished difference Result 11515 states and 14380 transitions. [2018-12-01 16:05:01,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-01 16:05:01,079 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 302 [2018-12-01 16:05:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:01,085 INFO L225 Difference]: With dead ends: 11515 [2018-12-01 16:05:01,085 INFO L226 Difference]: Without dead ends: 11513 [2018-12-01 16:05:01,086 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-12-01 16:05:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11513 states. [2018-12-01 16:05:01,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11513 to 5924. [2018-12-01 16:05:01,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5924 states. [2018-12-01 16:05:01,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5924 states to 5924 states and 6920 transitions. [2018-12-01 16:05:01,191 INFO L78 Accepts]: Start accepts. Automaton has 5924 states and 6920 transitions. Word has length 302 [2018-12-01 16:05:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:01,191 INFO L480 AbstractCegarLoop]: Abstraction has 5924 states and 6920 transitions. [2018-12-01 16:05:01,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-01 16:05:01,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5924 states and 6920 transitions. [2018-12-01 16:05:01,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-12-01 16:05:01,193 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:01,193 INFO L402 BasicCegarLoop]: trace histogram [50, 49, 49, 26, 26, 26, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:01,193 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:01,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:01,194 INFO L82 PathProgramCache]: Analyzing trace with hash -933628791, now seen corresponding path program 18 times [2018-12-01 16:05:01,194 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:01,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:01,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:01,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:01,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 2464 proven. 2002 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:01,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:01,431 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:01,437 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:05:01,477 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-12-01 16:05:01,477 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:01,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6053 backedges. 2464 proven. 2002 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:01,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:01,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-12-01 16:05:01,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-12-01 16:05:01,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-12-01 16:05:01,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-01 16:05:01,528 INFO L87 Difference]: Start difference. First operand 5924 states and 6920 transitions. Second operand 29 states. [2018-12-01 16:05:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:01,607 INFO L93 Difference]: Finished difference Result 11701 states and 13694 transitions. [2018-12-01 16:05:01,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-12-01 16:05:01,608 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 304 [2018-12-01 16:05:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:01,611 INFO L225 Difference]: With dead ends: 11701 [2018-12-01 16:05:01,611 INFO L226 Difference]: Without dead ends: 5934 [2018-12-01 16:05:01,615 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-12-01 16:05:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2018-12-01 16:05:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5930. [2018-12-01 16:05:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2018-12-01 16:05:01,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 6926 transitions. [2018-12-01 16:05:01,678 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 6926 transitions. Word has length 304 [2018-12-01 16:05:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:01,678 INFO L480 AbstractCegarLoop]: Abstraction has 5930 states and 6926 transitions. [2018-12-01 16:05:01,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-12-01 16:05:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 6926 transitions. [2018-12-01 16:05:01,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-12-01 16:05:01,681 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:01,681 INFO L402 BasicCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:01,681 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:01,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:01,681 INFO L82 PathProgramCache]: Analyzing trace with hash -748927895, now seen corresponding path program 50 times [2018-12-01 16:05:01,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:01,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:01,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:01,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:01,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:02,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:02,369 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:02,375 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:05:02,400 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:05:02,400 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:02,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:02,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7500 backedges. 0 proven. 7500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:02,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:02,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-12-01 16:05:02,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-12-01 16:05:02,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-12-01 16:05:02,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-12-01 16:05:02,462 INFO L87 Difference]: Start difference. First operand 5930 states and 6926 transitions. Second operand 53 states. [2018-12-01 16:05:02,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:02,756 INFO L93 Difference]: Finished difference Result 11816 states and 14755 transitions. [2018-12-01 16:05:02,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-12-01 16:05:02,757 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 308 [2018-12-01 16:05:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:02,763 INFO L225 Difference]: With dead ends: 11816 [2018-12-01 16:05:02,763 INFO L226 Difference]: Without dead ends: 11814 [2018-12-01 16:05:02,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-12-01 16:05:02,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2018-12-01 16:05:02,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 6077. [2018-12-01 16:05:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6077 states. [2018-12-01 16:05:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 7098 transitions. [2018-12-01 16:05:02,870 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 7098 transitions. Word has length 308 [2018-12-01 16:05:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:02,871 INFO L480 AbstractCegarLoop]: Abstraction has 6077 states and 7098 transitions. [2018-12-01 16:05:02,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-12-01 16:05:02,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 7098 transitions. [2018-12-01 16:05:02,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-12-01 16:05:02,873 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:02,873 INFO L402 BasicCegarLoop]: trace histogram [51, 50, 50, 27, 27, 27, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:02,873 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:02,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:02,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1316205026, now seen corresponding path program 19 times [2018-12-01 16:05:02,874 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:02,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:02,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:02,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:02,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 2557 proven. 2160 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:03,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:03,120 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:03,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:03,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6304 backedges. 2557 proven. 2160 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:03,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:03,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-12-01 16:05:03,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-12-01 16:05:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-12-01 16:05:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-01 16:05:03,203 INFO L87 Difference]: Start difference. First operand 6077 states and 7098 transitions. Second operand 30 states. [2018-12-01 16:05:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:03,300 INFO L93 Difference]: Finished difference Result 12001 states and 14044 transitions. [2018-12-01 16:05:03,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-01 16:05:03,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 310 [2018-12-01 16:05:03,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:03,304 INFO L225 Difference]: With dead ends: 12001 [2018-12-01 16:05:03,304 INFO L226 Difference]: Without dead ends: 6087 [2018-12-01 16:05:03,308 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-12-01 16:05:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6087 states. [2018-12-01 16:05:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6087 to 6083. [2018-12-01 16:05:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6083 states. [2018-12-01 16:05:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 7104 transitions. [2018-12-01 16:05:03,376 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 7104 transitions. Word has length 310 [2018-12-01 16:05:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:03,376 INFO L480 AbstractCegarLoop]: Abstraction has 6083 states and 7104 transitions. [2018-12-01 16:05:03,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-12-01 16:05:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 7104 transitions. [2018-12-01 16:05:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-12-01 16:05:03,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:03,378 INFO L402 BasicCegarLoop]: trace histogram [52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:03,378 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:03,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:03,379 INFO L82 PathProgramCache]: Analyzing trace with hash 288730434, now seen corresponding path program 51 times [2018-12-01 16:05:03,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:03,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:03,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:03,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:03,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:04,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:04,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:04,101 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:05:04,162 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-12-01 16:05:04,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:04,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7803 backedges. 0 proven. 7803 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:04,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:04,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-12-01 16:05:04,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-12-01 16:05:04,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-12-01 16:05:04,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-12-01 16:05:04,226 INFO L87 Difference]: Start difference. First operand 6083 states and 7104 transitions. Second operand 54 states. [2018-12-01 16:05:04,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:04,497 INFO L93 Difference]: Finished difference Result 12117 states and 15130 transitions. [2018-12-01 16:05:04,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-12-01 16:05:04,498 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 314 [2018-12-01 16:05:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:04,504 INFO L225 Difference]: With dead ends: 12117 [2018-12-01 16:05:04,504 INFO L226 Difference]: Without dead ends: 12115 [2018-12-01 16:05:04,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-12-01 16:05:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12115 states. [2018-12-01 16:05:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12115 to 6230. [2018-12-01 16:05:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6230 states. [2018-12-01 16:05:04,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 7276 transitions. [2018-12-01 16:05:04,618 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 7276 transitions. Word has length 314 [2018-12-01 16:05:04,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:04,618 INFO L480 AbstractCegarLoop]: Abstraction has 6230 states and 7276 transitions. [2018-12-01 16:05:04,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-12-01 16:05:04,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 7276 transitions. [2018-12-01 16:05:04,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-12-01 16:05:04,621 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:04,621 INFO L402 BasicCegarLoop]: trace histogram [52, 51, 51, 28, 28, 28, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:04,621 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:04,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:04,621 INFO L82 PathProgramCache]: Analyzing trace with hash 2073446523, now seen corresponding path program 20 times [2018-12-01 16:05:04,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:04,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:04,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:04,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:04,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2650 proven. 2324 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:04,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:04,886 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:04,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:05:04,918 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:05:04,918 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:04,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6561 backedges. 2650 proven. 2324 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:04,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:04,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-12-01 16:05:04,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-01 16:05:04,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-01 16:05:04,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-01 16:05:04,971 INFO L87 Difference]: Start difference. First operand 6230 states and 7276 transitions. Second operand 31 states. [2018-12-01 16:05:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:05,061 INFO L93 Difference]: Finished difference Result 12301 states and 14394 transitions. [2018-12-01 16:05:05,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-01 16:05:05,062 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 316 [2018-12-01 16:05:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:05,066 INFO L225 Difference]: With dead ends: 12301 [2018-12-01 16:05:05,066 INFO L226 Difference]: Without dead ends: 6240 [2018-12-01 16:05:05,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-12-01 16:05:05,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2018-12-01 16:05:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 6236. [2018-12-01 16:05:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6236 states. [2018-12-01 16:05:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 7282 transitions. [2018-12-01 16:05:05,143 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 7282 transitions. Word has length 316 [2018-12-01 16:05:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:05,144 INFO L480 AbstractCegarLoop]: Abstraction has 6236 states and 7282 transitions. [2018-12-01 16:05:05,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-01 16:05:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 7282 transitions. [2018-12-01 16:05:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-12-01 16:05:05,146 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:05,146 INFO L402 BasicCegarLoop]: trace histogram [53, 53, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:05,146 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:05,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:05,146 INFO L82 PathProgramCache]: Analyzing trace with hash 663310171, now seen corresponding path program 52 times [2018-12-01 16:05:05,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:05,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:05,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:05,147 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:05,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:05,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 0 proven. 8112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:05,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:05,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:05,859 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:05:05,885 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:05:05,885 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:05,888 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:07,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8112 backedges. 8111 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-01 16:05:07,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-01 16:05:07,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [54] imperfect sequences [54] total 107 [2018-12-01 16:05:07,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-12-01 16:05:07,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-12-01 16:05:07,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2915, Invalid=8427, Unknown=0, NotChecked=0, Total=11342 [2018-12-01 16:05:07,275 INFO L87 Difference]: Start difference. First operand 6236 states and 7282 transitions. Second operand 107 states. [2018-12-01 16:05:12,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:12,069 INFO L93 Difference]: Finished difference Result 9680 states and 11284 transitions. [2018-12-01 16:05:12,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-12-01 16:05:12,070 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 320 [2018-12-01 16:05:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:12,073 INFO L225 Difference]: With dead ends: 9680 [2018-12-01 16:05:12,073 INFO L226 Difference]: Without dead ends: 3619 [2018-12-01 16:05:12,081 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16750 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=16944, Invalid=50916, Unknown=0, NotChecked=0, Total=67860 [2018-12-01 16:05:12,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2018-12-01 16:05:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 455. [2018-12-01 16:05:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-12-01 16:05:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 477 transitions. [2018-12-01 16:05:12,097 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 477 transitions. Word has length 320 [2018-12-01 16:05:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:12,098 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 477 transitions. [2018-12-01 16:05:12,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-12-01 16:05:12,098 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 477 transitions. [2018-12-01 16:05:12,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-12-01 16:05:12,098 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:12,098 INFO L402 BasicCegarLoop]: trace histogram [53, 52, 52, 29, 29, 29, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:12,099 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:12,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:12,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1267320916, now seen corresponding path program 21 times [2018-12-01 16:05:12,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:12,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:12,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:12,099 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:12,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 2743 proven. 2494 refuted. 0 times theorem prover too weak. 1587 trivial. 0 not checked. [2018-12-01 16:05:12,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:12,393 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:12,398 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:05:12,436 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2018-12-01 16:05:12,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:12,438 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6824 backedges. 2820 proven. 1680 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2018-12-01 16:05:12,968 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:12,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 26] total 57 [2018-12-01 16:05:12,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-12-01 16:05:12,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-12-01 16:05:12,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-12-01 16:05:12,969 INFO L87 Difference]: Start difference. First operand 455 states and 477 transitions. Second operand 57 states. [2018-12-01 16:05:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:13,126 INFO L93 Difference]: Finished difference Result 604 states and 627 transitions. [2018-12-01 16:05:13,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-12-01 16:05:13,127 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 322 [2018-12-01 16:05:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:13,127 INFO L225 Difference]: With dead ends: 604 [2018-12-01 16:05:13,127 INFO L226 Difference]: Without dead ends: 462 [2018-12-01 16:05:13,128 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-12-01 16:05:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2018-12-01 16:05:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2018-12-01 16:05:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-01 16:05:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 481 transitions. [2018-12-01 16:05:13,139 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 481 transitions. Word has length 322 [2018-12-01 16:05:13,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:13,139 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 481 transitions. [2018-12-01 16:05:13,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-12-01 16:05:13,139 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 481 transitions. [2018-12-01 16:05:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-12-01 16:05:13,140 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:13,140 INFO L402 BasicCegarLoop]: trace histogram [56, 55, 55, 31, 31, 31, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:13,140 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:13,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:13,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1022796583, now seen corresponding path program 22 times [2018-12-01 16:05:13,140 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:13,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:13,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:13,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:13,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7635 backedges. 3055 proven. 2852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:13,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:13,457 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:13,462 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:05:13,490 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:05:13,490 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:13,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7635 backedges. 3055 proven. 2852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:13,559 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:13,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-12-01 16:05:13,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-01 16:05:13,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-01 16:05:13,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-12-01 16:05:13,560 INFO L87 Difference]: Start difference. First operand 461 states and 481 transitions. Second operand 34 states. [2018-12-01 16:05:13,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:13,628 INFO L93 Difference]: Finished difference Result 609 states and 629 transitions. [2018-12-01 16:05:13,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-12-01 16:05:13,628 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 340 [2018-12-01 16:05:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:13,629 INFO L225 Difference]: With dead ends: 609 [2018-12-01 16:05:13,629 INFO L226 Difference]: Without dead ends: 461 [2018-12-01 16:05:13,629 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-12-01 16:05:13,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-01 16:05:13,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-01 16:05:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-01 16:05:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 480 transitions. [2018-12-01 16:05:13,638 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 480 transitions. Word has length 340 [2018-12-01 16:05:13,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:13,638 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 480 transitions. [2018-12-01 16:05:13,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-01 16:05:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 480 transitions. [2018-12-01 16:05:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-12-01 16:05:13,639 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:13,639 INFO L402 BasicCegarLoop]: trace histogram [57, 56, 56, 32, 32, 32, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:13,639 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:13,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:13,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1390337614, now seen corresponding path program 23 times [2018-12-01 16:05:13,639 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:13,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:13,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:13,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:13,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 3152 proven. 3040 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:13,955 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:13,955 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:13,962 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:05:14,013 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-12-01 16:05:14,014 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:14,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7920 backedges. 3152 proven. 3040 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:14,074 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:14,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-12-01 16:05:14,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-01 16:05:14,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-01 16:05:14,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-12-01 16:05:14,074 INFO L87 Difference]: Start difference. First operand 461 states and 480 transitions. Second operand 35 states. [2018-12-01 16:05:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:14,148 INFO L93 Difference]: Finished difference Result 609 states and 628 transitions. [2018-12-01 16:05:14,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-01 16:05:14,148 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 346 [2018-12-01 16:05:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:14,149 INFO L225 Difference]: With dead ends: 609 [2018-12-01 16:05:14,149 INFO L226 Difference]: Without dead ends: 461 [2018-12-01 16:05:14,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-12-01 16:05:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-01 16:05:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-01 16:05:14,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-01 16:05:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 479 transitions. [2018-12-01 16:05:14,158 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 479 transitions. Word has length 346 [2018-12-01 16:05:14,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:14,158 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 479 transitions. [2018-12-01 16:05:14,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-01 16:05:14,159 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 479 transitions. [2018-12-01 16:05:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-12-01 16:05:14,159 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:14,159 INFO L402 BasicCegarLoop]: trace histogram [58, 57, 57, 33, 33, 33, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:14,159 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:14,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:14,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2038554677, now seen corresponding path program 24 times [2018-12-01 16:05:14,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:14,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:14,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:14,160 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:14,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3249 proven. 3234 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:14,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:14,527 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:14,536 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:05:14,586 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2018-12-01 16:05:14,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:14,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:14,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8211 backedges. 3249 proven. 3234 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:14,648 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:14,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-12-01 16:05:14,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-12-01 16:05:14,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-12-01 16:05:14,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 16:05:14,649 INFO L87 Difference]: Start difference. First operand 461 states and 479 transitions. Second operand 36 states. [2018-12-01 16:05:14,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:14,716 INFO L93 Difference]: Finished difference Result 609 states and 627 transitions. [2018-12-01 16:05:14,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-01 16:05:14,716 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 352 [2018-12-01 16:05:14,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:14,717 INFO L225 Difference]: With dead ends: 609 [2018-12-01 16:05:14,717 INFO L226 Difference]: Without dead ends: 461 [2018-12-01 16:05:14,717 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-12-01 16:05:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-01 16:05:14,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-01 16:05:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-01 16:05:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 478 transitions. [2018-12-01 16:05:14,726 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 478 transitions. Word has length 352 [2018-12-01 16:05:14,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:14,726 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 478 transitions. [2018-12-01 16:05:14,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-12-01 16:05:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 478 transitions. [2018-12-01 16:05:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-12-01 16:05:14,728 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:14,728 INFO L402 BasicCegarLoop]: trace histogram [59, 58, 58, 34, 34, 34, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:14,728 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:14,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:14,728 INFO L82 PathProgramCache]: Analyzing trace with hash -2078251228, now seen corresponding path program 25 times [2018-12-01 16:05:14,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:14,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:14,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:14,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:14,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8508 backedges. 3346 proven. 3434 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:15,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:15,077 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:15,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:15,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8508 backedges. 3346 proven. 3434 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:15,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:15,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-12-01 16:05:15,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-12-01 16:05:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-12-01 16:05:15,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-01 16:05:15,179 INFO L87 Difference]: Start difference. First operand 461 states and 478 transitions. Second operand 37 states. [2018-12-01 16:05:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:15,246 INFO L93 Difference]: Finished difference Result 609 states and 626 transitions. [2018-12-01 16:05:15,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-12-01 16:05:15,246 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 358 [2018-12-01 16:05:15,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:15,247 INFO L225 Difference]: With dead ends: 609 [2018-12-01 16:05:15,247 INFO L226 Difference]: Without dead ends: 461 [2018-12-01 16:05:15,247 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-12-01 16:05:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-01 16:05:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-01 16:05:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-01 16:05:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 477 transitions. [2018-12-01 16:05:15,256 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 477 transitions. Word has length 358 [2018-12-01 16:05:15,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:15,256 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 477 transitions. [2018-12-01 16:05:15,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-12-01 16:05:15,256 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 477 transitions. [2018-12-01 16:05:15,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-12-01 16:05:15,257 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:15,257 INFO L402 BasicCegarLoop]: trace histogram [60, 59, 59, 35, 35, 35, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:15,257 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:15,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:15,257 INFO L82 PathProgramCache]: Analyzing trace with hash 2126251965, now seen corresponding path program 26 times [2018-12-01 16:05:15,258 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:15,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:15,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:15,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:15,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8811 backedges. 3443 proven. 3640 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:15,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:15,629 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:15,635 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:05:15,665 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:05:15,665 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:15,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8811 backedges. 3443 proven. 3640 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:15,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:15,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-12-01 16:05:15,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-12-01 16:05:15,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-12-01 16:05:15,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-01 16:05:15,730 INFO L87 Difference]: Start difference. First operand 461 states and 477 transitions. Second operand 38 states. [2018-12-01 16:05:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:15,815 INFO L93 Difference]: Finished difference Result 609 states and 625 transitions. [2018-12-01 16:05:15,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-12-01 16:05:15,815 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 364 [2018-12-01 16:05:15,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:15,816 INFO L225 Difference]: With dead ends: 609 [2018-12-01 16:05:15,816 INFO L226 Difference]: Without dead ends: 461 [2018-12-01 16:05:15,816 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-12-01 16:05:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-12-01 16:05:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-12-01 16:05:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-12-01 16:05:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 476 transitions. [2018-12-01 16:05:15,825 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 476 transitions. Word has length 364 [2018-12-01 16:05:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:15,825 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 476 transitions. [2018-12-01 16:05:15,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-12-01 16:05:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 476 transitions. [2018-12-01 16:05:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-12-01 16:05:15,826 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:15,826 INFO L402 BasicCegarLoop]: trace histogram [61, 60, 60, 36, 36, 36, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:15,826 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:15,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:15,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1538855318, now seen corresponding path program 27 times [2018-12-01 16:05:15,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:15,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:15,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:15,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:15,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 3540 proven. 3852 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2018-12-01 16:05:16,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:16,232 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:16,237 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:05:16,278 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2018-12-01 16:05:16,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:16,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 3758 proven. 1928 refuted. 0 times theorem prover too weak. 3434 trivial. 0 not checked. [2018-12-01 16:05:16,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:16,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 28] total 66 [2018-12-01 16:05:16,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-12-01 16:05:16,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-12-01 16:05:16,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-12-01 16:05:16,958 INFO L87 Difference]: Start difference. First operand 461 states and 476 transitions. Second operand 66 states. [2018-12-01 16:05:17,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:17,139 INFO L93 Difference]: Finished difference Result 622 states and 639 transitions. [2018-12-01 16:05:17,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-12-01 16:05:17,140 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 370 [2018-12-01 16:05:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:17,140 INFO L225 Difference]: With dead ends: 622 [2018-12-01 16:05:17,140 INFO L226 Difference]: Without dead ends: 474 [2018-12-01 16:05:17,141 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-12-01 16:05:17,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2018-12-01 16:05:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2018-12-01 16:05:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-01 16:05:17,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 486 transitions. [2018-12-01 16:05:17,152 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 486 transitions. Word has length 370 [2018-12-01 16:05:17,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:17,153 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 486 transitions. [2018-12-01 16:05:17,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-12-01 16:05:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 486 transitions. [2018-12-01 16:05:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-12-01 16:05:17,154 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:17,154 INFO L402 BasicCegarLoop]: trace histogram [65, 64, 64, 38, 38, 38, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:17,154 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:17,155 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1801280018, now seen corresponding path program 28 times [2018-12-01 16:05:17,155 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:17,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:17,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:17,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:17,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10364 backedges. 4042 proven. 4294 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:17,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:17,583 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:17,592 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:05:17,628 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:05:17,628 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:17,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10364 backedges. 4042 proven. 4294 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:17,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:17,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-12-01 16:05:17,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-12-01 16:05:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-12-01 16:05:17,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-01 16:05:17,702 INFO L87 Difference]: Start difference. First operand 473 states and 486 transitions. Second operand 41 states. [2018-12-01 16:05:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:17,778 INFO L93 Difference]: Finished difference Result 633 states and 646 transitions. [2018-12-01 16:05:17,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-12-01 16:05:17,778 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 394 [2018-12-01 16:05:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:17,779 INFO L225 Difference]: With dead ends: 633 [2018-12-01 16:05:17,779 INFO L226 Difference]: Without dead ends: 473 [2018-12-01 16:05:17,779 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-12-01 16:05:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-01 16:05:17,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-01 16:05:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-01 16:05:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 485 transitions. [2018-12-01 16:05:17,789 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 485 transitions. Word has length 394 [2018-12-01 16:05:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:17,789 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 485 transitions. [2018-12-01 16:05:17,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-12-01 16:05:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 485 transitions. [2018-12-01 16:05:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-12-01 16:05:17,790 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:17,790 INFO L402 BasicCegarLoop]: trace histogram [66, 65, 65, 39, 39, 39, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:17,790 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:17,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:17,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1094430215, now seen corresponding path program 29 times [2018-12-01 16:05:17,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:17,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:17,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:17,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:17,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10699 backedges. 4147 proven. 4524 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:18,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:18,236 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:18,244 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:05:18,306 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2018-12-01 16:05:18,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:18,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10699 backedges. 4147 proven. 4524 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:18,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:18,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-12-01 16:05:18,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-12-01 16:05:18,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-12-01 16:05:18,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-12-01 16:05:18,382 INFO L87 Difference]: Start difference. First operand 473 states and 485 transitions. Second operand 42 states. [2018-12-01 16:05:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:18,475 INFO L93 Difference]: Finished difference Result 633 states and 645 transitions. [2018-12-01 16:05:18,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-12-01 16:05:18,475 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 400 [2018-12-01 16:05:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:18,475 INFO L225 Difference]: With dead ends: 633 [2018-12-01 16:05:18,475 INFO L226 Difference]: Without dead ends: 473 [2018-12-01 16:05:18,476 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-12-01 16:05:18,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-01 16:05:18,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-01 16:05:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-01 16:05:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 484 transitions. [2018-12-01 16:05:18,485 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 484 transitions. Word has length 400 [2018-12-01 16:05:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:18,485 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 484 transitions. [2018-12-01 16:05:18,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-12-01 16:05:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 484 transitions. [2018-12-01 16:05:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-12-01 16:05:18,486 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:18,486 INFO L402 BasicCegarLoop]: trace histogram [67, 66, 66, 40, 40, 40, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:18,487 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:18,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:18,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1284866208, now seen corresponding path program 30 times [2018-12-01 16:05:18,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:18,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:18,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:18,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:18,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11040 backedges. 4252 proven. 4760 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:18,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:18,963 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:18,969 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:05:19,030 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2018-12-01 16:05:19,030 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:19,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11040 backedges. 4252 proven. 4760 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:19,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:19,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-12-01 16:05:19,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-12-01 16:05:19,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-12-01 16:05:19,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-12-01 16:05:19,112 INFO L87 Difference]: Start difference. First operand 473 states and 484 transitions. Second operand 43 states. [2018-12-01 16:05:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:19,201 INFO L93 Difference]: Finished difference Result 633 states and 644 transitions. [2018-12-01 16:05:19,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-12-01 16:05:19,202 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 406 [2018-12-01 16:05:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:19,202 INFO L225 Difference]: With dead ends: 633 [2018-12-01 16:05:19,202 INFO L226 Difference]: Without dead ends: 473 [2018-12-01 16:05:19,202 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-12-01 16:05:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-01 16:05:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-01 16:05:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-01 16:05:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 483 transitions. [2018-12-01 16:05:19,212 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 483 transitions. Word has length 406 [2018-12-01 16:05:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:19,212 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 483 transitions. [2018-12-01 16:05:19,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-12-01 16:05:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 483 transitions. [2018-12-01 16:05:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-12-01 16:05:19,213 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:19,213 INFO L402 BasicCegarLoop]: trace histogram [68, 67, 67, 41, 41, 41, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:19,213 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:19,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:19,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1518130695, now seen corresponding path program 31 times [2018-12-01 16:05:19,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:19,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:19,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:19,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:19,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11387 backedges. 4357 proven. 5002 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:19,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:19,703 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:19,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:19,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 11387 backedges. 4357 proven. 5002 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:19,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:19,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-12-01 16:05:19,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-12-01 16:05:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-12-01 16:05:19,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 16:05:19,826 INFO L87 Difference]: Start difference. First operand 473 states and 483 transitions. Second operand 44 states. [2018-12-01 16:05:19,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:19,914 INFO L93 Difference]: Finished difference Result 633 states and 643 transitions. [2018-12-01 16:05:19,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-01 16:05:19,914 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 412 [2018-12-01 16:05:19,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:19,915 INFO L225 Difference]: With dead ends: 633 [2018-12-01 16:05:19,915 INFO L226 Difference]: Without dead ends: 473 [2018-12-01 16:05:19,915 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-12-01 16:05:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-01 16:05:19,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-01 16:05:19,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-01 16:05:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 482 transitions. [2018-12-01 16:05:19,927 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 482 transitions. Word has length 412 [2018-12-01 16:05:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:19,927 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 482 transitions. [2018-12-01 16:05:19,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-12-01 16:05:19,927 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 482 transitions. [2018-12-01 16:05:19,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-12-01 16:05:19,929 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:19,929 INFO L402 BasicCegarLoop]: trace histogram [69, 68, 68, 42, 42, 42, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:19,929 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:19,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:19,929 INFO L82 PathProgramCache]: Analyzing trace with hash 646823378, now seen corresponding path program 32 times [2018-12-01 16:05:19,929 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:19,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:19,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:19,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:19,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 11740 backedges. 4462 proven. 5250 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:20,452 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:20,452 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:20,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:05:20,491 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:05:20,491 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:20,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 11740 backedges. 4462 proven. 5250 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:20,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:20,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-12-01 16:05:20,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-12-01 16:05:20,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-12-01 16:05:20,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-12-01 16:05:20,573 INFO L87 Difference]: Start difference. First operand 473 states and 482 transitions. Second operand 45 states. [2018-12-01 16:05:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:20,666 INFO L93 Difference]: Finished difference Result 633 states and 642 transitions. [2018-12-01 16:05:20,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-12-01 16:05:20,666 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 418 [2018-12-01 16:05:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:20,667 INFO L225 Difference]: With dead ends: 633 [2018-12-01 16:05:20,667 INFO L226 Difference]: Without dead ends: 473 [2018-12-01 16:05:20,667 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-12-01 16:05:20,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-12-01 16:05:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-12-01 16:05:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-12-01 16:05:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 481 transitions. [2018-12-01 16:05:20,676 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 481 transitions. Word has length 418 [2018-12-01 16:05:20,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:20,677 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 481 transitions. [2018-12-01 16:05:20,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-12-01 16:05:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 481 transitions. [2018-12-01 16:05:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-12-01 16:05:20,678 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:20,678 INFO L402 BasicCegarLoop]: trace histogram [70, 69, 69, 43, 43, 43, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:20,678 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:20,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1128680171, now seen corresponding path program 33 times [2018-12-01 16:05:20,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:20,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:20,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:20,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:20,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 12099 backedges. 4567 proven. 5504 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2018-12-01 16:05:21,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:21,217 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:21,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:05:21,275 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-12-01 16:05:21,275 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:21,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12099 backedges. 4716 proven. 2133 refuted. 0 times theorem prover too weak. 5250 trivial. 0 not checked. [2018-12-01 16:05:22,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:22,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 29] total 74 [2018-12-01 16:05:22,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-12-01 16:05:22,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-12-01 16:05:22,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-12-01 16:05:22,058 INFO L87 Difference]: Start difference. First operand 473 states and 481 transitions. Second operand 74 states. [2018-12-01 16:05:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:22,311 INFO L93 Difference]: Finished difference Result 640 states and 649 transitions. [2018-12-01 16:05:22,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-12-01 16:05:22,311 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 424 [2018-12-01 16:05:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:22,311 INFO L225 Difference]: With dead ends: 640 [2018-12-01 16:05:22,312 INFO L226 Difference]: Without dead ends: 480 [2018-12-01 16:05:22,312 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-12-01 16:05:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-12-01 16:05:22,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2018-12-01 16:05:22,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-01 16:05:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 485 transitions. [2018-12-01 16:05:22,324 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 485 transitions. Word has length 424 [2018-12-01 16:05:22,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:22,324 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 485 transitions. [2018-12-01 16:05:22,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-12-01 16:05:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 485 transitions. [2018-12-01 16:05:22,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-12-01 16:05:22,325 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:22,325 INFO L402 BasicCegarLoop]: trace histogram [73, 72, 72, 45, 45, 45, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:22,325 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:22,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:22,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1209580720, now seen corresponding path program 34 times [2018-12-01 16:05:22,326 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:22,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:22,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:22,326 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:22,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 13176 backedges. 4959 proven. 6030 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:22,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:22,924 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:22,930 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:05:22,967 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:05:22,967 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:22,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13176 backedges. 4959 proven. 6030 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:23,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:23,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-12-01 16:05:23,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-12-01 16:05:23,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-12-01 16:05:23,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-12-01 16:05:23,056 INFO L87 Difference]: Start difference. First operand 479 states and 485 transitions. Second operand 48 states. [2018-12-01 16:05:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:23,158 INFO L93 Difference]: Finished difference Result 645 states and 651 transitions. [2018-12-01 16:05:23,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-12-01 16:05:23,158 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 442 [2018-12-01 16:05:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:23,159 INFO L225 Difference]: With dead ends: 645 [2018-12-01 16:05:23,159 INFO L226 Difference]: Without dead ends: 479 [2018-12-01 16:05:23,159 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-12-01 16:05:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-01 16:05:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-01 16:05:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-01 16:05:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 484 transitions. [2018-12-01 16:05:23,170 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 484 transitions. Word has length 442 [2018-12-01 16:05:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:23,171 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 484 transitions. [2018-12-01 16:05:23,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-12-01 16:05:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 484 transitions. [2018-12-01 16:05:23,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-12-01 16:05:23,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:23,172 INFO L402 BasicCegarLoop]: trace histogram [74, 73, 73, 46, 46, 46, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:23,172 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:23,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:23,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1072811721, now seen corresponding path program 35 times [2018-12-01 16:05:23,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:23,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:23,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:23,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:23,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13557 backedges. 5068 proven. 6302 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:23,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:23,784 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:23,789 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:05:23,865 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-12-01 16:05:23,865 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:23,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13557 backedges. 5068 proven. 6302 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:23,972 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:23,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-12-01 16:05:23,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-12-01 16:05:23,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-12-01 16:05:23,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-12-01 16:05:23,973 INFO L87 Difference]: Start difference. First operand 479 states and 484 transitions. Second operand 49 states. [2018-12-01 16:05:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:24,077 INFO L93 Difference]: Finished difference Result 645 states and 650 transitions. [2018-12-01 16:05:24,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-12-01 16:05:24,077 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 448 [2018-12-01 16:05:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:24,078 INFO L225 Difference]: With dead ends: 645 [2018-12-01 16:05:24,078 INFO L226 Difference]: Without dead ends: 479 [2018-12-01 16:05:24,078 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-12-01 16:05:24,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-01 16:05:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-01 16:05:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-01 16:05:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 483 transitions. [2018-12-01 16:05:24,090 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 483 transitions. Word has length 448 [2018-12-01 16:05:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:24,090 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 483 transitions. [2018-12-01 16:05:24,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-12-01 16:05:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 483 transitions. [2018-12-01 16:05:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-12-01 16:05:24,091 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:24,091 INFO L402 BasicCegarLoop]: trace histogram [75, 74, 74, 47, 47, 47, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:24,091 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:24,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:24,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1951323614, now seen corresponding path program 36 times [2018-12-01 16:05:24,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:24,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:24,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:24,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:24,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 5177 proven. 6580 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:24,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:24,755 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:24,761 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-01 16:05:24,835 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-12-01 16:05:24,835 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:24,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 13944 backedges. 5177 proven. 6580 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:24,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:24,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-12-01 16:05:24,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-12-01 16:05:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-12-01 16:05:24,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-12-01 16:05:24,934 INFO L87 Difference]: Start difference. First operand 479 states and 483 transitions. Second operand 50 states. [2018-12-01 16:05:25,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:25,045 INFO L93 Difference]: Finished difference Result 645 states and 649 transitions. [2018-12-01 16:05:25,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-12-01 16:05:25,045 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 454 [2018-12-01 16:05:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:25,046 INFO L225 Difference]: With dead ends: 645 [2018-12-01 16:05:25,046 INFO L226 Difference]: Without dead ends: 479 [2018-12-01 16:05:25,046 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-12-01 16:05:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-01 16:05:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-01 16:05:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-01 16:05:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 482 transitions. [2018-12-01 16:05:25,056 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 482 transitions. Word has length 454 [2018-12-01 16:05:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:25,056 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 482 transitions. [2018-12-01 16:05:25,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-12-01 16:05:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 482 transitions. [2018-12-01 16:05:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-12-01 16:05:25,057 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:25,057 INFO L402 BasicCegarLoop]: trace histogram [76, 75, 75, 48, 48, 48, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:25,057 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:25,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:25,057 INFO L82 PathProgramCache]: Analyzing trace with hash 122347195, now seen corresponding path program 37 times [2018-12-01 16:05:25,057 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:25,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:25,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:25,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:25,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14337 backedges. 5286 proven. 6864 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:25,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:25,706 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:25,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:25,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14337 backedges. 5286 proven. 6864 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:25,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:25,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-12-01 16:05:25,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-12-01 16:05:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-12-01 16:05:25,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-01 16:05:25,848 INFO L87 Difference]: Start difference. First operand 479 states and 482 transitions. Second operand 51 states. [2018-12-01 16:05:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:25,967 INFO L93 Difference]: Finished difference Result 645 states and 648 transitions. [2018-12-01 16:05:25,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-12-01 16:05:25,967 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 460 [2018-12-01 16:05:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:25,968 INFO L225 Difference]: With dead ends: 645 [2018-12-01 16:05:25,968 INFO L226 Difference]: Without dead ends: 479 [2018-12-01 16:05:25,968 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-12-01 16:05:25,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-01 16:05:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-01 16:05:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-01 16:05:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 481 transitions. [2018-12-01 16:05:25,978 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 481 transitions. Word has length 460 [2018-12-01 16:05:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:25,978 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 481 transitions. [2018-12-01 16:05:25,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-12-01 16:05:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 481 transitions. [2018-12-01 16:05:25,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-12-01 16:05:25,979 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:25,979 INFO L402 BasicCegarLoop]: trace histogram [77, 76, 76, 49, 49, 49, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:25,979 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:25,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:25,980 INFO L82 PathProgramCache]: Analyzing trace with hash 728169620, now seen corresponding path program 38 times [2018-12-01 16:05:25,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:25,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:25,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:25,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 16:05:25,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14736 backedges. 5395 proven. 7154 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:26,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:26,659 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:26,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-01 16:05:26,702 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-01 16:05:26,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:26,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 14736 backedges. 5395 proven. 7154 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:26,803 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:26,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-12-01 16:05:26,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-12-01 16:05:26,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-12-01 16:05:26,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-12-01 16:05:26,804 INFO L87 Difference]: Start difference. First operand 479 states and 481 transitions. Second operand 52 states. [2018-12-01 16:05:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:26,911 INFO L93 Difference]: Finished difference Result 645 states and 647 transitions. [2018-12-01 16:05:26,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-12-01 16:05:26,911 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 466 [2018-12-01 16:05:26,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:26,912 INFO L225 Difference]: With dead ends: 645 [2018-12-01 16:05:26,912 INFO L226 Difference]: Without dead ends: 479 [2018-12-01 16:05:26,912 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-12-01 16:05:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-01 16:05:26,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-01 16:05:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-01 16:05:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 480 transitions. [2018-12-01 16:05:26,922 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 480 transitions. Word has length 466 [2018-12-01 16:05:26,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:26,922 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 480 transitions. [2018-12-01 16:05:26,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-12-01 16:05:26,922 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 480 transitions. [2018-12-01 16:05:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-12-01 16:05:26,923 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:26,923 INFO L402 BasicCegarLoop]: trace histogram [78, 77, 77, 50, 50, 50, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:26,923 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:26,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:26,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1235119187, now seen corresponding path program 39 times [2018-12-01 16:05:26,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:26,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:26,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:26,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:26,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15141 backedges. 5504 proven. 7450 refuted. 0 times theorem prover too weak. 2187 trivial. 0 not checked. [2018-12-01 16:05:27,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:27,617 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:27,625 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-01 16:05:27,676 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2018-12-01 16:05:27,676 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:27,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 15141 backedges. 5866 proven. 2411 refuted. 0 times theorem prover too weak. 6864 trivial. 0 not checked. [2018-12-01 16:05:28,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:28,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 31] total 82 [2018-12-01 16:05:28,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-12-01 16:05:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-12-01 16:05:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-12-01 16:05:28,637 INFO L87 Difference]: Start difference. First operand 479 states and 480 transitions. Second operand 82 states. [2018-12-01 16:05:28,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:28,938 INFO L93 Difference]: Finished difference Result 658 states and 661 transitions. [2018-12-01 16:05:28,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-12-01 16:05:28,938 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 472 [2018-12-01 16:05:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:28,939 INFO L225 Difference]: With dead ends: 658 [2018-12-01 16:05:28,939 INFO L226 Difference]: Without dead ends: 492 [2018-12-01 16:05:28,939 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-12-01 16:05:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2018-12-01 16:05:28,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2018-12-01 16:05:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-12-01 16:05:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2018-12-01 16:05:28,952 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 472 [2018-12-01 16:05:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:28,952 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2018-12-01 16:05:28,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-12-01 16:05:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2018-12-01 16:05:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-12-01 16:05:28,953 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:28,953 INFO L402 BasicCegarLoop]: trace histogram [81, 80, 80, 51, 51, 51, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:28,953 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:28,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1075368980, now seen corresponding path program 40 times [2018-12-01 16:05:28,954 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:28,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:28,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:28,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:28,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 6693 proven. 3027 refuted. 0 times theorem prover too weak. 6580 trivial. 0 not checked. [2018-12-01 16:05:29,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:29,350 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:29,356 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-01 16:05:29,396 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-01 16:05:29,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:29,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16300 backedges. 160 proven. 16140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 16:05:30,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:30,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 82] total 82 [2018-12-01 16:05:30,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-12-01 16:05:30,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-12-01 16:05:30,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-12-01 16:05:30,701 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 83 states. [2018-12-01 16:05:30,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:30,941 INFO L93 Difference]: Finished difference Result 799 states and 849 transitions. [2018-12-01 16:05:30,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-12-01 16:05:30,941 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 490 [2018-12-01 16:05:30,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:30,941 INFO L225 Difference]: With dead ends: 799 [2018-12-01 16:05:30,942 INFO L226 Difference]: Without dead ends: 798 [2018-12-01 16:05:30,942 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-12-01 16:05:30,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2018-12-01 16:05:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 797. [2018-12-01 16:05:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-12-01 16:05:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 797 transitions. [2018-12-01 16:05:30,966 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 797 transitions. Word has length 490 [2018-12-01 16:05:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:30,966 INFO L480 AbstractCegarLoop]: Abstraction has 797 states and 797 transitions. [2018-12-01 16:05:30,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-12-01 16:05:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 797 transitions. [2018-12-01 16:05:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2018-12-01 16:05:30,969 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 16:05:30,969 INFO L402 BasicCegarLoop]: trace histogram [132, 131, 131, 81, 81, 81, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-12-01 16:05:30,969 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-01 16:05:30,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 16:05:30,969 INFO L82 PathProgramCache]: Analyzing trace with hash -720631691, now seen corresponding path program 41 times [2018-12-01 16:05:30,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 16:05:30,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 16:05:30,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:30,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 16:05:30,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 16:05:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 16:05:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 43483 backedges. 30529 proven. 12752 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-12-01 16:05:32,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-01 16:05:32,184 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-01 16:05:32,190 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-01 16:05:32,371 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 82 check-sat command(s) [2018-12-01 16:05:32,371 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-01 16:05:32,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 16:05:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 43483 backedges. 30525 proven. 12752 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2018-12-01 16:05:32,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-01 16:05:32,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 83 [2018-12-01 16:05:32,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-12-01 16:05:32,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-12-01 16:05:32,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-12-01 16:05:32,695 INFO L87 Difference]: Start difference. First operand 797 states and 797 transitions. Second operand 83 states. [2018-12-01 16:05:33,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 16:05:33,063 INFO L93 Difference]: Finished difference Result 797 states and 797 transitions. [2018-12-01 16:05:33,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-12-01 16:05:33,064 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 796 [2018-12-01 16:05:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 16:05:33,064 INFO L225 Difference]: With dead ends: 797 [2018-12-01 16:05:33,064 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 16:05:33,065 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2958 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-12-01 16:05:33,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 16:05:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 16:05:33,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 16:05:33,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 16:05:33,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 796 [2018-12-01 16:05:33,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 16:05:33,066 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 16:05:33,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-12-01 16:05:33,066 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 16:05:33,066 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 16:05:33,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 16:05:33,439 WARN L180 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 982 DAG size of output: 455 [2018-12-01 16:05:35,055 WARN L180 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 451 DAG size of output: 400 [2018-12-01 16:05:35,058 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-01 16:05:35,058 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 27) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L19(lines 19 23) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L19-2(lines 19 23) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 27) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 27) the Hoare annotation is: true [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-12-01 16:05:35,058 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-12-01 16:05:35,059 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-12-01 16:05:35,059 INFO L444 ceAbstractionStarter]: At program point L18-2(lines 18 25) the Hoare annotation is: (let ((.cse20 (<= main_~y~0 28)) (.cse8 (<= 51 main_~x~0))) (let ((.cse5 (<= main_~y~0 18)) (.cse13 (<= main_~y~0 43)) (.cse7 (<= main_~y~0 47)) (.cse16 (<= main_~y~0 9)) (.cse3 (<= main_~y~0 20)) (.cse31 (<= main_~y~0 6)) (.cse34 (<= main_~y~0 26)) (.cse30 (<= main_~y~0 1)) (.cse6 (<= main_~y~0 2)) (.cse19 (<= main_~y~0 39)) (.cse9 (<= main_~y~0 38)) (.cse25 (<= main_~y~0 35)) (.cse21 (<= main_~y~0 34)) (.cse10 (<= main_~y~0 17)) (.cse41 (<= main_~y~0 41)) (.cse24 (<= main_~y~0 14)) (.cse37 (<= main_~y~0 32)) (.cse15 (<= main_~y~0 22)) (.cse17 (<= main_~y~0 33)) (.cse32 (<= main_~y~0 19)) (.cse35 (<= main_~y~0 36)) (.cse27 (<= main_~y~0 45)) (.cse33 (<= main_~y~0 27)) (.cse28 (<= main_~y~0 3)) (.cse44 (<= main_~y~0 23)) (.cse36 (<= main_~y~0 10)) (.cse42 (<= main_~y~0 31)) (.cse40 (<= main_~y~0 11)) (.cse50 (<= main_~y~0 15)) (.cse0 (<= main_~y~0 42)) (.cse39 (<= main_~y~0 7)) (.cse49 (<= main_~y~0 24)) (.cse51 (<= main_~y~0 50)) (.cse29 (<= main_~y~0 12)) (.cse46 (<= main_~y~0 13)) (.cse53 (<= main_~y~0 16)) (.cse26 (<= main_~y~0 21)) (.cse45 (<= main_~y~0 8)) (.cse23 (<= main_~y~0 49)) (.cse54 (<= main_~y~0 30)) (.cse4 (<= main_~y~0 25)) (.cse14 (<= main_~y~0 48)) (.cse43 (<= main_~y~0 40)) (.cse22 (<= main_~y~0 44)) (.cse11 (<= main_~x~0 50)) (.cse12 (<= main_~y~0 37)) (.cse18 (<= main_~y~0 29)) (.cse1 (<= main_~x~0 51)) (.cse47 (<= main_~y~0 46)) (.cse48 (<= main_~y~0 4)) (.cse52 (<= main_~y~0 5)) (.cse2 (and .cse20 .cse8)) (.cse38 (<= main_~y~0 0))) (or (and .cse0 .cse1 (<= 42 main_~x~0)) (and .cse2 .cse3 (<= main_~x~0 82)) (and .cse2 (<= main_~x~0 77) .cse4) (and .cse2 .cse5 (<= main_~x~0 84)) (and .cse2 (<= main_~x~0 100) .cse6) (and .cse7 (<= 47 main_~x~0) .cse1) (and (<= main_~x~0 64) .cse8 .cse9) (and .cse2 .cse10 (<= main_~x~0 85)) (and .cse11 .cse5 (<= 18 main_~x~0)) (and .cse8 .cse12 (<= main_~x~0 65)) (and .cse8 .cse13 (<= main_~x~0 59)) (and .cse8 (<= main_~x~0 54) .cse14) (and .cse2 (<= main_~x~0 80) .cse15) (and (<= 9 main_~x~0) .cse1 .cse16) (and (<= 43 main_~x~0) .cse13 (<= main_~x~0 43)) (and .cse17 .cse1 (<= 33 main_~x~0)) (and .cse18 (<= main_~x~0 29) (<= 29 main_~x~0)) (and .cse7 (<= main_~x~0 55) .cse8) (and .cse2 (<= (+ main_~y~0 1) 0) (<= main_~x~0 103)) (and (<= main_~x~0 63) .cse8 .cse19) (and .cse20 (<= 28 main_~x~0) .cse1) (and .cse21 .cse8 (<= main_~x~0 68)) (and (<= 44 main_~x~0) (<= main_~x~0 44) .cse22) (and (<= 49 main_~x~0) (<= main_~x~0 49) .cse23) (and .cse2 (<= main_~x~0 88) .cse24) (and .cse2 .cse16 (<= main_~x~0 93)) (and .cse25 .cse8 (<= main_~x~0 67)) (and .cse26 .cse2 (<= main_~x~0 81)) (and .cse27 .cse8 (<= main_~x~0 57)) (and .cse2 (<= main_~x~0 99) .cse28) (and .cse2 .cse29 (<= main_~x~0 90)) (and (<= 20 main_~x~0) .cse3 (<= main_~x~0 20)) (and .cse1 (<= 1 main_~x~0) .cse30) (and .cse2 (<= main_~x~0 96) .cse31) (and .cse2 (<= main_~x~0 83) .cse32) (and .cse2 (<= main_~x~0 75) .cse33) (and .cse31 (<= main_~x~0 6) (<= 6 main_~x~0)) (and .cse1 .cse34 (<= 26 main_~x~0)) (and .cse35 (<= main_~x~0 36) (<= 36 main_~x~0)) (and .cse2 (<= main_~x~0 76) .cse34) (and .cse36 .cse2 (<= main_~x~0 92)) (and .cse2 .cse30 (<= main_~x~0 101)) (and (<= 2 main_~x~0) .cse6 (<= main_~x~0 2)) (and .cse2 (<= main_~x~0 74)) (and (<= 39 main_~x~0) .cse1 .cse19) (and (<= main_~x~0 32) (<= 32 main_~x~0) .cse37) (and (<= main_~x~0 38) .cse9 (<= 38 main_~x~0)) (and (<= main_~x~0 0) (<= 0 main_~x~0) .cse38) (and (<= main_~x~0 95) .cse2 .cse39) (and .cse40 (<= 11 main_~x~0) (<= main_~x~0 11)) (and .cse41 .cse8 (<= main_~x~0 61)) (and (<= 35 main_~x~0) .cse25 (<= main_~x~0 35)) (and .cse8 (<= main_~x~0 71) .cse42) (and (<= 34 main_~x~0) .cse21 .cse1) (and .cse43 (<= main_~x~0 62) .cse8) (and .cse10 (<= 17 main_~x~0) .cse1) (and .cse2 (<= main_~x~0 79) .cse44) (and .cse41 (<= 41 main_~x~0) (<= main_~x~0 41)) (and .cse2 (<= main_~x~0 94) .cse45) (and .cse11 .cse24 (<= 14 main_~x~0)) (and (<= main_~x~0 70) .cse8 .cse37) (and (<= main_~x~0 22) .cse15 (<= 22 main_~x~0)) (and .cse46 (<= 13 main_~x~0) .cse1) (and (<= main_~x~0 56) .cse8 .cse47) (and .cse17 .cse8 (<= main_~x~0 69)) (and .cse32 (<= main_~x~0 19) (<= 19 main_~x~0)) (and .cse35 .cse8 (<= main_~x~0 66)) (and (<= 45 main_~x~0) .cse27 (<= main_~x~0 45)) (and (<= main_~x~0 27) .cse33 (<= 27 main_~x~0)) (and .cse1 .cse28 (<= 3 main_~x~0)) (and .cse44 .cse1 (<= 23 main_~x~0)) (and .cse48 .cse2 (<= main_~x~0 98)) (and .cse49 .cse1 (<= 24 main_~x~0)) (and .cse2 (<= main_~x~0 87) .cse50) (and .cse36 .cse11 (<= 10 main_~x~0)) (and (<= 31 main_~x~0) (<= main_~x~0 31) .cse42) (and .cse40 .cse2 (<= main_~x~0 91)) (and .cse51 .cse8 (<= main_~x~0 52)) (and (<= 15 main_~x~0) .cse50 (<= main_~x~0 15)) (and .cse2 .cse52 (<= main_~x~0 97)) (and .cse0 .cse8 (<= main_~x~0 60)) (and (<= 16 main_~x~0) .cse53 .cse1) (and .cse39 (<= main_~x~0 7) (<= 7 main_~x~0)) (and (<= main_~x~0 78) .cse2 .cse49) (and .cse51 (<= 50 main_~x~0) .cse11) (and (<= 12 main_~x~0) .cse1 .cse29) (and .cse46 .cse2 (<= main_~x~0 89)) (and (<= 30 main_~x~0) (<= main_~x~0 30) .cse54) (and .cse2 .cse53 (<= main_~x~0 86)) (and .cse26 (<= 21 main_~x~0) (<= main_~x~0 21)) (and (<= 8 main_~x~0) (<= main_~x~0 8) .cse45) (and .cse1 .cse8 (<= main_~y~0 51)) (and (<= main_~x~0 53) .cse8 .cse23) (and .cse8 (<= main_~x~0 72) .cse54) (and (<= 25 main_~x~0) .cse4 (<= main_~x~0 25)) (and (<= 48 main_~x~0) (<= main_~x~0 48) .cse14) (and .cse43 .cse1 (<= 40 main_~x~0)) (and (<= main_~x~0 58) .cse8 .cse22) (and (<= 37 main_~x~0) .cse11 .cse12) (and .cse18 (<= main_~x~0 73) .cse8) (and (<= 46 main_~x~0) .cse1 .cse47) (and .cse48 (<= 4 main_~x~0) (<= main_~x~0 4)) (and (<= 5 main_~x~0) .cse52 (<= main_~x~0 5)) (and .cse2 (<= main_~x~0 102) .cse38)))) [2018-12-01 16:05:35,059 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-12-01 16:05:35,060 INFO L448 ceAbstractionStarter]: For program point L18-3(lines 18 25) no Hoare annotation was computed. [2018-12-01 16:05:35,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 04:05:35 BoogieIcfgContainer [2018-12-01 16:05:35,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 16:05:35,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 16:05:35,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 16:05:35,077 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 16:05:35,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 04:04:30" (3/4) ... [2018-12-01 16:05:35,080 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-01 16:05:35,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-01 16:05:35,085 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-01 16:05:35,087 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-01 16:05:35,087 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-01 16:05:35,087 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-01 16:05:35,112 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2cd9a7f0-a896-4a90-b862-571503ec8fcb/bin-2019/uautomizer/witness.graphml [2018-12-01 16:05:35,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 16:05:35,112 INFO L168 Benchmark]: Toolchain (without parser) took 65299.49 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 515.9 MB). Free memory was 961.3 MB in the beginning and 939.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 538.2 MB. Max. memory is 11.5 GB. [2018-12-01 16:05:35,113 INFO L168 Benchmark]: CDTParser took 0.10 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. [2018-12-01 16:05:35,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.84 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 16:05:35,113 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. [2018-12-01 16:05:35,113 INFO L168 Benchmark]: Boogie Preprocessor took 12.03 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. [2018-12-01 16:05:35,113 INFO L168 Benchmark]: RCFGBuilder took 148.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-01 16:05:35,113 INFO L168 Benchmark]: TraceAbstraction took 64973.71 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 436.2 MB). Free memory was 1.1 GB in the beginning and 939.1 MB in the end (delta: 119.5 MB). Peak memory consumption was 805.8 MB. Max. memory is 11.5 GB. [2018-12-01 16:05:35,113 INFO L168 Benchmark]: Witness Printer took 34.95 ms. Allocated memory is still 1.5 GB. Free memory was 939.1 MB in the beginning and 939.1 MB in the end (delta: 2.1 kB). Peak memory consumption was 2.1 kB. Max. memory is 11.5 GB. [2018-12-01 16:05:35,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.84 ms. Allocated memory is still 1.0 GB. Free memory was 961.3 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 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 12.03 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 148.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.7 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -108.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 64973.71 ms. Allocated memory was 1.1 GB in the beginning and 1.5 GB in the end (delta: 436.2 MB). Free memory was 1.1 GB in the beginning and 939.1 MB in the end (delta: 119.5 MB). Peak memory consumption was 805.8 MB. Max. memory is 11.5 GB. * Witness Printer took 34.95 ms. Allocated memory is still 1.5 GB. Free memory was 939.1 MB in the beginning and 939.1 MB in the end (delta: 2.1 kB). Peak memory consumption was 2.1 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((y <= 42 && x <= 51) && 42 <= x) || (((y <= 28 && 51 <= x) && y <= 20) && x <= 82)) || (((y <= 28 && 51 <= x) && x <= 77) && y <= 25)) || (((y <= 28 && 51 <= x) && y <= 18) && x <= 84)) || (((y <= 28 && 51 <= x) && x <= 100) && y <= 2)) || ((y <= 47 && 47 <= x) && x <= 51)) || ((x <= 64 && 51 <= x) && y <= 38)) || (((y <= 28 && 51 <= x) && y <= 17) && x <= 85)) || ((x <= 50 && y <= 18) && 18 <= x)) || ((51 <= x && y <= 37) && x <= 65)) || ((51 <= x && y <= 43) && x <= 59)) || ((51 <= x && x <= 54) && y <= 48)) || (((y <= 28 && 51 <= x) && x <= 80) && y <= 22)) || ((9 <= x && x <= 51) && y <= 9)) || ((43 <= x && y <= 43) && x <= 43)) || ((y <= 33 && x <= 51) && 33 <= x)) || ((y <= 29 && x <= 29) && 29 <= x)) || ((y <= 47 && x <= 55) && 51 <= x)) || (((y <= 28 && 51 <= x) && y + 1 <= 0) && x <= 103)) || ((x <= 63 && 51 <= x) && y <= 39)) || ((y <= 28 && 28 <= x) && x <= 51)) || ((y <= 34 && 51 <= x) && x <= 68)) || ((44 <= x && x <= 44) && y <= 44)) || ((49 <= x && x <= 49) && y <= 49)) || (((y <= 28 && 51 <= x) && x <= 88) && y <= 14)) || (((y <= 28 && 51 <= x) && y <= 9) && x <= 93)) || ((y <= 35 && 51 <= x) && x <= 67)) || ((y <= 21 && y <= 28 && 51 <= x) && x <= 81)) || ((y <= 45 && 51 <= x) && x <= 57)) || (((y <= 28 && 51 <= x) && x <= 99) && y <= 3)) || (((y <= 28 && 51 <= x) && y <= 12) && x <= 90)) || ((20 <= x && y <= 20) && x <= 20)) || ((x <= 51 && 1 <= x) && y <= 1)) || (((y <= 28 && 51 <= x) && x <= 96) && y <= 6)) || (((y <= 28 && 51 <= x) && x <= 83) && y <= 19)) || (((y <= 28 && 51 <= x) && x <= 75) && y <= 27)) || ((y <= 6 && x <= 6) && 6 <= x)) || ((x <= 51 && y <= 26) && 26 <= x)) || ((y <= 36 && x <= 36) && 36 <= x)) || (((y <= 28 && 51 <= x) && x <= 76) && y <= 26)) || ((y <= 10 && y <= 28 && 51 <= x) && x <= 92)) || (((y <= 28 && 51 <= x) && y <= 1) && x <= 101)) || ((2 <= x && y <= 2) && x <= 2)) || ((y <= 28 && 51 <= x) && x <= 74)) || ((39 <= x && x <= 51) && y <= 39)) || ((x <= 32 && 32 <= x) && y <= 32)) || ((x <= 38 && y <= 38) && 38 <= x)) || ((x <= 0 && 0 <= x) && y <= 0)) || ((x <= 95 && y <= 28 && 51 <= x) && y <= 7)) || ((y <= 11 && 11 <= x) && x <= 11)) || ((y <= 41 && 51 <= x) && x <= 61)) || ((35 <= x && y <= 35) && x <= 35)) || ((51 <= x && x <= 71) && y <= 31)) || ((34 <= x && y <= 34) && x <= 51)) || ((y <= 40 && x <= 62) && 51 <= x)) || ((y <= 17 && 17 <= x) && x <= 51)) || (((y <= 28 && 51 <= x) && x <= 79) && y <= 23)) || ((y <= 41 && 41 <= x) && x <= 41)) || (((y <= 28 && 51 <= x) && x <= 94) && y <= 8)) || ((x <= 50 && y <= 14) && 14 <= x)) || ((x <= 70 && 51 <= x) && y <= 32)) || ((x <= 22 && y <= 22) && 22 <= x)) || ((y <= 13 && 13 <= x) && x <= 51)) || ((x <= 56 && 51 <= x) && y <= 46)) || ((y <= 33 && 51 <= x) && x <= 69)) || ((y <= 19 && x <= 19) && 19 <= x)) || ((y <= 36 && 51 <= x) && x <= 66)) || ((45 <= x && y <= 45) && x <= 45)) || ((x <= 27 && y <= 27) && 27 <= x)) || ((x <= 51 && y <= 3) && 3 <= x)) || ((y <= 23 && x <= 51) && 23 <= x)) || ((y <= 4 && y <= 28 && 51 <= x) && x <= 98)) || ((y <= 24 && x <= 51) && 24 <= x)) || (((y <= 28 && 51 <= x) && x <= 87) && y <= 15)) || ((y <= 10 && x <= 50) && 10 <= x)) || ((31 <= x && x <= 31) && y <= 31)) || ((y <= 11 && y <= 28 && 51 <= x) && x <= 91)) || ((y <= 50 && 51 <= x) && x <= 52)) || ((15 <= x && y <= 15) && x <= 15)) || (((y <= 28 && 51 <= x) && y <= 5) && x <= 97)) || ((y <= 42 && 51 <= x) && x <= 60)) || ((16 <= x && y <= 16) && x <= 51)) || ((y <= 7 && x <= 7) && 7 <= x)) || ((x <= 78 && y <= 28 && 51 <= x) && y <= 24)) || ((y <= 50 && 50 <= x) && x <= 50)) || ((12 <= x && x <= 51) && y <= 12)) || ((y <= 13 && y <= 28 && 51 <= x) && x <= 89)) || ((30 <= x && x <= 30) && y <= 30)) || (((y <= 28 && 51 <= x) && y <= 16) && x <= 86)) || ((y <= 21 && 21 <= x) && x <= 21)) || ((8 <= x && x <= 8) && y <= 8)) || ((x <= 51 && 51 <= x) && y <= 51)) || ((x <= 53 && 51 <= x) && y <= 49)) || ((51 <= x && x <= 72) && y <= 30)) || ((25 <= x && y <= 25) && x <= 25)) || ((48 <= x && x <= 48) && y <= 48)) || ((y <= 40 && x <= 51) && 40 <= x)) || ((x <= 58 && 51 <= x) && y <= 44)) || ((37 <= x && x <= 50) && y <= 37)) || ((y <= 29 && x <= 73) && 51 <= x)) || ((46 <= x && x <= 51) && y <= 46)) || ((y <= 4 && 4 <= x) && x <= 4)) || ((5 <= x && y <= 5) && x <= 5)) || (((y <= 28 && 51 <= x) && x <= 102) && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. SAFE Result, 64.9s OverallTime, 98 OverallIterations, 132 TraceHistogramMax, 17.7s AutomataDifference, 0.0s DeadEndRemovalTime, 1.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 2428 SDtfs, 15784 SDslu, 19119 SDs, 0 SdLazy, 27994 SolverSat, 3230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23612 GetRequests, 20525 SyntacticMatches, 0 SemanticMatches, 3087 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20928 ImplicationChecksByTransitivity, 32.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6236occurred in iteration=76, 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: 2.7s AutomataMinimizationTime, 98 MinimizatonAttempts, 110858 StatesRemovedByMinimization, 81 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 109 NumberOfFragments, 1164 HoareAnnotationTreeSize, 5 FomulaSimplifications, 6457 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8928 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.8s SatisfiabilityAnalysisTime, 34.2s InterpolantComputationTime, 41486 NumberOfCodeBlocks, 41024 NumberOfCodeBlocksAsserted, 1446 NumberOfCheckSat, 41295 ConstructedInterpolants, 0 QuantifiedInterpolants, 32546281 SizeOfPredicates, 31 NumberOfNonLiveVariables, 34125 ConjunctsInSsa, 2756 ConjunctsInUnsatCore, 191 InterpolantComputations, 6 PerfectInterpolantSequences, 376831/908515 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...